/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-sre-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:56:43,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:56:43,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:56:43,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:56:43,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:56:43,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:56:43,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:56:43,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:56:43,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:56:43,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:56:43,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:56:43,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:56:43,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:56:43,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:56:43,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:56:43,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:56:43,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:56:43,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:56:43,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:56:43,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:56:43,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:56:43,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:56:43,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:56:43,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:56:43,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 20:56:43,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 20:56:43,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 20:56:43,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 20:56:43,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 20:56:43,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 20:56:43,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:56:43,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:56:43,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:56:43,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:56:43,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:56:43,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:56:43,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:56:43,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:56:43,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:56:43,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:56:43,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:56:43,650 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 20:56:43,674 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:56:43,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:56:43,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:56:43,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:56:43,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:56:43,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:56:43,675 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:56:43,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:56:43,676 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:56:43,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:56:43,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:56:43,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:56:43,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:56:43,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:56:43,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:56:43,677 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:56:43,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:56:43,677 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:56:43,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:56:43,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:56:43,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:56:43,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:56:43,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:56:43,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:56:43,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:56:43,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:56:43,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:56:43,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:56:43,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:56:43,679 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:56:43,679 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:56:43,679 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:56:43,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:56:43,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:56:43,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:56:43,849 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:56:43,851 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:56:43,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c [2022-09-20 20:56:43,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4f8a491/59f1ac4cea444f2eb72ec218c96ed0d7/FLAG97e3fd5d7 [2022-09-20 20:56:44,234 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:56:44,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c [2022-09-20 20:56:44,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4f8a491/59f1ac4cea444f2eb72ec218c96ed0d7/FLAG97e3fd5d7 [2022-09-20 20:56:44,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4f8a491/59f1ac4cea444f2eb72ec218c96ed0d7 [2022-09-20 20:56:44,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:56:44,256 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:56:44,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:56:44,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:56:44,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:56:44,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:56:44" (1/1) ... [2022-09-20 20:56:44,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@352d161f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44, skipping insertion in model container [2022-09-20 20:56:44,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:56:44" (1/1) ... [2022-09-20 20:56:44,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:56:44,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:56:44,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c[2133,2146] [2022-09-20 20:56:44,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:56:44,419 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:56:44,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c[2133,2146] [2022-09-20 20:56:44,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:56:44,440 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:56:44,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44 WrapperNode [2022-09-20 20:56:44,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:56:44,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:56:44,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:56:44,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:56:44,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44" (1/1) ... [2022-09-20 20:56:44,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44" (1/1) ... [2022-09-20 20:56:44,468 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-09-20 20:56:44,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:56:44,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:56:44,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:56:44,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:56:44,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44" (1/1) ... [2022-09-20 20:56:44,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44" (1/1) ... [2022-09-20 20:56:44,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44" (1/1) ... [2022-09-20 20:56:44,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44" (1/1) ... [2022-09-20 20:56:44,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44" (1/1) ... [2022-09-20 20:56:44,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44" (1/1) ... [2022-09-20 20:56:44,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44" (1/1) ... [2022-09-20 20:56:44,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:56:44,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:56:44,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:56:44,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:56:44,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44" (1/1) ... [2022-09-20 20:56:44,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:56:44,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:56:44,529 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 20:56:44,536 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 20:56:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:56:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 20:56:44,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 20:56:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 20:56:44,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 20:56:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:56:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:56:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:56:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:56:44,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:56:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:56:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:56:44,560 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 20:56:44,643 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:56:44,644 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:56:44,848 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:56:44,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:56:44,867 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 20:56:44,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:56:44 BoogieIcfgContainer [2022-09-20 20:56:44,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:56:44,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:56:44,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:56:44,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:56:44,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:56:44" (1/3) ... [2022-09-20 20:56:44,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401a91c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:56:44, skipping insertion in model container [2022-09-20 20:56:44,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:56:44" (2/3) ... [2022-09-20 20:56:44,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401a91c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:56:44, skipping insertion in model container [2022-09-20 20:56:44,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:56:44" (3/3) ... [2022-09-20 20:56:44,875 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2022-09-20 20:56:44,886 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:56:44,886 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 20:56:44,886 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:56:44,949 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 20:56:44,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 220 flow [2022-09-20 20:56:45,027 INFO L130 PetriNetUnfolder]: 7/100 cut-off events. [2022-09-20 20:56:45,027 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 20:56:45,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 7/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-09-20 20:56:45,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 220 flow [2022-09-20 20:56:45,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 194 flow [2022-09-20 20:56:45,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:56:45,046 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;@c247e10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:56:45,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 20:56:45,068 INFO L130 PetriNetUnfolder]: 7/90 cut-off events. [2022-09-20 20:56:45,069 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 20:56:45,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:45,069 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] [2022-09-20 20:56:45,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:45,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:45,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1122200234, now seen corresponding path program 1 times [2022-09-20 20:56:45,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:45,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161258193] [2022-09-20 20:56:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:45,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:45,405 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 20:56:45,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:45,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161258193] [2022-09-20 20:56:45,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161258193] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:45,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:45,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:56:45,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405517855] [2022-09-20 20:56:45,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:45,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:56:45,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:45,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:56:45,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:56:45,443 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2022-09-20 20:56:45,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 194 flow. Second operand has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:45,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:45,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2022-09-20 20:56:45,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:45,733 INFO L130 PetriNetUnfolder]: 55/297 cut-off events. [2022-09-20 20:56:45,734 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-09-20 20:56:45,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 297 events. 55/297 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1135 event pairs, 11 based on Foata normal form. 9/289 useless extension candidates. Maximal degree in co-relation 265. Up to 44 conditions per place. [2022-09-20 20:56:45,736 INFO L137 encePairwiseOnDemand]: 86/102 looper letters, 52 selfloop transitions, 10 changer transitions 34/155 dead transitions. [2022-09-20 20:56:45,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 155 transitions, 541 flow [2022-09-20 20:56:45,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-20 20:56:45,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-20 20:56:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1141 transitions. [2022-09-20 20:56:45,748 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7457516339869281 [2022-09-20 20:56:45,749 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1141 transitions. [2022-09-20 20:56:45,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1141 transitions. [2022-09-20 20:56:45,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:45,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1141 transitions. [2022-09-20 20:56:45,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.06666666666666) internal successors, (1141), 15 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:45,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:45,762 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:45,763 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 194 flow. Second operand 15 states and 1141 transitions. [2022-09-20 20:56:45,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 155 transitions, 541 flow [2022-09-20 20:56:45,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 515 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:56:45,768 INFO L231 Difference]: Finished difference. Result has 111 places, 93 transitions, 253 flow [2022-09-20 20:56:45,769 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=253, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2022-09-20 20:56:45,771 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2022-09-20 20:56:45,772 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 253 flow [2022-09-20 20:56:45,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:45,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:45,772 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] [2022-09-20 20:56:45,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:56:45,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash -569889743, now seen corresponding path program 1 times [2022-09-20 20:56:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:45,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581348840] [2022-09-20 20:56:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:45,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:45,855 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 20:56:45,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:45,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581348840] [2022-09-20 20:56:45,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581348840] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:45,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:45,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:56:45,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889907972] [2022-09-20 20:56:45,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:45,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:56:45,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:45,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:56:45,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:56:45,858 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-09-20 20:56:45,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:45,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:45,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-09-20 20:56:45,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:45,919 INFO L130 PetriNetUnfolder]: 41/342 cut-off events. [2022-09-20 20:56:45,920 INFO L131 PetriNetUnfolder]: For 104/106 co-relation queries the response was YES. [2022-09-20 20:56:45,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 342 events. 41/342 cut-off events. For 104/106 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1550 event pairs, 19 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 562. Up to 46 conditions per place. [2022-09-20 20:56:45,924 INFO L137 encePairwiseOnDemand]: 98/102 looper letters, 20 selfloop transitions, 2 changer transitions 3/102 dead transitions. [2022-09-20 20:56:45,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 324 flow [2022-09-20 20:56:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:56:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:56:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2022-09-20 20:56:45,932 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8921568627450981 [2022-09-20 20:56:45,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2022-09-20 20:56:45,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2022-09-20 20:56:45,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:45,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2022-09-20 20:56:45,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:45,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:45,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:45,934 INFO L175 Difference]: Start difference. First operand has 111 places, 93 transitions, 253 flow. Second operand 3 states and 273 transitions. [2022-09-20 20:56:45,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 324 flow [2022-09-20 20:56:45,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 313 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-20 20:56:45,940 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 252 flow [2022-09-20 20:56:45,940 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2022-09-20 20:56:45,941 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2022-09-20 20:56:45,941 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 252 flow [2022-09-20 20:56:45,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:45,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:45,941 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] [2022-09-20 20:56:45,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:56:45,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:45,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:45,943 INFO L85 PathProgramCache]: Analyzing trace with hash -468819727, now seen corresponding path program 1 times [2022-09-20 20:56:45,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:45,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762624645] [2022-09-20 20:56:45,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:45,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:46,026 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 20:56:46,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:46,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762624645] [2022-09-20 20:56:46,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762624645] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:46,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:46,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:56:46,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611336273] [2022-09-20 20:56:46,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:46,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:56:46,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:46,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:56:46,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:56:46,031 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-09-20 20:56:46,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:46,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-09-20 20:56:46,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:46,069 INFO L130 PetriNetUnfolder]: 26/184 cut-off events. [2022-09-20 20:56:46,070 INFO L131 PetriNetUnfolder]: For 65/66 co-relation queries the response was YES. [2022-09-20 20:56:46,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 184 events. 26/184 cut-off events. For 65/66 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 538 event pairs, 13 based on Foata normal form. 7/173 useless extension candidates. Maximal degree in co-relation 287. Up to 39 conditions per place. [2022-09-20 20:56:46,071 INFO L137 encePairwiseOnDemand]: 98/102 looper letters, 15 selfloop transitions, 2 changer transitions 9/93 dead transitions. [2022-09-20 20:56:46,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 288 flow [2022-09-20 20:56:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:56:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:56:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2022-09-20 20:56:46,072 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8758169934640523 [2022-09-20 20:56:46,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2022-09-20 20:56:46,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2022-09-20 20:56:46,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:46,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2022-09-20 20:56:46,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,074 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,074 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 252 flow. Second operand 3 states and 268 transitions. [2022-09-20 20:56:46,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 288 flow [2022-09-20 20:56:46,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 93 transitions, 278 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-09-20 20:56:46,079 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 204 flow [2022-09-20 20:56:46,079 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2022-09-20 20:56:46,080 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2022-09-20 20:56:46,080 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 204 flow [2022-09-20 20:56:46,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:46,081 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] [2022-09-20 20:56:46,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:56:46,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:46,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:46,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1194239646, now seen corresponding path program 1 times [2022-09-20 20:56:46,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:46,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567984450] [2022-09-20 20:56:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:46,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:46,275 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 20:56:46,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:46,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567984450] [2022-09-20 20:56:46,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567984450] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:46,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:46,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:46,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538034438] [2022-09-20 20:56:46,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:46,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:46,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:46,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:46,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:46,281 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:46,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 204 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:46,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:46,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:46,599 INFO L130 PetriNetUnfolder]: 96/368 cut-off events. [2022-09-20 20:56:46,599 INFO L131 PetriNetUnfolder]: For 155/157 co-relation queries the response was YES. [2022-09-20 20:56:46,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 368 events. 96/368 cut-off events. For 155/157 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1600 event pairs, 35 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 693. Up to 112 conditions per place. [2022-09-20 20:56:46,601 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 75 selfloop transitions, 5 changer transitions 34/167 dead transitions. [2022-09-20 20:56:46,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 167 transitions, 697 flow [2022-09-20 20:56:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-20 20:56:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-20 20:56:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1627 transitions. [2022-09-20 20:56:46,604 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6646241830065359 [2022-09-20 20:56:46,604 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1627 transitions. [2022-09-20 20:56:46,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1627 transitions. [2022-09-20 20:56:46,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:46,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1627 transitions. [2022-09-20 20:56:46,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.79166666666667) internal successors, (1627), 24 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,610 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,610 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 204 flow. Second operand 24 states and 1627 transitions. [2022-09-20 20:56:46,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 167 transitions, 697 flow [2022-09-20 20:56:46,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 167 transitions, 643 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-09-20 20:56:46,613 INFO L231 Difference]: Finished difference. Result has 132 places, 87 transitions, 283 flow [2022-09-20 20:56:46,613 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=283, PETRI_PLACES=132, PETRI_TRANSITIONS=87} [2022-09-20 20:56:46,614 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 41 predicate places. [2022-09-20 20:56:46,614 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 87 transitions, 283 flow [2022-09-20 20:56:46,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:46,615 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] [2022-09-20 20:56:46,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:56:46,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:46,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:46,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1208604884, now seen corresponding path program 1 times [2022-09-20 20:56:46,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:46,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836484041] [2022-09-20 20:56:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:46,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:46,663 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 20:56:46,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:46,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836484041] [2022-09-20 20:56:46,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836484041] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:46,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:46,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 20:56:46,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012174379] [2022-09-20 20:56:46,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:46,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 20:56:46,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:46,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 20:56:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-20 20:56:46,665 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-09-20 20:56:46,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 87 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:46,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-09-20 20:56:46,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:46,743 INFO L130 PetriNetUnfolder]: 43/324 cut-off events. [2022-09-20 20:56:46,743 INFO L131 PetriNetUnfolder]: For 732/736 co-relation queries the response was YES. [2022-09-20 20:56:46,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 324 events. 43/324 cut-off events. For 732/736 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1434 event pairs, 29 based on Foata normal form. 4/310 useless extension candidates. Maximal degree in co-relation 794. Up to 36 conditions per place. [2022-09-20 20:56:46,746 INFO L137 encePairwiseOnDemand]: 97/102 looper letters, 21 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2022-09-20 20:56:46,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 96 transitions, 359 flow [2022-09-20 20:56:46,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 20:56:46,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 20:56:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2022-09-20 20:56:46,747 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2022-09-20 20:56:46,747 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2022-09-20 20:56:46,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2022-09-20 20:56:46,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:46,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2022-09-20 20:56:46,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,749 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,749 INFO L175 Difference]: Start difference. First operand has 132 places, 87 transitions, 283 flow. Second operand 4 states and 354 transitions. [2022-09-20 20:56:46,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 96 transitions, 359 flow [2022-09-20 20:56:46,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 96 transitions, 336 flow, removed 11 selfloop flow, removed 11 redundant places. [2022-09-20 20:56:46,772 INFO L231 Difference]: Finished difference. Result has 109 places, 89 transitions, 284 flow [2022-09-20 20:56:46,772 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=109, PETRI_TRANSITIONS=89} [2022-09-20 20:56:46,773 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 18 predicate places. [2022-09-20 20:56:46,773 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 89 transitions, 284 flow [2022-09-20 20:56:46,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:46,773 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] [2022-09-20 20:56:46,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:56:46,774 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:46,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:46,774 INFO L85 PathProgramCache]: Analyzing trace with hash 939675466, now seen corresponding path program 1 times [2022-09-20 20:56:46,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:46,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899125069] [2022-09-20 20:56:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:46,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:46,823 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 20:56:46,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:46,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899125069] [2022-09-20 20:56:46,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899125069] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:46,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:46,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 20:56:46,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422092807] [2022-09-20 20:56:46,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:46,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 20:56:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 20:56:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-20 20:56:46,825 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-09-20 20:56:46,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 89 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:46,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-09-20 20:56:46,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:46,870 INFO L130 PetriNetUnfolder]: 42/346 cut-off events. [2022-09-20 20:56:46,870 INFO L131 PetriNetUnfolder]: For 373/385 co-relation queries the response was YES. [2022-09-20 20:56:46,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 346 events. 42/346 cut-off events. For 373/385 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1638 event pairs, 32 based on Foata normal form. 7/337 useless extension candidates. Maximal degree in co-relation 453. Up to 34 conditions per place. [2022-09-20 20:56:46,872 INFO L137 encePairwiseOnDemand]: 94/102 looper letters, 20 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2022-09-20 20:56:46,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 98 transitions, 370 flow [2022-09-20 20:56:46,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 20:56:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 20:56:46,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2022-09-20 20:56:46,873 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2022-09-20 20:56:46,873 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2022-09-20 20:56:46,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2022-09-20 20:56:46,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:46,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2022-09-20 20:56:46,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,875 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,875 INFO L175 Difference]: Start difference. First operand has 109 places, 89 transitions, 284 flow. Second operand 4 states and 354 transitions. [2022-09-20 20:56:46,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 98 transitions, 370 flow [2022-09-20 20:56:46,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 98 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 20:56:46,878 INFO L231 Difference]: Finished difference. Result has 113 places, 91 transitions, 318 flow [2022-09-20 20:56:46,878 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=113, PETRI_TRANSITIONS=91} [2022-09-20 20:56:46,878 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 22 predicate places. [2022-09-20 20:56:46,879 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 91 transitions, 318 flow [2022-09-20 20:56:46,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:46,879 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] [2022-09-20 20:56:46,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:56:46,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash 994240294, now seen corresponding path program 2 times [2022-09-20 20:56:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:46,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132757623] [2022-09-20 20:56:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:46,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:46,927 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 20:56:46,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:46,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132757623] [2022-09-20 20:56:46,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132757623] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:46,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:46,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:56:46,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835730577] [2022-09-20 20:56:46,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:46,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:56:46,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:46,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:56:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:56:46,930 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-09-20 20:56:46,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 91 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:46,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-09-20 20:56:46,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:46,989 INFO L130 PetriNetUnfolder]: 38/296 cut-off events. [2022-09-20 20:56:46,989 INFO L131 PetriNetUnfolder]: For 403/407 co-relation queries the response was YES. [2022-09-20 20:56:46,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 296 events. 38/296 cut-off events. For 403/407 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1237 event pairs, 29 based on Foata normal form. 3/290 useless extension candidates. Maximal degree in co-relation 585. Up to 31 conditions per place. [2022-09-20 20:56:46,991 INFO L137 encePairwiseOnDemand]: 95/102 looper letters, 21 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2022-09-20 20:56:46,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 100 transitions, 406 flow [2022-09-20 20:56:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 20:56:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 20:56:46,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 438 transitions. [2022-09-20 20:56:46,993 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-09-20 20:56:46,994 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 438 transitions. [2022-09-20 20:56:46,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 438 transitions. [2022-09-20 20:56:46,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:46,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 438 transitions. [2022-09-20 20:56:46,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:46,996 INFO L175 Difference]: Start difference. First operand has 113 places, 91 transitions, 318 flow. Second operand 5 states and 438 transitions. [2022-09-20 20:56:46,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 100 transitions, 406 flow [2022-09-20 20:56:46,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 100 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:56:46,999 INFO L231 Difference]: Finished difference. Result has 117 places, 93 transitions, 350 flow [2022-09-20 20:56:46,999 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=117, PETRI_TRANSITIONS=93} [2022-09-20 20:56:47,000 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 26 predicate places. [2022-09-20 20:56:47,000 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 93 transitions, 350 flow [2022-09-20 20:56:47,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:47,001 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] [2022-09-20 20:56:47,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:56:47,001 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:47,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:47,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1175916198, now seen corresponding path program 2 times [2022-09-20 20:56:47,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:47,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507963923] [2022-09-20 20:56:47,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:47,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:47,067 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 20:56:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:47,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507963923] [2022-09-20 20:56:47,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507963923] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:47,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:47,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:56:47,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239285331] [2022-09-20 20:56:47,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:47,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:56:47,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:47,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:56:47,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:56:47,070 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-09-20 20:56:47,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 93 transitions, 350 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:47,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-09-20 20:56:47,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:47,119 INFO L130 PetriNetUnfolder]: 26/240 cut-off events. [2022-09-20 20:56:47,119 INFO L131 PetriNetUnfolder]: For 302/304 co-relation queries the response was YES. [2022-09-20 20:56:47,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 240 events. 26/240 cut-off events. For 302/304 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 891 event pairs, 18 based on Foata normal form. 3/234 useless extension candidates. Maximal degree in co-relation 454. Up to 25 conditions per place. [2022-09-20 20:56:47,121 INFO L137 encePairwiseOnDemand]: 97/102 looper letters, 23 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2022-09-20 20:56:47,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 100 transitions, 436 flow [2022-09-20 20:56:47,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 20:56:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 20:56:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2022-09-20 20:56:47,122 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8549019607843137 [2022-09-20 20:56:47,122 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2022-09-20 20:56:47,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2022-09-20 20:56:47,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:47,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2022-09-20 20:56:47,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,124 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,124 INFO L175 Difference]: Start difference. First operand has 117 places, 93 transitions, 350 flow. Second operand 5 states and 436 transitions. [2022-09-20 20:56:47,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 100 transitions, 436 flow [2022-09-20 20:56:47,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 100 transitions, 422 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-09-20 20:56:47,127 INFO L231 Difference]: Finished difference. Result has 121 places, 95 transitions, 372 flow [2022-09-20 20:56:47,127 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=121, PETRI_TRANSITIONS=95} [2022-09-20 20:56:47,127 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 30 predicate places. [2022-09-20 20:56:47,128 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 95 transitions, 372 flow [2022-09-20 20:56:47,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:47,128 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] [2022-09-20 20:56:47,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:56:47,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:47,128 INFO L85 PathProgramCache]: Analyzing trace with hash 36403416, now seen corresponding path program 2 times [2022-09-20 20:56:47,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:47,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606128536] [2022-09-20 20:56:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:47,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:47,233 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 20:56:47,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:47,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606128536] [2022-09-20 20:56:47,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606128536] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:47,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:47,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:47,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822858281] [2022-09-20 20:56:47,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:47,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:47,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:47,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:47,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:47,236 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:47,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 95 transitions, 372 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:47,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:47,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:47,507 INFO L130 PetriNetUnfolder]: 80/374 cut-off events. [2022-09-20 20:56:47,507 INFO L131 PetriNetUnfolder]: For 532/536 co-relation queries the response was YES. [2022-09-20 20:56:47,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 374 events. 80/374 cut-off events. For 532/536 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1721 event pairs, 40 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 1023. Up to 125 conditions per place. [2022-09-20 20:56:47,509 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 70 selfloop transitions, 5 changer transitions 35/171 dead transitions. [2022-09-20 20:56:47,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 171 transitions, 992 flow [2022-09-20 20:56:47,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-20 20:56:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-20 20:56:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1619 transitions. [2022-09-20 20:56:47,512 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6613562091503268 [2022-09-20 20:56:47,512 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1619 transitions. [2022-09-20 20:56:47,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1619 transitions. [2022-09-20 20:56:47,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:47,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1619 transitions. [2022-09-20 20:56:47,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.45833333333333) internal successors, (1619), 24 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,519 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,519 INFO L175 Difference]: Start difference. First operand has 121 places, 95 transitions, 372 flow. Second operand 24 states and 1619 transitions. [2022-09-20 20:56:47,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 171 transitions, 992 flow [2022-09-20 20:56:47,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 171 transitions, 978 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-09-20 20:56:47,537 INFO L231 Difference]: Finished difference. Result has 164 places, 99 transitions, 467 flow [2022-09-20 20:56:47,537 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=467, PETRI_PLACES=164, PETRI_TRANSITIONS=99} [2022-09-20 20:56:47,538 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 73 predicate places. [2022-09-20 20:56:47,538 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 99 transitions, 467 flow [2022-09-20 20:56:47,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:47,539 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] [2022-09-20 20:56:47,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 20:56:47,539 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:47,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:47,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1957435108, now seen corresponding path program 3 times [2022-09-20 20:56:47,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:47,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674930182] [2022-09-20 20:56:47,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:47,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:47,641 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 20:56:47,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:47,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674930182] [2022-09-20 20:56:47,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674930182] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:47,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:47,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:47,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523024573] [2022-09-20 20:56:47,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:47,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:47,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:47,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:47,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:47,645 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:47,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 99 transitions, 467 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:47,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:47,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:47,907 INFO L130 PetriNetUnfolder]: 92/417 cut-off events. [2022-09-20 20:56:47,907 INFO L131 PetriNetUnfolder]: For 2019/2024 co-relation queries the response was YES. [2022-09-20 20:56:47,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 417 events. 92/417 cut-off events. For 2019/2024 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2069 event pairs, 44 based on Foata normal form. 1/412 useless extension candidates. Maximal degree in co-relation 1601. Up to 161 conditions per place. [2022-09-20 20:56:47,911 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 55 selfloop transitions, 12 changer transitions 28/156 dead transitions. [2022-09-20 20:56:47,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 156 transitions, 1205 flow [2022-09-20 20:56:47,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 20:56:47,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 20:56:47,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1478 transitions. [2022-09-20 20:56:47,914 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6586452762923352 [2022-09-20 20:56:47,914 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1478 transitions. [2022-09-20 20:56:47,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1478 transitions. [2022-09-20 20:56:47,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:47,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1478 transitions. [2022-09-20 20:56:47,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.18181818181819) internal successors, (1478), 22 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,923 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,923 INFO L175 Difference]: Start difference. First operand has 164 places, 99 transitions, 467 flow. Second operand 22 states and 1478 transitions. [2022-09-20 20:56:47,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 156 transitions, 1205 flow [2022-09-20 20:56:47,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 156 transitions, 966 flow, removed 118 selfloop flow, removed 12 redundant places. [2022-09-20 20:56:47,934 INFO L231 Difference]: Finished difference. Result has 170 places, 109 transitions, 556 flow [2022-09-20 20:56:47,935 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=556, PETRI_PLACES=170, PETRI_TRANSITIONS=109} [2022-09-20 20:56:47,936 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2022-09-20 20:56:47,936 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 109 transitions, 556 flow [2022-09-20 20:56:47,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:47,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:47,937 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] [2022-09-20 20:56:47,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 20:56:47,937 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:47,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1949887706, now seen corresponding path program 4 times [2022-09-20 20:56:47,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:47,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539255011] [2022-09-20 20:56:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:47,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:48,024 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 20:56:48,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:48,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539255011] [2022-09-20 20:56:48,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539255011] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:48,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:48,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:48,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813140613] [2022-09-20 20:56:48,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:48,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:48,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:48,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:48,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:48,026 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:48,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 109 transitions, 556 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:48,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:48,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:48,288 INFO L130 PetriNetUnfolder]: 108/470 cut-off events. [2022-09-20 20:56:48,288 INFO L131 PetriNetUnfolder]: For 2060/2067 co-relation queries the response was YES. [2022-09-20 20:56:48,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 470 events. 108/470 cut-off events. For 2060/2067 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2462 event pairs, 54 based on Foata normal form. 2/464 useless extension candidates. Maximal degree in co-relation 1808. Up to 175 conditions per place. [2022-09-20 20:56:48,292 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 58 selfloop transitions, 17 changer transitions 28/164 dead transitions. [2022-09-20 20:56:48,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 164 transitions, 1307 flow [2022-09-20 20:56:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:56:48,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:56:48,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1417 transitions. [2022-09-20 20:56:48,294 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.661531279178338 [2022-09-20 20:56:48,295 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1417 transitions. [2022-09-20 20:56:48,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1417 transitions. [2022-09-20 20:56:48,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:48,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1417 transitions. [2022-09-20 20:56:48,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.47619047619048) internal successors, (1417), 21 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,304 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,304 INFO L175 Difference]: Start difference. First operand has 170 places, 109 transitions, 556 flow. Second operand 21 states and 1417 transitions. [2022-09-20 20:56:48,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 164 transitions, 1307 flow [2022-09-20 20:56:48,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 164 transitions, 1161 flow, removed 73 selfloop flow, removed 15 redundant places. [2022-09-20 20:56:48,313 INFO L231 Difference]: Finished difference. Result has 178 places, 119 transitions, 722 flow [2022-09-20 20:56:48,313 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=722, PETRI_PLACES=178, PETRI_TRANSITIONS=119} [2022-09-20 20:56:48,313 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 87 predicate places. [2022-09-20 20:56:48,314 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 119 transitions, 722 flow [2022-09-20 20:56:48,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:48,314 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] [2022-09-20 20:56:48,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 20:56:48,314 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:48,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:48,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1961412494, now seen corresponding path program 5 times [2022-09-20 20:56:48,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:48,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521367503] [2022-09-20 20:56:48,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:48,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:48,436 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 20:56:48,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:48,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521367503] [2022-09-20 20:56:48,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521367503] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:48,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:48,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:48,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990266500] [2022-09-20 20:56:48,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:48,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:48,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:48,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:48,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:48,439 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:48,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 119 transitions, 722 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:48,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:48,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:48,693 INFO L130 PetriNetUnfolder]: 104/480 cut-off events. [2022-09-20 20:56:48,694 INFO L131 PetriNetUnfolder]: For 2532/2548 co-relation queries the response was YES. [2022-09-20 20:56:48,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2047 conditions, 480 events. 104/480 cut-off events. For 2532/2548 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2549 event pairs, 59 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 1943. Up to 163 conditions per place. [2022-09-20 20:56:48,698 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 57 selfloop transitions, 23 changer transitions 28/169 dead transitions. [2022-09-20 20:56:48,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 169 transitions, 1535 flow [2022-09-20 20:56:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:56:48,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:56:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1351 transitions. [2022-09-20 20:56:48,700 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6622549019607843 [2022-09-20 20:56:48,700 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1351 transitions. [2022-09-20 20:56:48,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1351 transitions. [2022-09-20 20:56:48,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:48,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1351 transitions. [2022-09-20 20:56:48,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.55) internal successors, (1351), 20 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,705 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,705 INFO L175 Difference]: Start difference. First operand has 178 places, 119 transitions, 722 flow. Second operand 20 states and 1351 transitions. [2022-09-20 20:56:48,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 169 transitions, 1535 flow [2022-09-20 20:56:48,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 169 transitions, 1383 flow, removed 71 selfloop flow, removed 11 redundant places. [2022-09-20 20:56:48,715 INFO L231 Difference]: Finished difference. Result has 190 places, 127 transitions, 896 flow [2022-09-20 20:56:48,716 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=896, PETRI_PLACES=190, PETRI_TRANSITIONS=127} [2022-09-20 20:56:48,716 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 99 predicate places. [2022-09-20 20:56:48,716 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 127 transitions, 896 flow [2022-09-20 20:56:48,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:48,717 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] [2022-09-20 20:56:48,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 20:56:48,717 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:48,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:48,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1187457154, now seen corresponding path program 6 times [2022-09-20 20:56:48,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:48,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080629402] [2022-09-20 20:56:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:48,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:48,794 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 20:56:48,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:48,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080629402] [2022-09-20 20:56:48,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080629402] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:48,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:48,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:48,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430877288] [2022-09-20 20:56:48,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:48,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:48,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:48,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:48,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:48,796 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:48,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 127 transitions, 896 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:48,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:48,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:48,964 INFO L130 PetriNetUnfolder]: 97/458 cut-off events. [2022-09-20 20:56:48,964 INFO L131 PetriNetUnfolder]: For 2992/3014 co-relation queries the response was YES. [2022-09-20 20:56:48,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 458 events. 97/458 cut-off events. For 2992/3014 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2447 event pairs, 47 based on Foata normal form. 6/455 useless extension candidates. Maximal degree in co-relation 1987. Up to 185 conditions per place. [2022-09-20 20:56:48,968 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 58 selfloop transitions, 21 changer transitions 22/162 dead transitions. [2022-09-20 20:56:48,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 162 transitions, 1561 flow [2022-09-20 20:56:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 20:56:48,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 20:56:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1084 transitions. [2022-09-20 20:56:48,972 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6642156862745098 [2022-09-20 20:56:48,972 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1084 transitions. [2022-09-20 20:56:48,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1084 transitions. [2022-09-20 20:56:48,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:48,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1084 transitions. [2022-09-20 20:56:48,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.75) internal successors, (1084), 16 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,976 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,976 INFO L175 Difference]: Start difference. First operand has 190 places, 127 transitions, 896 flow. Second operand 16 states and 1084 transitions. [2022-09-20 20:56:48,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 162 transitions, 1561 flow [2022-09-20 20:56:48,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 162 transitions, 1412 flow, removed 64 selfloop flow, removed 10 redundant places. [2022-09-20 20:56:48,988 INFO L231 Difference]: Finished difference. Result has 192 places, 132 transitions, 964 flow [2022-09-20 20:56:48,988 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=964, PETRI_PLACES=192, PETRI_TRANSITIONS=132} [2022-09-20 20:56:48,989 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 101 predicate places. [2022-09-20 20:56:48,989 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 132 transitions, 964 flow [2022-09-20 20:56:48,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:48,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:48,990 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] [2022-09-20 20:56:48,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-20 20:56:48,990 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:48,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:48,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2127635054, now seen corresponding path program 7 times [2022-09-20 20:56:48,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:48,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587837398] [2022-09-20 20:56:48,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:48,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:49,081 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 20:56:49,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:49,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587837398] [2022-09-20 20:56:49,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587837398] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:49,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:49,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:49,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92479562] [2022-09-20 20:56:49,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:49,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:49,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:49,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:49,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:49,082 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:49,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 132 transitions, 964 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:49,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:49,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:49,320 INFO L130 PetriNetUnfolder]: 96/455 cut-off events. [2022-09-20 20:56:49,320 INFO L131 PetriNetUnfolder]: For 2739/2764 co-relation queries the response was YES. [2022-09-20 20:56:49,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 455 events. 96/455 cut-off events. For 2739/2764 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2415 event pairs, 49 based on Foata normal form. 4/450 useless extension candidates. Maximal degree in co-relation 1945. Up to 184 conditions per place. [2022-09-20 20:56:49,324 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 65 selfloop transitions, 24 changer transitions 30/180 dead transitions. [2022-09-20 20:56:49,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 180 transitions, 1848 flow [2022-09-20 20:56:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:56:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:56:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1347 transitions. [2022-09-20 20:56:49,326 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6602941176470588 [2022-09-20 20:56:49,326 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1347 transitions. [2022-09-20 20:56:49,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1347 transitions. [2022-09-20 20:56:49,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:49,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1347 transitions. [2022-09-20 20:56:49,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.35) internal successors, (1347), 20 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,330 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,330 INFO L175 Difference]: Start difference. First operand has 192 places, 132 transitions, 964 flow. Second operand 20 states and 1347 transitions. [2022-09-20 20:56:49,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 180 transitions, 1848 flow [2022-09-20 20:56:49,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 180 transitions, 1674 flow, removed 45 selfloop flow, removed 12 redundant places. [2022-09-20 20:56:49,342 INFO L231 Difference]: Finished difference. Result has 207 places, 139 transitions, 1071 flow [2022-09-20 20:56:49,342 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1071, PETRI_PLACES=207, PETRI_TRANSITIONS=139} [2022-09-20 20:56:49,343 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 116 predicate places. [2022-09-20 20:56:49,343 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 139 transitions, 1071 flow [2022-09-20 20:56:49,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:49,343 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] [2022-09-20 20:56:49,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-20 20:56:49,344 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:49,344 INFO L85 PathProgramCache]: Analyzing trace with hash -754730848, now seen corresponding path program 8 times [2022-09-20 20:56:49,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:49,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557018189] [2022-09-20 20:56:49,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:49,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:49,418 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 20:56:49,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:49,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557018189] [2022-09-20 20:56:49,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557018189] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:49,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:49,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:49,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270605803] [2022-09-20 20:56:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:49,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:49,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:49,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:49,420 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:49,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 139 transitions, 1071 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:49,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:49,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:49,624 INFO L130 PetriNetUnfolder]: 85/425 cut-off events. [2022-09-20 20:56:49,625 INFO L131 PetriNetUnfolder]: For 2716/2732 co-relation queries the response was YES. [2022-09-20 20:56:49,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1928 conditions, 425 events. 85/425 cut-off events. For 2716/2732 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2190 event pairs, 44 based on Foata normal form. 4/422 useless extension candidates. Maximal degree in co-relation 1811. Up to 170 conditions per place. [2022-09-20 20:56:49,629 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 59 selfloop transitions, 14 changer transitions 31/165 dead transitions. [2022-09-20 20:56:49,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 165 transitions, 1596 flow [2022-09-20 20:56:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:56:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:56:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1209 transitions. [2022-09-20 20:56:49,630 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6584967320261438 [2022-09-20 20:56:49,630 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1209 transitions. [2022-09-20 20:56:49,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1209 transitions. [2022-09-20 20:56:49,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:49,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1209 transitions. [2022-09-20 20:56:49,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.16666666666667) internal successors, (1209), 18 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,634 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,634 INFO L175 Difference]: Start difference. First operand has 207 places, 139 transitions, 1071 flow. Second operand 18 states and 1209 transitions. [2022-09-20 20:56:49,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 165 transitions, 1596 flow [2022-09-20 20:56:49,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 165 transitions, 1466 flow, removed 49 selfloop flow, removed 13 redundant places. [2022-09-20 20:56:49,647 INFO L231 Difference]: Finished difference. Result has 206 places, 124 transitions, 836 flow [2022-09-20 20:56:49,647 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=836, PETRI_PLACES=206, PETRI_TRANSITIONS=124} [2022-09-20 20:56:49,647 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 115 predicate places. [2022-09-20 20:56:49,647 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 124 transitions, 836 flow [2022-09-20 20:56:49,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:49,648 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] [2022-09-20 20:56:49,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-20 20:56:49,648 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:49,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:49,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1891682816, now seen corresponding path program 9 times [2022-09-20 20:56:49,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:49,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121176586] [2022-09-20 20:56:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:49,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:49,747 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 20:56:49,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:49,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121176586] [2022-09-20 20:56:49,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121176586] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:49,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:49,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:49,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553908009] [2022-09-20 20:56:49,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:49,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:49,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:49,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:49,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:49,751 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:49,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 124 transitions, 836 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:49,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:49,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:49,955 INFO L130 PetriNetUnfolder]: 87/420 cut-off events. [2022-09-20 20:56:49,956 INFO L131 PetriNetUnfolder]: For 2348/2365 co-relation queries the response was YES. [2022-09-20 20:56:49,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 420 events. 87/420 cut-off events. For 2348/2365 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2128 event pairs, 48 based on Foata normal form. 3/415 useless extension candidates. Maximal degree in co-relation 1829. Up to 170 conditions per place. [2022-09-20 20:56:49,960 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 56 selfloop transitions, 22 changer transitions 21/160 dead transitions. [2022-09-20 20:56:49,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 160 transitions, 1516 flow [2022-09-20 20:56:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:56:49,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:56:49,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1215 transitions. [2022-09-20 20:56:49,961 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2022-09-20 20:56:49,962 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1215 transitions. [2022-09-20 20:56:49,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1215 transitions. [2022-09-20 20:56:49,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:49,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1215 transitions. [2022-09-20 20:56:49,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.5) internal successors, (1215), 18 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,966 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,966 INFO L175 Difference]: Start difference. First operand has 206 places, 124 transitions, 836 flow. Second operand 18 states and 1215 transitions. [2022-09-20 20:56:49,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 160 transitions, 1516 flow [2022-09-20 20:56:49,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 160 transitions, 1361 flow, removed 31 selfloop flow, removed 17 redundant places. [2022-09-20 20:56:49,977 INFO L231 Difference]: Finished difference. Result has 192 places, 133 transitions, 966 flow [2022-09-20 20:56:49,978 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=966, PETRI_PLACES=192, PETRI_TRANSITIONS=133} [2022-09-20 20:56:49,978 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 101 predicate places. [2022-09-20 20:56:49,979 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 133 transitions, 966 flow [2022-09-20 20:56:49,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:49,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:49,980 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] [2022-09-20 20:56:49,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-20 20:56:49,980 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:49,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:49,980 INFO L85 PathProgramCache]: Analyzing trace with hash 675019408, now seen corresponding path program 10 times [2022-09-20 20:56:49,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:49,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754708487] [2022-09-20 20:56:49,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:49,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:50,056 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 20:56:50,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:50,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754708487] [2022-09-20 20:56:50,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754708487] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:50,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:50,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:50,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947302248] [2022-09-20 20:56:50,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:50,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:50,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:50,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:50,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:50,058 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:50,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 133 transitions, 966 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:50,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:50,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:50,278 INFO L130 PetriNetUnfolder]: 84/414 cut-off events. [2022-09-20 20:56:50,278 INFO L131 PetriNetUnfolder]: For 1890/1906 co-relation queries the response was YES. [2022-09-20 20:56:50,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1797 conditions, 414 events. 84/414 cut-off events. For 1890/1906 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2073 event pairs, 47 based on Foata normal form. 3/409 useless extension candidates. Maximal degree in co-relation 1737. Up to 170 conditions per place. [2022-09-20 20:56:50,282 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 57 selfloop transitions, 24 changer transitions 22/164 dead transitions. [2022-09-20 20:56:50,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 164 transitions, 1567 flow [2022-09-20 20:56:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 20:56:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 20:56:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1151 transitions. [2022-09-20 20:56:50,286 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6637831603229527 [2022-09-20 20:56:50,286 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1151 transitions. [2022-09-20 20:56:50,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1151 transitions. [2022-09-20 20:56:50,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:50,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1151 transitions. [2022-09-20 20:56:50,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.70588235294117) internal successors, (1151), 17 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,290 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,290 INFO L175 Difference]: Start difference. First operand has 192 places, 133 transitions, 966 flow. Second operand 17 states and 1151 transitions. [2022-09-20 20:56:50,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 164 transitions, 1567 flow [2022-09-20 20:56:50,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 164 transitions, 1496 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-09-20 20:56:50,301 INFO L231 Difference]: Finished difference. Result has 204 places, 137 transitions, 1070 flow [2022-09-20 20:56:50,301 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1070, PETRI_PLACES=204, PETRI_TRANSITIONS=137} [2022-09-20 20:56:50,301 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 113 predicate places. [2022-09-20 20:56:50,301 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 137 transitions, 1070 flow [2022-09-20 20:56:50,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:50,302 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] [2022-09-20 20:56:50,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-20 20:56:50,302 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:50,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:50,302 INFO L85 PathProgramCache]: Analyzing trace with hash -402300568, now seen corresponding path program 11 times [2022-09-20 20:56:50,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:50,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177490260] [2022-09-20 20:56:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:50,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:50,382 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 20:56:50,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:50,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177490260] [2022-09-20 20:56:50,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177490260] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:50,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:50,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:50,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343411585] [2022-09-20 20:56:50,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:50,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:50,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:50,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:50,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:50,384 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:50,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 137 transitions, 1070 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:50,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:50,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:50,570 INFO L130 PetriNetUnfolder]: 81/418 cut-off events. [2022-09-20 20:56:50,570 INFO L131 PetriNetUnfolder]: For 1910/1918 co-relation queries the response was YES. [2022-09-20 20:56:50,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 418 events. 81/418 cut-off events. For 1910/1918 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2122 event pairs, 49 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 1722. Up to 170 conditions per place. [2022-09-20 20:56:50,574 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 57 selfloop transitions, 14 changer transitions 30/162 dead transitions. [2022-09-20 20:56:50,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 162 transitions, 1550 flow [2022-09-20 20:56:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 20:56:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 20:56:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1150 transitions. [2022-09-20 20:56:50,578 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6632064590542099 [2022-09-20 20:56:50,579 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1150 transitions. [2022-09-20 20:56:50,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1150 transitions. [2022-09-20 20:56:50,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:50,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1150 transitions. [2022-09-20 20:56:50,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.6470588235294) internal successors, (1150), 17 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,585 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,585 INFO L175 Difference]: Start difference. First operand has 204 places, 137 transitions, 1070 flow. Second operand 17 states and 1150 transitions. [2022-09-20 20:56:50,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 162 transitions, 1550 flow [2022-09-20 20:56:50,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 162 transitions, 1457 flow, removed 25 selfloop flow, removed 8 redundant places. [2022-09-20 20:56:50,597 INFO L231 Difference]: Finished difference. Result has 211 places, 128 transitions, 899 flow [2022-09-20 20:56:50,597 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=899, PETRI_PLACES=211, PETRI_TRANSITIONS=128} [2022-09-20 20:56:50,597 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 120 predicate places. [2022-09-20 20:56:50,597 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 128 transitions, 899 flow [2022-09-20 20:56:50,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:50,598 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] [2022-09-20 20:56:50,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-20 20:56:50,598 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:50,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:50,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1117603654, now seen corresponding path program 12 times [2022-09-20 20:56:50,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:50,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831832597] [2022-09-20 20:56:50,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:50,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:50,682 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 20:56:50,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:50,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831832597] [2022-09-20 20:56:50,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831832597] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:50,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:50,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:50,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031528163] [2022-09-20 20:56:50,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:50,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:50,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:50,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:50,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:50,684 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:50,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 128 transitions, 899 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:50,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:50,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:50,916 INFO L130 PetriNetUnfolder]: 71/371 cut-off events. [2022-09-20 20:56:50,916 INFO L131 PetriNetUnfolder]: For 1683/1699 co-relation queries the response was YES. [2022-09-20 20:56:50,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 371 events. 71/371 cut-off events. For 1683/1699 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1729 event pairs, 44 based on Foata normal form. 3/367 useless extension candidates. Maximal degree in co-relation 1462. Up to 157 conditions per place. [2022-09-20 20:56:50,920 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 3 changer transitions 33/144 dead transitions. [2022-09-20 20:56:50,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 144 transitions, 1213 flow [2022-09-20 20:56:50,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:56:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:56:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1205 transitions. [2022-09-20 20:56:50,924 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.656318082788671 [2022-09-20 20:56:50,924 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1205 transitions. [2022-09-20 20:56:50,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1205 transitions. [2022-09-20 20:56:50,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:50,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1205 transitions. [2022-09-20 20:56:50,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.94444444444444) internal successors, (1205), 18 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,929 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,929 INFO L175 Difference]: Start difference. First operand has 211 places, 128 transitions, 899 flow. Second operand 18 states and 1205 transitions. [2022-09-20 20:56:50,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 144 transitions, 1213 flow [2022-09-20 20:56:50,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 144 transitions, 1095 flow, removed 25 selfloop flow, removed 22 redundant places. [2022-09-20 20:56:50,938 INFO L231 Difference]: Finished difference. Result has 195 places, 108 transitions, 568 flow [2022-09-20 20:56:50,939 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=568, PETRI_PLACES=195, PETRI_TRANSITIONS=108} [2022-09-20 20:56:50,939 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 104 predicate places. [2022-09-20 20:56:50,939 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 108 transitions, 568 flow [2022-09-20 20:56:50,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:50,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:50,939 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] [2022-09-20 20:56:50,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-20 20:56:50,940 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:50,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1390016806, now seen corresponding path program 13 times [2022-09-20 20:56:50,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:50,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861540222] [2022-09-20 20:56:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:50,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:51,038 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 20:56:51,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:51,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861540222] [2022-09-20 20:56:51,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861540222] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:51,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:51,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:51,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434057484] [2022-09-20 20:56:51,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:51,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:51,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:51,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:51,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:51,040 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:51,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 108 transitions, 568 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:51,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:51,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:51,308 INFO L130 PetriNetUnfolder]: 76/388 cut-off events. [2022-09-20 20:56:51,308 INFO L131 PetriNetUnfolder]: For 1558/1562 co-relation queries the response was YES. [2022-09-20 20:56:51,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 388 events. 76/388 cut-off events. For 1558/1562 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1833 event pairs, 40 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1470. Up to 137 conditions per place. [2022-09-20 20:56:51,312 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 53 selfloop transitions, 19 changer transitions 28/161 dead transitions. [2022-09-20 20:56:51,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 161 transitions, 1359 flow [2022-09-20 20:56:51,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 20:56:51,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 20:56:51,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1475 transitions. [2022-09-20 20:56:51,313 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6573083778966132 [2022-09-20 20:56:51,313 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1475 transitions. [2022-09-20 20:56:51,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1475 transitions. [2022-09-20 20:56:51,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:51,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1475 transitions. [2022-09-20 20:56:51,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.04545454545455) internal successors, (1475), 22 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,317 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,318 INFO L175 Difference]: Start difference. First operand has 195 places, 108 transitions, 568 flow. Second operand 22 states and 1475 transitions. [2022-09-20 20:56:51,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 161 transitions, 1359 flow [2022-09-20 20:56:51,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 161 transitions, 1160 flow, removed 41 selfloop flow, removed 23 redundant places. [2022-09-20 20:56:51,324 INFO L231 Difference]: Finished difference. Result has 179 places, 119 transitions, 682 flow [2022-09-20 20:56:51,324 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=682, PETRI_PLACES=179, PETRI_TRANSITIONS=119} [2022-09-20 20:56:51,325 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-09-20 20:56:51,325 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 119 transitions, 682 flow [2022-09-20 20:56:51,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:51,325 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] [2022-09-20 20:56:51,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-20 20:56:51,325 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:51,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:51,326 INFO L85 PathProgramCache]: Analyzing trace with hash -807313904, now seen corresponding path program 14 times [2022-09-20 20:56:51,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:51,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402273088] [2022-09-20 20:56:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:51,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:51,401 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 20:56:51,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:51,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402273088] [2022-09-20 20:56:51,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402273088] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:51,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:51,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:51,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59759078] [2022-09-20 20:56:51,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:51,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:51,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:51,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:51,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:51,403 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:51,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 119 transitions, 682 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:51,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:51,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:51,651 INFO L130 PetriNetUnfolder]: 73/372 cut-off events. [2022-09-20 20:56:51,651 INFO L131 PetriNetUnfolder]: For 1280/1284 co-relation queries the response was YES. [2022-09-20 20:56:51,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 372 events. 73/372 cut-off events. For 1280/1284 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1727 event pairs, 41 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 1428. Up to 135 conditions per place. [2022-09-20 20:56:51,654 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 21 changer transitions 28/159 dead transitions. [2022-09-20 20:56:51,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 159 transitions, 1345 flow [2022-09-20 20:56:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:56:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:56:51,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1409 transitions. [2022-09-20 20:56:51,656 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.657796451914099 [2022-09-20 20:56:51,656 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1409 transitions. [2022-09-20 20:56:51,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1409 transitions. [2022-09-20 20:56:51,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:51,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1409 transitions. [2022-09-20 20:56:51,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.0952380952381) internal successors, (1409), 21 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,668 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,669 INFO L175 Difference]: Start difference. First operand has 179 places, 119 transitions, 682 flow. Second operand 21 states and 1409 transitions. [2022-09-20 20:56:51,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 159 transitions, 1345 flow [2022-09-20 20:56:51,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 159 transitions, 1253 flow, removed 40 selfloop flow, removed 11 redundant places. [2022-09-20 20:56:51,675 INFO L231 Difference]: Finished difference. Result has 188 places, 121 transitions, 777 flow [2022-09-20 20:56:51,676 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=777, PETRI_PLACES=188, PETRI_TRANSITIONS=121} [2022-09-20 20:56:51,676 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 97 predicate places. [2022-09-20 20:56:51,676 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 121 transitions, 777 flow [2022-09-20 20:56:51,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:51,676 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] [2022-09-20 20:56:51,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-20 20:56:51,677 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash -295179098, now seen corresponding path program 15 times [2022-09-20 20:56:51,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:51,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960426231] [2022-09-20 20:56:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:51,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:51,750 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 20:56:51,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:51,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960426231] [2022-09-20 20:56:51,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960426231] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:51,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:51,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:51,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968703424] [2022-09-20 20:56:51,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:51,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:51,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:51,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:51,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:51,752 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:51,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 121 transitions, 777 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:51,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:51,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:51,935 INFO L130 PetriNetUnfolder]: 70/377 cut-off events. [2022-09-20 20:56:51,935 INFO L131 PetriNetUnfolder]: For 1667/1671 co-relation queries the response was YES. [2022-09-20 20:56:51,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 377 events. 70/377 cut-off events. For 1667/1671 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1762 event pairs, 38 based on Foata normal form. 1/372 useless extension candidates. Maximal degree in co-relation 1499. Up to 140 conditions per place. [2022-09-20 20:56:51,938 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 22 changer transitions 25/157 dead transitions. [2022-09-20 20:56:51,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 157 transitions, 1390 flow [2022-09-20 20:56:51,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 20:56:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 20:56:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1086 transitions. [2022-09-20 20:56:51,940 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6654411764705882 [2022-09-20 20:56:51,940 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1086 transitions. [2022-09-20 20:56:51,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1086 transitions. [2022-09-20 20:56:51,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:51,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1086 transitions. [2022-09-20 20:56:51,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.875) internal successors, (1086), 16 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,963 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,963 INFO L175 Difference]: Start difference. First operand has 188 places, 121 transitions, 777 flow. Second operand 16 states and 1086 transitions. [2022-09-20 20:56:51,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 157 transitions, 1390 flow [2022-09-20 20:56:51,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 157 transitions, 1257 flow, removed 41 selfloop flow, removed 16 redundant places. [2022-09-20 20:56:51,971 INFO L231 Difference]: Finished difference. Result has 183 places, 126 transitions, 850 flow [2022-09-20 20:56:51,971 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=850, PETRI_PLACES=183, PETRI_TRANSITIONS=126} [2022-09-20 20:56:51,971 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 92 predicate places. [2022-09-20 20:56:51,971 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 126 transitions, 850 flow [2022-09-20 20:56:51,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:51,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:51,972 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] [2022-09-20 20:56:51,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-20 20:56:51,972 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:51,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2002787190, now seen corresponding path program 16 times [2022-09-20 20:56:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:51,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771855374] [2022-09-20 20:56:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:52,041 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 20:56:52,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:52,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771855374] [2022-09-20 20:56:52,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771855374] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:52,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:52,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:52,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225497495] [2022-09-20 20:56:52,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:52,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:52,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:52,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:52,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:52,044 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:52,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 126 transitions, 850 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:52,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:52,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:52,219 INFO L130 PetriNetUnfolder]: 61/339 cut-off events. [2022-09-20 20:56:52,219 INFO L131 PetriNetUnfolder]: For 1247/1251 co-relation queries the response was YES. [2022-09-20 20:56:52,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 339 events. 61/339 cut-off events. For 1247/1251 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1482 event pairs, 38 based on Foata normal form. 1/334 useless extension candidates. Maximal degree in co-relation 1303. Up to 134 conditions per place. [2022-09-20 20:56:52,222 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 45 selfloop transitions, 10 changer transitions 30/146 dead transitions. [2022-09-20 20:56:52,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 146 transitions, 1211 flow [2022-09-20 20:56:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:56:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:56:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1208 transitions. [2022-09-20 20:56:52,225 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6579520697167756 [2022-09-20 20:56:52,225 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1208 transitions. [2022-09-20 20:56:52,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1208 transitions. [2022-09-20 20:56:52,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:52,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1208 transitions. [2022-09-20 20:56:52,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.11111111111111) internal successors, (1208), 18 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,229 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,229 INFO L175 Difference]: Start difference. First operand has 183 places, 126 transitions, 850 flow. Second operand 18 states and 1208 transitions. [2022-09-20 20:56:52,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 146 transitions, 1211 flow [2022-09-20 20:56:52,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 146 transitions, 1109 flow, removed 29 selfloop flow, removed 9 redundant places. [2022-09-20 20:56:52,239 INFO L231 Difference]: Finished difference. Result has 191 places, 111 transitions, 618 flow [2022-09-20 20:56:52,239 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=618, PETRI_PLACES=191, PETRI_TRANSITIONS=111} [2022-09-20 20:56:52,240 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 100 predicate places. [2022-09-20 20:56:52,240 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 111 transitions, 618 flow [2022-09-20 20:56:52,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:52,241 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] [2022-09-20 20:56:52,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-20 20:56:52,241 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:52,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1010734676, now seen corresponding path program 17 times [2022-09-20 20:56:52,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:52,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891392024] [2022-09-20 20:56:52,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:52,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:52,324 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 20:56:52,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:52,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891392024] [2022-09-20 20:56:52,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891392024] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:52,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:52,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189623516] [2022-09-20 20:56:52,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:52,326 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:52,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 111 transitions, 618 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:52,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:52,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:52,544 INFO L130 PetriNetUnfolder]: 66/352 cut-off events. [2022-09-20 20:56:52,544 INFO L131 PetriNetUnfolder]: For 1374/1378 co-relation queries the response was YES. [2022-09-20 20:56:52,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 352 events. 66/352 cut-off events. For 1374/1378 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1561 event pairs, 39 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 1347. Up to 134 conditions per place. [2022-09-20 20:56:52,548 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 43 selfloop transitions, 20 changer transitions 23/147 dead transitions. [2022-09-20 20:56:52,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 147 transitions, 1210 flow [2022-09-20 20:56:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:56:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:56:52,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-09-20 20:56:52,549 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-09-20 20:56:52,550 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-09-20 20:56:52,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-09-20 20:56:52,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:52,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-09-20 20:56:52,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,553 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,553 INFO L175 Difference]: Start difference. First operand has 191 places, 111 transitions, 618 flow. Second operand 18 states and 1213 transitions. [2022-09-20 20:56:52,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 147 transitions, 1210 flow [2022-09-20 20:56:52,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 147 transitions, 1083 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-09-20 20:56:52,560 INFO L231 Difference]: Finished difference. Result has 177 places, 120 transitions, 766 flow [2022-09-20 20:56:52,560 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=766, PETRI_PLACES=177, PETRI_TRANSITIONS=120} [2022-09-20 20:56:52,560 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 86 predicate places. [2022-09-20 20:56:52,560 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 120 transitions, 766 flow [2022-09-20 20:56:52,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:52,561 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] [2022-09-20 20:56:52,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-20 20:56:52,561 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:52,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash -926400020, now seen corresponding path program 18 times [2022-09-20 20:56:52,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:52,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413259168] [2022-09-20 20:56:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:56:52,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:52,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413259168] [2022-09-20 20:56:52,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413259168] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:52,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:52,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:52,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724508550] [2022-09-20 20:56:52,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:52,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:52,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:52,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:52,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:52,634 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:52,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 120 transitions, 766 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:52,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:52,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:52,820 INFO L130 PetriNetUnfolder]: 62/344 cut-off events. [2022-09-20 20:56:52,821 INFO L131 PetriNetUnfolder]: For 1142/1146 co-relation queries the response was YES. [2022-09-20 20:56:52,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 344 events. 62/344 cut-off events. For 1142/1146 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1515 event pairs, 35 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 1304. Up to 134 conditions per place. [2022-09-20 20:56:52,823 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 44 selfloop transitions, 22 changer transitions 24/151 dead transitions. [2022-09-20 20:56:52,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 151 transitions, 1291 flow [2022-09-20 20:56:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 20:56:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 20:56:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1149 transitions. [2022-09-20 20:56:52,825 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6626297577854672 [2022-09-20 20:56:52,825 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1149 transitions. [2022-09-20 20:56:52,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1149 transitions. [2022-09-20 20:56:52,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:52,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1149 transitions. [2022-09-20 20:56:52,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.58823529411765) internal successors, (1149), 17 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,841 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,841 INFO L175 Difference]: Start difference. First operand has 177 places, 120 transitions, 766 flow. Second operand 17 states and 1149 transitions. [2022-09-20 20:56:52,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 151 transitions, 1291 flow [2022-09-20 20:56:52,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 151 transitions, 1210 flow, removed 36 selfloop flow, removed 5 redundant places. [2022-09-20 20:56:52,848 INFO L231 Difference]: Finished difference. Result has 189 places, 124 transitions, 864 flow [2022-09-20 20:56:52,848 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=864, PETRI_PLACES=189, PETRI_TRANSITIONS=124} [2022-09-20 20:56:52,849 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 98 predicate places. [2022-09-20 20:56:52,849 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 124 transitions, 864 flow [2022-09-20 20:56:52,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:52,849 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] [2022-09-20 20:56:52,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-20 20:56:52,850 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:52,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:52,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1812798972, now seen corresponding path program 19 times [2022-09-20 20:56:52,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:52,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906958930] [2022-09-20 20:56:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:52,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:52,935 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 20:56:52,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:52,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906958930] [2022-09-20 20:56:52,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906958930] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:52,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:52,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:52,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020706295] [2022-09-20 20:56:52,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:52,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:52,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:52,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:52,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:52,939 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:52,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 124 transitions, 864 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:52,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:52,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:52,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:53,163 INFO L130 PetriNetUnfolder]: 56/335 cut-off events. [2022-09-20 20:56:53,163 INFO L131 PetriNetUnfolder]: For 1087/1091 co-relation queries the response was YES. [2022-09-20 20:56:53,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 335 events. 56/335 cut-off events. For 1087/1091 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1454 event pairs, 35 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1244. Up to 134 conditions per place. [2022-09-20 20:56:53,166 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 42 selfloop transitions, 13 changer transitions 28/144 dead transitions. [2022-09-20 20:56:53,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 144 transitions, 1236 flow [2022-09-20 20:56:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:56:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:56:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1208 transitions. [2022-09-20 20:56:53,168 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6579520697167756 [2022-09-20 20:56:53,168 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1208 transitions. [2022-09-20 20:56:53,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1208 transitions. [2022-09-20 20:56:53,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:53,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1208 transitions. [2022-09-20 20:56:53,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.11111111111111) internal successors, (1208), 18 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,171 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,171 INFO L175 Difference]: Start difference. First operand has 189 places, 124 transitions, 864 flow. Second operand 18 states and 1208 transitions. [2022-09-20 20:56:53,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 144 transitions, 1236 flow [2022-09-20 20:56:53,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 144 transitions, 1129 flow, removed 33 selfloop flow, removed 8 redundant places. [2022-09-20 20:56:53,178 INFO L231 Difference]: Finished difference. Result has 198 places, 115 transitions, 700 flow [2022-09-20 20:56:53,179 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=700, PETRI_PLACES=198, PETRI_TRANSITIONS=115} [2022-09-20 20:56:53,179 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 107 predicate places. [2022-09-20 20:56:53,179 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 115 transitions, 700 flow [2022-09-20 20:56:53,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:53,179 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] [2022-09-20 20:56:53,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-20 20:56:53,180 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:53,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:53,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1194196458, now seen corresponding path program 20 times [2022-09-20 20:56:53,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:53,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946239692] [2022-09-20 20:56:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:53,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:53,242 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 20:56:53,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:53,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946239692] [2022-09-20 20:56:53,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946239692] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:53,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:53,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:53,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522828570] [2022-09-20 20:56:53,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:53,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:53,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:53,243 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:53,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 115 transitions, 700 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:53,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:53,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:53,434 INFO L130 PetriNetUnfolder]: 48/266 cut-off events. [2022-09-20 20:56:53,434 INFO L131 PetriNetUnfolder]: For 754/758 co-relation queries the response was YES. [2022-09-20 20:56:53,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1004 conditions, 266 events. 48/266 cut-off events. For 754/758 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1051 event pairs, 35 based on Foata normal form. 1/262 useless extension candidates. Maximal degree in co-relation 944. Up to 112 conditions per place. [2022-09-20 20:56:53,436 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 28 selfloop transitions, 0 changer transitions 42/125 dead transitions. [2022-09-20 20:56:53,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 125 transitions, 910 flow [2022-09-20 20:56:53,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 20:56:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 20:56:53,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1135 transitions. [2022-09-20 20:56:53,438 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.654555940023068 [2022-09-20 20:56:53,438 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1135 transitions. [2022-09-20 20:56:53,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1135 transitions. [2022-09-20 20:56:53,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:53,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1135 transitions. [2022-09-20 20:56:53,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,441 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,441 INFO L175 Difference]: Start difference. First operand has 198 places, 115 transitions, 700 flow. Second operand 17 states and 1135 transitions. [2022-09-20 20:56:53,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 125 transitions, 910 flow [2022-09-20 20:56:53,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 125 transitions, 806 flow, removed 27 selfloop flow, removed 21 redundant places. [2022-09-20 20:56:53,446 INFO L231 Difference]: Finished difference. Result has 179 places, 83 transitions, 288 flow [2022-09-20 20:56:53,447 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=288, PETRI_PLACES=179, PETRI_TRANSITIONS=83} [2022-09-20 20:56:53,447 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-09-20 20:56:53,447 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 83 transitions, 288 flow [2022-09-20 20:56:53,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:53,447 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] [2022-09-20 20:56:53,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-20 20:56:53,447 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:53,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1102674884, now seen corresponding path program 1 times [2022-09-20 20:56:53,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:53,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767420002] [2022-09-20 20:56:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:53,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:53,516 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 20:56:53,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:53,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767420002] [2022-09-20 20:56:53,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767420002] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:53,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:53,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:53,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645908683] [2022-09-20 20:56:53,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:53,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:53,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:53,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:53,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:53,517 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:53,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 83 transitions, 288 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:53,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:53,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:53,732 INFO L130 PetriNetUnfolder]: 66/288 cut-off events. [2022-09-20 20:56:53,732 INFO L131 PetriNetUnfolder]: For 706/707 co-relation queries the response was YES. [2022-09-20 20:56:53,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 288 events. 66/288 cut-off events. For 706/707 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1069 event pairs, 11 based on Foata normal form. 1/285 useless extension candidates. Maximal degree in co-relation 936. Up to 56 conditions per place. [2022-09-20 20:56:53,735 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 44 selfloop transitions, 12 changer transitions 32/143 dead transitions. [2022-09-20 20:56:53,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 143 transitions, 919 flow [2022-09-20 20:56:53,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:56:53,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:56:53,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1349 transitions. [2022-09-20 20:56:53,736 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6612745098039216 [2022-09-20 20:56:53,736 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1349 transitions. [2022-09-20 20:56:53,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1349 transitions. [2022-09-20 20:56:53,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:53,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1349 transitions. [2022-09-20 20:56:53,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.45) internal successors, (1349), 20 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,739 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,739 INFO L175 Difference]: Start difference. First operand has 179 places, 83 transitions, 288 flow. Second operand 20 states and 1349 transitions. [2022-09-20 20:56:53,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 143 transitions, 919 flow [2022-09-20 20:56:53,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 143 transitions, 782 flow, removed 62 selfloop flow, removed 18 redundant places. [2022-09-20 20:56:53,743 INFO L231 Difference]: Finished difference. Result has 151 places, 93 transitions, 392 flow [2022-09-20 20:56:53,743 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=392, PETRI_PLACES=151, PETRI_TRANSITIONS=93} [2022-09-20 20:56:53,743 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 60 predicate places. [2022-09-20 20:56:53,743 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 93 transitions, 392 flow [2022-09-20 20:56:53,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:53,744 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] [2022-09-20 20:56:53,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-09-20 20:56:53,744 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:53,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:53,744 INFO L85 PathProgramCache]: Analyzing trace with hash 307988166, now seen corresponding path program 2 times [2022-09-20 20:56:53,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:53,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360108952] [2022-09-20 20:56:53,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:53,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:53,823 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 20:56:53,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:53,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360108952] [2022-09-20 20:56:53,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360108952] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:53,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:53,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:53,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090797909] [2022-09-20 20:56:53,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:53,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:53,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:53,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:53,825 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:53,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 93 transitions, 392 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:53,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:53,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:53,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:54,105 INFO L130 PetriNetUnfolder]: 63/281 cut-off events. [2022-09-20 20:56:54,105 INFO L131 PetriNetUnfolder]: For 1343/1347 co-relation queries the response was YES. [2022-09-20 20:56:54,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 281 events. 63/281 cut-off events. For 1343/1347 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1074 event pairs, 5 based on Foata normal form. 1/278 useless extension candidates. Maximal degree in co-relation 1116. Up to 36 conditions per place. [2022-09-20 20:56:54,107 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 63 selfloop transitions, 10 changer transitions 39/167 dead transitions. [2022-09-20 20:56:54,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 167 transitions, 1284 flow [2022-09-20 20:56:54,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-20 20:56:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-20 20:56:54,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1604 transitions. [2022-09-20 20:56:54,109 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-09-20 20:56:54,109 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1604 transitions. [2022-09-20 20:56:54,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1604 transitions. [2022-09-20 20:56:54,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:54,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1604 transitions. [2022-09-20 20:56:54,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 66.83333333333333) internal successors, (1604), 24 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,113 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,113 INFO L175 Difference]: Start difference. First operand has 151 places, 93 transitions, 392 flow. Second operand 24 states and 1604 transitions. [2022-09-20 20:56:54,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 167 transitions, 1284 flow [2022-09-20 20:56:54,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 167 transitions, 1016 flow, removed 128 selfloop flow, removed 14 redundant places. [2022-09-20 20:56:54,117 INFO L231 Difference]: Finished difference. Result has 166 places, 93 transitions, 390 flow [2022-09-20 20:56:54,117 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=390, PETRI_PLACES=166, PETRI_TRANSITIONS=93} [2022-09-20 20:56:54,118 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 75 predicate places. [2022-09-20 20:56:54,118 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 93 transitions, 390 flow [2022-09-20 20:56:54,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:54,118 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] [2022-09-20 20:56:54,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-09-20 20:56:54,118 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:54,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1223932278, now seen corresponding path program 3 times [2022-09-20 20:56:54,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:54,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589886016] [2022-09-20 20:56:54,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:54,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:54,207 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 20:56:54,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:54,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589886016] [2022-09-20 20:56:54,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589886016] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:54,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:54,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:54,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781200061] [2022-09-20 20:56:54,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:54,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:54,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:54,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:54,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:54,209 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:54,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 93 transitions, 390 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:54,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:54,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:54,508 INFO L130 PetriNetUnfolder]: 62/308 cut-off events. [2022-09-20 20:56:54,509 INFO L131 PetriNetUnfolder]: For 982/983 co-relation queries the response was YES. [2022-09-20 20:56:54,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 308 events. 62/308 cut-off events. For 982/983 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1294 event pairs, 0 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 1098. Up to 49 conditions per place. [2022-09-20 20:56:54,512 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 52 selfloop transitions, 10 changer transitions 41/158 dead transitions. [2022-09-20 20:56:54,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 158 transitions, 1141 flow [2022-09-20 20:56:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-20 20:56:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-20 20:56:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1606 transitions. [2022-09-20 20:56:54,513 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6560457516339869 [2022-09-20 20:56:54,513 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1606 transitions. [2022-09-20 20:56:54,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1606 transitions. [2022-09-20 20:56:54,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:54,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1606 transitions. [2022-09-20 20:56:54,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 66.91666666666667) internal successors, (1606), 24 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,518 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,518 INFO L175 Difference]: Start difference. First operand has 166 places, 93 transitions, 390 flow. Second operand 24 states and 1606 transitions. [2022-09-20 20:56:54,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 158 transitions, 1141 flow [2022-09-20 20:56:54,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 158 transitions, 1007 flow, removed 27 selfloop flow, removed 20 redundant places. [2022-09-20 20:56:54,523 INFO L231 Difference]: Finished difference. Result has 170 places, 93 transitions, 412 flow [2022-09-20 20:56:54,523 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=412, PETRI_PLACES=170, PETRI_TRANSITIONS=93} [2022-09-20 20:56:54,524 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2022-09-20 20:56:54,524 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 93 transitions, 412 flow [2022-09-20 20:56:54,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:54,524 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] [2022-09-20 20:56:54,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-09-20 20:56:54,524 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:54,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1869930814, now seen corresponding path program 4 times [2022-09-20 20:56:54,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:54,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710106455] [2022-09-20 20:56:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:54,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:54,595 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 20:56:54,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:54,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710106455] [2022-09-20 20:56:54,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710106455] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:54,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:54,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:54,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107448579] [2022-09-20 20:56:54,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:54,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:54,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:54,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:54,597 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:54,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 93 transitions, 412 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:54,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:54,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:54,761 INFO L130 PetriNetUnfolder]: 60/296 cut-off events. [2022-09-20 20:56:54,761 INFO L131 PetriNetUnfolder]: For 1905/1911 co-relation queries the response was YES. [2022-09-20 20:56:54,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 296 events. 60/296 cut-off events. For 1905/1911 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1187 event pairs, 13 based on Foata normal form. 2/296 useless extension candidates. Maximal degree in co-relation 1282. Up to 69 conditions per place. [2022-09-20 20:56:54,764 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 43 selfloop transitions, 18 changer transitions 22/138 dead transitions. [2022-09-20 20:56:54,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 138 transitions, 1078 flow [2022-09-20 20:56:54,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 20:56:54,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 20:56:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1082 transitions. [2022-09-20 20:56:54,765 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6629901960784313 [2022-09-20 20:56:54,765 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1082 transitions. [2022-09-20 20:56:54,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1082 transitions. [2022-09-20 20:56:54,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:54,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1082 transitions. [2022-09-20 20:56:54,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.625) internal successors, (1082), 16 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,768 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,768 INFO L175 Difference]: Start difference. First operand has 170 places, 93 transitions, 412 flow. Second operand 16 states and 1082 transitions. [2022-09-20 20:56:54,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 138 transitions, 1078 flow [2022-09-20 20:56:54,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 138 transitions, 891 flow, removed 71 selfloop flow, removed 20 redundant places. [2022-09-20 20:56:54,773 INFO L231 Difference]: Finished difference. Result has 159 places, 103 transitions, 551 flow [2022-09-20 20:56:54,773 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=551, PETRI_PLACES=159, PETRI_TRANSITIONS=103} [2022-09-20 20:56:54,773 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 68 predicate places. [2022-09-20 20:56:54,773 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 103 transitions, 551 flow [2022-09-20 20:56:54,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:54,774 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] [2022-09-20 20:56:54,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-09-20 20:56:54,774 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:54,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:54,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1692530934, now seen corresponding path program 5 times [2022-09-20 20:56:54,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:54,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390398649] [2022-09-20 20:56:54,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:54,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:54,867 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 20:56:54,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:54,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390398649] [2022-09-20 20:56:54,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390398649] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:54,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:54,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:54,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297646517] [2022-09-20 20:56:54,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:54,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:54,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:54,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:54,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:54,868 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:54,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 103 transitions, 551 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:54,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:54,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:54,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:55,164 INFO L130 PetriNetUnfolder]: 68/333 cut-off events. [2022-09-20 20:56:55,164 INFO L131 PetriNetUnfolder]: For 1780/1785 co-relation queries the response was YES. [2022-09-20 20:56:55,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 333 events. 68/333 cut-off events. For 1780/1785 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1489 event pairs, 15 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1407. Up to 71 conditions per place. [2022-09-20 20:56:55,167 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 60 selfloop transitions, 17 changer transitions 32/164 dead transitions. [2022-09-20 20:56:55,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 164 transitions, 1405 flow [2022-09-20 20:56:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:56:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:56:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1415 transitions. [2022-09-20 20:56:55,170 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6605975723622782 [2022-09-20 20:56:55,170 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1415 transitions. [2022-09-20 20:56:55,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1415 transitions. [2022-09-20 20:56:55,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:55,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1415 transitions. [2022-09-20 20:56:55,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.38095238095238) internal successors, (1415), 21 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,174 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,174 INFO L175 Difference]: Start difference. First operand has 159 places, 103 transitions, 551 flow. Second operand 21 states and 1415 transitions. [2022-09-20 20:56:55,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 164 transitions, 1405 flow [2022-09-20 20:56:55,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 164 transitions, 1258 flow, removed 56 selfloop flow, removed 7 redundant places. [2022-09-20 20:56:55,181 INFO L231 Difference]: Finished difference. Result has 181 places, 114 transitions, 698 flow [2022-09-20 20:56:55,181 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=698, PETRI_PLACES=181, PETRI_TRANSITIONS=114} [2022-09-20 20:56:55,181 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 90 predicate places. [2022-09-20 20:56:55,182 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 114 transitions, 698 flow [2022-09-20 20:56:55,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:55,182 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] [2022-09-20 20:56:55,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-09-20 20:56:55,182 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:55,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:55,182 INFO L85 PathProgramCache]: Analyzing trace with hash -43232724, now seen corresponding path program 6 times [2022-09-20 20:56:55,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:55,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345430926] [2022-09-20 20:56:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:55,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:55,254 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 20:56:55,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:55,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345430926] [2022-09-20 20:56:55,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345430926] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:55,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:55,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:55,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754021598] [2022-09-20 20:56:55,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:55,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:55,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:55,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:55,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:55,256 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:55,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 114 transitions, 698 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:55,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:55,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:55,471 INFO L130 PetriNetUnfolder]: 63/327 cut-off events. [2022-09-20 20:56:55,471 INFO L131 PetriNetUnfolder]: For 2883/2891 co-relation queries the response was YES. [2022-09-20 20:56:55,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 327 events. 63/327 cut-off events. For 2883/2891 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1493 event pairs, 17 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1579. Up to 84 conditions per place. [2022-09-20 20:56:55,474 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 56 selfloop transitions, 25 changer transitions 32/168 dead transitions. [2022-09-20 20:56:55,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 168 transitions, 1670 flow [2022-09-20 20:56:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:56:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:56:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1345 transitions. [2022-09-20 20:56:55,475 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6593137254901961 [2022-09-20 20:56:55,476 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1345 transitions. [2022-09-20 20:56:55,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1345 transitions. [2022-09-20 20:56:55,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:55,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1345 transitions. [2022-09-20 20:56:55,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.25) internal successors, (1345), 20 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,482 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,482 INFO L175 Difference]: Start difference. First operand has 181 places, 114 transitions, 698 flow. Second operand 20 states and 1345 transitions. [2022-09-20 20:56:55,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 168 transitions, 1670 flow [2022-09-20 20:56:55,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 168 transitions, 1416 flow, removed 127 selfloop flow, removed 11 redundant places. [2022-09-20 20:56:55,490 INFO L231 Difference]: Finished difference. Result has 191 places, 123 transitions, 855 flow [2022-09-20 20:56:55,490 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=855, PETRI_PLACES=191, PETRI_TRANSITIONS=123} [2022-09-20 20:56:55,490 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 100 predicate places. [2022-09-20 20:56:55,491 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 123 transitions, 855 flow [2022-09-20 20:56:55,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:55,491 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] [2022-09-20 20:56:55,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-09-20 20:56:55,491 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:55,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:55,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1067530540, now seen corresponding path program 7 times [2022-09-20 20:56:55,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:55,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218616028] [2022-09-20 20:56:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:55,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:55,567 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 20:56:55,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:55,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218616028] [2022-09-20 20:56:55,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218616028] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:55,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:55,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:55,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182454240] [2022-09-20 20:56:55,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:55,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:55,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:55,569 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:55,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 123 transitions, 855 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:55,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:55,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:55,813 INFO L130 PetriNetUnfolder]: 61/325 cut-off events. [2022-09-20 20:56:55,813 INFO L131 PetriNetUnfolder]: For 2487/2502 co-relation queries the response was YES. [2022-09-20 20:56:55,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 325 events. 61/325 cut-off events. For 2487/2502 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1505 event pairs, 10 based on Foata normal form. 7/329 useless extension candidates. Maximal degree in co-relation 1514. Up to 68 conditions per place. [2022-09-20 20:56:55,816 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 58 selfloop transitions, 26 changer transitions 38/177 dead transitions. [2022-09-20 20:56:55,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 177 transitions, 1701 flow [2022-09-20 20:56:55,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 20:56:55,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 20:56:55,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1476 transitions. [2022-09-20 20:56:55,818 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6577540106951871 [2022-09-20 20:56:55,818 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1476 transitions. [2022-09-20 20:56:55,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1476 transitions. [2022-09-20 20:56:55,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:55,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1476 transitions. [2022-09-20 20:56:55,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.0909090909091) internal successors, (1476), 22 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,821 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,821 INFO L175 Difference]: Start difference. First operand has 191 places, 123 transitions, 855 flow. Second operand 22 states and 1476 transitions. [2022-09-20 20:56:55,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 177 transitions, 1701 flow [2022-09-20 20:56:55,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 177 transitions, 1476 flow, removed 94 selfloop flow, removed 14 redundant places. [2022-09-20 20:56:55,830 INFO L231 Difference]: Finished difference. Result has 200 places, 123 transitions, 849 flow [2022-09-20 20:56:55,831 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=849, PETRI_PLACES=200, PETRI_TRANSITIONS=123} [2022-09-20 20:56:55,831 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 109 predicate places. [2022-09-20 20:56:55,831 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 123 transitions, 849 flow [2022-09-20 20:56:55,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:55,831 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] [2022-09-20 20:56:55,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-09-20 20:56:55,832 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:55,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:55,832 INFO L85 PathProgramCache]: Analyzing trace with hash 882953270, now seen corresponding path program 8 times [2022-09-20 20:56:55,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:55,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207488692] [2022-09-20 20:56:55,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:55,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:55,897 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 20:56:55,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:55,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207488692] [2022-09-20 20:56:55,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207488692] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:55,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:55,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:55,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550511117] [2022-09-20 20:56:55,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:55,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:55,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:55,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:55,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:55,899 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:55,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 123 transitions, 849 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:55,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:55,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:55,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:56,063 INFO L130 PetriNetUnfolder]: 48/280 cut-off events. [2022-09-20 20:56:56,063 INFO L131 PetriNetUnfolder]: For 1814/1828 co-relation queries the response was YES. [2022-09-20 20:56:56,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 280 events. 48/280 cut-off events. For 1814/1828 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1132 event pairs, 9 based on Foata normal form. 4/282 useless extension candidates. Maximal degree in co-relation 1242. Up to 66 conditions per place. [2022-09-20 20:56:56,066 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 14 changer transitions 35/153 dead transitions. [2022-09-20 20:56:56,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 153 transitions, 1323 flow [2022-09-20 20:56:56,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:56:56,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:56:56,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1207 transitions. [2022-09-20 20:56:56,072 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6574074074074074 [2022-09-20 20:56:56,072 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1207 transitions. [2022-09-20 20:56:56,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1207 transitions. [2022-09-20 20:56:56,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:56,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1207 transitions. [2022-09-20 20:56:56,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.05555555555556) internal successors, (1207), 18 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,075 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,075 INFO L175 Difference]: Start difference. First operand has 200 places, 123 transitions, 849 flow. Second operand 18 states and 1207 transitions. [2022-09-20 20:56:56,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 153 transitions, 1323 flow [2022-09-20 20:56:56,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 153 transitions, 1206 flow, removed 41 selfloop flow, removed 15 redundant places. [2022-09-20 20:56:56,086 INFO L231 Difference]: Finished difference. Result has 195 places, 108 transitions, 640 flow [2022-09-20 20:56:56,086 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=640, PETRI_PLACES=195, PETRI_TRANSITIONS=108} [2022-09-20 20:56:56,086 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 104 predicate places. [2022-09-20 20:56:56,087 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 108 transitions, 640 flow [2022-09-20 20:56:56,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:56,087 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] [2022-09-20 20:56:56,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-09-20 20:56:56,087 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:56,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1548977192, now seen corresponding path program 9 times [2022-09-20 20:56:56,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:56,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429068083] [2022-09-20 20:56:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:56,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:56,150 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 20:56:56,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:56,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429068083] [2022-09-20 20:56:56,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429068083] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:56,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:56,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:56,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182204233] [2022-09-20 20:56:56,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:56,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:56,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:56,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:56,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:56,151 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:56,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 108 transitions, 640 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:56,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:56,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:56,361 INFO L130 PetriNetUnfolder]: 50/284 cut-off events. [2022-09-20 20:56:56,361 INFO L131 PetriNetUnfolder]: For 1740/1744 co-relation queries the response was YES. [2022-09-20 20:56:56,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1325 conditions, 284 events. 50/284 cut-off events. For 1740/1744 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1120 event pairs, 15 based on Foata normal form. 1/282 useless extension candidates. Maximal degree in co-relation 1260. Up to 66 conditions per place. [2022-09-20 20:56:56,367 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 46 selfloop transitions, 22 changer transitions 25/148 dead transitions. [2022-09-20 20:56:56,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 148 transitions, 1279 flow [2022-09-20 20:56:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:56:56,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:56:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-09-20 20:56:56,369 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-09-20 20:56:56,369 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-09-20 20:56:56,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-09-20 20:56:56,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:56,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-09-20 20:56:56,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,371 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,371 INFO L175 Difference]: Start difference. First operand has 195 places, 108 transitions, 640 flow. Second operand 18 states and 1213 transitions. [2022-09-20 20:56:56,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 148 transitions, 1279 flow [2022-09-20 20:56:56,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 148 transitions, 1087 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-09-20 20:56:56,398 INFO L231 Difference]: Finished difference. Result has 179 places, 117 transitions, 741 flow [2022-09-20 20:56:56,399 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=741, PETRI_PLACES=179, PETRI_TRANSITIONS=117} [2022-09-20 20:56:56,399 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-09-20 20:56:56,399 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 117 transitions, 741 flow [2022-09-20 20:56:56,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:56,400 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] [2022-09-20 20:56:56,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-09-20 20:56:56,400 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:56,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:56,400 INFO L85 PathProgramCache]: Analyzing trace with hash 979063814, now seen corresponding path program 10 times [2022-09-20 20:56:56,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:56,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675892240] [2022-09-20 20:56:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:56,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:56,480 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 20:56:56,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:56,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675892240] [2022-09-20 20:56:56,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675892240] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:56,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:56,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:56,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039811153] [2022-09-20 20:56:56,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:56,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:56,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:56,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:56,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:56,483 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:56,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 117 transitions, 741 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:56,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:56,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:56,704 INFO L130 PetriNetUnfolder]: 47/273 cut-off events. [2022-09-20 20:56:56,704 INFO L131 PetriNetUnfolder]: For 1202/1211 co-relation queries the response was YES. [2022-09-20 20:56:56,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 273 events. 47/273 cut-off events. For 1202/1211 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1081 event pairs, 14 based on Foata normal form. 3/272 useless extension candidates. Maximal degree in co-relation 1131. Up to 66 conditions per place. [2022-09-20 20:56:56,706 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 24 changer transitions 26/152 dead transitions. [2022-09-20 20:56:56,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 152 transitions, 1286 flow [2022-09-20 20:56:56,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 20:56:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 20:56:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1149 transitions. [2022-09-20 20:56:56,708 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6626297577854672 [2022-09-20 20:56:56,708 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1149 transitions. [2022-09-20 20:56:56,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1149 transitions. [2022-09-20 20:56:56,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:56,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1149 transitions. [2022-09-20 20:56:56,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.58823529411765) internal successors, (1149), 17 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,711 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,711 INFO L175 Difference]: Start difference. First operand has 179 places, 117 transitions, 741 flow. Second operand 17 states and 1149 transitions. [2022-09-20 20:56:56,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 152 transitions, 1286 flow [2022-09-20 20:56:56,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 152 transitions, 1201 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-09-20 20:56:56,717 INFO L231 Difference]: Finished difference. Result has 191 places, 121 transitions, 825 flow [2022-09-20 20:56:56,717 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=825, PETRI_PLACES=191, PETRI_TRANSITIONS=121} [2022-09-20 20:56:56,718 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 100 predicate places. [2022-09-20 20:56:56,718 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 121 transitions, 825 flow [2022-09-20 20:56:56,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:56,718 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] [2022-09-20 20:56:56,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-09-20 20:56:56,718 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:56,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -992463862, now seen corresponding path program 11 times [2022-09-20 20:56:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:56,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406601171] [2022-09-20 20:56:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:56,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:56,786 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 20:56:56,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:56,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406601171] [2022-09-20 20:56:56,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406601171] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:56,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:56,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:56,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110009383] [2022-09-20 20:56:56,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:56,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:56,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:56,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:56,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:56,788 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:56,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 121 transitions, 825 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:56,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:56,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:56,983 INFO L130 PetriNetUnfolder]: 44/272 cut-off events. [2022-09-20 20:56:56,983 INFO L131 PetriNetUnfolder]: For 1251/1259 co-relation queries the response was YES. [2022-09-20 20:56:56,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1177 conditions, 272 events. 44/272 cut-off events. For 1251/1259 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1087 event pairs, 12 based on Foata normal form. 3/272 useless extension candidates. Maximal degree in co-relation 1111. Up to 66 conditions per place. [2022-09-20 20:56:56,985 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 14 changer transitions 34/150 dead transitions. [2022-09-20 20:56:56,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 150 transitions, 1267 flow [2022-09-20 20:56:56,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 20:56:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 20:56:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1148 transitions. [2022-09-20 20:56:56,987 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6620530565167243 [2022-09-20 20:56:56,987 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1148 transitions. [2022-09-20 20:56:56,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1148 transitions. [2022-09-20 20:56:56,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:56,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1148 transitions. [2022-09-20 20:56:56,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.52941176470588) internal successors, (1148), 17 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,989 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,989 INFO L175 Difference]: Start difference. First operand has 191 places, 121 transitions, 825 flow. Second operand 17 states and 1148 transitions. [2022-09-20 20:56:56,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 150 transitions, 1267 flow [2022-09-20 20:56:56,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 150 transitions, 1168 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-09-20 20:56:56,997 INFO L231 Difference]: Finished difference. Result has 198 places, 112 transitions, 674 flow [2022-09-20 20:56:56,997 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=674, PETRI_PLACES=198, PETRI_TRANSITIONS=112} [2022-09-20 20:56:56,997 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 107 predicate places. [2022-09-20 20:56:56,997 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 112 transitions, 674 flow [2022-09-20 20:56:56,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:56,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:56,997 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] [2022-09-20 20:56:56,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-09-20 20:56:56,997 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:56,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:56,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1865410540, now seen corresponding path program 12 times [2022-09-20 20:56:56,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:56,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91202878] [2022-09-20 20:56:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:56,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:57,083 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 20:56:57,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:57,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91202878] [2022-09-20 20:56:57,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91202878] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:57,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:57,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:57,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54832274] [2022-09-20 20:56:57,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:57,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:57,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:57,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:57,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:57,084 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:57,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 112 transitions, 674 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:57,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:57,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:57,295 INFO L130 PetriNetUnfolder]: 34/237 cut-off events. [2022-09-20 20:56:57,296 INFO L131 PetriNetUnfolder]: For 1095/1099 co-relation queries the response was YES. [2022-09-20 20:56:57,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 237 events. 34/237 cut-off events. For 1095/1099 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 832 event pairs, 12 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 892. Up to 53 conditions per place. [2022-09-20 20:56:57,297 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 37 selfloop transitions, 3 changer transitions 37/132 dead transitions. [2022-09-20 20:56:57,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 132 transitions, 969 flow [2022-09-20 20:56:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:56:57,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:56:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1203 transitions. [2022-09-20 20:56:57,299 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-09-20 20:56:57,300 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1203 transitions. [2022-09-20 20:56:57,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1203 transitions. [2022-09-20 20:56:57,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:57,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1203 transitions. [2022-09-20 20:56:57,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.83333333333333) internal successors, (1203), 18 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,302 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,302 INFO L175 Difference]: Start difference. First operand has 198 places, 112 transitions, 674 flow. Second operand 18 states and 1203 transitions. [2022-09-20 20:56:57,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 132 transitions, 969 flow [2022-09-20 20:56:57,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 132 transitions, 849 flow, removed 26 selfloop flow, removed 22 redundant places. [2022-09-20 20:56:57,307 INFO L231 Difference]: Finished difference. Result has 182 places, 92 transitions, 398 flow [2022-09-20 20:56:57,307 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=398, PETRI_PLACES=182, PETRI_TRANSITIONS=92} [2022-09-20 20:56:57,308 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 91 predicate places. [2022-09-20 20:56:57,308 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 92 transitions, 398 flow [2022-09-20 20:56:57,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:57,308 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] [2022-09-20 20:56:57,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-09-20 20:56:57,308 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:57,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:57,309 INFO L85 PathProgramCache]: Analyzing trace with hash -203190652, now seen corresponding path program 13 times [2022-09-20 20:56:57,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:57,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194837999] [2022-09-20 20:56:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:57,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:57,375 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 20:56:57,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:57,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194837999] [2022-09-20 20:56:57,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194837999] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:57,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:57,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:57,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778060063] [2022-09-20 20:56:57,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:57,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:57,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:57,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:57,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:57,377 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:57,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 92 transitions, 398 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:57,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:57,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:57,648 INFO L130 PetriNetUnfolder]: 39/247 cut-off events. [2022-09-20 20:56:57,648 INFO L131 PetriNetUnfolder]: For 1076/1077 co-relation queries the response was YES. [2022-09-20 20:56:57,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 247 events. 39/247 cut-off events. For 1076/1077 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 854 event pairs, 5 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 910. Up to 33 conditions per place. [2022-09-20 20:56:57,650 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 43 selfloop transitions, 19 changer transitions 32/149 dead transitions. [2022-09-20 20:56:57,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 149 transitions, 1122 flow [2022-09-20 20:56:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 20:56:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 20:56:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1473 transitions. [2022-09-20 20:56:57,651 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6564171122994652 [2022-09-20 20:56:57,651 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1473 transitions. [2022-09-20 20:56:57,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1473 transitions. [2022-09-20 20:56:57,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:57,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1473 transitions. [2022-09-20 20:56:57,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 66.95454545454545) internal successors, (1473), 22 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,654 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,654 INFO L175 Difference]: Start difference. First operand has 182 places, 92 transitions, 398 flow. Second operand 22 states and 1473 transitions. [2022-09-20 20:56:57,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 149 transitions, 1122 flow [2022-09-20 20:56:57,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 149 transitions, 907 flow, removed 39 selfloop flow, removed 23 redundant places. [2022-09-20 20:56:57,658 INFO L231 Difference]: Finished difference. Result has 166 places, 103 transitions, 516 flow [2022-09-20 20:56:57,658 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=516, PETRI_PLACES=166, PETRI_TRANSITIONS=103} [2022-09-20 20:56:57,658 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 75 predicate places. [2022-09-20 20:56:57,658 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 103 transitions, 516 flow [2022-09-20 20:56:57,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:57,658 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] [2022-09-20 20:56:57,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-09-20 20:56:57,658 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:57,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:57,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1099084962, now seen corresponding path program 14 times [2022-09-20 20:56:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:57,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878684789] [2022-09-20 20:56:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:57,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:57,726 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 20:56:57,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:57,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878684789] [2022-09-20 20:56:57,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878684789] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:57,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:57,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:57,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693594809] [2022-09-20 20:56:57,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:57,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:57,727 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:57,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 103 transitions, 516 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:57,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:57,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:57,941 INFO L130 PetriNetUnfolder]: 36/231 cut-off events. [2022-09-20 20:56:57,941 INFO L131 PetriNetUnfolder]: For 737/738 co-relation queries the response was YES. [2022-09-20 20:56:57,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 231 events. 36/231 cut-off events. For 737/738 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 758 event pairs, 6 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 868. Up to 31 conditions per place. [2022-09-20 20:56:57,942 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 39 selfloop transitions, 21 changer transitions 32/147 dead transitions. [2022-09-20 20:56:57,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 147 transitions, 1108 flow [2022-09-20 20:56:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:56:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:56:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1406 transitions. [2022-09-20 20:56:57,944 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6563958916900093 [2022-09-20 20:56:57,944 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1406 transitions. [2022-09-20 20:56:57,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1406 transitions. [2022-09-20 20:56:57,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:57,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1406 transitions. [2022-09-20 20:56:57,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 66.95238095238095) internal successors, (1406), 21 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,947 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,947 INFO L175 Difference]: Start difference. First operand has 166 places, 103 transitions, 516 flow. Second operand 21 states and 1406 transitions. [2022-09-20 20:56:57,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 147 transitions, 1108 flow [2022-09-20 20:56:57,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 147 transitions, 966 flow, removed 65 selfloop flow, removed 11 redundant places. [2022-09-20 20:56:57,951 INFO L231 Difference]: Finished difference. Result has 175 places, 105 transitions, 581 flow [2022-09-20 20:56:57,951 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=581, PETRI_PLACES=175, PETRI_TRANSITIONS=105} [2022-09-20 20:56:57,952 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 84 predicate places. [2022-09-20 20:56:57,952 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 105 transitions, 581 flow [2022-09-20 20:56:57,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:57,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:57,952 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] [2022-09-20 20:56:57,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-09-20 20:56:57,952 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash 761649578, now seen corresponding path program 15 times [2022-09-20 20:56:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:57,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593510637] [2022-09-20 20:56:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:57,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:58,018 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 20:56:58,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:58,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593510637] [2022-09-20 20:56:58,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593510637] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:58,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:58,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:58,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915627732] [2022-09-20 20:56:58,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:58,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:58,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:58,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:58,020 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:58,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 105 transitions, 581 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:58,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:58,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:58,224 INFO L130 PetriNetUnfolder]: 33/236 cut-off events. [2022-09-20 20:56:58,224 INFO L131 PetriNetUnfolder]: For 974/975 co-relation queries the response was YES. [2022-09-20 20:56:58,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 236 events. 33/236 cut-off events. For 974/975 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 801 event pairs, 3 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 907. Up to 36 conditions per place. [2022-09-20 20:56:58,226 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 39 selfloop transitions, 22 changer transitions 29/145 dead transitions. [2022-09-20 20:56:58,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 145 transitions, 1121 flow [2022-09-20 20:56:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 20:56:58,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 20:56:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1083 transitions. [2022-09-20 20:56:58,228 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6636029411764706 [2022-09-20 20:56:58,229 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1083 transitions. [2022-09-20 20:56:58,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1083 transitions. [2022-09-20 20:56:58,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:58,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1083 transitions. [2022-09-20 20:56:58,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.6875) internal successors, (1083), 16 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,231 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,231 INFO L175 Difference]: Start difference. First operand has 175 places, 105 transitions, 581 flow. Second operand 16 states and 1083 transitions. [2022-09-20 20:56:58,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 145 transitions, 1121 flow [2022-09-20 20:56:58,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 145 transitions, 978 flow, removed 46 selfloop flow, removed 17 redundant places. [2022-09-20 20:56:58,236 INFO L231 Difference]: Finished difference. Result has 169 places, 110 transitions, 628 flow [2022-09-20 20:56:58,236 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=628, PETRI_PLACES=169, PETRI_TRANSITIONS=110} [2022-09-20 20:56:58,237 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 78 predicate places. [2022-09-20 20:56:58,237 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 110 transitions, 628 flow [2022-09-20 20:56:58,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:58,237 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] [2022-09-20 20:56:58,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-09-20 20:56:58,237 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:58,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:58,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1632435518, now seen corresponding path program 16 times [2022-09-20 20:56:58,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:58,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134382987] [2022-09-20 20:56:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:58,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:58,308 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 20:56:58,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:58,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134382987] [2022-09-20 20:56:58,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134382987] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:58,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:58,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:58,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25660922] [2022-09-20 20:56:58,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:58,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:58,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:58,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:58,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:58,311 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:58,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 110 transitions, 628 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:58,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:58,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:58,497 INFO L130 PetriNetUnfolder]: 24/202 cut-off events. [2022-09-20 20:56:58,497 INFO L131 PetriNetUnfolder]: For 635/636 co-relation queries the response was YES. [2022-09-20 20:56:58,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 202 events. 24/202 cut-off events. For 635/636 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 581 event pairs, 3 based on Foata normal form. 1/202 useless extension candidates. Maximal degree in co-relation 728. Up to 30 conditions per place. [2022-09-20 20:56:58,499 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 35 selfloop transitions, 10 changer transitions 34/134 dead transitions. [2022-09-20 20:56:58,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 134 transitions, 945 flow [2022-09-20 20:56:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:56:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:56:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1205 transitions. [2022-09-20 20:56:58,501 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.656318082788671 [2022-09-20 20:56:58,501 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1205 transitions. [2022-09-20 20:56:58,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1205 transitions. [2022-09-20 20:56:58,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:58,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1205 transitions. [2022-09-20 20:56:58,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.94444444444444) internal successors, (1205), 18 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,504 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,504 INFO L175 Difference]: Start difference. First operand has 169 places, 110 transitions, 628 flow. Second operand 18 states and 1205 transitions. [2022-09-20 20:56:58,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 134 transitions, 945 flow [2022-09-20 20:56:58,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 134 transitions, 841 flow, removed 30 selfloop flow, removed 10 redundant places. [2022-09-20 20:56:58,508 INFO L231 Difference]: Finished difference. Result has 176 places, 95 transitions, 428 flow [2022-09-20 20:56:58,508 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=428, PETRI_PLACES=176, PETRI_TRANSITIONS=95} [2022-09-20 20:56:58,509 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 85 predicate places. [2022-09-20 20:56:58,509 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 95 transitions, 428 flow [2022-09-20 20:56:58,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:58,509 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] [2022-09-20 20:56:58,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-09-20 20:56:58,509 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:58,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1459226864, now seen corresponding path program 17 times [2022-09-20 20:56:58,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:58,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84017127] [2022-09-20 20:56:58,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:58,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:58,577 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 20:56:58,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:58,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84017127] [2022-09-20 20:56:58,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84017127] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:58,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:58,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:58,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751699866] [2022-09-20 20:56:58,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:58,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:58,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:58,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:58,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:58,579 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:58,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 95 transitions, 428 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:58,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:58,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:58,777 INFO L130 PetriNetUnfolder]: 29/211 cut-off events. [2022-09-20 20:56:58,777 INFO L131 PetriNetUnfolder]: For 705/706 co-relation queries the response was YES. [2022-09-20 20:56:58,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 211 events. 29/211 cut-off events. For 705/706 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 627 event pairs, 4 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 756. Up to 30 conditions per place. [2022-09-20 20:56:58,779 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 20 changer transitions 27/135 dead transitions. [2022-09-20 20:56:58,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 135 transitions, 948 flow [2022-09-20 20:56:58,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:56:58,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:56:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1210 transitions. [2022-09-20 20:56:58,780 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.659041394335512 [2022-09-20 20:56:58,781 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1210 transitions. [2022-09-20 20:56:58,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1210 transitions. [2022-09-20 20:56:58,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:58,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1210 transitions. [2022-09-20 20:56:58,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.22222222222223) internal successors, (1210), 18 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,810 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,810 INFO L175 Difference]: Start difference. First operand has 176 places, 95 transitions, 428 flow. Second operand 18 states and 1210 transitions. [2022-09-20 20:56:58,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 135 transitions, 948 flow [2022-09-20 20:56:58,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 135 transitions, 802 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-09-20 20:56:58,814 INFO L231 Difference]: Finished difference. Result has 161 places, 104 transitions, 541 flow [2022-09-20 20:56:58,814 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=541, PETRI_PLACES=161, PETRI_TRANSITIONS=104} [2022-09-20 20:56:58,814 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 70 predicate places. [2022-09-20 20:56:58,814 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 104 transitions, 541 flow [2022-09-20 20:56:58,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:58,815 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] [2022-09-20 20:56:58,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-09-20 20:56:58,815 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:58,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:58,815 INFO L85 PathProgramCache]: Analyzing trace with hash 901113930, now seen corresponding path program 18 times [2022-09-20 20:56:58,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:58,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717930805] [2022-09-20 20:56:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:58,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:58,890 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 20:56:58,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:58,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717930805] [2022-09-20 20:56:58,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717930805] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:58,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:58,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:58,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691170159] [2022-09-20 20:56:58,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:58,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:58,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:58,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:58,891 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:58,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 104 transitions, 541 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:58,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:58,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:58,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:59,087 INFO L130 PetriNetUnfolder]: 25/209 cut-off events. [2022-09-20 20:56:59,087 INFO L131 PetriNetUnfolder]: For 494/495 co-relation queries the response was YES. [2022-09-20 20:56:59,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 209 events. 25/209 cut-off events. For 494/495 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 618 event pairs, 0 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 709. Up to 30 conditions per place. [2022-09-20 20:56:59,089 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 34 selfloop transitions, 22 changer transitions 28/139 dead transitions. [2022-09-20 20:56:59,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 139 transitions, 995 flow [2022-09-20 20:56:59,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 20:56:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 20:56:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1146 transitions. [2022-09-20 20:56:59,090 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6608996539792388 [2022-09-20 20:56:59,090 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1146 transitions. [2022-09-20 20:56:59,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1146 transitions. [2022-09-20 20:56:59,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:59,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1146 transitions. [2022-09-20 20:56:59,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.41176470588235) internal successors, (1146), 17 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,092 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,092 INFO L175 Difference]: Start difference. First operand has 161 places, 104 transitions, 541 flow. Second operand 17 states and 1146 transitions. [2022-09-20 20:56:59,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 139 transitions, 995 flow [2022-09-20 20:56:59,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 139 transitions, 914 flow, removed 36 selfloop flow, removed 5 redundant places. [2022-09-20 20:56:59,096 INFO L231 Difference]: Finished difference. Result has 173 places, 108 transitions, 623 flow [2022-09-20 20:56:59,096 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=623, PETRI_PLACES=173, PETRI_TRANSITIONS=108} [2022-09-20 20:56:59,097 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 82 predicate places. [2022-09-20 20:56:59,097 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 108 transitions, 623 flow [2022-09-20 20:56:59,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:59,097 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] [2022-09-20 20:56:59,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-09-20 20:56:59,097 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:59,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1360922724, now seen corresponding path program 19 times [2022-09-20 20:56:59,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:59,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093162285] [2022-09-20 20:56:59,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:59,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:59,173 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 20:56:59,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:59,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093162285] [2022-09-20 20:56:59,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093162285] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:59,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:59,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:59,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230596156] [2022-09-20 20:56:59,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:59,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:59,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:59,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:59,175 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:59,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 108 transitions, 623 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:59,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:59,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:59,328 INFO L130 PetriNetUnfolder]: 19/194 cut-off events. [2022-09-20 20:56:59,328 INFO L131 PetriNetUnfolder]: For 449/450 co-relation queries the response was YES. [2022-09-20 20:56:59,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 194 events. 19/194 cut-off events. For 449/450 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 535 event pairs, 0 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 661. Up to 30 conditions per place. [2022-09-20 20:56:59,329 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 12 changer transitions 33/133 dead transitions. [2022-09-20 20:56:59,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 133 transitions, 964 flow [2022-09-20 20:56:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 20:56:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 20:56:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1141 transitions. [2022-09-20 20:56:59,344 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6580161476355249 [2022-09-20 20:56:59,344 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1141 transitions. [2022-09-20 20:56:59,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1141 transitions. [2022-09-20 20:56:59,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:59,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1141 transitions. [2022-09-20 20:56:59,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.11764705882354) internal successors, (1141), 17 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,347 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,347 INFO L175 Difference]: Start difference. First operand has 173 places, 108 transitions, 623 flow. Second operand 17 states and 1141 transitions. [2022-09-20 20:56:59,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 133 transitions, 964 flow [2022-09-20 20:56:59,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 133 transitions, 863 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-09-20 20:56:59,353 INFO L231 Difference]: Finished difference. Result has 179 places, 99 transitions, 478 flow [2022-09-20 20:56:59,353 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=478, PETRI_PLACES=179, PETRI_TRANSITIONS=99} [2022-09-20 20:56:59,353 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-09-20 20:56:59,353 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 99 transitions, 478 flow [2022-09-20 20:56:59,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:59,354 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] [2022-09-20 20:56:59,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-09-20 20:56:59,354 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:56:59,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:59,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1378187606, now seen corresponding path program 20 times [2022-09-20 20:56:59,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:59,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632370645] [2022-09-20 20:56:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:59,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:59,429 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 20:56:59,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:59,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632370645] [2022-09-20 20:56:59,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632370645] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:59,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:59,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:56:59,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700455055] [2022-09-20 20:56:59,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:59,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:56:59,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:56:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:56:59,431 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 20:56:59,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 99 transitions, 478 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:59,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 20:56:59,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:59,577 INFO L130 PetriNetUnfolder]: 11/122 cut-off events. [2022-09-20 20:56:59,578 INFO L131 PetriNetUnfolder]: For 248/249 co-relation queries the response was YES. [2022-09-20 20:56:59,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 122 events. 11/122 cut-off events. For 248/249 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 210 event pairs, 1 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 387. Up to 12 conditions per place. [2022-09-20 20:56:59,579 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 0 selfloop transitions, 0 changer transitions 94/94 dead transitions. [2022-09-20 20:56:59,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 94 transitions, 590 flow [2022-09-20 20:56:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:56:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:56:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1178 transitions. [2022-09-20 20:56:59,580 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6416122004357299 [2022-09-20 20:56:59,580 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1178 transitions. [2022-09-20 20:56:59,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1178 transitions. [2022-09-20 20:56:59,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:59,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1178 transitions. [2022-09-20 20:56:59,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 65.44444444444444) internal successors, (1178), 18 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,582 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,582 INFO L175 Difference]: Start difference. First operand has 179 places, 99 transitions, 478 flow. Second operand 18 states and 1178 transitions. [2022-09-20 20:56:59,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 94 transitions, 590 flow [2022-09-20 20:56:59,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 94 transitions, 480 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-09-20 20:56:59,584 INFO L231 Difference]: Finished difference. Result has 148 places, 0 transitions, 0 flow [2022-09-20 20:56:59,585 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=148, PETRI_TRANSITIONS=0} [2022-09-20 20:56:59,585 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 57 predicate places. [2022-09-20 20:56:59,585 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 0 transitions, 0 flow [2022-09-20 20:56:59,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:59,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-09-20 20:56:59,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-09-20 20:56:59,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-09-20 20:56:59,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-09-20 20:56:59,590 INFO L444 BasicCegarLoop]: Path program histogram: [20, 20, 2, 2, 1, 1, 1] [2022-09-20 20:56:59,592 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 20:56:59,592 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 20:56:59,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 08:56:59 BasicIcfg [2022-09-20 20:56:59,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 20:56:59,595 INFO L158 Benchmark]: Toolchain (without parser) took 15339.46ms. Allocated memory was 203.4MB in the beginning and 508.6MB in the end (delta: 305.1MB). Free memory was 145.5MB in the beginning and 318.0MB in the end (delta: -172.5MB). Peak memory consumption was 132.9MB. Max. memory is 8.0GB. [2022-09-20 20:56:59,595 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 203.4MB. Free memory is still 162.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 20:56:59,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.72ms. Allocated memory was 203.4MB in the beginning and 284.2MB in the end (delta: 80.7MB). Free memory was 145.3MB in the beginning and 254.6MB in the end (delta: -109.3MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. [2022-09-20 20:56:59,596 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.96ms. Allocated memory is still 284.2MB. Free memory was 254.6MB in the beginning and 252.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 20:56:59,596 INFO L158 Benchmark]: Boogie Preprocessor took 12.98ms. Allocated memory is still 284.2MB. Free memory was 252.8MB in the beginning and 251.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 20:56:59,596 INFO L158 Benchmark]: RCFGBuilder took 387.01ms. Allocated memory is still 284.2MB. Free memory was 251.7MB in the beginning and 240.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-09-20 20:56:59,596 INFO L158 Benchmark]: TraceAbstraction took 14724.47ms. Allocated memory was 284.2MB in the beginning and 508.6MB in the end (delta: 224.4MB). Free memory was 239.5MB in the beginning and 318.0MB in the end (delta: -78.4MB). Peak memory consumption was 146.9MB. Max. memory is 8.0GB. [2022-09-20 20:56:59,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 203.4MB. Free memory is still 162.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 182.72ms. Allocated memory was 203.4MB in the beginning and 284.2MB in the end (delta: 80.7MB). Free memory was 145.3MB in the beginning and 254.6MB in the end (delta: -109.3MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.96ms. Allocated memory is still 284.2MB. Free memory was 254.6MB in the beginning and 252.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.98ms. Allocated memory is still 284.2MB. Free memory was 252.8MB in the beginning and 251.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 387.01ms. Allocated memory is still 284.2MB. Free memory was 251.7MB in the beginning and 240.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 14724.47ms. Allocated memory was 284.2MB in the beginning and 508.6MB in the end (delta: 224.4MB). Free memory was 239.5MB in the beginning and 318.0MB in the end (delta: -78.4MB). Peak memory consumption was 146.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 69]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 122 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.6s, OverallIterations: 47, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1853 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1853 mSDsluCounter, 8802 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8645 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7419 IncrementalHoareTripleChecker+Invalid, 7448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 1737 mSDtfsCounter, 7419 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1016 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 871 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3614 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1071occurred in iteration=14, InterpolantAutomatonStates: 803, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 3611 NumberOfCodeBlocks, 3611 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3564 ConstructedInterpolants, 0 QuantifiedInterpolants, 14482 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-20 20:56:59,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...