/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-?-3902331-m [2022-09-20 22:54:01,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:54:01,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:54:01,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:54:01,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:54:01,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:54:01,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:54:01,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:54:01,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:54:01,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:54:01,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:54:01,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:54:01,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:54:01,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:54:01,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:54:01,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:54:01,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:54:01,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:54:01,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:54:01,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:54:01,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:54:01,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:54:01,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:54:01,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:54:01,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 22:54:01,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 22:54:01,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 22:54:01,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 22:54:01,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 22:54:01,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 22:54:01,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:54:01,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:54:01,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:54:01,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:54:01,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:54:01,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:54:01,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:54:01,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:54:01,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:54:01,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:54:01,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:54:01,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 22:54:01,380 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:54:01,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:54:01,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:54:01,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:54:01,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:54:01,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:54:01,382 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:54:01,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:54:01,382 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:54:01,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:54:01,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:54:01,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:54:01,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:54:01,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:54:01,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:54:01,384 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:54:01,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:54:01,384 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:54:01,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:54:01,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:54:01,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:54:01,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:54:01,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:54:01,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:54:01,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:54:01,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:54:01,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:54:01,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:54:01,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:54:01,387 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:54:01,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:54:01,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:54:01,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:54:01,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:54:01,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:54:01,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:54:01,671 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:54:01,672 INFO L432 ainManager$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 22:54:01,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9074ca00/53b75d0bee564d1690d6e163a07063c6/FLAG3d424320b [2022-09-20 22:54:02,094 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:54:02,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c [2022-09-20 22:54:02,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9074ca00/53b75d0bee564d1690d6e163a07063c6/FLAG3d424320b [2022-09-20 22:54:02,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9074ca00/53b75d0bee564d1690d6e163a07063c6 [2022-09-20 22:54:02,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:54:02,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:54:02,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:54:02,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:54:02,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:54:02,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:54:02" (1/1) ... [2022-09-20 22:54:02,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d52c88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02, skipping insertion in model container [2022-09-20 22:54:02,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:54:02" (1/1) ... [2022-09-20 22:54:02,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:54:02,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:54:02,368 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 22:54:02,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:54:02,380 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:54:02,413 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 22:54:02,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:54:02,426 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:54:02,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02 WrapperNode [2022-09-20 22:54:02,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:54:02,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:54:02,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:54:02,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:54:02,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02" (1/1) ... [2022-09-20 22:54:02,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02" (1/1) ... [2022-09-20 22:54:02,470 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-09-20 22:54:02,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:54:02,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:54:02,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:54:02,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:54:02,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02" (1/1) ... [2022-09-20 22:54:02,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02" (1/1) ... [2022-09-20 22:54:02,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02" (1/1) ... [2022-09-20 22:54:02,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02" (1/1) ... [2022-09-20 22:54:02,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02" (1/1) ... [2022-09-20 22:54:02,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02" (1/1) ... [2022-09-20 22:54:02,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02" (1/1) ... [2022-09-20 22:54:02,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:54:02,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:54:02,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:54:02,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:54:02,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02" (1/1) ... [2022-09-20 22:54:02,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:54:02,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:54:02,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 22:54:02,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 22:54:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:54:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 22:54:02,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 22:54:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 22:54:02,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 22:54:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:54:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:54:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:54:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:54:02,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:54:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 22:54:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:54:02,560 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 22:54:02,620 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:54:02,622 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:54:02,753 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:54:02,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:54:02,760 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 22:54:02,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:54:02 BoogieIcfgContainer [2022-09-20 22:54:02,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:54:02,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:54:02,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:54:02,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:54:02,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:54:02" (1/3) ... [2022-09-20 22:54:02,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d8b495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:54:02, skipping insertion in model container [2022-09-20 22:54:02,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:02" (2/3) ... [2022-09-20 22:54:02,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d8b495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:54:02, skipping insertion in model container [2022-09-20 22:54:02,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:54:02" (3/3) ... [2022-09-20 22:54:02,769 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2022-09-20 22:54:02,782 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:54:02,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 22:54:02,783 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:54:02,827 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 22:54:02,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 220 flow [2022-09-20 22:54:02,950 INFO L130 PetriNetUnfolder]: 7/100 cut-off events. [2022-09-20 22:54:02,950 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 22:54:02,963 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 22:54:02,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 220 flow [2022-09-20 22:54:02,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 194 flow [2022-09-20 22:54:02,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:54:02,983 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;@4e918c6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:54:02,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 22:54:03,009 INFO L130 PetriNetUnfolder]: 7/90 cut-off events. [2022-09-20 22:54:03,009 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 22:54:03,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:03,010 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 22:54:03,011 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 22:54:03,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:03,016 INFO L85 PathProgramCache]: Analyzing trace with hash 255615476, now seen corresponding path program 1 times [2022-09-20 22:54:03,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:03,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113308089] [2022-09-20 22:54:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:03,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:03,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:03,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113308089] [2022-09-20 22:54:03,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113308089] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:03,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:03,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:03,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28260139] [2022-09-20 22:54:03,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:03,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:03,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:03,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:03,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:03,514 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2022-09-20 22:54:03,517 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 22:54:03,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:03,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2022-09-20 22:54:03,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:03,797 INFO L130 PetriNetUnfolder]: 55/294 cut-off events. [2022-09-20 22:54:03,797 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-09-20 22:54:03,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 294 events. 55/294 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1126 event pairs, 11 based on Foata normal form. 9/287 useless extension candidates. Maximal degree in co-relation 265. Up to 44 conditions per place. [2022-09-20 22:54:03,805 INFO L137 encePairwiseOnDemand]: 86/102 looper letters, 52 selfloop transitions, 10 changer transitions 34/155 dead transitions. [2022-09-20 22:54:03,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 155 transitions, 541 flow [2022-09-20 22:54:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-20 22:54:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-20 22:54:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1141 transitions. [2022-09-20 22:54:03,827 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7457516339869281 [2022-09-20 22:54:03,827 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1141 transitions. [2022-09-20 22:54:03,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1141 transitions. [2022-09-20 22:54:03,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:03,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1141 transitions. [2022-09-20 22:54:03,836 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 22:54:03,844 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 22:54:03,845 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 22:54:03,846 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 194 flow. Second operand 15 states and 1141 transitions. [2022-09-20 22:54:03,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 155 transitions, 541 flow [2022-09-20 22:54:03,850 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 22:54:03,854 INFO L231 Difference]: Finished difference. Result has 111 places, 93 transitions, 253 flow [2022-09-20 22:54:03,856 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 22:54:03,859 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2022-09-20 22:54:03,859 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 253 flow [2022-09-20 22:54:03,860 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 22:54:03,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:03,860 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 22:54:03,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:54:03,861 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 22:54:03,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:03,861 INFO L85 PathProgramCache]: Analyzing trace with hash 341672719, now seen corresponding path program 1 times [2022-09-20 22:54:03,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:03,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346219896] [2022-09-20 22:54:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:03,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:03,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:03,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346219896] [2022-09-20 22:54:03,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346219896] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:03,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:03,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:54:03,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203554319] [2022-09-20 22:54:03,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:03,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:54:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:03,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:54:03,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:54:03,949 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-09-20 22:54:03,949 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 22:54:03,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:03,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-09-20 22:54:03,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:04,052 INFO L130 PetriNetUnfolder]: 41/290 cut-off events. [2022-09-20 22:54:04,052 INFO L131 PetriNetUnfolder]: For 115/120 co-relation queries the response was YES. [2022-09-20 22:54:04,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 290 events. 41/290 cut-off events. For 115/120 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1156 event pairs, 12 based on Foata normal form. 2/262 useless extension candidates. Maximal degree in co-relation 482. Up to 52 conditions per place. [2022-09-20 22:54:04,061 INFO L137 encePairwiseOnDemand]: 98/102 looper letters, 18 selfloop transitions, 2 changer transitions 1/98 dead transitions. [2022-09-20 22:54:04,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 98 transitions, 308 flow [2022-09-20 22:54:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:54:04,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:54:04,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2022-09-20 22:54:04,066 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8790849673202614 [2022-09-20 22:54:04,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2022-09-20 22:54:04,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2022-09-20 22:54:04,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:04,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2022-09-20 22:54:04,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:04,068 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 22:54:04,068 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 22:54:04,069 INFO L175 Difference]: Start difference. First operand has 111 places, 93 transitions, 253 flow. Second operand 3 states and 269 transitions. [2022-09-20 22:54:04,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 98 transitions, 308 flow [2022-09-20 22:54:04,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 297 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-20 22:54:04,075 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 262 flow [2022-09-20 22:54:04,075 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=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2022-09-20 22:54:04,078 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 9 predicate places. [2022-09-20 22:54:04,078 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 262 flow [2022-09-20 22:54:04,078 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 22:54:04,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:04,078 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 22:54:04,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:54:04,079 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 22:54:04,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:04,082 INFO L85 PathProgramCache]: Analyzing trace with hash 601540433, now seen corresponding path program 1 times [2022-09-20 22:54:04,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:04,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105490330] [2022-09-20 22:54:04,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:04,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:04,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:04,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105490330] [2022-09-20 22:54:04,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105490330] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:04,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:04,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:54:04,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502684704] [2022-09-20 22:54:04,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:04,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:54:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:04,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:54:04,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:54:04,202 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-09-20 22:54:04,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:04,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:04,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-09-20 22:54:04,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:04,264 INFO L130 PetriNetUnfolder]: 28/218 cut-off events. [2022-09-20 22:54:04,264 INFO L131 PetriNetUnfolder]: For 59/60 co-relation queries the response was YES. [2022-09-20 22:54:04,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 218 events. 28/218 cut-off events. For 59/60 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 706 event pairs, 16 based on Foata normal form. 3/202 useless extension candidates. Maximal degree in co-relation 313. Up to 46 conditions per place. [2022-09-20 22:54:04,266 INFO L137 encePairwiseOnDemand]: 98/102 looper letters, 16 selfloop transitions, 0 changer transitions 13/96 dead transitions. [2022-09-20 22:54:04,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 307 flow [2022-09-20 22:54:04,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:54:04,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:54:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2022-09-20 22:54:04,268 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8790849673202614 [2022-09-20 22:54:04,268 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2022-09-20 22:54:04,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2022-09-20 22:54:04,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:04,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2022-09-20 22:54:04,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:04,270 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 22:54:04,270 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 22:54:04,271 INFO L175 Difference]: Start difference. First operand has 100 places, 95 transitions, 262 flow. Second operand 3 states and 269 transitions. [2022-09-20 22:54:04,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 307 flow [2022-09-20 22:54:04,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 300 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:54:04,280 INFO L231 Difference]: Finished difference. Result has 101 places, 83 transitions, 202 flow [2022-09-20 22:54:04,281 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=101, PETRI_TRANSITIONS=83} [2022-09-20 22:54:04,283 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 10 predicate places. [2022-09-20 22:54:04,283 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 83 transitions, 202 flow [2022-09-20 22:54:04,283 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 22:54:04,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:04,284 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 22:54:04,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:54:04,284 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 22:54:04,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:04,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1502259978, now seen corresponding path program 1 times [2022-09-20 22:54:04,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:04,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657343465] [2022-09-20 22:54:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:04,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:04,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:04,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657343465] [2022-09-20 22:54:04,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657343465] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:04,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:04,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:54:04,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034710237] [2022-09-20 22:54:04,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:04,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:54:04,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:04,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:54:04,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:54:04,449 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-09-20 22:54:04,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 83 transitions, 202 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 22:54:04,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:04,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-09-20 22:54:04,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:04,520 INFO L130 PetriNetUnfolder]: 28/291 cut-off events. [2022-09-20 22:54:04,521 INFO L131 PetriNetUnfolder]: For 98/101 co-relation queries the response was YES. [2022-09-20 22:54:04,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 291 events. 28/291 cut-off events. For 98/101 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1165 event pairs, 12 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 464. Up to 29 conditions per place. [2022-09-20 22:54:04,523 INFO L137 encePairwiseOnDemand]: 96/102 looper letters, 22 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2022-09-20 22:54:04,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 95 transitions, 292 flow [2022-09-20 22:54:04,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:54:04,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:54:04,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-09-20 22:54:04,525 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8627450980392157 [2022-09-20 22:54:04,525 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-09-20 22:54:04,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-09-20 22:54:04,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:04,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-09-20 22:54:04,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:04,529 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 22:54:04,529 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 22:54:04,529 INFO L175 Difference]: Start difference. First operand has 101 places, 83 transitions, 202 flow. Second operand 5 states and 440 transitions. [2022-09-20 22:54:04,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 95 transitions, 292 flow [2022-09-20 22:54:04,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 278 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-09-20 22:54:04,532 INFO L231 Difference]: Finished difference. Result has 95 places, 87 transitions, 230 flow [2022-09-20 22:54:04,533 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=95, PETRI_TRANSITIONS=87} [2022-09-20 22:54:04,534 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 4 predicate places. [2022-09-20 22:54:04,534 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 87 transitions, 230 flow [2022-09-20 22:54:04,534 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 22:54:04,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:04,535 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 22:54:04,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:54:04,538 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 22:54:04,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1194239646, now seen corresponding path program 1 times [2022-09-20 22:54:04,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:04,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449004660] [2022-09-20 22:54:04,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:04,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:04,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:04,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449004660] [2022-09-20 22:54:04,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449004660] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:04,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:04,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:04,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64119230] [2022-09-20 22:54:04,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:04,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:04,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:04,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:04,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:04,763 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:04,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 87 transitions, 230 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 22:54:04,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:04,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:04,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:05,180 INFO L130 PetriNetUnfolder]: 127/503 cut-off events. [2022-09-20 22:54:05,181 INFO L131 PetriNetUnfolder]: For 92/94 co-relation queries the response was YES. [2022-09-20 22:54:05,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 503 events. 127/503 cut-off events. For 92/94 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2645 event pairs, 36 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 980. Up to 136 conditions per place. [2022-09-20 22:54:05,184 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 75 selfloop transitions, 5 changer transitions 34/171 dead transitions. [2022-09-20 22:54:05,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 171 transitions, 685 flow [2022-09-20 22:54:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-20 22:54:05,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-20 22:54:05,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1627 transitions. [2022-09-20 22:54:05,189 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6646241830065359 [2022-09-20 22:54:05,189 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1627 transitions. [2022-09-20 22:54:05,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1627 transitions. [2022-09-20 22:54:05,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:05,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1627 transitions. [2022-09-20 22:54:05,194 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 22:54:05,199 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 22:54:05,201 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 22:54:05,201 INFO L175 Difference]: Start difference. First operand has 95 places, 87 transitions, 230 flow. Second operand 24 states and 1627 transitions. [2022-09-20 22:54:05,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 171 transitions, 685 flow [2022-09-20 22:54:05,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 171 transitions, 681 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-09-20 22:54:05,207 INFO L231 Difference]: Finished difference. Result has 139 places, 91 transitions, 321 flow [2022-09-20 22:54:05,208 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=321, PETRI_PLACES=139, PETRI_TRANSITIONS=91} [2022-09-20 22:54:05,210 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 48 predicate places. [2022-09-20 22:54:05,210 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 91 transitions, 321 flow [2022-09-20 22:54:05,210 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 22:54:05,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:05,211 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 22:54:05,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:54:05,211 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 22:54:05,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:05,212 INFO L85 PathProgramCache]: Analyzing trace with hash -793329184, now seen corresponding path program 2 times [2022-09-20 22:54:05,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:05,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79323386] [2022-09-20 22:54:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:05,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:05,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:05,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79323386] [2022-09-20 22:54:05,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79323386] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:05,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:05,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 22:54:05,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412880668] [2022-09-20 22:54:05,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:05,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 22:54:05,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:05,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 22:54:05,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-20 22:54:05,297 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-09-20 22:54:05,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 91 transitions, 321 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 22:54:05,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:05,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-09-20 22:54:05,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:05,363 INFO L130 PetriNetUnfolder]: 30/294 cut-off events. [2022-09-20 22:54:05,364 INFO L131 PetriNetUnfolder]: For 524/528 co-relation queries the response was YES. [2022-09-20 22:54:05,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 294 events. 30/294 cut-off events. For 524/528 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1219 event pairs, 19 based on Foata normal form. 5/293 useless extension candidates. Maximal degree in co-relation 727. Up to 28 conditions per place. [2022-09-20 22:54:05,368 INFO L137 encePairwiseOnDemand]: 97/102 looper letters, 25 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2022-09-20 22:54:05,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 100 transitions, 415 flow [2022-09-20 22:54:05,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 22:54:05,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 22:54:05,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2022-09-20 22:54:05,370 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2022-09-20 22:54:05,370 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2022-09-20 22:54:05,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2022-09-20 22:54:05,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:05,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2022-09-20 22:54:05,371 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 22:54:05,373 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 22:54:05,373 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 22:54:05,373 INFO L175 Difference]: Start difference. First operand has 139 places, 91 transitions, 321 flow. Second operand 4 states and 354 transitions. [2022-09-20 22:54:05,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 100 transitions, 415 flow [2022-09-20 22:54:05,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 100 transitions, 392 flow, removed 11 selfloop flow, removed 11 redundant places. [2022-09-20 22:54:05,379 INFO L231 Difference]: Finished difference. Result has 116 places, 93 transitions, 326 flow [2022-09-20 22:54:05,380 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=116, PETRI_TRANSITIONS=93} [2022-09-20 22:54:05,382 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 25 predicate places. [2022-09-20 22:54:05,382 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 93 transitions, 326 flow [2022-09-20 22:54:05,382 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 22:54:05,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:05,383 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 22:54:05,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:54:05,383 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 22:54:05,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:05,383 INFO L85 PathProgramCache]: Analyzing trace with hash -445215038, now seen corresponding path program 1 times [2022-09-20 22:54:05,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:05,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823964532] [2022-09-20 22:54:05,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:05,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:05,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:05,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823964532] [2022-09-20 22:54:05,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823964532] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:05,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:05,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:05,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695406358] [2022-09-20 22:54:05,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:05,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:05,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:05,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:05,532 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:05,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 93 transitions, 326 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 22:54:05,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:05,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:05,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:05,864 INFO L130 PetriNetUnfolder]: 111/484 cut-off events. [2022-09-20 22:54:05,865 INFO L131 PetriNetUnfolder]: For 719/726 co-relation queries the response was YES. [2022-09-20 22:54:05,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 484 events. 111/484 cut-off events. For 719/726 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2521 event pairs, 61 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 1395. Up to 193 conditions per place. [2022-09-20 22:54:05,869 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 67 selfloop transitions, 5 changer transitions 41/172 dead transitions. [2022-09-20 22:54:05,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 172 transitions, 967 flow [2022-09-20 22:54:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-20 22:54:05,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-20 22:54:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1626 transitions. [2022-09-20 22:54:05,873 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6642156862745098 [2022-09-20 22:54:05,873 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1626 transitions. [2022-09-20 22:54:05,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1626 transitions. [2022-09-20 22:54:05,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:05,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1626 transitions. [2022-09-20 22:54:05,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.75) internal successors, (1626), 24 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:05,883 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 22:54:05,884 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 22:54:05,884 INFO L175 Difference]: Start difference. First operand has 116 places, 93 transitions, 326 flow. Second operand 24 states and 1626 transitions. [2022-09-20 22:54:05,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 172 transitions, 967 flow [2022-09-20 22:54:05,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 172 transitions, 961 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-09-20 22:54:05,892 INFO L231 Difference]: Finished difference. Result has 156 places, 93 transitions, 371 flow [2022-09-20 22:54:05,892 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=371, PETRI_PLACES=156, PETRI_TRANSITIONS=93} [2022-09-20 22:54:05,892 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 65 predicate places. [2022-09-20 22:54:05,893 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 93 transitions, 371 flow [2022-09-20 22:54:05,893 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 22:54:05,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:05,893 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 22:54:05,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:54:05,894 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 22:54:05,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:05,894 INFO L85 PathProgramCache]: Analyzing trace with hash -327031736, now seen corresponding path program 1 times [2022-09-20 22:54:05,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:05,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140874211] [2022-09-20 22:54:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:05,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:05,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:05,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140874211] [2022-09-20 22:54:05,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140874211] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:05,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:05,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:54:05,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320591170] [2022-09-20 22:54:05,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:05,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:54:05,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:05,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:54:05,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:54:05,970 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-09-20 22:54:05,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 93 transitions, 371 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 22:54:05,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:05,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-09-20 22:54:05,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:06,050 INFO L130 PetriNetUnfolder]: 27/291 cut-off events. [2022-09-20 22:54:06,050 INFO L131 PetriNetUnfolder]: For 817/818 co-relation queries the response was YES. [2022-09-20 22:54:06,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 291 events. 27/291 cut-off events. For 817/818 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1214 event pairs, 18 based on Foata normal form. 2/286 useless extension candidates. Maximal degree in co-relation 828. Up to 28 conditions per place. [2022-09-20 22:54:06,053 INFO L137 encePairwiseOnDemand]: 95/102 looper letters, 21 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2022-09-20 22:54:06,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 100 transitions, 455 flow [2022-09-20 22:54:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:54:06,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:54:06,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2022-09-20 22:54:06,055 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8549019607843137 [2022-09-20 22:54:06,055 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2022-09-20 22:54:06,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2022-09-20 22:54:06,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:06,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2022-09-20 22:54:06,057 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 22:54:06,058 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 22:54:06,058 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 22:54:06,058 INFO L175 Difference]: Start difference. First operand has 156 places, 93 transitions, 371 flow. Second operand 5 states and 436 transitions. [2022-09-20 22:54:06,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 100 transitions, 455 flow [2022-09-20 22:54:06,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 100 transitions, 396 flow, removed 19 selfloop flow, removed 22 redundant places. [2022-09-20 22:54:06,064 INFO L231 Difference]: Finished difference. Result has 123 places, 95 transitions, 352 flow [2022-09-20 22:54:06,064 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=352, PETRI_PLACES=123, PETRI_TRANSITIONS=95} [2022-09-20 22:54:06,065 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 32 predicate places. [2022-09-20 22:54:06,065 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 95 transitions, 352 flow [2022-09-20 22:54:06,065 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 22:54:06,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:06,065 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 22:54:06,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:54:06,066 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 22:54:06,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:06,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2048059198, now seen corresponding path program 2 times [2022-09-20 22:54:06,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:06,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918311532] [2022-09-20 22:54:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:06,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:06,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:06,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918311532] [2022-09-20 22:54:06,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918311532] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:06,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:06,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 22:54:06,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866199603] [2022-09-20 22:54:06,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:06,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 22:54:06,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:06,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 22:54:06,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-20 22:54:06,108 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-09-20 22:54:06,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 95 transitions, 352 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 22:54:06,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:06,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-09-20 22:54:06,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:06,161 INFO L130 PetriNetUnfolder]: 25/233 cut-off events. [2022-09-20 22:54:06,161 INFO L131 PetriNetUnfolder]: For 306/309 co-relation queries the response was YES. [2022-09-20 22:54:06,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 233 events. 25/233 cut-off events. For 306/309 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 853 event pairs, 16 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 554. Up to 26 conditions per place. [2022-09-20 22:54:06,163 INFO L137 encePairwiseOnDemand]: 94/102 looper letters, 22 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2022-09-20 22:54:06,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 100 transitions, 426 flow [2022-09-20 22:54:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 22:54:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 22:54:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2022-09-20 22:54:06,165 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8651960784313726 [2022-09-20 22:54:06,165 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2022-09-20 22:54:06,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2022-09-20 22:54:06,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:06,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2022-09-20 22:54:06,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:06,167 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 22:54:06,167 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 22:54:06,167 INFO L175 Difference]: Start difference. First operand has 123 places, 95 transitions, 352 flow. Second operand 4 states and 353 transitions. [2022-09-20 22:54:06,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 100 transitions, 426 flow [2022-09-20 22:54:06,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 100 transitions, 416 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-20 22:54:06,172 INFO L231 Difference]: Finished difference. Result has 125 places, 95 transitions, 362 flow [2022-09-20 22:54:06,172 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=125, PETRI_TRANSITIONS=95} [2022-09-20 22:54:06,173 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 34 predicate places. [2022-09-20 22:54:06,173 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 95 transitions, 362 flow [2022-09-20 22:54:06,173 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 22:54:06,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:06,173 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 22:54:06,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 22:54:06,174 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 22:54:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash 2017511806, now seen corresponding path program 2 times [2022-09-20 22:54:06,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:06,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645359419] [2022-09-20 22:54:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:06,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:06,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:06,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:06,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645359419] [2022-09-20 22:54:06,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645359419] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:06,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:06,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:06,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058959083] [2022-09-20 22:54:06,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:06,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:06,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:06,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:06,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:06,276 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:06,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 95 transitions, 362 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 22:54:06,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:06,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:06,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:06,605 INFO L130 PetriNetUnfolder]: 76/370 cut-off events. [2022-09-20 22:54:06,605 INFO L131 PetriNetUnfolder]: For 497/503 co-relation queries the response was YES. [2022-09-20 22:54:06,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 370 events. 76/370 cut-off events. For 497/503 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1693 event pairs, 36 based on Foata normal form. 1/362 useless extension candidates. Maximal degree in co-relation 1033. Up to 121 conditions per place. [2022-09-20 22:54:06,608 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 70 selfloop transitions, 5 changer transitions 35/171 dead transitions. [2022-09-20 22:54:06,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 171 transitions, 892 flow [2022-09-20 22:54:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-20 22:54:06,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-20 22:54:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1619 transitions. [2022-09-20 22:54:06,613 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6613562091503268 [2022-09-20 22:54:06,613 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1619 transitions. [2022-09-20 22:54:06,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1619 transitions. [2022-09-20 22:54:06,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:06,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1619 transitions. [2022-09-20 22:54:06,618 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 22:54:06,622 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 22:54:06,622 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 22:54:06,623 INFO L175 Difference]: Start difference. First operand has 125 places, 95 transitions, 362 flow. Second operand 24 states and 1619 transitions. [2022-09-20 22:54:06,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 171 transitions, 892 flow [2022-09-20 22:54:06,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 171 transitions, 878 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 22:54:06,630 INFO L231 Difference]: Finished difference. Result has 167 places, 99 transitions, 457 flow [2022-09-20 22:54:06,630 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=122, 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=457, PETRI_PLACES=167, PETRI_TRANSITIONS=99} [2022-09-20 22:54:06,631 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 76 predicate places. [2022-09-20 22:54:06,631 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 99 transitions, 457 flow [2022-09-20 22:54:06,632 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 22:54:06,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:06,632 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 22:54:06,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 22:54:06,632 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 22:54:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:06,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1492195322, now seen corresponding path program 2 times [2022-09-20 22:54:06,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:06,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370159094] [2022-09-20 22:54:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:06,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:06,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:06,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:06,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370159094] [2022-09-20 22:54:06,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370159094] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:06,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:06,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:06,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622409146] [2022-09-20 22:54:06,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:06,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:06,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:06,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:06,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:06,738 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:06,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 99 transitions, 457 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 22:54:06,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:06,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:06,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:07,054 INFO L130 PetriNetUnfolder]: 92/442 cut-off events. [2022-09-20 22:54:07,054 INFO L131 PetriNetUnfolder]: For 2412/2418 co-relation queries the response was YES. [2022-09-20 22:54:07,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 442 events. 92/442 cut-off events. For 2412/2418 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2162 event pairs, 47 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1712. Up to 152 conditions per place. [2022-09-20 22:54:07,059 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 54 selfloop transitions, 12 changer transitions 32/159 dead transitions. [2022-09-20 22:54:07,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 159 transitions, 1268 flow [2022-09-20 22:54:07,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 22:54:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 22:54:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1355 transitions. [2022-09-20 22:54:07,063 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6642156862745098 [2022-09-20 22:54:07,063 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1355 transitions. [2022-09-20 22:54:07,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1355 transitions. [2022-09-20 22:54:07,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:07,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1355 transitions. [2022-09-20 22:54:07,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.75) internal successors, (1355), 20 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:07,075 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 22:54:07,076 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 22:54:07,076 INFO L175 Difference]: Start difference. First operand has 167 places, 99 transitions, 457 flow. Second operand 20 states and 1355 transitions. [2022-09-20 22:54:07,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 159 transitions, 1268 flow [2022-09-20 22:54:07,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 159 transitions, 1145 flow, removed 61 selfloop flow, removed 12 redundant places. [2022-09-20 22:54:07,092 INFO L231 Difference]: Finished difference. Result has 174 places, 109 transitions, 605 flow [2022-09-20 22:54:07,092 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=605, PETRI_PLACES=174, PETRI_TRANSITIONS=109} [2022-09-20 22:54:07,093 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 83 predicate places. [2022-09-20 22:54:07,093 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 109 transitions, 605 flow [2022-09-20 22:54:07,093 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 22:54:07,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:07,094 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 22:54:07,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 22:54:07,094 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 22:54:07,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:07,094 INFO L85 PathProgramCache]: Analyzing trace with hash -920975192, now seen corresponding path program 3 times [2022-09-20 22:54:07,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:07,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868893918] [2022-09-20 22:54:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:07,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:07,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:07,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868893918] [2022-09-20 22:54:07,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868893918] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:07,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:07,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:07,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320940493] [2022-09-20 22:54:07,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:07,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:07,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:07,225 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:07,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 109 transitions, 605 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 22:54:07,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:07,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:07,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:07,565 INFO L130 PetriNetUnfolder]: 108/486 cut-off events. [2022-09-20 22:54:07,565 INFO L131 PetriNetUnfolder]: For 2530/2539 co-relation queries the response was YES. [2022-09-20 22:54:07,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901 conditions, 486 events. 108/486 cut-off events. For 2530/2539 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2503 event pairs, 59 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 1845. Up to 194 conditions per place. [2022-09-20 22:54:07,570 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 64 selfloop transitions, 12 changer transitions 28/165 dead transitions. [2022-09-20 22:54:07,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 165 transitions, 1134 flow [2022-09-20 22:54:07,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 22:54:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 22:54:07,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1351 transitions. [2022-09-20 22:54:07,573 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6622549019607843 [2022-09-20 22:54:07,573 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1351 transitions. [2022-09-20 22:54:07,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1351 transitions. [2022-09-20 22:54:07,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:07,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1351 transitions. [2022-09-20 22:54:07,576 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 22:54:07,579 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 22:54:07,579 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 22:54:07,579 INFO L175 Difference]: Start difference. First operand has 174 places, 109 transitions, 605 flow. Second operand 20 states and 1351 transitions. [2022-09-20 22:54:07,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 165 transitions, 1134 flow [2022-09-20 22:54:07,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 165 transitions, 997 flow, removed 65 selfloop flow, removed 20 redundant places. [2022-09-20 22:54:07,594 INFO L231 Difference]: Finished difference. Result has 178 places, 119 transitions, 611 flow [2022-09-20 22:54:07,595 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=611, PETRI_PLACES=178, PETRI_TRANSITIONS=119} [2022-09-20 22:54:07,595 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 87 predicate places. [2022-09-20 22:54:07,595 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 119 transitions, 611 flow [2022-09-20 22:54:07,596 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 22:54:07,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:07,596 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 22:54:07,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 22:54:07,596 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 22:54:07,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:07,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1365855668, now seen corresponding path program 4 times [2022-09-20 22:54:07,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:07,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088777593] [2022-09-20 22:54:07,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:07,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:07,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:07,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088777593] [2022-09-20 22:54:07,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088777593] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:07,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:07,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:07,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41380529] [2022-09-20 22:54:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:07,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:07,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:07,698 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:07,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 119 transitions, 611 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 22:54:07,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:07,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:07,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:07,996 INFO L130 PetriNetUnfolder]: 103/469 cut-off events. [2022-09-20 22:54:07,996 INFO L131 PetriNetUnfolder]: For 1826/1836 co-relation queries the response was YES. [2022-09-20 22:54:07,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1890 conditions, 469 events. 103/469 cut-off events. For 1826/1836 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2426 event pairs, 56 based on Foata normal form. 1/461 useless extension candidates. Maximal degree in co-relation 1836. Up to 210 conditions per place. [2022-09-20 22:54:08,001 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 70 selfloop transitions, 14 changer transitions 25/170 dead transitions. [2022-09-20 22:54:08,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 170 transitions, 1342 flow [2022-09-20 22:54:08,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 22:54:08,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 22:54:08,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1347 transitions. [2022-09-20 22:54:08,004 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6602941176470588 [2022-09-20 22:54:08,004 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1347 transitions. [2022-09-20 22:54:08,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1347 transitions. [2022-09-20 22:54:08,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:08,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1347 transitions. [2022-09-20 22:54:08,007 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 22:54:08,010 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 22:54:08,010 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 22:54:08,011 INFO L175 Difference]: Start difference. First operand has 178 places, 119 transitions, 611 flow. Second operand 20 states and 1347 transitions. [2022-09-20 22:54:08,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 170 transitions, 1342 flow [2022-09-20 22:54:08,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 170 transitions, 1229 flow, removed 50 selfloop flow, removed 9 redundant places. [2022-09-20 22:54:08,023 INFO L231 Difference]: Finished difference. Result has 193 places, 129 transitions, 786 flow [2022-09-20 22:54:08,024 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=786, PETRI_PLACES=193, PETRI_TRANSITIONS=129} [2022-09-20 22:54:08,024 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 102 predicate places. [2022-09-20 22:54:08,024 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 129 transitions, 786 flow [2022-09-20 22:54:08,025 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 22:54:08,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:08,025 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 22:54:08,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-20 22:54:08,025 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 22:54:08,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:08,026 INFO L85 PathProgramCache]: Analyzing trace with hash 401301786, now seen corresponding path program 5 times [2022-09-20 22:54:08,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:08,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001727027] [2022-09-20 22:54:08,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:08,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:08,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:08,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001727027] [2022-09-20 22:54:08,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001727027] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:08,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:08,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:08,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909165603] [2022-09-20 22:54:08,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:08,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:08,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:08,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:08,129 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:08,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 129 transitions, 786 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 22:54:08,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:08,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:08,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:08,483 INFO L130 PetriNetUnfolder]: 117/524 cut-off events. [2022-09-20 22:54:08,484 INFO L131 PetriNetUnfolder]: For 3029/3048 co-relation queries the response was YES. [2022-09-20 22:54:08,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 524 events. 117/524 cut-off events. For 3029/3048 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2906 event pairs, 52 based on Foata normal form. 4/521 useless extension candidates. Maximal degree in co-relation 2291. Up to 212 conditions per place. [2022-09-20 22:54:08,490 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 77 selfloop transitions, 23 changer transitions 29/190 dead transitions. [2022-09-20 22:54:08,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 190 transitions, 1817 flow [2022-09-20 22:54:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 22:54:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 22:54:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1478 transitions. [2022-09-20 22:54:08,493 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6586452762923352 [2022-09-20 22:54:08,493 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1478 transitions. [2022-09-20 22:54:08,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1478 transitions. [2022-09-20 22:54:08,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:08,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1478 transitions. [2022-09-20 22:54:08,497 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 22:54:08,500 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 22:54:08,500 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 22:54:08,500 INFO L175 Difference]: Start difference. First operand has 193 places, 129 transitions, 786 flow. Second operand 22 states and 1478 transitions. [2022-09-20 22:54:08,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 190 transitions, 1817 flow [2022-09-20 22:54:08,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 190 transitions, 1576 flow, removed 112 selfloop flow, removed 10 redundant places. [2022-09-20 22:54:08,518 INFO L231 Difference]: Finished difference. Result has 207 places, 140 transitions, 929 flow [2022-09-20 22:54:08,518 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=929, PETRI_PLACES=207, PETRI_TRANSITIONS=140} [2022-09-20 22:54:08,519 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 116 predicate places. [2022-09-20 22:54:08,519 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 140 transitions, 929 flow [2022-09-20 22:54:08,520 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 22:54:08,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:08,520 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 22:54:08,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-20 22:54:08,520 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 22:54:08,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:08,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1439483134, now seen corresponding path program 6 times [2022-09-20 22:54:08,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:08,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177375308] [2022-09-20 22:54:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:08,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:08,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:08,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177375308] [2022-09-20 22:54:08,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177375308] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:08,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:08,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:08,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081009685] [2022-09-20 22:54:08,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:08,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:08,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:08,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:08,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:08,625 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:08,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 140 transitions, 929 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 22:54:08,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:08,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:08,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:08,909 INFO L130 PetriNetUnfolder]: 110/501 cut-off events. [2022-09-20 22:54:08,909 INFO L131 PetriNetUnfolder]: For 2640/2656 co-relation queries the response was YES. [2022-09-20 22:54:08,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2254 conditions, 501 events. 110/501 cut-off events. For 2640/2656 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2736 event pairs, 58 based on Foata normal form. 3/495 useless extension candidates. Maximal degree in co-relation 2185. Up to 222 conditions per place. [2022-09-20 22:54:08,916 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 70 selfloop transitions, 25 changer transitions 23/179 dead transitions. [2022-09-20 22:54:08,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 179 transitions, 1648 flow [2022-09-20 22:54:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:54:08,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:54:08,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1084 transitions. [2022-09-20 22:54:08,918 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6642156862745098 [2022-09-20 22:54:08,918 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1084 transitions. [2022-09-20 22:54:08,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1084 transitions. [2022-09-20 22:54:08,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:08,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1084 transitions. [2022-09-20 22:54:08,920 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 22:54:08,923 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 22:54:08,923 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 22:54:08,923 INFO L175 Difference]: Start difference. First operand has 207 places, 140 transitions, 929 flow. Second operand 16 states and 1084 transitions. [2022-09-20 22:54:08,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 179 transitions, 1648 flow [2022-09-20 22:54:08,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 179 transitions, 1520 flow, removed 58 selfloop flow, removed 13 redundant places. [2022-09-20 22:54:08,944 INFO L231 Difference]: Finished difference. Result has 204 places, 145 transitions, 1023 flow [2022-09-20 22:54:08,945 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1023, PETRI_PLACES=204, PETRI_TRANSITIONS=145} [2022-09-20 22:54:08,945 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 113 predicate places. [2022-09-20 22:54:08,945 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 145 transitions, 1023 flow [2022-09-20 22:54:08,945 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 22:54:08,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:08,946 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 22:54:08,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-20 22:54:08,946 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 22:54:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:08,946 INFO L85 PathProgramCache]: Analyzing trace with hash 684303434, now seen corresponding path program 7 times [2022-09-20 22:54:08,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:08,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186943505] [2022-09-20 22:54:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:08,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:09,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:09,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186943505] [2022-09-20 22:54:09,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186943505] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:09,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:09,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:09,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858620527] [2022-09-20 22:54:09,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:09,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:09,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:09,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:09,054 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:09,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 145 transitions, 1023 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 22:54:09,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:09,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:09,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:09,395 INFO L130 PetriNetUnfolder]: 110/514 cut-off events. [2022-09-20 22:54:09,396 INFO L131 PetriNetUnfolder]: For 2435/2459 co-relation queries the response was YES. [2022-09-20 22:54:09,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 514 events. 110/514 cut-off events. For 2435/2459 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2841 event pairs, 53 based on Foata normal form. 4/510 useless extension candidates. Maximal degree in co-relation 2158. Up to 208 conditions per place. [2022-09-20 22:54:09,402 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 80 selfloop transitions, 22 changer transitions 30/193 dead transitions. [2022-09-20 22:54:09,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 193 transitions, 1847 flow [2022-09-20 22:54:09,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 22:54:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 22:54:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1417 transitions. [2022-09-20 22:54:09,404 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.661531279178338 [2022-09-20 22:54:09,404 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1417 transitions. [2022-09-20 22:54:09,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1417 transitions. [2022-09-20 22:54:09,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:09,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1417 transitions. [2022-09-20 22:54:09,408 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 22:54:09,411 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 22:54:09,411 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 22:54:09,412 INFO L175 Difference]: Start difference. First operand has 204 places, 145 transitions, 1023 flow. Second operand 21 states and 1417 transitions. [2022-09-20 22:54:09,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 193 transitions, 1847 flow [2022-09-20 22:54:09,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 193 transitions, 1726 flow, removed 33 selfloop flow, removed 10 redundant places. [2022-09-20 22:54:09,430 INFO L231 Difference]: Finished difference. Result has 223 places, 149 transitions, 1100 flow [2022-09-20 22:54:09,431 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1100, PETRI_PLACES=223, PETRI_TRANSITIONS=149} [2022-09-20 22:54:09,431 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 132 predicate places. [2022-09-20 22:54:09,431 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 149 transitions, 1100 flow [2022-09-20 22:54:09,432 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 22:54:09,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:09,432 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 22:54:09,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-20 22:54:09,432 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 22:54:09,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:09,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1173894372, now seen corresponding path program 8 times [2022-09-20 22:54:09,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:09,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327290549] [2022-09-20 22:54:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:09,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:09,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:09,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327290549] [2022-09-20 22:54:09,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327290549] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:09,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:09,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:09,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256204101] [2022-09-20 22:54:09,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:09,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:09,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:09,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:09,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:09,559 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:09,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 149 transitions, 1100 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 22:54:09,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:09,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:09,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:09,804 INFO L130 PetriNetUnfolder]: 97/468 cut-off events. [2022-09-20 22:54:09,805 INFO L131 PetriNetUnfolder]: For 2598/2624 co-relation queries the response was YES. [2022-09-20 22:54:09,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080 conditions, 468 events. 97/468 cut-off events. For 2598/2624 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2478 event pairs, 51 based on Foata normal form. 6/466 useless extension candidates. Maximal degree in co-relation 2006. Up to 206 conditions per place. [2022-09-20 22:54:09,810 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 69 selfloop transitions, 14 changer transitions 31/175 dead transitions. [2022-09-20 22:54:09,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 175 transitions, 1613 flow [2022-09-20 22:54:09,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:54:09,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:54:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1209 transitions. [2022-09-20 22:54:09,816 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6584967320261438 [2022-09-20 22:54:09,816 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1209 transitions. [2022-09-20 22:54:09,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1209 transitions. [2022-09-20 22:54:09,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:09,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1209 transitions. [2022-09-20 22:54:09,819 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 22:54:09,822 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 22:54:09,822 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 22:54:09,823 INFO L175 Difference]: Start difference. First operand has 223 places, 149 transitions, 1100 flow. Second operand 18 states and 1209 transitions. [2022-09-20 22:54:09,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 175 transitions, 1613 flow [2022-09-20 22:54:09,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 175 transitions, 1493 flow, removed 45 selfloop flow, removed 14 redundant places. [2022-09-20 22:54:09,844 INFO L231 Difference]: Finished difference. Result has 220 places, 134 transitions, 871 flow [2022-09-20 22:54:09,844 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=871, PETRI_PLACES=220, PETRI_TRANSITIONS=134} [2022-09-20 22:54:09,844 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 129 predicate places. [2022-09-20 22:54:09,845 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 134 transitions, 871 flow [2022-09-20 22:54:09,845 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 22:54:09,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:09,845 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 22:54:09,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-20 22:54:09,845 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 22:54:09,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:09,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1175412022, now seen corresponding path program 9 times [2022-09-20 22:54:09,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:09,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816704885] [2022-09-20 22:54:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:09,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:09,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:09,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816704885] [2022-09-20 22:54:09,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816704885] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:09,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:09,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:09,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665180825] [2022-09-20 22:54:09,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:09,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:09,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:09,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:09,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:09,959 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:09,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 134 transitions, 871 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 22:54:09,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:09,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:09,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:10,236 INFO L130 PetriNetUnfolder]: 99/467 cut-off events. [2022-09-20 22:54:10,236 INFO L131 PetriNetUnfolder]: For 2367/2381 co-relation queries the response was YES. [2022-09-20 22:54:10,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 467 events. 99/467 cut-off events. For 2367/2381 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2429 event pairs, 56 based on Foata normal form. 1/460 useless extension candidates. Maximal degree in co-relation 1991. Up to 206 conditions per place. [2022-09-20 22:54:10,242 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 66 selfloop transitions, 22 changer transitions 21/170 dead transitions. [2022-09-20 22:54:10,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 170 transitions, 1538 flow [2022-09-20 22:54:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:54:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:54:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1215 transitions. [2022-09-20 22:54:10,250 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2022-09-20 22:54:10,250 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1215 transitions. [2022-09-20 22:54:10,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1215 transitions. [2022-09-20 22:54:10,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:10,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1215 transitions. [2022-09-20 22:54:10,257 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 22:54:10,259 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 22:54:10,259 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 22:54:10,259 INFO L175 Difference]: Start difference. First operand has 220 places, 134 transitions, 871 flow. Second operand 18 states and 1215 transitions. [2022-09-20 22:54:10,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 170 transitions, 1538 flow [2022-09-20 22:54:10,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 170 transitions, 1374 flow, removed 28 selfloop flow, removed 19 redundant places. [2022-09-20 22:54:10,276 INFO L231 Difference]: Finished difference. Result has 204 places, 143 transitions, 990 flow [2022-09-20 22:54:10,276 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=990, PETRI_PLACES=204, PETRI_TRANSITIONS=143} [2022-09-20 22:54:10,277 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 113 predicate places. [2022-09-20 22:54:10,277 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 143 transitions, 990 flow [2022-09-20 22:54:10,277 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 22:54:10,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:10,277 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 22:54:10,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-20 22:54:10,277 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 22:54:10,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:10,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1761379566, now seen corresponding path program 3 times [2022-09-20 22:54:10,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:10,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219767251] [2022-09-20 22:54:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:10,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:10,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219767251] [2022-09-20 22:54:10,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219767251] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:10,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:10,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:10,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105363928] [2022-09-20 22:54:10,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:10,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:10,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:10,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:10,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:10,395 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:10,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 143 transitions, 990 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 22:54:10,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:10,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:10,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:10,749 INFO L130 PetriNetUnfolder]: 100/478 cut-off events. [2022-09-20 22:54:10,749 INFO L131 PetriNetUnfolder]: For 1911/1933 co-relation queries the response was YES. [2022-09-20 22:54:10,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 478 events. 100/478 cut-off events. For 1911/1933 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2532 event pairs, 27 based on Foata normal form. 1/472 useless extension candidates. Maximal degree in co-relation 1929. Up to 161 conditions per place. [2022-09-20 22:54:10,755 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 117 selfloop transitions, 10 changer transitions 42/230 dead transitions. [2022-09-20 22:54:10,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 230 transitions, 1916 flow [2022-09-20 22:54:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-20 22:54:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-20 22:54:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1623 transitions. [2022-09-20 22:54:10,757 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6629901960784313 [2022-09-20 22:54:10,757 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1623 transitions. [2022-09-20 22:54:10,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1623 transitions. [2022-09-20 22:54:10,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:10,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1623 transitions. [2022-09-20 22:54:10,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.625) internal successors, (1623), 24 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:10,764 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 22:54:10,764 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 22:54:10,764 INFO L175 Difference]: Start difference. First operand has 204 places, 143 transitions, 990 flow. Second operand 24 states and 1623 transitions. [2022-09-20 22:54:10,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 230 transitions, 1916 flow [2022-09-20 22:54:10,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 230 transitions, 1850 flow, removed 29 selfloop flow, removed 5 redundant places. [2022-09-20 22:54:10,781 INFO L231 Difference]: Finished difference. Result has 231 places, 143 transitions, 1007 flow [2022-09-20 22:54:10,782 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1007, PETRI_PLACES=231, PETRI_TRANSITIONS=143} [2022-09-20 22:54:10,782 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 140 predicate places. [2022-09-20 22:54:10,782 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 143 transitions, 1007 flow [2022-09-20 22:54:10,783 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 22:54:10,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:10,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:10,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-20 22:54:10,783 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 22:54:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash -711762160, now seen corresponding path program 10 times [2022-09-20 22:54:10,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:10,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221834365] [2022-09-20 22:54:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:10,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:10,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:10,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221834365] [2022-09-20 22:54:10,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221834365] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:10,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:10,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:10,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12549631] [2022-09-20 22:54:10,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:10,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:10,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:10,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:10,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:10,899 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:10,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 143 transitions, 1007 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 22:54:10,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:10,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:10,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:11,228 INFO L130 PetriNetUnfolder]: 93/463 cut-off events. [2022-09-20 22:54:11,228 INFO L131 PetriNetUnfolder]: For 2263/2285 co-relation queries the response was YES. [2022-09-20 22:54:11,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080 conditions, 463 events. 93/463 cut-off events. For 2263/2285 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2450 event pairs, 50 based on Foata normal form. 3/458 useless extension candidates. Maximal degree in co-relation 2001. Up to 203 conditions per place. [2022-09-20 22:54:11,235 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 67 selfloop transitions, 24 changer transitions 22/174 dead transitions. [2022-09-20 22:54:11,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 174 transitions, 1570 flow [2022-09-20 22:54:11,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:54:11,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:54:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1151 transitions. [2022-09-20 22:54:11,237 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6637831603229527 [2022-09-20 22:54:11,237 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1151 transitions. [2022-09-20 22:54:11,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1151 transitions. [2022-09-20 22:54:11,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:11,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1151 transitions. [2022-09-20 22:54:11,239 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 22:54:11,241 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 22:54:11,241 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 22:54:11,241 INFO L175 Difference]: Start difference. First operand has 231 places, 143 transitions, 1007 flow. Second operand 17 states and 1151 transitions. [2022-09-20 22:54:11,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 174 transitions, 1570 flow [2022-09-20 22:54:11,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 174 transitions, 1455 flow, removed 18 selfloop flow, removed 22 redundant places. [2022-09-20 22:54:11,291 INFO L231 Difference]: Finished difference. Result has 218 places, 147 transitions, 1060 flow [2022-09-20 22:54:11,292 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1060, PETRI_PLACES=218, PETRI_TRANSITIONS=147} [2022-09-20 22:54:11,292 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 127 predicate places. [2022-09-20 22:54:11,292 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 147 transitions, 1060 flow [2022-09-20 22:54:11,292 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 22:54:11,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:11,293 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 22:54:11,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-20 22:54:11,293 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 22:54:11,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:11,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1362875186, now seen corresponding path program 4 times [2022-09-20 22:54:11,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:11,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041501583] [2022-09-20 22:54:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:11,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:11,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:11,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041501583] [2022-09-20 22:54:11,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041501583] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:11,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:11,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:11,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649261976] [2022-09-20 22:54:11,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:11,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:11,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:11,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:11,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:11,422 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:11,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 147 transitions, 1060 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 22:54:11,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:11,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:11,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:11,808 INFO L130 PetriNetUnfolder]: 109/528 cut-off events. [2022-09-20 22:54:11,809 INFO L131 PetriNetUnfolder]: For 2047/2067 co-relation queries the response was YES. [2022-09-20 22:54:11,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2146 conditions, 528 events. 109/528 cut-off events. For 2047/2067 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2915 event pairs, 41 based on Foata normal form. 1/522 useless extension candidates. Maximal degree in co-relation 2074. Up to 206 conditions per place. [2022-09-20 22:54:11,815 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 101 selfloop transitions, 15 changer transitions 32/209 dead transitions. [2022-09-20 22:54:11,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 209 transitions, 1864 flow [2022-09-20 22:54:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 22:54:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 22:54:11,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1421 transitions. [2022-09-20 22:54:11,817 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6633986928104575 [2022-09-20 22:54:11,817 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1421 transitions. [2022-09-20 22:54:11,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1421 transitions. [2022-09-20 22:54:11,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:11,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1421 transitions. [2022-09-20 22:54:11,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.66666666666667) internal successors, (1421), 21 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:11,822 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 22:54:11,822 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 22:54:11,822 INFO L175 Difference]: Start difference. First operand has 218 places, 147 transitions, 1060 flow. Second operand 21 states and 1421 transitions. [2022-09-20 22:54:11,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 209 transitions, 1864 flow [2022-09-20 22:54:11,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 209 transitions, 1783 flow, removed 25 selfloop flow, removed 8 redundant places. [2022-09-20 22:54:11,840 INFO L231 Difference]: Finished difference. Result has 238 places, 158 transitions, 1193 flow [2022-09-20 22:54:11,840 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1193, PETRI_PLACES=238, PETRI_TRANSITIONS=158} [2022-09-20 22:54:11,841 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 147 predicate places. [2022-09-20 22:54:11,841 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 158 transitions, 1193 flow [2022-09-20 22:54:11,841 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 22:54:11,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:11,841 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 22:54:11,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-20 22:54:11,842 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 22:54:11,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:11,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1751985402, now seen corresponding path program 11 times [2022-09-20 22:54:11,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:11,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280047920] [2022-09-20 22:54:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:11,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:11,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:11,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280047920] [2022-09-20 22:54:11,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280047920] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:11,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:11,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:11,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644131829] [2022-09-20 22:54:11,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:11,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:11,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:11,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:11,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:11,958 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:11,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 158 transitions, 1193 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 22:54:11,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:11,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:11,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:12,310 INFO L130 PetriNetUnfolder]: 102/517 cut-off events. [2022-09-20 22:54:12,310 INFO L131 PetriNetUnfolder]: For 2988/3011 co-relation queries the response was YES. [2022-09-20 22:54:12,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 517 events. 102/517 cut-off events. For 2988/3011 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2912 event pairs, 57 based on Foata normal form. 1/512 useless extension candidates. Maximal degree in co-relation 2231. Up to 235 conditions per place. [2022-09-20 22:54:12,316 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 77 selfloop transitions, 15 changer transitions 29/182 dead transitions. [2022-09-20 22:54:12,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 182 transitions, 1635 flow [2022-09-20 22:54:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:54:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:54:12,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1214 transitions. [2022-09-20 22:54:12,319 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6612200435729847 [2022-09-20 22:54:12,319 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1214 transitions. [2022-09-20 22:54:12,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1214 transitions. [2022-09-20 22:54:12,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:12,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1214 transitions. [2022-09-20 22:54:12,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.44444444444444) internal successors, (1214), 18 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:12,324 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 22:54:12,324 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 22:54:12,324 INFO L175 Difference]: Start difference. First operand has 238 places, 158 transitions, 1193 flow. Second operand 18 states and 1214 transitions. [2022-09-20 22:54:12,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 182 transitions, 1635 flow [2022-09-20 22:54:12,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 182 transitions, 1557 flow, removed 39 selfloop flow, removed 11 redundant places. [2022-09-20 22:54:12,346 INFO L231 Difference]: Finished difference. Result has 239 places, 149 transitions, 1057 flow [2022-09-20 22:54:12,346 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1057, PETRI_PLACES=239, PETRI_TRANSITIONS=149} [2022-09-20 22:54:12,347 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 148 predicate places. [2022-09-20 22:54:12,347 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 149 transitions, 1057 flow [2022-09-20 22:54:12,347 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 22:54:12,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:12,347 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 22:54:12,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-20 22:54:12,348 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 22:54:12,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:12,348 INFO L85 PathProgramCache]: Analyzing trace with hash 470816080, now seen corresponding path program 5 times [2022-09-20 22:54:12,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:12,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098418355] [2022-09-20 22:54:12,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:12,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:12,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:12,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098418355] [2022-09-20 22:54:12,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098418355] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:12,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:12,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:12,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145387845] [2022-09-20 22:54:12,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:12,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:12,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:12,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:12,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:12,454 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:12,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 149 transitions, 1057 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 22:54:12,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:12,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:12,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:12,787 INFO L130 PetriNetUnfolder]: 100/502 cut-off events. [2022-09-20 22:54:12,787 INFO L131 PetriNetUnfolder]: For 2213/2244 co-relation queries the response was YES. [2022-09-20 22:54:12,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 502 events. 100/502 cut-off events. For 2213/2244 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2780 event pairs, 35 based on Foata normal form. 3/497 useless extension candidates. Maximal degree in co-relation 2031. Up to 206 conditions per place. [2022-09-20 22:54:12,793 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 96 selfloop transitions, 20 changer transitions 32/209 dead transitions. [2022-09-20 22:54:12,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 209 transitions, 1929 flow [2022-09-20 22:54:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 22:54:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 22:54:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1351 transitions. [2022-09-20 22:54:12,796 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6622549019607843 [2022-09-20 22:54:12,796 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1351 transitions. [2022-09-20 22:54:12,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1351 transitions. [2022-09-20 22:54:12,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:12,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1351 transitions. [2022-09-20 22:54:12,798 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 22:54:12,800 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 22:54:12,801 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 22:54:12,801 INFO L175 Difference]: Start difference. First operand has 239 places, 149 transitions, 1057 flow. Second operand 20 states and 1351 transitions. [2022-09-20 22:54:12,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 209 transitions, 1929 flow [2022-09-20 22:54:12,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 209 transitions, 1836 flow, removed 19 selfloop flow, removed 21 redundant places. [2022-09-20 22:54:12,819 INFO L231 Difference]: Finished difference. Result has 235 places, 158 transitions, 1182 flow [2022-09-20 22:54:12,820 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1182, PETRI_PLACES=235, PETRI_TRANSITIONS=158} [2022-09-20 22:54:12,821 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 144 predicate places. [2022-09-20 22:54:12,821 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 158 transitions, 1182 flow [2022-09-20 22:54:12,821 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 22:54:12,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:12,821 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 22:54:12,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-20 22:54:12,822 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 22:54:12,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1576371582, now seen corresponding path program 6 times [2022-09-20 22:54:12,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:12,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116971287] [2022-09-20 22:54:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:12,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:12,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:12,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116971287] [2022-09-20 22:54:12,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116971287] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:12,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:12,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:12,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333689126] [2022-09-20 22:54:12,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:12,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:12,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:12,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:12,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:12,930 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:12,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 158 transitions, 1182 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 22:54:12,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:12,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:12,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:13,313 INFO L130 PetriNetUnfolder]: 98/515 cut-off events. [2022-09-20 22:54:13,313 INFO L131 PetriNetUnfolder]: For 2891/2914 co-relation queries the response was YES. [2022-09-20 22:54:13,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 515 events. 98/515 cut-off events. For 2891/2914 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2894 event pairs, 29 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 2186. Up to 190 conditions per place. [2022-09-20 22:54:13,319 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 99 selfloop transitions, 24 changer transitions 34/218 dead transitions. [2022-09-20 22:54:13,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 218 transitions, 2193 flow [2022-09-20 22:54:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 22:54:13,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 22:54:13,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1482 transitions. [2022-09-20 22:54:13,322 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.660427807486631 [2022-09-20 22:54:13,322 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1482 transitions. [2022-09-20 22:54:13,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1482 transitions. [2022-09-20 22:54:13,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:13,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1482 transitions. [2022-09-20 22:54:13,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.36363636363636) internal successors, (1482), 22 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:13,328 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 22:54:13,328 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 22:54:13,328 INFO L175 Difference]: Start difference. First operand has 235 places, 158 transitions, 1182 flow. Second operand 22 states and 1482 transitions. [2022-09-20 22:54:13,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 218 transitions, 2193 flow [2022-09-20 22:54:13,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 218 transitions, 1960 flow, removed 98 selfloop flow, removed 13 redundant places. [2022-09-20 22:54:13,347 INFO L231 Difference]: Finished difference. Result has 246 places, 163 transitions, 1250 flow [2022-09-20 22:54:13,348 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1250, PETRI_PLACES=246, PETRI_TRANSITIONS=163} [2022-09-20 22:54:13,349 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 155 predicate places. [2022-09-20 22:54:13,349 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 163 transitions, 1250 flow [2022-09-20 22:54:13,349 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 22:54:13,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:13,349 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 22:54:13,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-20 22:54:13,349 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 22:54:13,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:13,350 INFO L85 PathProgramCache]: Analyzing trace with hash -959076102, now seen corresponding path program 7 times [2022-09-20 22:54:13,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:13,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810546428] [2022-09-20 22:54:13,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:13,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:13,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:13,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810546428] [2022-09-20 22:54:13,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810546428] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:13,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:13,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:13,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112308020] [2022-09-20 22:54:13,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:13,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:13,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:13,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:13,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:13,451 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:13,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 163 transitions, 1250 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 22:54:13,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:13,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:13,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:13,721 INFO L130 PetriNetUnfolder]: 91/484 cut-off events. [2022-09-20 22:54:13,721 INFO L131 PetriNetUnfolder]: For 2666/2701 co-relation queries the response was YES. [2022-09-20 22:54:13,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 484 events. 91/484 cut-off events. For 2666/2701 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2656 event pairs, 32 based on Foata normal form. 6/484 useless extension candidates. Maximal degree in co-relation 2091. Up to 200 conditions per place. [2022-09-20 22:54:13,728 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 92 selfloop transitions, 26 changer transitions 27/206 dead transitions. [2022-09-20 22:54:13,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 206 transitions, 2052 flow [2022-09-20 22:54:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:54:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:54:13,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1088 transitions. [2022-09-20 22:54:13,730 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-09-20 22:54:13,730 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1088 transitions. [2022-09-20 22:54:13,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1088 transitions. [2022-09-20 22:54:13,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:13,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1088 transitions. [2022-09-20 22:54:13,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 68.0) internal successors, (1088), 16 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:13,734 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 22:54:13,735 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 22:54:13,735 INFO L175 Difference]: Start difference. First operand has 246 places, 163 transitions, 1250 flow. Second operand 16 states and 1088 transitions. [2022-09-20 22:54:13,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 206 transitions, 2052 flow [2022-09-20 22:54:13,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 206 transitions, 1891 flow, removed 70 selfloop flow, removed 13 redundant places. [2022-09-20 22:54:13,756 INFO L231 Difference]: Finished difference. Result has 243 places, 168 transitions, 1332 flow [2022-09-20 22:54:13,756 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1332, PETRI_PLACES=243, PETRI_TRANSITIONS=168} [2022-09-20 22:54:13,757 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 152 predicate places. [2022-09-20 22:54:13,757 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 168 transitions, 1332 flow [2022-09-20 22:54:13,757 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 22:54:13,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:13,758 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 22:54:13,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-20 22:54:13,758 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 22:54:13,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:13,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1433577508, now seen corresponding path program 8 times [2022-09-20 22:54:13,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:13,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103217156] [2022-09-20 22:54:13,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:13,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:13,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:13,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103217156] [2022-09-20 22:54:13,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103217156] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:13,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:13,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:13,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832695743] [2022-09-20 22:54:13,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:13,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:13,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:13,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:13,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:13,866 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:13,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 168 transitions, 1332 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 22:54:13,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:13,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:13,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:14,172 INFO L130 PetriNetUnfolder]: 82/458 cut-off events. [2022-09-20 22:54:14,172 INFO L131 PetriNetUnfolder]: For 2186/2213 co-relation queries the response was YES. [2022-09-20 22:54:14,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 458 events. 82/458 cut-off events. For 2186/2213 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2471 event pairs, 29 based on Foata normal form. 3/456 useless extension candidates. Maximal degree in co-relation 1902. Up to 188 conditions per place. [2022-09-20 22:54:14,179 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 88 selfloop transitions, 14 changer transitions 35/198 dead transitions. [2022-09-20 22:54:14,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 198 transitions, 1858 flow [2022-09-20 22:54:14,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:54:14,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:54:14,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-09-20 22:54:14,181 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-09-20 22:54:14,181 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-09-20 22:54:14,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-09-20 22:54:14,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:14,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-09-20 22:54:14,183 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 22:54:14,188 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 22:54:14,188 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 22:54:14,188 INFO L175 Difference]: Start difference. First operand has 243 places, 168 transitions, 1332 flow. Second operand 18 states and 1213 transitions. [2022-09-20 22:54:14,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 198 transitions, 1858 flow [2022-09-20 22:54:14,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 198 transitions, 1740 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-09-20 22:54:14,209 INFO L231 Difference]: Finished difference. Result has 251 places, 153 transitions, 1094 flow [2022-09-20 22:54:14,209 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1094, PETRI_PLACES=251, PETRI_TRANSITIONS=153} [2022-09-20 22:54:14,210 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 160 predicate places. [2022-09-20 22:54:14,210 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 153 transitions, 1094 flow [2022-09-20 22:54:14,210 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 22:54:14,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:14,210 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 22:54:14,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-20 22:54:14,211 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 22:54:14,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:14,212 INFO L85 PathProgramCache]: Analyzing trace with hash -724903550, now seen corresponding path program 12 times [2022-09-20 22:54:14,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:14,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540316057] [2022-09-20 22:54:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:14,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:14,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:14,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540316057] [2022-09-20 22:54:14,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540316057] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:14,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:14,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:14,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356898105] [2022-09-20 22:54:14,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:14,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:14,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:14,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:14,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:14,318 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:14,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 153 transitions, 1094 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 22:54:14,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:14,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:14,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:14,595 INFO L130 PetriNetUnfolder]: 72/414 cut-off events. [2022-09-20 22:54:14,596 INFO L131 PetriNetUnfolder]: For 1918/1948 co-relation queries the response was YES. [2022-09-20 22:54:14,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 414 events. 72/414 cut-off events. For 1918/1948 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2105 event pairs, 34 based on Foata normal form. 3/411 useless extension candidates. Maximal degree in co-relation 1676. Up to 183 conditions per place. [2022-09-20 22:54:14,601 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 72 selfloop transitions, 3 changer transitions 34/170 dead transitions. [2022-09-20 22:54:14,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 170 transitions, 1415 flow [2022-09-20 22:54:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:54:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:54:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1142 transitions. [2022-09-20 22:54:14,603 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6585928489042676 [2022-09-20 22:54:14,603 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1142 transitions. [2022-09-20 22:54:14,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1142 transitions. [2022-09-20 22:54:14,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:14,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1142 transitions. [2022-09-20 22:54:14,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.17647058823529) internal successors, (1142), 17 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:14,607 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 22:54:14,608 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 22:54:14,608 INFO L175 Difference]: Start difference. First operand has 251 places, 153 transitions, 1094 flow. Second operand 17 states and 1142 transitions. [2022-09-20 22:54:14,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 170 transitions, 1415 flow [2022-09-20 22:54:14,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 170 transitions, 1341 flow, removed 13 selfloop flow, removed 18 redundant places. [2022-09-20 22:54:14,626 INFO L231 Difference]: Finished difference. Result has 231 places, 133 transitions, 813 flow [2022-09-20 22:54:14,626 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=813, PETRI_PLACES=231, PETRI_TRANSITIONS=133} [2022-09-20 22:54:14,626 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 140 predicate places. [2022-09-20 22:54:14,626 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 133 transitions, 813 flow [2022-09-20 22:54:14,627 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 22:54:14,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:14,627 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 22:54:14,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-20 22:54:14,627 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 22:54:14,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:14,628 INFO L85 PathProgramCache]: Analyzing trace with hash -192173326, now seen corresponding path program 9 times [2022-09-20 22:54:14,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:14,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376725770] [2022-09-20 22:54:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:14,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:14,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:14,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376725770] [2022-09-20 22:54:14,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376725770] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:14,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:14,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:14,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638438864] [2022-09-20 22:54:14,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:14,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:14,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:14,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:14,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:14,735 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:14,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 133 transitions, 813 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 22:54:14,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:14,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:14,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:15,049 INFO L130 PetriNetUnfolder]: 69/401 cut-off events. [2022-09-20 22:54:15,050 INFO L131 PetriNetUnfolder]: For 1500/1517 co-relation queries the response was YES. [2022-09-20 22:54:15,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 401 events. 69/401 cut-off events. For 1500/1517 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1948 event pairs, 26 based on Foata normal form. 3/400 useless extension candidates. Maximal degree in co-relation 1534. Up to 141 conditions per place. [2022-09-20 22:54:15,055 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 65 selfloop transitions, 22 changer transitions 25/173 dead transitions. [2022-09-20 22:54:15,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 173 transitions, 1405 flow [2022-09-20 22:54:15,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:54:15,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:54:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1155 transitions. [2022-09-20 22:54:15,057 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6660899653979239 [2022-09-20 22:54:15,057 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1155 transitions. [2022-09-20 22:54:15,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1155 transitions. [2022-09-20 22:54:15,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:15,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1155 transitions. [2022-09-20 22:54:15,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.94117647058823) internal successors, (1155), 17 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:15,061 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 22:54:15,061 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 22:54:15,061 INFO L175 Difference]: Start difference. First operand has 231 places, 133 transitions, 813 flow. Second operand 17 states and 1155 transitions. [2022-09-20 22:54:15,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 173 transitions, 1405 flow [2022-09-20 22:54:15,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 173 transitions, 1323 flow, removed 22 selfloop flow, removed 24 redundant places. [2022-09-20 22:54:15,073 INFO L231 Difference]: Finished difference. Result has 203 places, 141 transitions, 917 flow [2022-09-20 22:54:15,073 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=917, PETRI_PLACES=203, PETRI_TRANSITIONS=141} [2022-09-20 22:54:15,076 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 112 predicate places. [2022-09-20 22:54:15,076 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 141 transitions, 917 flow [2022-09-20 22:54:15,077 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 22:54:15,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:15,077 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 22:54:15,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-09-20 22:54:15,077 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 22:54:15,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:15,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1854936996, now seen corresponding path program 13 times [2022-09-20 22:54:15,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:15,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556584398] [2022-09-20 22:54:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:15,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:15,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:15,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:15,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556584398] [2022-09-20 22:54:15,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556584398] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:15,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:15,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:15,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037269625] [2022-09-20 22:54:15,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:15,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:15,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:15,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:15,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:15,181 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:15,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 141 transitions, 917 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 22:54:15,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:15,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:15,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:15,543 INFO L130 PetriNetUnfolder]: 80/436 cut-off events. [2022-09-20 22:54:15,543 INFO L131 PetriNetUnfolder]: For 1424/1441 co-relation queries the response was YES. [2022-09-20 22:54:15,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 436 events. 80/436 cut-off events. For 1424/1441 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2232 event pairs, 28 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1609. Up to 173 conditions per place. [2022-09-20 22:54:15,547 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 86 selfloop transitions, 19 changer transitions 28/194 dead transitions. [2022-09-20 22:54:15,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 194 transitions, 1509 flow [2022-09-20 22:54:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 22:54:15,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 22:54:15,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1475 transitions. [2022-09-20 22:54:15,549 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6573083778966132 [2022-09-20 22:54:15,549 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1475 transitions. [2022-09-20 22:54:15,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1475 transitions. [2022-09-20 22:54:15,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:15,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1475 transitions. [2022-09-20 22:54:15,552 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 22:54:15,554 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 22:54:15,555 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 22:54:15,555 INFO L175 Difference]: Start difference. First operand has 203 places, 141 transitions, 917 flow. Second operand 22 states and 1475 transitions. [2022-09-20 22:54:15,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 194 transitions, 1509 flow [2022-09-20 22:54:15,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 194 transitions, 1447 flow, removed 22 selfloop flow, removed 8 redundant places. [2022-09-20 22:54:15,566 INFO L231 Difference]: Finished difference. Result has 223 places, 152 transitions, 1022 flow [2022-09-20 22:54:15,566 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1022, PETRI_PLACES=223, PETRI_TRANSITIONS=152} [2022-09-20 22:54:15,569 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 132 predicate places. [2022-09-20 22:54:15,569 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 152 transitions, 1022 flow [2022-09-20 22:54:15,569 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 22:54:15,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:15,570 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 22:54:15,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-09-20 22:54:15,570 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 22:54:15,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:15,570 INFO L85 PathProgramCache]: Analyzing trace with hash -290657432, now seen corresponding path program 10 times [2022-09-20 22:54:15,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:15,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298998551] [2022-09-20 22:54:15,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:15,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:15,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:15,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298998551] [2022-09-20 22:54:15,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298998551] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:15,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:15,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:15,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11763937] [2022-09-20 22:54:15,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:15,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:15,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:15,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:15,674 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:15,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 152 transitions, 1022 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 22:54:15,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:15,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:15,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:15,950 INFO L130 PetriNetUnfolder]: 75/427 cut-off events. [2022-09-20 22:54:15,950 INFO L131 PetriNetUnfolder]: For 1615/1632 co-relation queries the response was YES. [2022-09-20 22:54:15,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1765 conditions, 427 events. 75/427 cut-off events. For 1615/1632 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2164 event pairs, 26 based on Foata normal form. 3/426 useless extension candidates. Maximal degree in co-relation 1692. Up to 165 conditions per place. [2022-09-20 22:54:15,960 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 78 selfloop transitions, 23 changer transitions 27/189 dead transitions. [2022-09-20 22:54:15,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 189 transitions, 1654 flow [2022-09-20 22:54:15,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:54:15,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:54:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1219 transitions. [2022-09-20 22:54:15,962 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6639433551198257 [2022-09-20 22:54:15,962 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1219 transitions. [2022-09-20 22:54:15,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1219 transitions. [2022-09-20 22:54:15,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:15,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1219 transitions. [2022-09-20 22:54:15,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.72222222222223) internal successors, (1219), 18 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:15,966 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 22:54:15,966 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 22:54:15,966 INFO L175 Difference]: Start difference. First operand has 223 places, 152 transitions, 1022 flow. Second operand 18 states and 1219 transitions. [2022-09-20 22:54:15,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 189 transitions, 1654 flow [2022-09-20 22:54:15,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 189 transitions, 1614 flow, removed 16 selfloop flow, removed 11 redundant places. [2022-09-20 22:54:15,979 INFO L231 Difference]: Finished difference. Result has 224 places, 157 transitions, 1141 flow [2022-09-20 22:54:15,979 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1141, PETRI_PLACES=224, PETRI_TRANSITIONS=157} [2022-09-20 22:54:15,980 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 133 predicate places. [2022-09-20 22:54:15,980 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 157 transitions, 1141 flow [2022-09-20 22:54:15,980 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 22:54:15,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:15,980 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 22:54:15,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-09-20 22:54:15,981 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 22:54:15,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:15,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1787861376, now seen corresponding path program 14 times [2022-09-20 22:54:15,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:15,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884930278] [2022-09-20 22:54:15,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:15,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:16,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:16,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884930278] [2022-09-20 22:54:16,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884930278] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:16,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:16,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:16,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665983904] [2022-09-20 22:54:16,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:16,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:16,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:16,073 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:16,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 157 transitions, 1141 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 22:54:16,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:16,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:16,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:16,402 INFO L130 PetriNetUnfolder]: 74/421 cut-off events. [2022-09-20 22:54:16,402 INFO L131 PetriNetUnfolder]: For 1617/1634 co-relation queries the response was YES. [2022-09-20 22:54:16,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 421 events. 74/421 cut-off events. For 1617/1634 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2158 event pairs, 26 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1660. Up to 166 conditions per place. [2022-09-20 22:54:16,411 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 87 selfloop transitions, 21 changer transitions 28/197 dead transitions. [2022-09-20 22:54:16,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 197 transitions, 1707 flow [2022-09-20 22:54:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 22:54:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 22:54:16,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1409 transitions. [2022-09-20 22:54:16,413 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.657796451914099 [2022-09-20 22:54:16,413 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1409 transitions. [2022-09-20 22:54:16,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1409 transitions. [2022-09-20 22:54:16,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:16,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1409 transitions. [2022-09-20 22:54:16,415 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 22:54:16,417 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 22:54:16,418 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 22:54:16,418 INFO L175 Difference]: Start difference. First operand has 224 places, 157 transitions, 1141 flow. Second operand 21 states and 1409 transitions. [2022-09-20 22:54:16,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 197 transitions, 1707 flow [2022-09-20 22:54:16,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 197 transitions, 1637 flow, removed 26 selfloop flow, removed 6 redundant places. [2022-09-20 22:54:16,432 INFO L231 Difference]: Finished difference. Result has 243 places, 159 transitions, 1192 flow [2022-09-20 22:54:16,433 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1192, PETRI_PLACES=243, PETRI_TRANSITIONS=159} [2022-09-20 22:54:16,434 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 152 predicate places. [2022-09-20 22:54:16,434 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 159 transitions, 1192 flow [2022-09-20 22:54:16,434 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 22:54:16,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:16,434 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 22:54:16,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-09-20 22:54:16,434 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 22:54:16,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1351889798, now seen corresponding path program 11 times [2022-09-20 22:54:16,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:16,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490317839] [2022-09-20 22:54:16,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:16,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:16,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:16,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490317839] [2022-09-20 22:54:16,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490317839] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:16,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:16,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:16,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327863965] [2022-09-20 22:54:16,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:16,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:16,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:16,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:16,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:16,543 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:16,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 159 transitions, 1192 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 22:54:16,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:16,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:16,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:16,812 INFO L130 PetriNetUnfolder]: 69/407 cut-off events. [2022-09-20 22:54:16,812 INFO L131 PetriNetUnfolder]: For 1780/1789 co-relation queries the response was YES. [2022-09-20 22:54:16,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1770 conditions, 407 events. 69/407 cut-off events. For 1780/1789 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2052 event pairs, 26 based on Foata normal form. 1/404 useless extension candidates. Maximal degree in co-relation 1689. Up to 159 conditions per place. [2022-09-20 22:54:16,817 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 79 selfloop transitions, 14 changer transitions 34/188 dead transitions. [2022-09-20 22:54:16,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 188 transitions, 1684 flow [2022-09-20 22:54:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:54:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:54:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1154 transitions. [2022-09-20 22:54:16,819 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6655132641291811 [2022-09-20 22:54:16,819 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1154 transitions. [2022-09-20 22:54:16,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1154 transitions. [2022-09-20 22:54:16,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:16,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1154 transitions. [2022-09-20 22:54:16,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.88235294117646) internal successors, (1154), 17 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:16,823 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 22:54:16,823 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 22:54:16,823 INFO L175 Difference]: Start difference. First operand has 243 places, 159 transitions, 1192 flow. Second operand 17 states and 1154 transitions. [2022-09-20 22:54:16,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 188 transitions, 1684 flow [2022-09-20 22:54:16,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 188 transitions, 1593 flow, removed 28 selfloop flow, removed 16 redundant places. [2022-09-20 22:54:16,838 INFO L231 Difference]: Finished difference. Result has 237 places, 150 transitions, 1035 flow [2022-09-20 22:54:16,838 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1035, PETRI_PLACES=237, PETRI_TRANSITIONS=150} [2022-09-20 22:54:16,839 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 146 predicate places. [2022-09-20 22:54:16,839 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 150 transitions, 1035 flow [2022-09-20 22:54:16,840 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 22:54:16,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:16,840 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 22:54:16,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-09-20 22:54:16,840 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 22:54:16,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:16,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1144801982, now seen corresponding path program 15 times [2022-09-20 22:54:16,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:16,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899592164] [2022-09-20 22:54:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:16,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:16,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:16,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899592164] [2022-09-20 22:54:16,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899592164] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:16,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:16,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:16,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447574569] [2022-09-20 22:54:16,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:16,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:16,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:16,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:16,932 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:16,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 150 transitions, 1035 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 22:54:16,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:16,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:16,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:17,217 INFO L130 PetriNetUnfolder]: 67/404 cut-off events. [2022-09-20 22:54:17,217 INFO L131 PetriNetUnfolder]: For 1654/1671 co-relation queries the response was YES. [2022-09-20 22:54:17,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 404 events. 67/404 cut-off events. For 1654/1671 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2021 event pairs, 23 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1559. Up to 157 conditions per place. [2022-09-20 22:54:17,224 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 78 selfloop transitions, 22 changer transitions 25/186 dead transitions. [2022-09-20 22:54:17,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 186 transitions, 1559 flow [2022-09-20 22:54:17,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:54:17,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:54:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1086 transitions. [2022-09-20 22:54:17,226 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6654411764705882 [2022-09-20 22:54:17,226 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1086 transitions. [2022-09-20 22:54:17,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1086 transitions. [2022-09-20 22:54:17,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:17,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1086 transitions. [2022-09-20 22:54:17,228 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 22:54:17,232 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 22:54:17,233 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 22:54:17,233 INFO L175 Difference]: Start difference. First operand has 237 places, 150 transitions, 1035 flow. Second operand 16 states and 1086 transitions. [2022-09-20 22:54:17,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 186 transitions, 1559 flow [2022-09-20 22:54:17,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 186 transitions, 1469 flow, removed 14 selfloop flow, removed 22 redundant places. [2022-09-20 22:54:17,245 INFO L231 Difference]: Finished difference. Result has 223 places, 155 transitions, 1075 flow [2022-09-20 22:54:17,245 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1075, PETRI_PLACES=223, PETRI_TRANSITIONS=155} [2022-09-20 22:54:17,245 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 132 predicate places. [2022-09-20 22:54:17,245 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 155 transitions, 1075 flow [2022-09-20 22:54:17,246 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 22:54:17,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:17,246 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 22:54:17,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-09-20 22:54:17,246 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 22:54:17,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:17,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1081308334, now seen corresponding path program 16 times [2022-09-20 22:54:17,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:17,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650208084] [2022-09-20 22:54:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:17,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:17,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:17,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650208084] [2022-09-20 22:54:17,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650208084] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:17,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:17,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:17,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783837847] [2022-09-20 22:54:17,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:17,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:17,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:17,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:17,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:17,340 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:17,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 155 transitions, 1075 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 22:54:17,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:17,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:17,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:17,645 INFO L130 PetriNetUnfolder]: 58/370 cut-off events. [2022-09-20 22:54:17,645 INFO L131 PetriNetUnfolder]: For 1345/1361 co-relation queries the response was YES. [2022-09-20 22:54:17,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1503 conditions, 370 events. 58/370 cut-off events. For 1345/1361 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1757 event pairs, 23 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 1433. Up to 151 conditions per place. [2022-09-20 22:54:17,648 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 74 selfloop transitions, 10 changer transitions 30/175 dead transitions. [2022-09-20 22:54:17,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 175 transitions, 1444 flow [2022-09-20 22:54:17,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:54:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:54:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1208 transitions. [2022-09-20 22:54:17,650 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6579520697167756 [2022-09-20 22:54:17,650 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1208 transitions. [2022-09-20 22:54:17,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1208 transitions. [2022-09-20 22:54:17,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:17,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1208 transitions. [2022-09-20 22:54:17,652 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 22:54:17,654 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 22:54:17,654 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 22:54:17,654 INFO L175 Difference]: Start difference. First operand has 223 places, 155 transitions, 1075 flow. Second operand 18 states and 1208 transitions. [2022-09-20 22:54:17,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 175 transitions, 1444 flow [2022-09-20 22:54:17,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 175 transitions, 1346 flow, removed 27 selfloop flow, removed 9 redundant places. [2022-09-20 22:54:17,665 INFO L231 Difference]: Finished difference. Result has 231 places, 140 transitions, 881 flow [2022-09-20 22:54:17,666 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=881, PETRI_PLACES=231, PETRI_TRANSITIONS=140} [2022-09-20 22:54:17,666 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 140 predicate places. [2022-09-20 22:54:17,666 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 140 transitions, 881 flow [2022-09-20 22:54:17,666 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 22:54:17,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:17,667 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 22:54:17,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-09-20 22:54:17,667 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 22:54:17,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1429820720, now seen corresponding path program 12 times [2022-09-20 22:54:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:17,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929292528] [2022-09-20 22:54:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:17,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:17,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:17,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:17,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929292528] [2022-09-20 22:54:17,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929292528] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:17,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:17,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:17,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938279537] [2022-09-20 22:54:17,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:17,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:17,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:17,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:17,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:17,765 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:17,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 140 transitions, 881 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 22:54:17,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:17,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:17,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:18,038 INFO L130 PetriNetUnfolder]: 49/329 cut-off events. [2022-09-20 22:54:18,039 INFO L131 PetriNetUnfolder]: For 1181/1197 co-relation queries the response was YES. [2022-09-20 22:54:18,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 329 events. 49/329 cut-off events. For 1181/1197 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1430 event pairs, 17 based on Foata normal form. 3/329 useless extension candidates. Maximal degree in co-relation 1237. Up to 121 conditions per place. [2022-09-20 22:54:18,042 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 59 selfloop transitions, 3 changer transitions 37/160 dead transitions. [2022-09-20 22:54:18,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 160 transitions, 1201 flow [2022-09-20 22:54:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:54:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:54:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1209 transitions. [2022-09-20 22:54:18,044 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6584967320261438 [2022-09-20 22:54:18,044 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1209 transitions. [2022-09-20 22:54:18,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1209 transitions. [2022-09-20 22:54:18,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:18,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1209 transitions. [2022-09-20 22:54:18,046 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 22:54:18,048 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 22:54:18,048 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 22:54:18,048 INFO L175 Difference]: Start difference. First operand has 231 places, 140 transitions, 881 flow. Second operand 18 states and 1209 transitions. [2022-09-20 22:54:18,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 160 transitions, 1201 flow [2022-09-20 22:54:18,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 160 transitions, 1131 flow, removed 16 selfloop flow, removed 18 redundant places. [2022-09-20 22:54:18,058 INFO L231 Difference]: Finished difference. Result has 212 places, 120 transitions, 628 flow [2022-09-20 22:54:18,058 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=628, PETRI_PLACES=212, PETRI_TRANSITIONS=120} [2022-09-20 22:54:18,059 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 121 predicate places. [2022-09-20 22:54:18,059 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 120 transitions, 628 flow [2022-09-20 22:54:18,059 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 22:54:18,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:18,059 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 22:54:18,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-09-20 22:54:18,059 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 22:54:18,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:18,060 INFO L85 PathProgramCache]: Analyzing trace with hash 502052416, now seen corresponding path program 17 times [2022-09-20 22:54:18,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:18,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681890191] [2022-09-20 22:54:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:18,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:18,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:18,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681890191] [2022-09-20 22:54:18,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681890191] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:18,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:18,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:18,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766935434] [2022-09-20 22:54:18,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:18,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:18,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:18,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:18,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:18,155 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:18,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 120 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 22:54:18,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:18,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:18,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:18,441 INFO L130 PetriNetUnfolder]: 48/331 cut-off events. [2022-09-20 22:54:18,442 INFO L131 PetriNetUnfolder]: For 905/911 co-relation queries the response was YES. [2022-09-20 22:54:18,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 331 events. 48/331 cut-off events. For 905/911 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1406 event pairs, 17 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 1099. Up to 105 conditions per place. [2022-09-20 22:54:18,445 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 52 selfloop transitions, 20 changer transitions 23/156 dead transitions. [2022-09-20 22:54:18,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 156 transitions, 1065 flow [2022-09-20 22:54:18,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:54:18,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:54:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1149 transitions. [2022-09-20 22:54:18,447 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6626297577854672 [2022-09-20 22:54:18,447 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1149 transitions. [2022-09-20 22:54:18,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1149 transitions. [2022-09-20 22:54:18,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:18,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1149 transitions. [2022-09-20 22:54:18,449 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 22:54:18,450 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 22:54:18,451 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 22:54:18,451 INFO L175 Difference]: Start difference. First operand has 212 places, 120 transitions, 628 flow. Second operand 17 states and 1149 transitions. [2022-09-20 22:54:18,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 156 transitions, 1065 flow [2022-09-20 22:54:18,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 156 transitions, 988 flow, removed 18 selfloop flow, removed 24 redundant places. [2022-09-20 22:54:18,458 INFO L231 Difference]: Finished difference. Result has 185 places, 128 transitions, 709 flow [2022-09-20 22:54:18,458 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=709, PETRI_PLACES=185, PETRI_TRANSITIONS=128} [2022-09-20 22:54:18,458 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 94 predicate places. [2022-09-20 22:54:18,459 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 128 transitions, 709 flow [2022-09-20 22:54:18,459 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 22:54:18,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:18,459 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 22:54:18,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-09-20 22:54:18,459 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 22:54:18,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:18,460 INFO L85 PathProgramCache]: Analyzing trace with hash 535358104, now seen corresponding path program 13 times [2022-09-20 22:54:18,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:18,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493893361] [2022-09-20 22:54:18,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:18,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:18,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:18,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493893361] [2022-09-20 22:54:18,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493893361] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:18,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:18,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:18,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742842006] [2022-09-20 22:54:18,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:18,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:18,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:18,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:18,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:18,552 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:18,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 128 transitions, 709 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 22:54:18,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:18,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:18,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:18,900 INFO L130 PetriNetUnfolder]: 58/366 cut-off events. [2022-09-20 22:54:18,901 INFO L131 PetriNetUnfolder]: For 749/755 co-relation queries the response was YES. [2022-09-20 22:54:18,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 366 events. 58/366 cut-off events. For 749/755 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1680 event pairs, 12 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1246. Up to 113 conditions per place. [2022-09-20 22:54:18,904 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 73 selfloop transitions, 19 changer transitions 32/185 dead transitions. [2022-09-20 22:54:18,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 185 transitions, 1357 flow [2022-09-20 22:54:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 22:54:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 22:54:18,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1479 transitions. [2022-09-20 22:54:18,906 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2022-09-20 22:54:18,906 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1479 transitions. [2022-09-20 22:54:18,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1479 transitions. [2022-09-20 22:54:18,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:18,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1479 transitions. [2022-09-20 22:54:18,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.22727272727273) internal successors, (1479), 22 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:18,910 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 22:54:18,911 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 22:54:18,911 INFO L175 Difference]: Start difference. First operand has 185 places, 128 transitions, 709 flow. Second operand 22 states and 1479 transitions. [2022-09-20 22:54:18,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 185 transitions, 1357 flow [2022-09-20 22:54:18,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 185 transitions, 1299 flow, removed 21 selfloop flow, removed 7 redundant places. [2022-09-20 22:54:18,918 INFO L231 Difference]: Finished difference. Result has 206 places, 139 transitions, 848 flow [2022-09-20 22:54:18,918 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=848, PETRI_PLACES=206, PETRI_TRANSITIONS=139} [2022-09-20 22:54:18,919 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 115 predicate places. [2022-09-20 22:54:18,919 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 139 transitions, 848 flow [2022-09-20 22:54:18,919 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 22:54:18,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:18,919 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 22:54:18,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-09-20 22:54:18,920 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 22:54:18,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:18,920 INFO L85 PathProgramCache]: Analyzing trace with hash -641573382, now seen corresponding path program 18 times [2022-09-20 22:54:18,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:18,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124631685] [2022-09-20 22:54:18,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:18,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:19,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:19,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124631685] [2022-09-20 22:54:19,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124631685] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:19,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:19,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:19,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197553977] [2022-09-20 22:54:19,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:19,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:19,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:19,017 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:19,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 139 transitions, 848 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 22:54:19,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:19,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:19,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:19,316 INFO L130 PetriNetUnfolder]: 53/351 cut-off events. [2022-09-20 22:54:19,316 INFO L131 PetriNetUnfolder]: For 979/985 co-relation queries the response was YES. [2022-09-20 22:54:19,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 351 events. 53/351 cut-off events. For 979/985 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1597 event pairs, 14 based on Foata normal form. 1/351 useless extension candidates. Maximal degree in co-relation 1276. Up to 129 conditions per place. [2022-09-20 22:54:19,320 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 65 selfloop transitions, 21 changer transitions 25/172 dead transitions. [2022-09-20 22:54:19,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 172 transitions, 1339 flow [2022-09-20 22:54:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:54:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:54:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-09-20 22:54:19,321 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-09-20 22:54:19,321 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-09-20 22:54:19,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-09-20 22:54:19,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:19,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-09-20 22:54:19,323 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 22:54:19,325 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 22:54:19,325 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 22:54:19,325 INFO L175 Difference]: Start difference. First operand has 206 places, 139 transitions, 848 flow. Second operand 18 states and 1213 transitions. [2022-09-20 22:54:19,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 172 transitions, 1339 flow [2022-09-20 22:54:19,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 172 transitions, 1277 flow, removed 27 selfloop flow, removed 11 redundant places. [2022-09-20 22:54:19,334 INFO L231 Difference]: Finished difference. Result has 207 places, 144 transitions, 930 flow [2022-09-20 22:54:19,334 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=930, PETRI_PLACES=207, PETRI_TRANSITIONS=144} [2022-09-20 22:54:19,335 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 116 predicate places. [2022-09-20 22:54:19,335 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 144 transitions, 930 flow [2022-09-20 22:54:19,335 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 22:54:19,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:19,335 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 22:54:19,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-09-20 22:54:19,335 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 22:54:19,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash -907693244, now seen corresponding path program 19 times [2022-09-20 22:54:19,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:19,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286670086] [2022-09-20 22:54:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:19,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:19,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:19,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286670086] [2022-09-20 22:54:19,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286670086] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:19,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:19,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:19,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440226708] [2022-09-20 22:54:19,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:19,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:19,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:19,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:19,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:19,443 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:19,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 144 transitions, 930 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 22:54:19,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:19,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:19,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:19,692 INFO L130 PetriNetUnfolder]: 47/340 cut-off events. [2022-09-20 22:54:19,692 INFO L131 PetriNetUnfolder]: For 826/832 co-relation queries the response was YES. [2022-09-20 22:54:19,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 340 events. 47/340 cut-off events. For 826/832 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1516 event pairs, 14 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 1213. Up to 129 conditions per place. [2022-09-20 22:54:19,695 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 63 selfloop transitions, 12 changer transitions 29/165 dead transitions. [2022-09-20 22:54:19,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 165 transitions, 1311 flow [2022-09-20 22:54:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:54:19,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:54:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1144 transitions. [2022-09-20 22:54:19,697 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6597462514417531 [2022-09-20 22:54:19,697 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1144 transitions. [2022-09-20 22:54:19,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1144 transitions. [2022-09-20 22:54:19,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:19,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1144 transitions. [2022-09-20 22:54:19,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.29411764705883) internal successors, (1144), 17 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:19,700 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 22:54:19,700 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 22:54:19,700 INFO L175 Difference]: Start difference. First operand has 207 places, 144 transitions, 930 flow. Second operand 17 states and 1144 transitions. [2022-09-20 22:54:19,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 165 transitions, 1311 flow [2022-09-20 22:54:19,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 165 transitions, 1227 flow, removed 30 selfloop flow, removed 7 redundant places. [2022-09-20 22:54:19,709 INFO L231 Difference]: Finished difference. Result has 214 places, 135 transitions, 800 flow [2022-09-20 22:54:19,709 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=800, PETRI_PLACES=214, PETRI_TRANSITIONS=135} [2022-09-20 22:54:19,710 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 123 predicate places. [2022-09-20 22:54:19,710 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 135 transitions, 800 flow [2022-09-20 22:54:19,710 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 22:54:19,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:19,710 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 22:54:19,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-09-20 22:54:19,710 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 22:54:19,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:19,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1962371036, now seen corresponding path program 20 times [2022-09-20 22:54:19,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:19,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385491340] [2022-09-20 22:54:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:19,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:19,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:19,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385491340] [2022-09-20 22:54:19,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385491340] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:19,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:19,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:19,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104731052] [2022-09-20 22:54:19,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:19,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:19,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:19,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:19,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:19,815 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:19,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 135 transitions, 800 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:19,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:19,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:19,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:20,056 INFO L130 PetriNetUnfolder]: 39/270 cut-off events. [2022-09-20 22:54:20,057 INFO L131 PetriNetUnfolder]: For 651/657 co-relation queries the response was YES. [2022-09-20 22:54:20,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 270 events. 39/270 cut-off events. For 651/657 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1058 event pairs, 14 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 954. Up to 107 conditions per place. [2022-09-20 22:54:20,059 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 48 selfloop transitions, 0 changer transitions 41/144 dead transitions. [2022-09-20 22:54:20,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 144 transitions, 1026 flow [2022-09-20 22:54:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:54:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:54:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1198 transitions. [2022-09-20 22:54:20,061 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6525054466230937 [2022-09-20 22:54:20,061 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1198 transitions. [2022-09-20 22:54:20,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1198 transitions. [2022-09-20 22:54:20,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:20,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1198 transitions. [2022-09-20 22:54:20,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.55555555555556) internal successors, (1198), 18 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:20,064 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 22:54:20,065 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 22:54:20,065 INFO L175 Difference]: Start difference. First operand has 214 places, 135 transitions, 800 flow. Second operand 18 states and 1198 transitions. [2022-09-20 22:54:20,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 144 transitions, 1026 flow [2022-09-20 22:54:20,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 144 transitions, 912 flow, removed 26 selfloop flow, removed 22 redundant places. [2022-09-20 22:54:20,071 INFO L231 Difference]: Finished difference. Result has 196 places, 103 transitions, 473 flow [2022-09-20 22:54:20,072 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=473, PETRI_PLACES=196, PETRI_TRANSITIONS=103} [2022-09-20 22:54:20,072 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 105 predicate places. [2022-09-20 22:54:20,072 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 103 transitions, 473 flow [2022-09-20 22:54:20,073 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 22:54:20,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:20,073 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 22:54:20,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-09-20 22:54:20,073 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 22:54:20,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:20,073 INFO L85 PathProgramCache]: Analyzing trace with hash -384512984, now seen corresponding path program 14 times [2022-09-20 22:54:20,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:20,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288269841] [2022-09-20 22:54:20,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:20,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:20,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:20,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288269841] [2022-09-20 22:54:20,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288269841] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:20,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:20,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:20,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8477124] [2022-09-20 22:54:20,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:20,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:20,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:20,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:20,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:20,178 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:20,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 103 transitions, 473 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 22:54:20,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:20,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:20,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:20,459 INFO L130 PetriNetUnfolder]: 36/233 cut-off events. [2022-09-20 22:54:20,459 INFO L131 PetriNetUnfolder]: For 461/462 co-relation queries the response was YES. [2022-09-20 22:54:20,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 233 events. 36/233 cut-off events. For 461/462 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 791 event pairs, 7 based on Foata normal form. 1/231 useless extension candidates. Maximal degree in co-relation 773. Up to 31 conditions per place. [2022-09-20 22:54:20,461 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 39 selfloop transitions, 21 changer transitions 32/147 dead transitions. [2022-09-20 22:54:20,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 147 transitions, 989 flow [2022-09-20 22:54:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 22:54:20,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 22:54:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1406 transitions. [2022-09-20 22:54:20,465 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6563958916900093 [2022-09-20 22:54:20,465 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1406 transitions. [2022-09-20 22:54:20,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1406 transitions. [2022-09-20 22:54:20,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:20,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1406 transitions. [2022-09-20 22:54:20,467 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 22:54:20,468 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 22:54:20,469 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 22:54:20,469 INFO L175 Difference]: Start difference. First operand has 196 places, 103 transitions, 473 flow. Second operand 21 states and 1406 transitions. [2022-09-20 22:54:20,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 147 transitions, 989 flow [2022-09-20 22:54:20,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 147 transitions, 958 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-09-20 22:54:20,474 INFO L231 Difference]: Finished difference. Result has 175 places, 105 transitions, 575 flow [2022-09-20 22:54:20,474 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=448, 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=575, PETRI_PLACES=175, PETRI_TRANSITIONS=105} [2022-09-20 22:54:20,474 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 84 predicate places. [2022-09-20 22:54:20,474 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 105 transitions, 575 flow [2022-09-20 22:54:20,474 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 22:54:20,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:20,475 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 22:54:20,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-09-20 22:54:20,475 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 22:54:20,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash -899752322, now seen corresponding path program 15 times [2022-09-20 22:54:20,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:20,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054637836] [2022-09-20 22:54:20,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:20,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:20,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:20,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054637836] [2022-09-20 22:54:20,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054637836] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:20,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:20,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:20,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519290918] [2022-09-20 22:54:20,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:20,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:20,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:20,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:20,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:20,568 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:20,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 105 transitions, 575 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:20,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:20,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:20,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:20,787 INFO L130 PetriNetUnfolder]: 33/232 cut-off events. [2022-09-20 22:54:20,787 INFO L131 PetriNetUnfolder]: For 966/967 co-relation queries the response was YES. [2022-09-20 22:54:20,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 232 events. 33/232 cut-off events. For 966/967 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 786 event pairs, 3 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 900. Up to 36 conditions per place. [2022-09-20 22:54:20,789 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 39 selfloop transitions, 22 changer transitions 29/145 dead transitions. [2022-09-20 22:54:20,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 145 transitions, 1115 flow [2022-09-20 22:54:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:54:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:54:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1083 transitions. [2022-09-20 22:54:20,792 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6636029411764706 [2022-09-20 22:54:20,792 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1083 transitions. [2022-09-20 22:54:20,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1083 transitions. [2022-09-20 22:54:20,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:20,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1083 transitions. [2022-09-20 22:54:20,794 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 22:54:20,795 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 22:54:20,796 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 22:54:20,796 INFO L175 Difference]: Start difference. First operand has 175 places, 105 transitions, 575 flow. Second operand 16 states and 1083 transitions. [2022-09-20 22:54:20,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 145 transitions, 1115 flow [2022-09-20 22:54:20,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 145 transitions, 974 flow, removed 45 selfloop flow, removed 16 redundant places. [2022-09-20 22:54:20,802 INFO L231 Difference]: Finished difference. Result has 170 places, 110 transitions, 624 flow [2022-09-20 22:54:20,802 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=146, 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=624, PETRI_PLACES=170, PETRI_TRANSITIONS=110} [2022-09-20 22:54:20,803 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2022-09-20 22:54:20,803 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 110 transitions, 624 flow [2022-09-20 22:54:20,804 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 22:54:20,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:20,804 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 22:54:20,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-09-20 22:54:20,804 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 22:54:20,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:20,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2028652570, now seen corresponding path program 16 times [2022-09-20 22:54:20,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:20,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447464081] [2022-09-20 22:54:20,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:20,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:20,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:20,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447464081] [2022-09-20 22:54:20,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447464081] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:20,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:20,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:20,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082041426] [2022-09-20 22:54:20,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:20,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:20,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:20,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:20,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:20,898 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:20,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 110 transitions, 624 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 22:54:20,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:20,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:20,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:21,104 INFO L130 PetriNetUnfolder]: 24/200 cut-off events. [2022-09-20 22:54:21,104 INFO L131 PetriNetUnfolder]: For 628/629 co-relation queries the response was YES. [2022-09-20 22:54:21,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 200 events. 24/200 cut-off events. For 628/629 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 566 event pairs, 3 based on Foata normal form. 1/200 useless extension candidates. Maximal degree in co-relation 724. Up to 30 conditions per place. [2022-09-20 22:54:21,106 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 35 selfloop transitions, 10 changer transitions 34/134 dead transitions. [2022-09-20 22:54:21,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 134 transitions, 941 flow [2022-09-20 22:54:21,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:54:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:54:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1205 transitions. [2022-09-20 22:54:21,108 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.656318082788671 [2022-09-20 22:54:21,108 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1205 transitions. [2022-09-20 22:54:21,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1205 transitions. [2022-09-20 22:54:21,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:21,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1205 transitions. [2022-09-20 22:54:21,109 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 22:54:21,111 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 22:54:21,112 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 22:54:21,112 INFO L175 Difference]: Start difference. First operand has 170 places, 110 transitions, 624 flow. Second operand 18 states and 1205 transitions. [2022-09-20 22:54:21,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 134 transitions, 941 flow [2022-09-20 22:54:21,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 134 transitions, 837 flow, removed 30 selfloop flow, removed 10 redundant places. [2022-09-20 22:54:21,117 INFO L231 Difference]: Finished difference. Result has 177 places, 95 transitions, 424 flow [2022-09-20 22:54:21,117 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=153, 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=424, PETRI_PLACES=177, PETRI_TRANSITIONS=95} [2022-09-20 22:54:21,118 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 86 predicate places. [2022-09-20 22:54:21,118 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 95 transitions, 424 flow [2022-09-20 22:54:21,119 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 22:54:21,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:21,119 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 22:54:21,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-09-20 22:54:21,119 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 22:54:21,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:21,119 INFO L85 PathProgramCache]: Analyzing trace with hash 259936364, now seen corresponding path program 17 times [2022-09-20 22:54:21,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:21,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402616693] [2022-09-20 22:54:21,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:21,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:21,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:21,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:21,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402616693] [2022-09-20 22:54:21,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402616693] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:21,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:21,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:21,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598047944] [2022-09-20 22:54:21,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:21,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:21,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:21,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:21,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:21,214 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:21,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 95 transitions, 424 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 22:54:21,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:21,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:21,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:21,418 INFO L130 PetriNetUnfolder]: 29/207 cut-off events. [2022-09-20 22:54:21,418 INFO L131 PetriNetUnfolder]: For 685/686 co-relation queries the response was YES. [2022-09-20 22:54:21,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 207 events. 29/207 cut-off events. For 685/686 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 609 event pairs, 4 based on Foata normal form. 1/206 useless extension candidates. Maximal degree in co-relation 750. Up to 30 conditions per place. [2022-09-20 22:54:21,419 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 20 changer transitions 27/135 dead transitions. [2022-09-20 22:54:21,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 135 transitions, 944 flow [2022-09-20 22:54:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:54:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:54:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1210 transitions. [2022-09-20 22:54:21,423 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.659041394335512 [2022-09-20 22:54:21,423 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1210 transitions. [2022-09-20 22:54:21,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1210 transitions. [2022-09-20 22:54:21,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:21,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1210 transitions. [2022-09-20 22:54:21,425 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 22:54:21,426 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 22:54:21,427 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 22:54:21,427 INFO L175 Difference]: Start difference. First operand has 177 places, 95 transitions, 424 flow. Second operand 18 states and 1210 transitions. [2022-09-20 22:54:21,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 135 transitions, 944 flow [2022-09-20 22:54:21,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 135 transitions, 798 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-09-20 22:54:21,432 INFO L231 Difference]: Finished difference. Result has 162 places, 104 transitions, 537 flow [2022-09-20 22:54:21,432 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=136, 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=537, PETRI_PLACES=162, PETRI_TRANSITIONS=104} [2022-09-20 22:54:21,432 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 71 predicate places. [2022-09-20 22:54:21,432 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 104 transitions, 537 flow [2022-09-20 22:54:21,433 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 22:54:21,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:21,433 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 22:54:21,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-09-20 22:54:21,433 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 22:54:21,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash -552277470, now seen corresponding path program 18 times [2022-09-20 22:54:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:21,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768625694] [2022-09-20 22:54:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:21,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:21,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:21,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768625694] [2022-09-20 22:54:21,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768625694] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:21,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:21,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528334794] [2022-09-20 22:54:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:21,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:21,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:21,521 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:21,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 104 transitions, 537 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 22:54:21,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:21,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:21,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:21,738 INFO L130 PetriNetUnfolder]: 25/211 cut-off events. [2022-09-20 22:54:21,739 INFO L131 PetriNetUnfolder]: For 495/496 co-relation queries the response was YES. [2022-09-20 22:54:21,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 211 events. 25/211 cut-off events. For 495/496 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 633 event pairs, 0 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 709. Up to 30 conditions per place. [2022-09-20 22:54:21,741 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 34 selfloop transitions, 22 changer transitions 28/139 dead transitions. [2022-09-20 22:54:21,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 139 transitions, 991 flow [2022-09-20 22:54:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:54:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:54:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1146 transitions. [2022-09-20 22:54:21,742 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6608996539792388 [2022-09-20 22:54:21,742 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1146 transitions. [2022-09-20 22:54:21,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1146 transitions. [2022-09-20 22:54:21,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:21,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1146 transitions. [2022-09-20 22:54:21,744 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 22:54:21,745 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 22:54:21,746 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 22:54:21,746 INFO L175 Difference]: Start difference. First operand has 162 places, 104 transitions, 537 flow. Second operand 17 states and 1146 transitions. [2022-09-20 22:54:21,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 139 transitions, 991 flow [2022-09-20 22:54:21,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 139 transitions, 910 flow, removed 36 selfloop flow, removed 5 redundant places. [2022-09-20 22:54:21,751 INFO L231 Difference]: Finished difference. Result has 174 places, 108 transitions, 619 flow [2022-09-20 22:54:21,751 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=148, 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=619, PETRI_PLACES=174, PETRI_TRANSITIONS=108} [2022-09-20 22:54:21,751 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 83 predicate places. [2022-09-20 22:54:21,751 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 108 transitions, 619 flow [2022-09-20 22:54:21,751 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 22:54:21,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:21,752 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 22:54:21,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-09-20 22:54:21,752 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 22:54:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash 425020222, now seen corresponding path program 19 times [2022-09-20 22:54:21,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:21,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554401565] [2022-09-20 22:54:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:21,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:21,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:21,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554401565] [2022-09-20 22:54:21,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554401565] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:21,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:21,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:21,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327200366] [2022-09-20 22:54:21,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:21,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:21,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:21,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:21,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:21,843 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:21,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 108 transitions, 619 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 22:54:21,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:21,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:21,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:22,042 INFO L130 PetriNetUnfolder]: 19/194 cut-off events. [2022-09-20 22:54:22,042 INFO L131 PetriNetUnfolder]: For 448/449 co-relation queries the response was YES. [2022-09-20 22:54:22,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 194 events. 19/194 cut-off events. For 448/449 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 534 event pairs, 0 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 659. Up to 30 conditions per place. [2022-09-20 22:54:22,044 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 12 changer transitions 33/133 dead transitions. [2022-09-20 22:54:22,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 133 transitions, 960 flow [2022-09-20 22:54:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:54:22,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:54:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1141 transitions. [2022-09-20 22:54:22,046 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6580161476355249 [2022-09-20 22:54:22,046 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1141 transitions. [2022-09-20 22:54:22,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1141 transitions. [2022-09-20 22:54:22,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:22,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1141 transitions. [2022-09-20 22:54:22,048 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 22:54:22,049 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 22:54:22,050 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 22:54:22,050 INFO L175 Difference]: Start difference. First operand has 174 places, 108 transitions, 619 flow. Second operand 17 states and 1141 transitions. [2022-09-20 22:54:22,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 133 transitions, 960 flow [2022-09-20 22:54:22,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 133 transitions, 859 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-09-20 22:54:22,056 INFO L231 Difference]: Finished difference. Result has 180 places, 99 transitions, 474 flow [2022-09-20 22:54:22,056 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=157, 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=474, PETRI_PLACES=180, PETRI_TRANSITIONS=99} [2022-09-20 22:54:22,056 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 89 predicate places. [2022-09-20 22:54:22,056 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 99 transitions, 474 flow [2022-09-20 22:54:22,057 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 22:54:22,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:22,057 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 22:54:22,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-09-20 22:54:22,057 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 22:54:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:22,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1378187606, now seen corresponding path program 20 times [2022-09-20 22:54:22,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:22,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494246488] [2022-09-20 22:54:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:22,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:22,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:22,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494246488] [2022-09-20 22:54:22,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494246488] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:22,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:22,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:54:22,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854506920] [2022-09-20 22:54:22,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:22,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:54:22,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:22,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:54:22,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:54:22,157 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-09-20 22:54:22,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 99 transitions, 474 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 22:54:22,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:22,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-09-20 22:54:22,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:22,335 INFO L130 PetriNetUnfolder]: 11/126 cut-off events. [2022-09-20 22:54:22,335 INFO L131 PetriNetUnfolder]: For 251/252 co-relation queries the response was YES. [2022-09-20 22:54:22,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 126 events. 11/126 cut-off events. For 251/252 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 222 event pairs, 0 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 389. Up to 12 conditions per place. [2022-09-20 22:54:22,336 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 0 selfloop transitions, 0 changer transitions 94/94 dead transitions. [2022-09-20 22:54:22,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 94 transitions, 586 flow [2022-09-20 22:54:22,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:54:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:54:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1178 transitions. [2022-09-20 22:54:22,337 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6416122004357299 [2022-09-20 22:54:22,337 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1178 transitions. [2022-09-20 22:54:22,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1178 transitions. [2022-09-20 22:54:22,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:22,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1178 transitions. [2022-09-20 22:54:22,338 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 22:54:22,339 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 22:54:22,340 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 22:54:22,340 INFO L175 Difference]: Start difference. First operand has 180 places, 99 transitions, 474 flow. Second operand 18 states and 1178 transitions. [2022-09-20 22:54:22,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 94 transitions, 586 flow [2022-09-20 22:54:22,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 94 transitions, 476 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-09-20 22:54:22,342 INFO L231 Difference]: Finished difference. Result has 149 places, 0 transitions, 0 flow [2022-09-20 22:54:22,342 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=132, 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=149, PETRI_TRANSITIONS=0} [2022-09-20 22:54:22,343 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 58 predicate places. [2022-09-20 22:54:22,343 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 0 transitions, 0 flow [2022-09-20 22:54:22,343 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 22:54:22,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-09-20 22:54:22,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-09-20 22:54:22,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-09-20 22:54:22,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-09-20 22:54:22,348 INFO L444 BasicCegarLoop]: Path program histogram: [20, 20, 2, 2, 1, 1, 1] [2022-09-20 22:54:22,350 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 22:54:22,350 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 22:54:22,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 10:54:22 BasicIcfg [2022-09-20 22:54:22,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 22:54:22,357 INFO L158 Benchmark]: Toolchain (without parser) took 20233.72ms. Allocated memory was 188.7MB in the beginning and 330.3MB in the end (delta: 141.6MB). Free memory was 133.8MB in the beginning and 279.8MB in the end (delta: -146.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 22:54:22,357 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 22:54:22,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.13ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 167.5MB in the beginning and 200.5MB in the end (delta: -33.0MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. [2022-09-20 22:54:22,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.42ms. Allocated memory is still 226.5MB. Free memory was 200.5MB in the beginning and 198.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 22:54:22,358 INFO L158 Benchmark]: Boogie Preprocessor took 24.97ms. Allocated memory is still 226.5MB. Free memory was 198.8MB in the beginning and 197.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 22:54:22,358 INFO L158 Benchmark]: RCFGBuilder took 264.92ms. Allocated memory is still 226.5MB. Free memory was 197.8MB in the beginning and 185.5MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-09-20 22:54:22,358 INFO L158 Benchmark]: TraceAbstraction took 19590.17ms. Allocated memory was 226.5MB in the beginning and 330.3MB in the end (delta: 103.8MB). Free memory was 184.8MB in the beginning and 279.8MB in the end (delta: -95.0MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2022-09-20 22:54:22,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 292.13ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 167.5MB in the beginning and 200.5MB in the end (delta: -33.0MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.42ms. Allocated memory is still 226.5MB. Free memory was 200.5MB in the beginning and 198.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.97ms. Allocated memory is still 226.5MB. Free memory was 198.8MB in the beginning and 197.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 264.92ms. Allocated memory is still 226.5MB. Free memory was 197.8MB in the beginning and 185.5MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 19590.17ms. Allocated memory was 226.5MB in the beginning and 330.3MB in the end (delta: 103.8MB). Free memory was 184.8MB in the beginning and 279.8MB in the end (delta: -95.0MB). Peak memory consumption was 9.5MB. 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: 19.5s, OverallIterations: 47, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 13.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1903 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1903 mSDsluCounter, 9536 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9398 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7845 IncrementalHoareTripleChecker+Invalid, 7879 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 1804 mSDtfsCounter, 7845 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1012 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 869 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3580 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1332occurred in iteration=25, 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, 0.6s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 3611 NumberOfCodeBlocks, 3611 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3564 ConstructedInterpolants, 0 QuantifiedInterpolants, 15189 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 22:54:22,396 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...