/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-name-comparator-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:49:48,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:49:48,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:49:48,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:49:48,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:49:48,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:49:48,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:49:48,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:49:48,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:49:48,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:49:48,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:49:48,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:49:48,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:49:48,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:49:48,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:49:48,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:49:48,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:49:48,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:49:48,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:49:48,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:49:48,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:49:48,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:49:48,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:49:48,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:49:48,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 22:49:48,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 22:49:48,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 22:49:48,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 22:49:48,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 22:49:48,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 22:49:48,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:49:48,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:49:48,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:49:48,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:49:48,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:49:48,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:49:48,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:49:48,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:49:48,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:49:48,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:49:48,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:49:48,698 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 22:49:48,711 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:49:48,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:49:48,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:49:48,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:49:48,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:49:48,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:49:48,712 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:49:48,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:49:48,713 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:49:48,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:49:48,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:49:48,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:49:48,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:49:48,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:49:48,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:49:48,713 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:49:48,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:49:48,713 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:49:48,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:49:48,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:49:48,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:49:48,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:49:48,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:49:48,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:49:48,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:49:48,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:49:48,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:49:48,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:49:48,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:49:48,714 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:49:48,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:49:48,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:49:48,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:49:48,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:49:48,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:49:48,877 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:49:48,883 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:49:48,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c [2022-09-20 22:49:48,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1e84a09/2a81e707c61f494ba1c3943c6882bbd2/FLAG0d4c746b1 [2022-09-20 22:49:49,291 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:49:49,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c [2022-09-20 22:49:49,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1e84a09/2a81e707c61f494ba1c3943c6882bbd2/FLAG0d4c746b1 [2022-09-20 22:49:49,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1e84a09/2a81e707c61f494ba1c3943c6882bbd2 [2022-09-20 22:49:49,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:49:49,311 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:49:49,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:49:49,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:49:49,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:49:49,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:49:49" (1/1) ... [2022-09-20 22:49:49,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d75511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49, skipping insertion in model container [2022-09-20 22:49:49,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:49:49" (1/1) ... [2022-09-20 22:49:49,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:49:49,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:49:49,522 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-name-comparator-symm.wvr.c[3856,3869] [2022-09-20 22:49:49,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:49:49,539 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:49:49,570 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-name-comparator-symm.wvr.c[3856,3869] [2022-09-20 22:49:49,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:49:49,584 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:49:49,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49 WrapperNode [2022-09-20 22:49:49,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:49:49,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:49:49,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:49:49,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:49:49,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49" (1/1) ... [2022-09-20 22:49:49,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49" (1/1) ... [2022-09-20 22:49:49,619 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 278 [2022-09-20 22:49:49,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:49:49,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:49:49,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:49:49,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:49:49,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49" (1/1) ... [2022-09-20 22:49:49,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49" (1/1) ... [2022-09-20 22:49:49,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49" (1/1) ... [2022-09-20 22:49:49,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49" (1/1) ... [2022-09-20 22:49:49,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49" (1/1) ... [2022-09-20 22:49:49,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49" (1/1) ... [2022-09-20 22:49:49,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49" (1/1) ... [2022-09-20 22:49:49,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:49:49,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:49:49,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:49:49,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:49:49,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49" (1/1) ... [2022-09-20 22:49:49,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:49:49,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:49:49,660 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 22:49:49,674 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 22:49:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:49:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:49:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:49:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 22:49:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 22:49:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 22:49:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 22:49:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 22:49:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:49:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 22:49:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:49:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:49:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:49:49,692 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 22:49:49,753 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:49:49,754 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:49:50,054 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:49:50,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:49:50,065 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-20 22:49:50,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:49:50 BoogieIcfgContainer [2022-09-20 22:49:50,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:49:50,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:49:50,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:49:50,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:49:50,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:49:49" (1/3) ... [2022-09-20 22:49:50,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3560a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:49:50, skipping insertion in model container [2022-09-20 22:49:50,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:49:49" (2/3) ... [2022-09-20 22:49:50,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3560a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:49:50, skipping insertion in model container [2022-09-20 22:49:50,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:49:50" (3/3) ... [2022-09-20 22:49:50,081 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2022-09-20 22:49:50,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:49:50,096 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 22:49:50,096 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:49:50,179 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 22:49:50,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 353 transitions, 722 flow [2022-09-20 22:49:50,345 INFO L130 PetriNetUnfolder]: 35/351 cut-off events. [2022-09-20 22:49:50,345 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 22:49:50,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 351 events. 35/351 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 736 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 211. Up to 2 conditions per place. [2022-09-20 22:49:50,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 353 transitions, 722 flow [2022-09-20 22:49:50,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 342 transitions, 696 flow [2022-09-20 22:49:50,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:49:50,379 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;@4456c5a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:49:50,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 22:49:50,425 INFO L130 PetriNetUnfolder]: 35/341 cut-off events. [2022-09-20 22:49:50,425 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 22:49:50,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:50,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:50,426 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 22:49:50,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:50,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1404666152, now seen corresponding path program 1 times [2022-09-20 22:49:50,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:50,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261641419] [2022-09-20 22:49:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:50,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:50,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:50,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261641419] [2022-09-20 22:49:50,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261641419] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:50,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:50,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 22:49:50,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747591468] [2022-09-20 22:49:50,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:50,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 22:49:50,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:50,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 22:49:50,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 22:49:50,689 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 353 [2022-09-20 22:49:50,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 342 transitions, 696 flow. Second operand has 2 states, 2 states have (on average 337.5) internal successors, (675), 2 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:50,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:50,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 353 [2022-09-20 22:49:50,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:50,796 INFO L130 PetriNetUnfolder]: 21/328 cut-off events. [2022-09-20 22:49:50,796 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-09-20 22:49:50,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 328 events. 21/328 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 711 event pairs, 0 based on Foata normal form. 17/313 useless extension candidates. Maximal degree in co-relation 202. Up to 5 conditions per place. [2022-09-20 22:49:50,800 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 4 selfloop transitions, 0 changer transitions 3/328 dead transitions. [2022-09-20 22:49:50,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 328 transitions, 676 flow [2022-09-20 22:49:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 22:49:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 22:49:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 686 transitions. [2022-09-20 22:49:50,814 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9716713881019831 [2022-09-20 22:49:50,815 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 686 transitions. [2022-09-20 22:49:50,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 686 transitions. [2022-09-20 22:49:50,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:50,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 686 transitions. [2022-09-20 22:49:50,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 343.0) internal successors, (686), 2 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:50,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:50,832 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:50,833 INFO L175 Difference]: Start difference. First operand has 314 places, 342 transitions, 696 flow. Second operand 2 states and 686 transitions. [2022-09-20 22:49:50,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 328 transitions, 676 flow [2022-09-20 22:49:50,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 328 transitions, 668 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 22:49:50,844 INFO L231 Difference]: Finished difference. Result has 311 places, 325 transitions, 654 flow [2022-09-20 22:49:50,846 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=654, PETRI_PLACES=311, PETRI_TRANSITIONS=325} [2022-09-20 22:49:50,850 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, -3 predicate places. [2022-09-20 22:49:50,851 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 325 transitions, 654 flow [2022-09-20 22:49:50,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 337.5) internal successors, (675), 2 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:50,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:50,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:50,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:49:50,852 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 22:49:50,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:50,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1980844539, now seen corresponding path program 1 times [2022-09-20 22:49:50,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:50,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593002285] [2022-09-20 22:49:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:50,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:51,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:51,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593002285] [2022-09-20 22:49:51,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593002285] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:51,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:51,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:49:51,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079373549] [2022-09-20 22:49:51,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:51,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:49:51,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:51,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:49:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:49:51,034 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 353 [2022-09-20 22:49:51,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 325 transitions, 654 flow. Second operand has 5 states, 5 states have (on average 318.6) internal successors, (1593), 5 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:51,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:51,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 353 [2022-09-20 22:49:51,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:51,166 INFO L130 PetriNetUnfolder]: 61/694 cut-off events. [2022-09-20 22:49:51,167 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 22:49:51,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 694 events. 61/694 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3437 event pairs, 9 based on Foata normal form. 0/622 useless extension candidates. Maximal degree in co-relation 784. Up to 45 conditions per place. [2022-09-20 22:49:51,175 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 30 selfloop transitions, 9 changer transitions 0/342 dead transitions. [2022-09-20 22:49:51,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 342 transitions, 772 flow [2022-09-20 22:49:51,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 22:49:51,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 22:49:51,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1937 transitions. [2022-09-20 22:49:51,182 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9145420207743153 [2022-09-20 22:49:51,182 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1937 transitions. [2022-09-20 22:49:51,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1937 transitions. [2022-09-20 22:49:51,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:51,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1937 transitions. [2022-09-20 22:49:51,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 322.8333333333333) internal successors, (1937), 6 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:51,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:51,191 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:51,191 INFO L175 Difference]: Start difference. First operand has 311 places, 325 transitions, 654 flow. Second operand 6 states and 1937 transitions. [2022-09-20 22:49:51,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 342 transitions, 772 flow [2022-09-20 22:49:51,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 342 transitions, 772 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:49:51,198 INFO L231 Difference]: Finished difference. Result has 317 places, 331 transitions, 713 flow [2022-09-20 22:49:51,198 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=317, PETRI_TRANSITIONS=331} [2022-09-20 22:49:51,199 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 3 predicate places. [2022-09-20 22:49:51,199 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 331 transitions, 713 flow [2022-09-20 22:49:51,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 318.6) internal successors, (1593), 5 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:51,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:51,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:51,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:49:51,201 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 22:49:51,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:51,201 INFO L85 PathProgramCache]: Analyzing trace with hash -336867899, now seen corresponding path program 1 times [2022-09-20 22:49:51,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:51,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791235010] [2022-09-20 22:49:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:51,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:51,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:51,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791235010] [2022-09-20 22:49:51,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791235010] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:51,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:51,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 22:49:51,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866684102] [2022-09-20 22:49:51,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:51,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 22:49:51,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:51,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 22:49:51,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 22:49:51,290 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 353 [2022-09-20 22:49:51,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 331 transitions, 713 flow. Second operand has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:51,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:51,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 353 [2022-09-20 22:49:51,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:51,465 INFO L130 PetriNetUnfolder]: 84/798 cut-off events. [2022-09-20 22:49:51,465 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-09-20 22:49:51,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 798 events. 84/798 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4280 event pairs, 15 based on Foata normal form. 0/719 useless extension candidates. Maximal degree in co-relation 1015. Up to 59 conditions per place. [2022-09-20 22:49:51,471 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 27 selfloop transitions, 11 changer transitions 0/346 dead transitions. [2022-09-20 22:49:51,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 346 transitions, 823 flow [2022-09-20 22:49:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 22:49:51,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 22:49:51,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1299 transitions. [2022-09-20 22:49:51,474 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.919971671388102 [2022-09-20 22:49:51,474 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1299 transitions. [2022-09-20 22:49:51,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1299 transitions. [2022-09-20 22:49:51,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:51,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1299 transitions. [2022-09-20 22:49:51,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 324.75) internal successors, (1299), 4 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:51,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:51,480 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:51,481 INFO L175 Difference]: Start difference. First operand has 317 places, 331 transitions, 713 flow. Second operand 4 states and 1299 transitions. [2022-09-20 22:49:51,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 346 transitions, 823 flow [2022-09-20 22:49:51,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 346 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:49:51,487 INFO L231 Difference]: Finished difference. Result has 322 places, 337 transitions, 778 flow [2022-09-20 22:49:51,488 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=778, PETRI_PLACES=322, PETRI_TRANSITIONS=337} [2022-09-20 22:49:51,490 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 8 predicate places. [2022-09-20 22:49:51,490 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 337 transitions, 778 flow [2022-09-20 22:49:51,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:51,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:51,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:51,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:49:51,491 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 22:49:51,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:51,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1531803009, now seen corresponding path program 1 times [2022-09-20 22:49:51,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:51,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588791872] [2022-09-20 22:49:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:51,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:51,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:51,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588791872] [2022-09-20 22:49:51,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588791872] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:51,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:51,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:49:51,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618413176] [2022-09-20 22:49:51,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:51,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:49:51,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:51,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:49:51,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:49:51,566 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 353 [2022-09-20 22:49:51,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 337 transitions, 778 flow. Second operand has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:51,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:51,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 353 [2022-09-20 22:49:51,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:52,323 INFO L130 PetriNetUnfolder]: 1053/6467 cut-off events. [2022-09-20 22:49:52,324 INFO L131 PetriNetUnfolder]: For 396/408 co-relation queries the response was YES. [2022-09-20 22:49:52,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8574 conditions, 6467 events. 1053/6467 cut-off events. For 396/408 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 69256 event pairs, 438 based on Foata normal form. 0/5668 useless extension candidates. Maximal degree in co-relation 8564. Up to 906 conditions per place. [2022-09-20 22:49:52,367 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 57 selfloop transitions, 4 changer transitions 0/363 dead transitions. [2022-09-20 22:49:52,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 363 transitions, 965 flow [2022-09-20 22:49:52,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:49:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:49:52,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 975 transitions. [2022-09-20 22:49:52,370 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9206798866855525 [2022-09-20 22:49:52,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 975 transitions. [2022-09-20 22:49:52,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 975 transitions. [2022-09-20 22:49:52,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:52,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 975 transitions. [2022-09-20 22:49:52,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:52,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:52,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:52,374 INFO L175 Difference]: Start difference. First operand has 322 places, 337 transitions, 778 flow. Second operand 3 states and 975 transitions. [2022-09-20 22:49:52,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 363 transitions, 965 flow [2022-09-20 22:49:52,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 363 transitions, 965 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:49:52,383 INFO L231 Difference]: Finished difference. Result has 326 places, 341 transitions, 818 flow [2022-09-20 22:49:52,383 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=818, PETRI_PLACES=326, PETRI_TRANSITIONS=341} [2022-09-20 22:49:52,384 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 12 predicate places. [2022-09-20 22:49:52,385 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 341 transitions, 818 flow [2022-09-20 22:49:52,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:52,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:52,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:52,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:49:52,389 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 22:49:52,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:52,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1219089197, now seen corresponding path program 1 times [2022-09-20 22:49:52,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:52,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136331109] [2022-09-20 22:49:52,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:52,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:52,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:52,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136331109] [2022-09-20 22:49:52,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136331109] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:52,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:52,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:49:52,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88823984] [2022-09-20 22:49:52,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:52,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:49:52,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:52,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:49:52,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:49:52,461 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 353 [2022-09-20 22:49:52,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 341 transitions, 818 flow. Second operand has 5 states, 5 states have (on average 318.6) internal successors, (1593), 5 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:52,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:52,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 353 [2022-09-20 22:49:52,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:52,878 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1054] thread1EXIT-->L109-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][208], [Black: 347#true, Black: 352#(and (= ~break_6~0 0) (= |thread1Thread1of1ForFork0_#t~ite2#1| 0)), 157#L109-2true, 349#(= ~break_6~0 0), 148#L85-10true, 328#true, Black: 358#true, 364#true, Black: 337#(and (= |thread1Thread1of1ForFork0_#t~ite1#1| 0) (= ~result_3~0 0)), Black: 334#(= ~result_3~0 0), Black: 340#(and (= 0 |thread1Thread1of1ForFork0_#t~ite11#1|) (= ~result_3~0 0)), Black: 333#(= |thread1Thread1of1ForFork0_#t~ite1#1| 0), 360#(not (= (+ (* (- 1) ~name_2~0) ~name_1~0) 0))]) [2022-09-20 22:49:52,878 INFO L383 tUnfolder$Statistics]: this new event has 164 ancestors and is cut-off event [2022-09-20 22:49:52,878 INFO L386 tUnfolder$Statistics]: existing Event has 164 ancestors and is cut-off event [2022-09-20 22:49:52,878 INFO L386 tUnfolder$Statistics]: existing Event has 194 ancestors and is cut-off event [2022-09-20 22:49:52,878 INFO L386 tUnfolder$Statistics]: existing Event has 164 ancestors and is cut-off event [2022-09-20 22:49:52,881 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1054] thread1EXIT-->L109-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][208], [111#L85-11true, Black: 347#true, Black: 352#(and (= ~break_6~0 0) (= |thread1Thread1of1ForFork0_#t~ite2#1| 0)), 157#L109-2true, 349#(= ~break_6~0 0), 328#true, Black: 358#true, 364#true, Black: 337#(and (= |thread1Thread1of1ForFork0_#t~ite1#1| 0) (= ~result_3~0 0)), Black: 334#(= ~result_3~0 0), Black: 340#(and (= 0 |thread1Thread1of1ForFork0_#t~ite11#1|) (= ~result_3~0 0)), Black: 333#(= |thread1Thread1of1ForFork0_#t~ite1#1| 0), 360#(not (= (+ (* (- 1) ~name_2~0) ~name_1~0) 0))]) [2022-09-20 22:49:52,882 INFO L383 tUnfolder$Statistics]: this new event has 165 ancestors and is cut-off event [2022-09-20 22:49:52,882 INFO L386 tUnfolder$Statistics]: existing Event has 187 ancestors and is cut-off event [2022-09-20 22:49:52,882 INFO L386 tUnfolder$Statistics]: existing Event has 165 ancestors and is cut-off event [2022-09-20 22:49:52,882 INFO L386 tUnfolder$Statistics]: existing Event has 165 ancestors and is cut-off event [2022-09-20 22:49:52,886 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1054] thread1EXIT-->L109-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][208], [Black: 347#true, Black: 352#(and (= ~break_6~0 0) (= |thread1Thread1of1ForFork0_#t~ite2#1| 0)), 157#L109-2true, 349#(= ~break_6~0 0), 328#true, Black: 358#true, 364#true, Black: 337#(and (= |thread1Thread1of1ForFork0_#t~ite1#1| 0) (= ~result_3~0 0)), Black: 334#(= ~result_3~0 0), Black: 340#(and (= 0 |thread1Thread1of1ForFork0_#t~ite11#1|) (= ~result_3~0 0)), Black: 333#(= |thread1Thread1of1ForFork0_#t~ite1#1| 0), 360#(not (= (+ (* (- 1) ~name_2~0) ~name_1~0) 0)), 89#L85-12true]) [2022-09-20 22:49:52,886 INFO L383 tUnfolder$Statistics]: this new event has 166 ancestors and is cut-off event [2022-09-20 22:49:52,886 INFO L386 tUnfolder$Statistics]: existing Event has 166 ancestors and is cut-off event [2022-09-20 22:49:52,886 INFO L386 tUnfolder$Statistics]: existing Event has 166 ancestors and is cut-off event [2022-09-20 22:49:52,886 INFO L386 tUnfolder$Statistics]: existing Event has 188 ancestors and is cut-off event [2022-09-20 22:49:52,891 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1054] thread1EXIT-->L109-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][208], [Black: 347#true, Black: 352#(and (= ~break_6~0 0) (= |thread1Thread1of1ForFork0_#t~ite2#1| 0)), 44#L77-5true, 157#L109-2true, 349#(= ~break_6~0 0), 328#true, Black: 358#true, 364#true, Black: 337#(and (= |thread1Thread1of1ForFork0_#t~ite1#1| 0) (= ~result_3~0 0)), Black: 334#(= ~result_3~0 0), Black: 340#(and (= 0 |thread1Thread1of1ForFork0_#t~ite11#1|) (= ~result_3~0 0)), 360#(not (= (+ (* (- 1) ~name_2~0) ~name_1~0) 0)), Black: 333#(= |thread1Thread1of1ForFork0_#t~ite1#1| 0)]) [2022-09-20 22:49:52,891 INFO L383 tUnfolder$Statistics]: this new event has 168 ancestors and is cut-off event [2022-09-20 22:49:52,891 INFO L386 tUnfolder$Statistics]: existing Event has 168 ancestors and is cut-off event [2022-09-20 22:49:52,891 INFO L386 tUnfolder$Statistics]: existing Event has 168 ancestors and is cut-off event [2022-09-20 22:49:52,891 INFO L386 tUnfolder$Statistics]: existing Event has 168 ancestors and is cut-off event [2022-09-20 22:49:52,906 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1054] thread1EXIT-->L109-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][208], [Black: 349#(= ~break_6~0 0), Black: 352#(and (= ~break_6~0 0) (= |thread1Thread1of1ForFork0_#t~ite2#1| 0)), 157#L109-2true, 148#L85-10true, 328#true, Black: 358#true, 364#true, 347#true, Black: 337#(and (= |thread1Thread1of1ForFork0_#t~ite1#1| 0) (= ~result_3~0 0)), Black: 334#(= ~result_3~0 0), Black: 340#(and (= 0 |thread1Thread1of1ForFork0_#t~ite11#1|) (= ~result_3~0 0)), Black: 333#(= |thread1Thread1of1ForFork0_#t~ite1#1| 0), 360#(not (= (+ (* (- 1) ~name_2~0) ~name_1~0) 0))]) [2022-09-20 22:49:52,906 INFO L383 tUnfolder$Statistics]: this new event has 172 ancestors and is cut-off event [2022-09-20 22:49:52,906 INFO L386 tUnfolder$Statistics]: existing Event has 172 ancestors and is cut-off event [2022-09-20 22:49:52,906 INFO L386 tUnfolder$Statistics]: existing Event has 172 ancestors and is cut-off event [2022-09-20 22:49:52,906 INFO L386 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-09-20 22:49:52,909 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1054] thread1EXIT-->L109-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][208], [111#L85-11true, Black: 349#(= ~break_6~0 0), Black: 352#(and (= ~break_6~0 0) (= |thread1Thread1of1ForFork0_#t~ite2#1| 0)), 157#L109-2true, 328#true, Black: 358#true, 364#true, 347#true, Black: 337#(and (= |thread1Thread1of1ForFork0_#t~ite1#1| 0) (= ~result_3~0 0)), Black: 334#(= ~result_3~0 0), Black: 340#(and (= 0 |thread1Thread1of1ForFork0_#t~ite11#1|) (= ~result_3~0 0)), Black: 333#(= |thread1Thread1of1ForFork0_#t~ite1#1| 0), 360#(not (= (+ (* (- 1) ~name_2~0) ~name_1~0) 0))]) [2022-09-20 22:49:52,909 INFO L383 tUnfolder$Statistics]: this new event has 173 ancestors and is cut-off event [2022-09-20 22:49:52,909 INFO L386 tUnfolder$Statistics]: existing Event has 195 ancestors and is cut-off event [2022-09-20 22:49:52,909 INFO L386 tUnfolder$Statistics]: existing Event has 173 ancestors and is cut-off event [2022-09-20 22:49:52,909 INFO L386 tUnfolder$Statistics]: existing Event has 173 ancestors and is cut-off event [2022-09-20 22:49:52,912 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1054] thread1EXIT-->L109-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][208], [Black: 349#(= ~break_6~0 0), Black: 352#(and (= ~break_6~0 0) (= |thread1Thread1of1ForFork0_#t~ite2#1| 0)), 157#L109-2true, 328#true, Black: 358#true, 364#true, 347#true, Black: 337#(and (= |thread1Thread1of1ForFork0_#t~ite1#1| 0) (= ~result_3~0 0)), Black: 334#(= ~result_3~0 0), Black: 340#(and (= 0 |thread1Thread1of1ForFork0_#t~ite11#1|) (= ~result_3~0 0)), Black: 333#(= |thread1Thread1of1ForFork0_#t~ite1#1| 0), 360#(not (= (+ (* (- 1) ~name_2~0) ~name_1~0) 0)), 89#L85-12true]) [2022-09-20 22:49:52,912 INFO L383 tUnfolder$Statistics]: this new event has 174 ancestors and is cut-off event [2022-09-20 22:49:52,912 INFO L386 tUnfolder$Statistics]: existing Event has 174 ancestors and is cut-off event [2022-09-20 22:49:52,912 INFO L386 tUnfolder$Statistics]: existing Event has 196 ancestors and is cut-off event [2022-09-20 22:49:52,912 INFO L386 tUnfolder$Statistics]: existing Event has 174 ancestors and is cut-off event [2022-09-20 22:49:52,915 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1054] thread1EXIT-->L109-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][208], [Black: 349#(= ~break_6~0 0), Black: 352#(and (= ~break_6~0 0) (= |thread1Thread1of1ForFork0_#t~ite2#1| 0)), 44#L77-5true, 157#L109-2true, 328#true, Black: 358#true, 364#true, 347#true, Black: 337#(and (= |thread1Thread1of1ForFork0_#t~ite1#1| 0) (= ~result_3~0 0)), Black: 334#(= ~result_3~0 0), Black: 340#(and (= 0 |thread1Thread1of1ForFork0_#t~ite11#1|) (= ~result_3~0 0)), 360#(not (= (+ (* (- 1) ~name_2~0) ~name_1~0) 0)), Black: 333#(= |thread1Thread1of1ForFork0_#t~ite1#1| 0)]) [2022-09-20 22:49:52,915 INFO L383 tUnfolder$Statistics]: this new event has 176 ancestors and is cut-off event [2022-09-20 22:49:52,916 INFO L386 tUnfolder$Statistics]: existing Event has 176 ancestors and is cut-off event [2022-09-20 22:49:52,916 INFO L386 tUnfolder$Statistics]: existing Event has 176 ancestors and is cut-off event [2022-09-20 22:49:52,916 INFO L386 tUnfolder$Statistics]: existing Event has 176 ancestors and is cut-off event [2022-09-20 22:49:52,917 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1054] thread1EXIT-->L109-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][208], [Black: 347#true, Black: 352#(and (= ~break_6~0 0) (= |thread1Thread1of1ForFork0_#t~ite2#1| 0)), 157#L109-2true, 349#(= ~break_6~0 0), 328#true, Black: 358#true, 364#true, 143#L79-5true, Black: 337#(and (= |thread1Thread1of1ForFork0_#t~ite1#1| 0) (= ~result_3~0 0)), Black: 334#(= ~result_3~0 0), Black: 340#(and (= 0 |thread1Thread1of1ForFork0_#t~ite11#1|) (= ~result_3~0 0)), 360#(not (= (+ (* (- 1) ~name_2~0) ~name_1~0) 0)), Black: 333#(= |thread1Thread1of1ForFork0_#t~ite1#1| 0)]) [2022-09-20 22:49:52,917 INFO L383 tUnfolder$Statistics]: this new event has 176 ancestors and is cut-off event [2022-09-20 22:49:52,917 INFO L386 tUnfolder$Statistics]: existing Event has 176 ancestors and is cut-off event [2022-09-20 22:49:52,917 INFO L386 tUnfolder$Statistics]: existing Event has 176 ancestors and is cut-off event [2022-09-20 22:49:52,917 INFO L386 tUnfolder$Statistics]: existing Event has 176 ancestors and is cut-off event [2022-09-20 22:49:52,931 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1054] thread1EXIT-->L109-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][208], [Black: 349#(= ~break_6~0 0), Black: 352#(and (= ~break_6~0 0) (= |thread1Thread1of1ForFork0_#t~ite2#1| 0)), 157#L109-2true, 328#true, Black: 358#true, 364#true, 347#true, 143#L79-5true, Black: 337#(and (= |thread1Thread1of1ForFork0_#t~ite1#1| 0) (= ~result_3~0 0)), Black: 334#(= ~result_3~0 0), Black: 340#(and (= 0 |thread1Thread1of1ForFork0_#t~ite11#1|) (= ~result_3~0 0)), 360#(not (= (+ (* (- 1) ~name_2~0) ~name_1~0) 0)), Black: 333#(= |thread1Thread1of1ForFork0_#t~ite1#1| 0)]) [2022-09-20 22:49:52,931 INFO L383 tUnfolder$Statistics]: this new event has 184 ancestors and is cut-off event [2022-09-20 22:49:52,931 INFO L386 tUnfolder$Statistics]: existing Event has 184 ancestors and is cut-off event [2022-09-20 22:49:52,931 INFO L386 tUnfolder$Statistics]: existing Event has 184 ancestors and is cut-off event [2022-09-20 22:49:52,931 INFO L386 tUnfolder$Statistics]: existing Event has 184 ancestors and is cut-off event [2022-09-20 22:49:52,960 INFO L130 PetriNetUnfolder]: 387/3898 cut-off events. [2022-09-20 22:49:52,960 INFO L131 PetriNetUnfolder]: For 239/244 co-relation queries the response was YES. [2022-09-20 22:49:52,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4739 conditions, 3898 events. 387/3898 cut-off events. For 239/244 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 35766 event pairs, 46 based on Foata normal form. 0/3446 useless extension candidates. Maximal degree in co-relation 4727. Up to 289 conditions per place. [2022-09-20 22:49:52,999 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 29 selfloop transitions, 9 changer transitions 0/357 dead transitions. [2022-09-20 22:49:53,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 357 transitions, 931 flow [2022-09-20 22:49:53,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 22:49:53,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 22:49:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1936 transitions. [2022-09-20 22:49:53,003 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9140698772426817 [2022-09-20 22:49:53,003 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1936 transitions. [2022-09-20 22:49:53,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1936 transitions. [2022-09-20 22:49:53,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:53,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1936 transitions. [2022-09-20 22:49:53,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 322.6666666666667) internal successors, (1936), 6 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:53,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:53,010 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:53,011 INFO L175 Difference]: Start difference. First operand has 326 places, 341 transitions, 818 flow. Second operand 6 states and 1936 transitions. [2022-09-20 22:49:53,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 357 transitions, 931 flow [2022-09-20 22:49:53,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 357 transitions, 927 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:49:53,019 INFO L231 Difference]: Finished difference. Result has 334 places, 347 transitions, 873 flow [2022-09-20 22:49:53,019 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=873, PETRI_PLACES=334, PETRI_TRANSITIONS=347} [2022-09-20 22:49:53,020 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 20 predicate places. [2022-09-20 22:49:53,020 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 347 transitions, 873 flow [2022-09-20 22:49:53,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 318.6) internal successors, (1593), 5 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:53,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:53,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:53,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:49:53,021 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 22:49:53,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:53,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1137506395, now seen corresponding path program 1 times [2022-09-20 22:49:53,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:53,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173694186] [2022-09-20 22:49:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:53,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:53,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:53,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173694186] [2022-09-20 22:49:53,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173694186] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:53,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:53,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:49:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029516937] [2022-09-20 22:49:53,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:53,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:49:53,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:53,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:49:53,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:49:53,064 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 353 [2022-09-20 22:49:53,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 347 transitions, 873 flow. Second operand has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:53,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:53,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 353 [2022-09-20 22:49:53,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:53,630 INFO L130 PetriNetUnfolder]: 829/5948 cut-off events. [2022-09-20 22:49:53,630 INFO L131 PetriNetUnfolder]: For 459/472 co-relation queries the response was YES. [2022-09-20 22:49:53,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7944 conditions, 5948 events. 829/5948 cut-off events. For 459/472 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 62629 event pairs, 441 based on Foata normal form. 0/5243 useless extension candidates. Maximal degree in co-relation 7928. Up to 588 conditions per place. [2022-09-20 22:49:53,711 INFO L137 encePairwiseOnDemand]: 347/353 looper letters, 59 selfloop transitions, 2 changer transitions 0/369 dead transitions. [2022-09-20 22:49:53,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 369 transitions, 1050 flow [2022-09-20 22:49:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:49:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:49:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 973 transitions. [2022-09-20 22:49:53,714 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9187913125590179 [2022-09-20 22:49:53,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 973 transitions. [2022-09-20 22:49:53,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 973 transitions. [2022-09-20 22:49:53,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:53,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 973 transitions. [2022-09-20 22:49:53,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:53,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:53,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:53,718 INFO L175 Difference]: Start difference. First operand has 334 places, 347 transitions, 873 flow. Second operand 3 states and 973 transitions. [2022-09-20 22:49:53,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 369 transitions, 1050 flow [2022-09-20 22:49:53,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 369 transitions, 1045 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:49:53,725 INFO L231 Difference]: Finished difference. Result has 337 places, 347 transitions, 882 flow [2022-09-20 22:49:53,725 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=882, PETRI_PLACES=337, PETRI_TRANSITIONS=347} [2022-09-20 22:49:53,726 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 23 predicate places. [2022-09-20 22:49:53,726 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 347 transitions, 882 flow [2022-09-20 22:49:53,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:53,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:53,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:53,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:49:53,727 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 22:49:53,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash -145199068, now seen corresponding path program 1 times [2022-09-20 22:49:53,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:53,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27756817] [2022-09-20 22:49:53,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:53,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:53,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:53,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27756817] [2022-09-20 22:49:53,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27756817] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:53,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:53,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:49:53,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835811158] [2022-09-20 22:49:53,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:53,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:49:53,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:53,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:49:53,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:49:53,786 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 353 [2022-09-20 22:49:53,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 347 transitions, 882 flow. Second operand has 5 states, 5 states have (on average 324.4) internal successors, (1622), 5 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:53,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:53,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 353 [2022-09-20 22:49:53,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:54,013 INFO L130 PetriNetUnfolder]: 110/1717 cut-off events. [2022-09-20 22:49:54,013 INFO L131 PetriNetUnfolder]: For 78/95 co-relation queries the response was YES. [2022-09-20 22:49:54,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2070 conditions, 1717 events. 110/1717 cut-off events. For 78/95 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 11617 event pairs, 4 based on Foata normal form. 0/1583 useless extension candidates. Maximal degree in co-relation 2053. Up to 53 conditions per place. [2022-09-20 22:49:54,029 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 16 selfloop transitions, 4 changer transitions 0/351 dead transitions. [2022-09-20 22:49:54,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 351 transitions, 930 flow [2022-09-20 22:49:54,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:49:54,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:49:54,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1631 transitions. [2022-09-20 22:49:54,033 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9240793201133144 [2022-09-20 22:49:54,033 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1631 transitions. [2022-09-20 22:49:54,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1631 transitions. [2022-09-20 22:49:54,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:54,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1631 transitions. [2022-09-20 22:49:54,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 326.2) internal successors, (1631), 5 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:54,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:54,040 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:54,040 INFO L175 Difference]: Start difference. First operand has 337 places, 347 transitions, 882 flow. Second operand 5 states and 1631 transitions. [2022-09-20 22:49:54,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 351 transitions, 930 flow [2022-09-20 22:49:54,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 351 transitions, 928 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:49:54,045 INFO L231 Difference]: Finished difference. Result has 341 places, 348 transitions, 896 flow [2022-09-20 22:49:54,046 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=896, PETRI_PLACES=341, PETRI_TRANSITIONS=348} [2022-09-20 22:49:54,046 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 27 predicate places. [2022-09-20 22:49:54,046 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 348 transitions, 896 flow [2022-09-20 22:49:54,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 324.4) internal successors, (1622), 5 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:54,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:54,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:54,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:49:54,047 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 22:49:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:54,048 INFO L85 PathProgramCache]: Analyzing trace with hash -401260663, now seen corresponding path program 1 times [2022-09-20 22:49:54,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:54,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300961436] [2022-09-20 22:49:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:54,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:54,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:54,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300961436] [2022-09-20 22:49:54,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300961436] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:49:54,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870614723] [2022-09-20 22:49:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:54,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:49:54,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:49:54,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:49:54,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 22:49:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:54,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 22:49:54,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:49:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:54,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:49:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:54,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870614723] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:49:54,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:49:54,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-09-20 22:49:54,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756633066] [2022-09-20 22:49:54,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:49:54,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-20 22:49:54,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:54,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-20 22:49:54,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-09-20 22:49:54,393 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 353 [2022-09-20 22:49:54,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 348 transitions, 896 flow. Second operand has 14 states, 14 states have (on average 323.64285714285717) internal successors, (4531), 14 states have internal predecessors, (4531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:54,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:54,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 353 [2022-09-20 22:49:54,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:54,682 INFO L130 PetriNetUnfolder]: 110/1726 cut-off events. [2022-09-20 22:49:54,682 INFO L131 PetriNetUnfolder]: For 76/88 co-relation queries the response was YES. [2022-09-20 22:49:54,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2096 conditions, 1726 events. 110/1726 cut-off events. For 76/88 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 11573 event pairs, 4 based on Foata normal form. 2/1593 useless extension candidates. Maximal degree in co-relation 2078. Up to 53 conditions per place. [2022-09-20 22:49:54,695 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 17 selfloop transitions, 11 changer transitions 0/358 dead transitions. [2022-09-20 22:49:54,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 358 transitions, 974 flow [2022-09-20 22:49:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 22:49:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 22:49:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3561 transitions. [2022-09-20 22:49:54,700 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9170744269894412 [2022-09-20 22:49:54,700 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3561 transitions. [2022-09-20 22:49:54,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3561 transitions. [2022-09-20 22:49:54,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:54,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3561 transitions. [2022-09-20 22:49:54,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 323.72727272727275) internal successors, (3561), 11 states have internal predecessors, (3561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:54,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:54,711 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:54,711 INFO L175 Difference]: Start difference. First operand has 341 places, 348 transitions, 896 flow. Second operand 11 states and 3561 transitions. [2022-09-20 22:49:54,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 358 transitions, 974 flow [2022-09-20 22:49:54,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 358 transitions, 968 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 22:49:54,716 INFO L231 Difference]: Finished difference. Result has 351 places, 354 transitions, 945 flow [2022-09-20 22:49:54,717 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=945, PETRI_PLACES=351, PETRI_TRANSITIONS=354} [2022-09-20 22:49:54,717 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 37 predicate places. [2022-09-20 22:49:54,717 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 354 transitions, 945 flow [2022-09-20 22:49:54,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 323.64285714285717) internal successors, (4531), 14 states have internal predecessors, (4531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:54,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:54,719 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:54,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 22:49:54,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:49:54,936 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 22:49:54,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:54,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2081085015, now seen corresponding path program 2 times [2022-09-20 22:49:54,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:54,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369606859] [2022-09-20 22:49:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:54,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:49:55,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:55,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369606859] [2022-09-20 22:49:55,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369606859] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:55,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:55,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:49:55,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436776307] [2022-09-20 22:49:55,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:55,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:49:55,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:49:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:49:55,035 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 353 [2022-09-20 22:49:55,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 354 transitions, 945 flow. Second operand has 8 states, 8 states have (on average 309.125) internal successors, (2473), 8 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:55,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:55,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 353 [2022-09-20 22:49:55,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:55,293 INFO L130 PetriNetUnfolder]: 111/1830 cut-off events. [2022-09-20 22:49:55,293 INFO L131 PetriNetUnfolder]: For 78/90 co-relation queries the response was YES. [2022-09-20 22:49:55,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 1830 events. 111/1830 cut-off events. For 78/90 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 12300 event pairs, 4 based on Foata normal form. 8/1703 useless extension candidates. Maximal degree in co-relation 2383. Up to 128 conditions per place. [2022-09-20 22:49:55,309 INFO L137 encePairwiseOnDemand]: 344/353 looper letters, 35 selfloop transitions, 4 changer transitions 5/369 dead transitions. [2022-09-20 22:49:55,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 369 transitions, 1063 flow [2022-09-20 22:49:55,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 22:49:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 22:49:55,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2493 transitions. [2022-09-20 22:49:55,313 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8827903682719547 [2022-09-20 22:49:55,313 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2493 transitions. [2022-09-20 22:49:55,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2493 transitions. [2022-09-20 22:49:55,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:55,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2493 transitions. [2022-09-20 22:49:55,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 311.625) internal successors, (2493), 8 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:55,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:55,321 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:55,321 INFO L175 Difference]: Start difference. First operand has 351 places, 354 transitions, 945 flow. Second operand 8 states and 2493 transitions. [2022-09-20 22:49:55,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 369 transitions, 1063 flow [2022-09-20 22:49:55,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 369 transitions, 1054 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-20 22:49:55,328 INFO L231 Difference]: Finished difference. Result has 361 places, 357 transitions, 972 flow [2022-09-20 22:49:55,329 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=972, PETRI_PLACES=361, PETRI_TRANSITIONS=357} [2022-09-20 22:49:55,351 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 47 predicate places. [2022-09-20 22:49:55,351 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 357 transitions, 972 flow [2022-09-20 22:49:55,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 309.125) internal successors, (2473), 8 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:55,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:55,352 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:55,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 22:49:55,353 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 22:49:55,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:55,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1901665691, now seen corresponding path program 1 times [2022-09-20 22:49:55,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:55,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698134906] [2022-09-20 22:49:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:55,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:49:55,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:55,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698134906] [2022-09-20 22:49:55,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698134906] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:55,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:55,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 22:49:55,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992648063] [2022-09-20 22:49:55,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:55,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 22:49:55,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:55,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 22:49:55,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 22:49:55,402 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 353 [2022-09-20 22:49:55,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 357 transitions, 972 flow. Second operand has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:55,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:55,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 353 [2022-09-20 22:49:55,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:55,749 INFO L130 PetriNetUnfolder]: 293/2938 cut-off events. [2022-09-20 22:49:55,749 INFO L131 PetriNetUnfolder]: For 213/224 co-relation queries the response was YES. [2022-09-20 22:49:55,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3963 conditions, 2938 events. 293/2938 cut-off events. For 213/224 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 24194 event pairs, 64 based on Foata normal form. 0/2626 useless extension candidates. Maximal degree in co-relation 3936. Up to 196 conditions per place. [2022-09-20 22:49:55,776 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 26 selfloop transitions, 11 changer transitions 0/371 dead transitions. [2022-09-20 22:49:55,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 371 transitions, 1077 flow [2022-09-20 22:49:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 22:49:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 22:49:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1298 transitions. [2022-09-20 22:49:55,779 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9192634560906515 [2022-09-20 22:49:55,779 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1298 transitions. [2022-09-20 22:49:55,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1298 transitions. [2022-09-20 22:49:55,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:55,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1298 transitions. [2022-09-20 22:49:55,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 324.5) internal successors, (1298), 4 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:55,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:55,782 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:55,783 INFO L175 Difference]: Start difference. First operand has 361 places, 357 transitions, 972 flow. Second operand 4 states and 1298 transitions. [2022-09-20 22:49:55,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 371 transitions, 1077 flow [2022-09-20 22:49:55,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 371 transitions, 1067 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-09-20 22:49:55,790 INFO L231 Difference]: Finished difference. Result has 358 places, 363 transitions, 1032 flow [2022-09-20 22:49:55,790 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1032, PETRI_PLACES=358, PETRI_TRANSITIONS=363} [2022-09-20 22:49:55,790 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 44 predicate places. [2022-09-20 22:49:55,791 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 363 transitions, 1032 flow [2022-09-20 22:49:55,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:55,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:55,791 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:55,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 22:49:55,791 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 22:49:55,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:55,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1088730176, now seen corresponding path program 1 times [2022-09-20 22:49:55,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:55,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927666057] [2022-09-20 22:49:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:55,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:49:55,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:55,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927666057] [2022-09-20 22:49:55,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927666057] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:55,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:55,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 22:49:55,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004886165] [2022-09-20 22:49:55,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:55,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 22:49:55,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:55,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 22:49:55,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 22:49:55,825 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 353 [2022-09-20 22:49:55,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 363 transitions, 1032 flow. Second operand has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:55,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:55,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 353 [2022-09-20 22:49:55,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:56,089 INFO L130 PetriNetUnfolder]: 178/2081 cut-off events. [2022-09-20 22:49:56,090 INFO L131 PetriNetUnfolder]: For 169/305 co-relation queries the response was YES. [2022-09-20 22:49:56,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2879 conditions, 2081 events. 178/2081 cut-off events. For 169/305 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 14249 event pairs, 37 based on Foata normal form. 10/1960 useless extension candidates. Maximal degree in co-relation 2854. Up to 136 conditions per place. [2022-09-20 22:49:56,114 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 35 selfloop transitions, 4 changer transitions 0/372 dead transitions. [2022-09-20 22:49:56,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 372 transitions, 1135 flow [2022-09-20 22:49:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:49:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:49:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1611 transitions. [2022-09-20 22:49:56,116 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9127478753541076 [2022-09-20 22:49:56,116 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1611 transitions. [2022-09-20 22:49:56,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1611 transitions. [2022-09-20 22:49:56,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:56,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1611 transitions. [2022-09-20 22:49:56,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 322.2) internal successors, (1611), 5 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:56,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:56,121 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:56,121 INFO L175 Difference]: Start difference. First operand has 358 places, 363 transitions, 1032 flow. Second operand 5 states and 1611 transitions. [2022-09-20 22:49:56,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 372 transitions, 1135 flow [2022-09-20 22:49:56,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 372 transitions, 1133 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-09-20 22:49:56,128 INFO L231 Difference]: Finished difference. Result has 363 places, 363 transitions, 1044 flow [2022-09-20 22:49:56,128 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1044, PETRI_PLACES=363, PETRI_TRANSITIONS=363} [2022-09-20 22:49:56,129 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 49 predicate places. [2022-09-20 22:49:56,129 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 363 transitions, 1044 flow [2022-09-20 22:49:56,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:56,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:56,130 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:56,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 22:49:56,130 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 22:49:56,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:56,130 INFO L85 PathProgramCache]: Analyzing trace with hash -688946353, now seen corresponding path program 1 times [2022-09-20 22:49:56,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:56,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649894600] [2022-09-20 22:49:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:56,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:49:56,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:56,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649894600] [2022-09-20 22:49:56,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649894600] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:56,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:56,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 22:49:56,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917932240] [2022-09-20 22:49:56,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:56,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 22:49:56,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 22:49:56,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 22:49:56,171 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 353 [2022-09-20 22:49:56,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 363 transitions, 1044 flow. Second operand has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:56,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:56,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 353 [2022-09-20 22:49:56,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:56,496 INFO L130 PetriNetUnfolder]: 288/2762 cut-off events. [2022-09-20 22:49:56,496 INFO L131 PetriNetUnfolder]: For 419/430 co-relation queries the response was YES. [2022-09-20 22:49:56,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3860 conditions, 2762 events. 288/2762 cut-off events. For 419/430 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 21173 event pairs, 91 based on Foata normal form. 5/2502 useless extension candidates. Maximal degree in co-relation 3833. Up to 299 conditions per place. [2022-09-20 22:49:56,523 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 34 selfloop transitions, 4 changer transitions 0/371 dead transitions. [2022-09-20 22:49:56,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 371 transitions, 1142 flow [2022-09-20 22:49:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:49:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:49:56,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1610 transitions. [2022-09-20 22:49:56,585 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9121813031161473 [2022-09-20 22:49:56,585 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1610 transitions. [2022-09-20 22:49:56,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1610 transitions. [2022-09-20 22:49:56,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:56,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1610 transitions. [2022-09-20 22:49:56,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:56,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:56,590 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:56,590 INFO L175 Difference]: Start difference. First operand has 363 places, 363 transitions, 1044 flow. Second operand 5 states and 1610 transitions. [2022-09-20 22:49:56,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 371 transitions, 1142 flow [2022-09-20 22:49:56,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 371 transitions, 1134 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-20 22:49:56,597 INFO L231 Difference]: Finished difference. Result has 366 places, 363 transitions, 1050 flow [2022-09-20 22:49:56,597 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1050, PETRI_PLACES=366, PETRI_TRANSITIONS=363} [2022-09-20 22:49:56,598 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 52 predicate places. [2022-09-20 22:49:56,598 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 363 transitions, 1050 flow [2022-09-20 22:49:56,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:56,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:56,598 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:56,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 22:49:56,599 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 22:49:56,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:56,599 INFO L85 PathProgramCache]: Analyzing trace with hash -712805592, now seen corresponding path program 1 times [2022-09-20 22:49:56,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:56,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091961540] [2022-09-20 22:49:56,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:56,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:49:56,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:56,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091961540] [2022-09-20 22:49:56,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091961540] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:56,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:56,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:49:56,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511573875] [2022-09-20 22:49:56,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:56,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:49:56,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:49:56,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:49:56,630 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 353 [2022-09-20 22:49:56,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 363 transitions, 1050 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:56,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:56,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 353 [2022-09-20 22:49:56,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:57,740 INFO L130 PetriNetUnfolder]: 1086/8872 cut-off events. [2022-09-20 22:49:57,741 INFO L131 PetriNetUnfolder]: For 1491/1510 co-relation queries the response was YES. [2022-09-20 22:49:57,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12700 conditions, 8872 events. 1086/8872 cut-off events. For 1491/1510 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 94194 event pairs, 276 based on Foata normal form. 0/8156 useless extension candidates. Maximal degree in co-relation 12673. Up to 728 conditions per place. [2022-09-20 22:49:57,784 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 55 selfloop transitions, 3 changer transitions 0/384 dead transitions. [2022-09-20 22:49:57,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 384 transitions, 1241 flow [2022-09-20 22:49:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:49:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:49:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 972 transitions. [2022-09-20 22:49:57,786 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9178470254957507 [2022-09-20 22:49:57,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 972 transitions. [2022-09-20 22:49:57,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 972 transitions. [2022-09-20 22:49:57,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:57,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 972 transitions. [2022-09-20 22:49:57,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:57,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:57,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:57,789 INFO L175 Difference]: Start difference. First operand has 366 places, 363 transitions, 1050 flow. Second operand 3 states and 972 transitions. [2022-09-20 22:49:57,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 384 transitions, 1241 flow [2022-09-20 22:49:57,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 384 transitions, 1235 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-09-20 22:49:57,801 INFO L231 Difference]: Finished difference. Result has 368 places, 365 transitions, 1066 flow [2022-09-20 22:49:57,802 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1066, PETRI_PLACES=368, PETRI_TRANSITIONS=365} [2022-09-20 22:49:57,802 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 54 predicate places. [2022-09-20 22:49:57,802 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 365 transitions, 1066 flow [2022-09-20 22:49:57,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:57,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:57,803 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:57,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-20 22:49:57,803 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 22:49:57,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:57,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1009038690, now seen corresponding path program 1 times [2022-09-20 22:49:57,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:57,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896191898] [2022-09-20 22:49:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:57,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:57,837 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:49:57,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:57,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896191898] [2022-09-20 22:49:57,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896191898] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:57,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:57,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:49:57,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753875199] [2022-09-20 22:49:57,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:57,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:49:57,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:57,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:49:57,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:49:57,839 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 353 [2022-09-20 22:49:57,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 365 transitions, 1066 flow. Second operand has 5 states, 5 states have (on average 316.8) internal successors, (1584), 5 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:57,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:57,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 353 [2022-09-20 22:49:57,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:58,239 INFO L130 PetriNetUnfolder]: 251/2805 cut-off events. [2022-09-20 22:49:58,239 INFO L131 PetriNetUnfolder]: For 291/768 co-relation queries the response was YES. [2022-09-20 22:49:58,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 2805 events. 251/2805 cut-off events. For 291/768 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 21304 event pairs, 49 based on Foata normal form. 30/2698 useless extension candidates. Maximal degree in co-relation 3987. Up to 186 conditions per place. [2022-09-20 22:49:58,261 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 41 selfloop transitions, 10 changer transitions 0/384 dead transitions. [2022-09-20 22:49:58,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 384 transitions, 1225 flow [2022-09-20 22:49:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:49:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:49:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2239 transitions. [2022-09-20 22:49:58,265 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9061108862808579 [2022-09-20 22:49:58,265 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2239 transitions. [2022-09-20 22:49:58,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2239 transitions. [2022-09-20 22:49:58,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:58,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2239 transitions. [2022-09-20 22:49:58,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 319.85714285714283) internal successors, (2239), 7 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:58,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:58,271 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:58,271 INFO L175 Difference]: Start difference. First operand has 368 places, 365 transitions, 1066 flow. Second operand 7 states and 2239 transitions. [2022-09-20 22:49:58,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 384 transitions, 1225 flow [2022-09-20 22:49:58,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 384 transitions, 1219 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:49:58,279 INFO L231 Difference]: Finished difference. Result has 375 places, 371 transitions, 1129 flow [2022-09-20 22:49:58,279 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1129, PETRI_PLACES=375, PETRI_TRANSITIONS=371} [2022-09-20 22:49:58,280 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 61 predicate places. [2022-09-20 22:49:58,280 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 371 transitions, 1129 flow [2022-09-20 22:49:58,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 316.8) internal successors, (1584), 5 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:58,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:58,280 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:58,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-20 22:49:58,280 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 22:49:58,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:58,281 INFO L85 PathProgramCache]: Analyzing trace with hash -581660730, now seen corresponding path program 1 times [2022-09-20 22:49:58,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:58,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825767842] [2022-09-20 22:49:58,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:58,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:49:58,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:58,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825767842] [2022-09-20 22:49:58,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825767842] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:58,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:58,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:49:58,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463401875] [2022-09-20 22:49:58,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:58,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:49:58,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:58,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:49:58,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:49:58,308 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 353 [2022-09-20 22:49:58,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 371 transitions, 1129 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:58,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:58,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 353 [2022-09-20 22:49:58,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:59,347 INFO L130 PetriNetUnfolder]: 1003/9320 cut-off events. [2022-09-20 22:49:59,347 INFO L131 PetriNetUnfolder]: For 1773/1813 co-relation queries the response was YES. [2022-09-20 22:49:59,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13432 conditions, 9320 events. 1003/9320 cut-off events. For 1773/1813 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 100557 event pairs, 311 based on Foata normal form. 7/8648 useless extension candidates. Maximal degree in co-relation 13402. Up to 808 conditions per place. [2022-09-20 22:49:59,408 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 53 selfloop transitions, 2 changer transitions 0/387 dead transitions. [2022-09-20 22:49:59,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 387 transitions, 1294 flow [2022-09-20 22:49:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:49:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:49:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 969 transitions. [2022-09-20 22:49:59,410 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9150141643059491 [2022-09-20 22:49:59,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 969 transitions. [2022-09-20 22:49:59,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 969 transitions. [2022-09-20 22:49:59,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:59,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 969 transitions. [2022-09-20 22:49:59,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:59,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:59,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:59,414 INFO L175 Difference]: Start difference. First operand has 375 places, 371 transitions, 1129 flow. Second operand 3 states and 969 transitions. [2022-09-20 22:49:59,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 387 transitions, 1294 flow [2022-09-20 22:49:59,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 387 transitions, 1288 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-09-20 22:49:59,429 INFO L231 Difference]: Finished difference. Result has 376 places, 371 transitions, 1131 flow [2022-09-20 22:49:59,430 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1131, PETRI_PLACES=376, PETRI_TRANSITIONS=371} [2022-09-20 22:49:59,431 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 62 predicate places. [2022-09-20 22:49:59,431 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 371 transitions, 1131 flow [2022-09-20 22:49:59,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:59,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:59,431 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:59,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-20 22:49:59,432 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 22:49:59,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:59,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1195508104, now seen corresponding path program 1 times [2022-09-20 22:49:59,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:59,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554552293] [2022-09-20 22:49:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:59,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:49:59,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:59,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554552293] [2022-09-20 22:49:59,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554552293] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:59,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:59,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:49:59,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710530261] [2022-09-20 22:49:59,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:59,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:49:59,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:59,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:49:59,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:49:59,481 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 353 [2022-09-20 22:49:59,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 371 transitions, 1131 flow. Second operand has 6 states, 6 states have (on average 316.8333333333333) internal successors, (1901), 6 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:59,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:59,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 353 [2022-09-20 22:49:59,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:00,022 INFO L130 PetriNetUnfolder]: 293/3349 cut-off events. [2022-09-20 22:50:00,022 INFO L131 PetriNetUnfolder]: For 371/923 co-relation queries the response was YES. [2022-09-20 22:50:00,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4975 conditions, 3349 events. 293/3349 cut-off events. For 371/923 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 26911 event pairs, 56 based on Foata normal form. 42/3226 useless extension candidates. Maximal degree in co-relation 4943. Up to 271 conditions per place. [2022-09-20 22:50:00,059 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 41 selfloop transitions, 12 changer transitions 0/396 dead transitions. [2022-09-20 22:50:00,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 396 transitions, 1306 flow [2022-09-20 22:50:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:50:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:50:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2248 transitions. [2022-09-20 22:50:00,063 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9097531363820316 [2022-09-20 22:50:00,063 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2248 transitions. [2022-09-20 22:50:00,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2248 transitions. [2022-09-20 22:50:00,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:00,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2248 transitions. [2022-09-20 22:50:00,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.14285714285717) internal successors, (2248), 7 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:00,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:00,069 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:00,069 INFO L175 Difference]: Start difference. First operand has 376 places, 371 transitions, 1131 flow. Second operand 7 states and 2248 transitions. [2022-09-20 22:50:00,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 396 transitions, 1306 flow [2022-09-20 22:50:00,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 396 transitions, 1304 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:50:00,091 INFO L231 Difference]: Finished difference. Result has 386 places, 382 transitions, 1228 flow [2022-09-20 22:50:00,091 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1228, PETRI_PLACES=386, PETRI_TRANSITIONS=382} [2022-09-20 22:50:00,091 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 72 predicate places. [2022-09-20 22:50:00,091 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 382 transitions, 1228 flow [2022-09-20 22:50:00,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 316.8333333333333) internal successors, (1901), 6 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:00,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:00,092 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:50:00,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-20 22:50:00,092 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 22:50:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash -943777404, now seen corresponding path program 1 times [2022-09-20 22:50:00,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:00,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641359955] [2022-09-20 22:50:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:00,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-09-20 22:50:00,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:00,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641359955] [2022-09-20 22:50:00,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641359955] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:00,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:00,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:50:00,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735340082] [2022-09-20 22:50:00,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:00,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:50:00,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:00,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:50:00,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:50:00,160 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 353 [2022-09-20 22:50:00,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 382 transitions, 1228 flow. Second operand has 7 states, 7 states have (on average 314.7142857142857) internal successors, (2203), 7 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:00,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:00,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 353 [2022-09-20 22:50:00,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:00,798 INFO L130 PetriNetUnfolder]: 326/3734 cut-off events. [2022-09-20 22:50:00,798 INFO L131 PetriNetUnfolder]: For 650/1226 co-relation queries the response was YES. [2022-09-20 22:50:00,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5876 conditions, 3734 events. 326/3734 cut-off events. For 650/1226 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 30897 event pairs, 55 based on Foata normal form. 16/3561 useless extension candidates. Maximal degree in co-relation 5839. Up to 424 conditions per place. [2022-09-20 22:50:00,849 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 50 selfloop transitions, 17 changer transitions 0/407 dead transitions. [2022-09-20 22:50:00,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 407 transitions, 1459 flow [2022-09-20 22:50:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 22:50:00,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 22:50:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2551 transitions. [2022-09-20 22:50:00,854 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9033286118980169 [2022-09-20 22:50:00,854 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2551 transitions. [2022-09-20 22:50:00,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2551 transitions. [2022-09-20 22:50:00,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:00,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2551 transitions. [2022-09-20 22:50:00,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 318.875) internal successors, (2551), 8 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:00,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:00,861 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:00,861 INFO L175 Difference]: Start difference. First operand has 386 places, 382 transitions, 1228 flow. Second operand 8 states and 2551 transitions. [2022-09-20 22:50:00,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 407 transitions, 1459 flow [2022-09-20 22:50:00,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 407 transitions, 1457 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-09-20 22:50:00,873 INFO L231 Difference]: Finished difference. Result has 397 places, 391 transitions, 1349 flow [2022-09-20 22:50:00,873 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1349, PETRI_PLACES=397, PETRI_TRANSITIONS=391} [2022-09-20 22:50:00,874 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 83 predicate places. [2022-09-20 22:50:00,874 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 391 transitions, 1349 flow [2022-09-20 22:50:00,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.7142857142857) internal successors, (2203), 7 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:00,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:00,875 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:50:00,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-20 22:50:00,875 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 22:50:00,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:00,875 INFO L85 PathProgramCache]: Analyzing trace with hash 929962279, now seen corresponding path program 1 times [2022-09-20 22:50:00,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:00,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697461544] [2022-09-20 22:50:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:00,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:50:00,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:00,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697461544] [2022-09-20 22:50:00,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697461544] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:00,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:00,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:50:00,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645082601] [2022-09-20 22:50:00,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:00,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:50:00,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:00,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:50:00,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:50:00,905 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 353 [2022-09-20 22:50:00,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 391 transitions, 1349 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:00,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:00,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 353 [2022-09-20 22:50:00,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:03,341 INFO L130 PetriNetUnfolder]: 2221/17278 cut-off events. [2022-09-20 22:50:03,341 INFO L131 PetriNetUnfolder]: For 4440/4961 co-relation queries the response was YES. [2022-09-20 22:50:03,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26245 conditions, 17278 events. 2221/17278 cut-off events. For 4440/4961 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 221263 event pairs, 754 based on Foata normal form. 19/16085 useless extension candidates. Maximal degree in co-relation 26203. Up to 1827 conditions per place. [2022-09-20 22:50:03,523 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 54 selfloop transitions, 3 changer transitions 0/411 dead transitions. [2022-09-20 22:50:03,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 411 transitions, 1539 flow [2022-09-20 22:50:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:50:03,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:50:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 971 transitions. [2022-09-20 22:50:03,525 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9169027384324835 [2022-09-20 22:50:03,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 971 transitions. [2022-09-20 22:50:03,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 971 transitions. [2022-09-20 22:50:03,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:03,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 971 transitions. [2022-09-20 22:50:03,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:03,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:03,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:03,528 INFO L175 Difference]: Start difference. First operand has 397 places, 391 transitions, 1349 flow. Second operand 3 states and 971 transitions. [2022-09-20 22:50:03,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 411 transitions, 1539 flow [2022-09-20 22:50:03,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 411 transitions, 1520 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-09-20 22:50:03,557 INFO L231 Difference]: Finished difference. Result has 398 places, 393 transitions, 1352 flow [2022-09-20 22:50:03,557 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1352, PETRI_PLACES=398, PETRI_TRANSITIONS=393} [2022-09-20 22:50:03,558 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 84 predicate places. [2022-09-20 22:50:03,558 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 393 transitions, 1352 flow [2022-09-20 22:50:03,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:03,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:03,558 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:50:03,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-20 22:50:03,558 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 22:50:03,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:03,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1656098533, now seen corresponding path program 1 times [2022-09-20 22:50:03,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:03,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638106141] [2022-09-20 22:50:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:03,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:50:03,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:03,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638106141] [2022-09-20 22:50:03,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638106141] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:03,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:03,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:50:03,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035499444] [2022-09-20 22:50:03,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:03,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:50:03,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:03,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:50:03,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:50:03,599 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 353 [2022-09-20 22:50:03,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 393 transitions, 1352 flow. Second operand has 6 states, 6 states have (on average 300.1666666666667) internal successors, (1801), 6 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:03,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:03,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 353 [2022-09-20 22:50:03,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:08,603 INFO L130 PetriNetUnfolder]: 5523/29910 cut-off events. [2022-09-20 22:50:08,603 INFO L131 PetriNetUnfolder]: For 16442/16625 co-relation queries the response was YES. [2022-09-20 22:50:08,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56164 conditions, 29910 events. 5523/29910 cut-off events. For 16442/16625 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 390339 event pairs, 2532 based on Foata normal form. 380/28639 useless extension candidates. Maximal degree in co-relation 56121. Up to 6224 conditions per place. [2022-09-20 22:50:08,850 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 213 selfloop transitions, 41 changer transitions 0/588 dead transitions. [2022-09-20 22:50:08,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 588 transitions, 2735 flow [2022-09-20 22:50:08,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:50:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:50:08,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5246 transitions. [2022-09-20 22:50:08,857 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8741876353941009 [2022-09-20 22:50:08,857 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5246 transitions. [2022-09-20 22:50:08,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5246 transitions. [2022-09-20 22:50:08,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:08,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5246 transitions. [2022-09-20 22:50:08,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 308.5882352941176) internal successors, (5246), 17 states have internal predecessors, (5246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:08,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 353.0) internal successors, (6354), 18 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:08,871 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 353.0) internal successors, (6354), 18 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:08,871 INFO L175 Difference]: Start difference. First operand has 398 places, 393 transitions, 1352 flow. Second operand 17 states and 5246 transitions. [2022-09-20 22:50:08,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 588 transitions, 2735 flow [2022-09-20 22:50:08,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 588 transitions, 2729 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:50:08,966 INFO L231 Difference]: Finished difference. Result has 424 places, 428 transitions, 1711 flow [2022-09-20 22:50:08,967 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1711, PETRI_PLACES=424, PETRI_TRANSITIONS=428} [2022-09-20 22:50:08,967 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 110 predicate places. [2022-09-20 22:50:08,967 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 428 transitions, 1711 flow [2022-09-20 22:50:08,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.1666666666667) internal successors, (1801), 6 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:08,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:08,968 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:50:08,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-20 22:50:08,968 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 22:50:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:08,968 INFO L85 PathProgramCache]: Analyzing trace with hash -956358913, now seen corresponding path program 1 times [2022-09-20 22:50:08,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:08,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935636256] [2022-09-20 22:50:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:08,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:50:09,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:09,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935636256] [2022-09-20 22:50:09,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935636256] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:09,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:09,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:50:09,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946663975] [2022-09-20 22:50:09,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:09,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:50:09,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:09,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:50:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:50:09,132 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 353 [2022-09-20 22:50:09,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 428 transitions, 1711 flow. Second operand has 6 states, 6 states have (on average 316.8333333333333) internal successors, (1901), 6 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:09,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:09,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 353 [2022-09-20 22:50:09,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:11,574 INFO L130 PetriNetUnfolder]: 1387/12704 cut-off events. [2022-09-20 22:50:11,574 INFO L131 PetriNetUnfolder]: For 5962/6022 co-relation queries the response was YES. [2022-09-20 22:50:11,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21290 conditions, 12704 events. 1387/12704 cut-off events. For 5962/6022 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 156974 event pairs, 418 based on Foata normal form. 87/11647 useless extension candidates. Maximal degree in co-relation 21235. Up to 1463 conditions per place. [2022-09-20 22:50:11,696 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 40 selfloop transitions, 12 changer transitions 0/452 dead transitions. [2022-09-20 22:50:11,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 452 transitions, 1881 flow [2022-09-20 22:50:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:50:11,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:50:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2247 transitions. [2022-09-20 22:50:11,698 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9093484419263456 [2022-09-20 22:50:11,698 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2247 transitions. [2022-09-20 22:50:11,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2247 transitions. [2022-09-20 22:50:11,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:11,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2247 transitions. [2022-09-20 22:50:11,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:11,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:11,702 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:11,702 INFO L175 Difference]: Start difference. First operand has 424 places, 428 transitions, 1711 flow. Second operand 7 states and 2247 transitions. [2022-09-20 22:50:11,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 452 transitions, 1881 flow [2022-09-20 22:50:11,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 452 transitions, 1837 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-09-20 22:50:11,751 INFO L231 Difference]: Finished difference. Result has 432 places, 439 transitions, 1766 flow [2022-09-20 22:50:11,752 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1766, PETRI_PLACES=432, PETRI_TRANSITIONS=439} [2022-09-20 22:50:11,752 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 118 predicate places. [2022-09-20 22:50:11,752 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 439 transitions, 1766 flow [2022-09-20 22:50:11,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 316.8333333333333) internal successors, (1901), 6 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:11,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:11,753 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:50:11,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-20 22:50:11,753 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 22:50:11,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1947792781, now seen corresponding path program 1 times [2022-09-20 22:50:11,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:11,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819844597] [2022-09-20 22:50:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:11,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:11,779 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:50:11,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:11,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819844597] [2022-09-20 22:50:11,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819844597] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:11,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:11,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:50:11,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493062118] [2022-09-20 22:50:11,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:11,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:50:11,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:11,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:50:11,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:50:11,781 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 353 [2022-09-20 22:50:11,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 439 transitions, 1766 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:11,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:11,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 353 [2022-09-20 22:50:11,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:16,053 INFO L130 PetriNetUnfolder]: 2556/23068 cut-off events. [2022-09-20 22:50:16,053 INFO L131 PetriNetUnfolder]: For 16295/16973 co-relation queries the response was YES. [2022-09-20 22:50:16,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41336 conditions, 23068 events. 2556/23068 cut-off events. For 16295/16973 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 315047 event pairs, 729 based on Foata normal form. 22/21743 useless extension candidates. Maximal degree in co-relation 41275. Up to 1964 conditions per place. [2022-09-20 22:50:16,428 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 52 selfloop transitions, 2 changer transitions 0/454 dead transitions. [2022-09-20 22:50:16,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 454 transitions, 1930 flow [2022-09-20 22:50:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:50:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:50:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 968 transitions. [2022-09-20 22:50:16,430 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9140698772426817 [2022-09-20 22:50:16,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 968 transitions. [2022-09-20 22:50:16,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 968 transitions. [2022-09-20 22:50:16,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:16,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 968 transitions. [2022-09-20 22:50:16,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:16,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:16,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:16,432 INFO L175 Difference]: Start difference. First operand has 432 places, 439 transitions, 1766 flow. Second operand 3 states and 968 transitions. [2022-09-20 22:50:16,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 454 transitions, 1930 flow [2022-09-20 22:50:16,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 454 transitions, 1928 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-09-20 22:50:16,624 INFO L231 Difference]: Finished difference. Result has 435 places, 439 transitions, 1772 flow [2022-09-20 22:50:16,624 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1772, PETRI_PLACES=435, PETRI_TRANSITIONS=439} [2022-09-20 22:50:16,624 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 121 predicate places. [2022-09-20 22:50:16,624 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 439 transitions, 1772 flow [2022-09-20 22:50:16,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:16,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:16,625 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:50:16,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-20 22:50:16,625 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 22:50:16,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:16,625 INFO L85 PathProgramCache]: Analyzing trace with hash -477545933, now seen corresponding path program 1 times [2022-09-20 22:50:16,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:16,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379769759] [2022-09-20 22:50:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:16,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:50:16,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:16,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379769759] [2022-09-20 22:50:16,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379769759] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:16,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:16,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:50:16,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126695343] [2022-09-20 22:50:16,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:16,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:50:16,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:16,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:50:16,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:50:16,675 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 353 [2022-09-20 22:50:16,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 439 transitions, 1772 flow. Second operand has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:16,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:16,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 353 [2022-09-20 22:50:16,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:25,844 INFO L130 PetriNetUnfolder]: 8124/44429 cut-off events. [2022-09-20 22:50:25,845 INFO L131 PetriNetUnfolder]: For 49511/49851 co-relation queries the response was YES. [2022-09-20 22:50:26,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94795 conditions, 44429 events. 8124/44429 cut-off events. For 49511/49851 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 614331 event pairs, 3744 based on Foata normal form. 417/42244 useless extension candidates. Maximal degree in co-relation 94732. Up to 8901 conditions per place. [2022-09-20 22:50:26,531 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 272 selfloop transitions, 85 changer transitions 0/699 dead transitions. [2022-09-20 22:50:26,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 699 transitions, 3875 flow [2022-09-20 22:50:26,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-09-20 22:50:26,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-09-20 22:50:26,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 7644 transitions. [2022-09-20 22:50:26,536 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8661756373937677 [2022-09-20 22:50:26,536 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 7644 transitions. [2022-09-20 22:50:26,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 7644 transitions. [2022-09-20 22:50:26,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:26,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 7644 transitions. [2022-09-20 22:50:26,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 305.76) internal successors, (7644), 25 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:26,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 353.0) internal successors, (9178), 26 states have internal predecessors, (9178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:26,549 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 353.0) internal successors, (9178), 26 states have internal predecessors, (9178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:26,550 INFO L175 Difference]: Start difference. First operand has 435 places, 439 transitions, 1772 flow. Second operand 25 states and 7644 transitions. [2022-09-20 22:50:26,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 699 transitions, 3875 flow [2022-09-20 22:50:27,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 699 transitions, 3873 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:50:27,055 INFO L231 Difference]: Finished difference. Result has 470 places, 488 transitions, 2444 flow [2022-09-20 22:50:27,056 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2444, PETRI_PLACES=470, PETRI_TRANSITIONS=488} [2022-09-20 22:50:27,056 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 156 predicate places. [2022-09-20 22:50:27,056 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 488 transitions, 2444 flow [2022-09-20 22:50:27,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:27,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:27,056 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:50:27,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-20 22:50:27,057 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 22:50:27,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:27,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1875759113, now seen corresponding path program 1 times [2022-09-20 22:50:27,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:27,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379911205] [2022-09-20 22:50:27,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:27,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-09-20 22:50:27,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:27,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379911205] [2022-09-20 22:50:27,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379911205] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:27,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:27,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:50:27,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798650107] [2022-09-20 22:50:27,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:27,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:50:27,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:27,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:50:27,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:50:27,101 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 353 [2022-09-20 22:50:27,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 488 transitions, 2444 flow. Second operand has 7 states, 7 states have (on average 314.7142857142857) internal successors, (2203), 7 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:27,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:27,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 353 [2022-09-20 22:50:27,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:30,040 INFO L130 PetriNetUnfolder]: 1375/12973 cut-off events. [2022-09-20 22:50:30,040 INFO L131 PetriNetUnfolder]: For 15098/15165 co-relation queries the response was YES. [2022-09-20 22:50:30,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25090 conditions, 12973 events. 1375/12973 cut-off events. For 15098/15165 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 162724 event pairs, 610 based on Foata normal form. 40/11906 useless extension candidates. Maximal degree in co-relation 25016. Up to 2054 conditions per place. [2022-09-20 22:50:30,205 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 49 selfloop transitions, 17 changer transitions 0/512 dead transitions. [2022-09-20 22:50:30,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 512 transitions, 2670 flow [2022-09-20 22:50:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 22:50:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 22:50:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2550 transitions. [2022-09-20 22:50:30,207 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9029745042492918 [2022-09-20 22:50:30,207 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2550 transitions. [2022-09-20 22:50:30,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2550 transitions. [2022-09-20 22:50:30,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:30,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2550 transitions. [2022-09-20 22:50:30,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 318.75) internal successors, (2550), 8 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 22:50:30,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:30,212 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:30,212 INFO L175 Difference]: Start difference. First operand has 470 places, 488 transitions, 2444 flow. Second operand 8 states and 2550 transitions. [2022-09-20 22:50:30,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 512 transitions, 2670 flow [2022-09-20 22:50:30,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 512 transitions, 2598 flow, removed 28 selfloop flow, removed 2 redundant places. [2022-09-20 22:50:30,291 INFO L231 Difference]: Finished difference. Result has 479 places, 497 transitions, 2495 flow [2022-09-20 22:50:30,291 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2495, PETRI_PLACES=479, PETRI_TRANSITIONS=497} [2022-09-20 22:50:30,291 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 165 predicate places. [2022-09-20 22:50:30,292 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 497 transitions, 2495 flow [2022-09-20 22:50:30,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.7142857142857) internal successors, (2203), 7 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:30,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:30,292 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:50:30,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-20 22:50:30,292 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 22:50:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:30,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1087454516, now seen corresponding path program 1 times [2022-09-20 22:50:30,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:30,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557278992] [2022-09-20 22:50:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:30,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:50:30,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:30,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557278992] [2022-09-20 22:50:30,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557278992] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:50:30,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610006750] [2022-09-20 22:50:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:30,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:50:30,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:50:30,347 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:50:30,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 22:50:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:30,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-20 22:50:30,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:50:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:50:30,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 22:50:30,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610006750] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:30,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 22:50:30,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2022-09-20 22:50:30,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547650488] [2022-09-20 22:50:30,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:30,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:50:30,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:30,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:50:30,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-09-20 22:50:30,479 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 353 [2022-09-20 22:50:30,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 497 transitions, 2495 flow. Second operand has 6 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:30,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:30,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 353 [2022-09-20 22:50:30,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:31,652 INFO L130 PetriNetUnfolder]: 394/4929 cut-off events. [2022-09-20 22:50:31,652 INFO L131 PetriNetUnfolder]: For 5379/7771 co-relation queries the response was YES. [2022-09-20 22:50:31,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 4929 events. 394/4929 cut-off events. For 5379/7771 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 44036 event pairs, 102 based on Foata normal form. 43/4757 useless extension candidates. Maximal degree in co-relation 9566. Up to 353 conditions per place. [2022-09-20 22:50:31,706 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 59 selfloop transitions, 34 changer transitions 3/494 dead transitions. [2022-09-20 22:50:31,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 494 transitions, 2533 flow [2022-09-20 22:50:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:50:31,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:50:31,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2736 transitions. [2022-09-20 22:50:31,708 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8611898016997167 [2022-09-20 22:50:31,709 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2736 transitions. [2022-09-20 22:50:31,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2736 transitions. [2022-09-20 22:50:31,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:31,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2736 transitions. [2022-09-20 22:50:31,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:31,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:31,713 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:31,713 INFO L175 Difference]: Start difference. First operand has 479 places, 497 transitions, 2495 flow. Second operand 9 states and 2736 transitions. [2022-09-20 22:50:31,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 494 transitions, 2533 flow [2022-09-20 22:50:31,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 494 transitions, 2440 flow, removed 31 selfloop flow, removed 9 redundant places. [2022-09-20 22:50:31,744 INFO L231 Difference]: Finished difference. Result has 480 places, 476 transitions, 2289 flow [2022-09-20 22:50:31,744 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=2205, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2289, PETRI_PLACES=480, PETRI_TRANSITIONS=476} [2022-09-20 22:50:31,745 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 166 predicate places. [2022-09-20 22:50:31,745 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 476 transitions, 2289 flow [2022-09-20 22:50:31,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:31,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:31,745 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:50:31,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 22:50:31,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-09-20 22:50:31,962 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 22:50:31,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1876033216, now seen corresponding path program 1 times [2022-09-20 22:50:31,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:31,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63185593] [2022-09-20 22:50:31,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:31,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:50:32,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:32,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63185593] [2022-09-20 22:50:32,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63185593] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:50:32,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800144781] [2022-09-20 22:50:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:32,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:50:32,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:50:32,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:50:32,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 22:50:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:32,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-20 22:50:32,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:50:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:50:32,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 22:50:32,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800144781] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:32,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 22:50:32,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2022-09-20 22:50:32,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576026574] [2022-09-20 22:50:32,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:32,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:50:32,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:50:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-09-20 22:50:32,150 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 353 [2022-09-20 22:50:32,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 476 transitions, 2289 flow. Second operand has 6 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:32,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:32,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 353 [2022-09-20 22:50:32,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:33,356 INFO L130 PetriNetUnfolder]: 944/5985 cut-off events. [2022-09-20 22:50:33,356 INFO L131 PetriNetUnfolder]: For 4100/4113 co-relation queries the response was YES. [2022-09-20 22:50:33,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11408 conditions, 5985 events. 944/5985 cut-off events. For 4100/4113 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 66121 event pairs, 600 based on Foata normal form. 0/5159 useless extension candidates. Maximal degree in co-relation 11330. Up to 1483 conditions per place. [2022-09-20 22:50:33,565 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 43 selfloop transitions, 4 changer transitions 65/434 dead transitions. [2022-09-20 22:50:33,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 434 transitions, 1912 flow [2022-09-20 22:50:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:50:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:50:33,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2735 transitions. [2022-09-20 22:50:33,568 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8608750393452943 [2022-09-20 22:50:33,568 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2735 transitions. [2022-09-20 22:50:33,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2735 transitions. [2022-09-20 22:50:33,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:33,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2735 transitions. [2022-09-20 22:50:33,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 303.8888888888889) internal successors, (2735), 9 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:33,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:33,572 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:33,572 INFO L175 Difference]: Start difference. First operand has 480 places, 476 transitions, 2289 flow. Second operand 9 states and 2735 transitions. [2022-09-20 22:50:33,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 434 transitions, 1912 flow [2022-09-20 22:50:33,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 434 transitions, 1774 flow, removed 32 selfloop flow, removed 27 redundant places. [2022-09-20 22:50:33,596 INFO L231 Difference]: Finished difference. Result has 450 places, 369 transitions, 1248 flow [2022-09-20 22:50:33,596 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1248, PETRI_PLACES=450, PETRI_TRANSITIONS=369} [2022-09-20 22:50:33,597 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 136 predicate places. [2022-09-20 22:50:33,597 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 369 transitions, 1248 flow [2022-09-20 22:50:33,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:33,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:33,597 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:50:33,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 22:50:33,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:50:33,811 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 22:50:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1180142022, now seen corresponding path program 1 times [2022-09-20 22:50:33,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:33,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445286256] [2022-09-20 22:50:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:33,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:50:33,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:33,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445286256] [2022-09-20 22:50:33,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445286256] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:33,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:33,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-20 22:50:33,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296993690] [2022-09-20 22:50:33,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:33,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-20 22:50:33,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-20 22:50:33,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-09-20 22:50:33,971 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 353 [2022-09-20 22:50:33,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 369 transitions, 1248 flow. Second operand has 17 states, 17 states have (on average 254.94117647058823) internal successors, (4334), 17 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:33,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:33,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 353 [2022-09-20 22:50:33,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:45,681 INFO L130 PetriNetUnfolder]: 14532/51414 cut-off events. [2022-09-20 22:50:45,682 INFO L131 PetriNetUnfolder]: For 26360/27694 co-relation queries the response was YES. [2022-09-20 22:50:46,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108314 conditions, 51414 events. 14532/51414 cut-off events. For 26360/27694 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 669340 event pairs, 5883 based on Foata normal form. 671/51176 useless extension candidates. Maximal degree in co-relation 108253. Up to 13383 conditions per place. [2022-09-20 22:50:46,476 INFO L137 encePairwiseOnDemand]: 331/353 looper letters, 491 selfloop transitions, 62 changer transitions 0/822 dead transitions. [2022-09-20 22:50:46,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 822 transitions, 4078 flow [2022-09-20 22:50:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-09-20 22:50:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-09-20 22:50:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 10794 transitions. [2022-09-20 22:50:46,483 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7458025288468182 [2022-09-20 22:50:46,483 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 10794 transitions. [2022-09-20 22:50:46,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 10794 transitions. [2022-09-20 22:50:46,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:46,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 10794 transitions. [2022-09-20 22:50:46,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 263.2682926829268) internal successors, (10794), 41 states have internal predecessors, (10794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:46,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 353.0) internal successors, (14826), 42 states have internal predecessors, (14826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:46,500 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 353.0) internal successors, (14826), 42 states have internal predecessors, (14826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:46,500 INFO L175 Difference]: Start difference. First operand has 450 places, 369 transitions, 1248 flow. Second operand 41 states and 10794 transitions. [2022-09-20 22:50:46,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 822 transitions, 4078 flow [2022-09-20 22:50:47,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 822 transitions, 3840 flow, removed 102 selfloop flow, removed 28 redundant places. [2022-09-20 22:50:47,164 INFO L231 Difference]: Finished difference. Result has 449 places, 424 transitions, 1612 flow [2022-09-20 22:50:47,164 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1612, PETRI_PLACES=449, PETRI_TRANSITIONS=424} [2022-09-20 22:50:47,164 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 135 predicate places. [2022-09-20 22:50:47,164 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 424 transitions, 1612 flow [2022-09-20 22:50:47,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 254.94117647058823) internal successors, (4334), 17 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:47,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:47,165 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:50:47,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-20 22:50:47,165 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 22:50:47,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:47,166 INFO L85 PathProgramCache]: Analyzing trace with hash -921011036, now seen corresponding path program 2 times [2022-09-20 22:50:47,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:47,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139849213] [2022-09-20 22:50:47,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:47,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:50:47,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:47,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139849213] [2022-09-20 22:50:47,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139849213] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:47,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:47,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-20 22:50:47,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452135666] [2022-09-20 22:50:47,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:47,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-20 22:50:47,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:47,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-20 22:50:47,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-09-20 22:50:47,300 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 353 [2022-09-20 22:50:47,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 424 transitions, 1612 flow. Second operand has 17 states, 17 states have (on average 254.94117647058823) internal successors, (4334), 17 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:47,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:47,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 353 [2022-09-20 22:50:47,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:59,677 INFO L130 PetriNetUnfolder]: 14901/53731 cut-off events. [2022-09-20 22:50:59,677 INFO L131 PetriNetUnfolder]: For 51888/53469 co-relation queries the response was YES. [2022-09-20 22:51:00,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130143 conditions, 53731 events. 14901/53731 cut-off events. For 51888/53469 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 703839 event pairs, 6085 based on Foata normal form. 697/51443 useless extension candidates. Maximal degree in co-relation 130073. Up to 13494 conditions per place. [2022-09-20 22:51:00,960 INFO L137 encePairwiseOnDemand]: 331/353 looper letters, 533 selfloop transitions, 96 changer transitions 0/898 dead transitions. [2022-09-20 22:51:00,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 898 transitions, 5066 flow [2022-09-20 22:51:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-09-20 22:51:00,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-09-20 22:51:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 10787 transitions. [2022-09-20 22:51:00,969 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7453188696192911 [2022-09-20 22:51:00,969 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 10787 transitions. [2022-09-20 22:51:00,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 10787 transitions. [2022-09-20 22:51:00,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:51:00,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 10787 transitions. [2022-09-20 22:51:00,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 263.0975609756098) internal successors, (10787), 41 states have internal predecessors, (10787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:51:00,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 353.0) internal successors, (14826), 42 states have internal predecessors, (14826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:51:00,995 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 353.0) internal successors, (14826), 42 states have internal predecessors, (14826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:51:00,996 INFO L175 Difference]: Start difference. First operand has 449 places, 424 transitions, 1612 flow. Second operand 41 states and 10787 transitions. [2022-09-20 22:51:00,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 898 transitions, 5066 flow [2022-09-20 22:51:02,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 898 transitions, 4889 flow, removed 25 selfloop flow, removed 5 redundant places. [2022-09-20 22:51:02,230 INFO L231 Difference]: Finished difference. Result has 514 places, 480 transitions, 2324 flow [2022-09-20 22:51:02,231 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2324, PETRI_PLACES=514, PETRI_TRANSITIONS=480} [2022-09-20 22:51:02,231 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 200 predicate places. [2022-09-20 22:51:02,231 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 480 transitions, 2324 flow [2022-09-20 22:51:02,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 254.94117647058823) internal successors, (4334), 17 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:51:02,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:51:02,232 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:51:02,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-20 22:51:02,232 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 22:51:02,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:51:02,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1555376216, now seen corresponding path program 3 times [2022-09-20 22:51:02,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:51:02,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447230101] [2022-09-20 22:51:02,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:51:02,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:51:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:51:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:51:02,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:51:02,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447230101] [2022-09-20 22:51:02,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447230101] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:51:02,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:51:02,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-20 22:51:02,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312961879] [2022-09-20 22:51:02,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:51:02,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-20 22:51:02,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:51:02,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-20 22:51:02,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-09-20 22:51:02,391 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 353 [2022-09-20 22:51:02,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 480 transitions, 2324 flow. Second operand has 17 states, 17 states have (on average 254.94117647058823) internal successors, (4334), 17 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:51:02,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:51:02,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 353 [2022-09-20 22:51:02,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:51:18,624 INFO L130 PetriNetUnfolder]: 15913/58378 cut-off events. [2022-09-20 22:51:18,624 INFO L131 PetriNetUnfolder]: For 119384/120865 co-relation queries the response was YES. [2022-09-20 22:51:20,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162530 conditions, 58378 events. 15913/58378 cut-off events. For 119384/120865 co-relation queries the response was YES. Maximal size of possible extension queue 1095. Compared 777533 event pairs, 6114 based on Foata normal form. 671/56121 useless extension candidates. Maximal degree in co-relation 162429. Up to 13377 conditions per place. [2022-09-20 22:51:20,233 INFO L137 encePairwiseOnDemand]: 331/353 looper letters, 506 selfloop transitions, 110 changer transitions 0/885 dead transitions. [2022-09-20 22:51:20,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 885 transitions, 6358 flow [2022-09-20 22:51:20,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-20 22:51:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-09-20 22:51:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 10500 transitions. [2022-09-20 22:51:20,240 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7436260623229461 [2022-09-20 22:51:20,240 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 10500 transitions. [2022-09-20 22:51:20,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 10500 transitions. [2022-09-20 22:51:20,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:51:20,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 10500 transitions. [2022-09-20 22:51:20,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 262.5) internal successors, (10500), 40 states have internal predecessors, (10500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:51:20,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 353.0) internal successors, (14473), 41 states have internal predecessors, (14473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:51:20,255 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 353.0) internal successors, (14473), 41 states have internal predecessors, (14473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:51:20,255 INFO L175 Difference]: Start difference. First operand has 514 places, 480 transitions, 2324 flow. Second operand 40 states and 10500 transitions. [2022-09-20 22:51:20,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 885 transitions, 6358 flow [2022-09-20 22:51:22,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 885 transitions, 5919 flow, removed 141 selfloop flow, removed 5 redundant places. [2022-09-20 22:51:22,473 INFO L231 Difference]: Finished difference. Result has 576 places, 532 transitions, 3110 flow [2022-09-20 22:51:22,474 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3110, PETRI_PLACES=576, PETRI_TRANSITIONS=532} [2022-09-20 22:51:22,474 INFO L287 CegarLoopForPetriNet]: 314 programPoint places, 262 predicate places. [2022-09-20 22:51:22,474 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 532 transitions, 3110 flow [2022-09-20 22:51:22,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 254.94117647058823) internal successors, (4334), 17 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:51:22,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:51:22,475 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:51:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-09-20 22:51:22,475 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 22:51:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:51:22,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1839271368, now seen corresponding path program 4 times [2022-09-20 22:51:22,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:51:22,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152826697] [2022-09-20 22:51:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:51:22,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:51:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:51:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:51:22,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:51:22,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152826697] [2022-09-20 22:51:22,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152826697] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:51:22,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:51:22,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-20 22:51:22,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141342749] [2022-09-20 22:51:22,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:51:22,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-20 22:51:22,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:51:22,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-20 22:51:22,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-09-20 22:51:22,606 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 353 [2022-09-20 22:51:22,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 532 transitions, 3110 flow. Second operand has 17 states, 17 states have (on average 254.94117647058823) internal successors, (4334), 17 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:51:22,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:51:22,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 353 [2022-09-20 22:51:22,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand