/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/security.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 20:11:01,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 20:11:01,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 20:11:01,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 20:11:01,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 20:11:01,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 20:11:01,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 20:11:01,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 20:11:01,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 20:11:01,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 20:11:01,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 20:11:01,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 20:11:01,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 20:11:01,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 20:11:01,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 20:11:01,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 20:11:01,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 20:11:01,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 20:11:01,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 20:11:01,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 20:11:01,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 20:11:01,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 20:11:01,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 20:11:01,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 20:11:01,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 20:11:01,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 20:11:01,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 20:11:01,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 20:11:01,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 20:11:01,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 20:11:01,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 20:11:01,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 20:11:01,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 20:11:01,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 20:11:01,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 20:11:01,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 20:11:01,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 20:11:01,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 20:11:01,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 20:11:01,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 20:11:01,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 20:11:01,692 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 [2022-12-11 20:11:01,708 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 20:11:01,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 20:11:01,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 20:11:01,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 20:11:01,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 20:11:01,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 20:11:01,710 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 20:11:01,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 20:11:01,710 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 20:11:01,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 20:11:01,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 20:11:01,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 20:11:01,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 20:11:01,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 20:11:01,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 20:11:01,711 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 20:11:01,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 20:11:01,711 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 20:11:01,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 20:11:01,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 20:11:01,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 20:11:01,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 20:11:01,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 20:11:01,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:11:01,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 20:11:01,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 20:11:01,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 20:11:01,712 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 20:11:01,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 20:11:01,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 20:11:01,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 20:11:01,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 20:11:01,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 20:11:01,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 20:11:01,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 20:11:01,984 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 20:11:01,984 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 20:11:01,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/security.wvr.c [2022-12-11 20:11:02,987 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 20:11:03,132 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 20:11:03,133 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/security.wvr.c [2022-12-11 20:11:03,138 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd82d94c8/deee66a6aa1c4d0e873cfbe019bdc5a3/FLAG3c077071b [2022-12-11 20:11:03,155 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd82d94c8/deee66a6aa1c4d0e873cfbe019bdc5a3 [2022-12-11 20:11:03,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 20:11:03,158 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 20:11:03,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 20:11:03,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 20:11:03,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 20:11:03,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4782a014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03, skipping insertion in model container [2022-12-11 20:11:03,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 20:11:03,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 20:11:03,318 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/security.wvr.c[1931,1944] [2022-12-11 20:11:03,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:11:03,328 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 20:11:03,346 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/security.wvr.c[1931,1944] [2022-12-11 20:11:03,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:11:03,360 INFO L208 MainTranslator]: Completed translation [2022-12-11 20:11:03,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03 WrapperNode [2022-12-11 20:11:03,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 20:11:03,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 20:11:03,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 20:11:03,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 20:11:03,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,387 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-12-11 20:11:03,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 20:11:03,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 20:11:03,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 20:11:03,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 20:11:03,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,413 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 20:11:03,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 20:11:03,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 20:11:03,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 20:11:03,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03" (1/1) ... [2022-12-11 20:11:03,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:11:03,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:11:03,438 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) [2022-12-11 20:11:03,444 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 [2022-12-11 20:11:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 20:11:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 20:11:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 20:11:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 20:11:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 20:11:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 20:11:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 20:11:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 20:11:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 20:11:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 20:11:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 20:11:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 20:11:03,467 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 20:11:03,547 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 20:11:03,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 20:11:03,657 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 20:11:03,662 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 20:11:03,662 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-11 20:11:03,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:11:03 BoogieIcfgContainer [2022-12-11 20:11:03,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 20:11:03,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 20:11:03,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 20:11:03,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 20:11:03,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 08:11:03" (1/3) ... [2022-12-11 20:11:03,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c48415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:11:03, skipping insertion in model container [2022-12-11 20:11:03,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:03" (2/3) ... [2022-12-11 20:11:03,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c48415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:11:03, skipping insertion in model container [2022-12-11 20:11:03,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:11:03" (3/3) ... [2022-12-11 20:11:03,669 INFO L112 eAbstractionObserver]: Analyzing ICFG security.wvr.c [2022-12-11 20:11:03,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 20:11:03,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 20:11:03,681 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 20:11:03,730 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 20:11:03,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 76 transitions, 168 flow [2022-12-11 20:11:03,792 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-12-11 20:11:03,792 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 20:11:03,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 74 events. 3/74 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2022-12-11 20:11:03,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 76 transitions, 168 flow [2022-12-11 20:11:03,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 66 transitions, 144 flow [2022-12-11 20:11:03,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 20:11:03,809 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;@36102a8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 20:11:03,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 20:11:03,832 INFO L130 PetriNetUnfolder]: 3/65 cut-off events. [2022-12-11 20:11:03,833 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 20:11:03,833 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:03,833 INFO L214 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] [2022-12-11 20:11:03,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:03,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:03,844 INFO L85 PathProgramCache]: Analyzing trace with hash -143397957, now seen corresponding path program 1 times [2022-12-11 20:11:03,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:03,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086866221] [2022-12-11 20:11:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:03,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:04,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:04,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086866221] [2022-12-11 20:11:04,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086866221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:04,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:04,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 20:11:04,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825311259] [2022-12-11 20:11:04,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:04,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 20:11:04,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:04,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 20:11:04,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-11 20:11:04,597 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 76 [2022-12-11 20:11:04,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 144 flow. Second operand has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:04,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:04,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 76 [2022-12-11 20:11:04,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:04,754 INFO L130 PetriNetUnfolder]: 19/140 cut-off events. [2022-12-11 20:11:04,754 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-12-11 20:11:04,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 140 events. 19/140 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 382 event pairs, 8 based on Foata normal form. 3/137 useless extension candidates. Maximal degree in co-relation 123. Up to 39 conditions per place. [2022-12-11 20:11:04,756 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 31 selfloop transitions, 2 changer transitions 10/87 dead transitions. [2022-12-11 20:11:04,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 87 transitions, 287 flow [2022-12-11 20:11:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 577 transitions. [2022-12-11 20:11:04,767 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7592105263157894 [2022-12-11 20:11:04,768 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 144 flow. Second operand 10 states and 577 transitions. [2022-12-11 20:11:04,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 87 transitions, 287 flow [2022-12-11 20:11:04,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 87 transitions, 269 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-11 20:11:04,773 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 153 flow [2022-12-11 20:11:04,775 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=153, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2022-12-11 20:11:04,777 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 11 predicate places. [2022-12-11 20:11:04,778 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 153 flow [2022-12-11 20:11:04,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:04,778 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:04,778 INFO L214 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] [2022-12-11 20:11:04,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 20:11:04,779 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:04,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash 65468873, now seen corresponding path program 2 times [2022-12-11 20:11:04,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:04,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837410581] [2022-12-11 20:11:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:04,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:05,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:05,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837410581] [2022-12-11 20:11:05,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837410581] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:05,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:05,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 20:11:05,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667740442] [2022-12-11 20:11:05,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:05,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 20:11:05,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:05,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 20:11:05,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-11 20:11:05,062 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 76 [2022-12-11 20:11:05,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 153 flow. Second operand has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:05,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:05,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 76 [2022-12-11 20:11:05,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:05,266 INFO L130 PetriNetUnfolder]: 27/217 cut-off events. [2022-12-11 20:11:05,266 INFO L131 PetriNetUnfolder]: For 75/76 co-relation queries the response was YES. [2022-12-11 20:11:05,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 217 events. 27/217 cut-off events. For 75/76 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 942 event pairs, 14 based on Foata normal form. 2/213 useless extension candidates. Maximal degree in co-relation 367. Up to 54 conditions per place. [2022-12-11 20:11:05,270 INFO L137 encePairwiseOnDemand]: 69/76 looper letters, 35 selfloop transitions, 2 changer transitions 8/89 dead transitions. [2022-12-11 20:11:05,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 89 transitions, 332 flow [2022-12-11 20:11:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 20:11:05,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 20:11:05,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2022-12-11 20:11:05,273 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7680921052631579 [2022-12-11 20:11:05,274 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 153 flow. Second operand 8 states and 467 transitions. [2022-12-11 20:11:05,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 89 transitions, 332 flow [2022-12-11 20:11:05,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 89 transitions, 309 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-12-11 20:11:05,285 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 165 flow [2022-12-11 20:11:05,286 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=165, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2022-12-11 20:11:05,286 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2022-12-11 20:11:05,286 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 165 flow [2022-12-11 20:11:05,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:05,287 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:05,287 INFO L214 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] [2022-12-11 20:11:05,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 20:11:05,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:05,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:05,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1804684525, now seen corresponding path program 3 times [2022-12-11 20:11:05,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:05,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071410915] [2022-12-11 20:11:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:05,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:05,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:05,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:05,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071410915] [2022-12-11 20:11:05,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071410915] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:05,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:05,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 20:11:05,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877643794] [2022-12-11 20:11:05,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:05,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 20:11:05,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:05,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 20:11:05,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-11 20:11:05,520 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 76 [2022-12-11 20:11:05,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 165 flow. Second operand has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:05,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:05,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 76 [2022-12-11 20:11:05,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:05,667 INFO L130 PetriNetUnfolder]: 25/237 cut-off events. [2022-12-11 20:11:05,667 INFO L131 PetriNetUnfolder]: For 141/143 co-relation queries the response was YES. [2022-12-11 20:11:05,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 237 events. 25/237 cut-off events. For 141/143 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1120 event pairs, 21 based on Foata normal form. 1/229 useless extension candidates. Maximal degree in co-relation 422. Up to 54 conditions per place. [2022-12-11 20:11:05,671 INFO L137 encePairwiseOnDemand]: 69/76 looper letters, 39 selfloop transitions, 3 changer transitions 6/92 dead transitions. [2022-12-11 20:11:05,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 92 transitions, 363 flow [2022-12-11 20:11:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 20:11:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 20:11:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 471 transitions. [2022-12-11 20:11:05,672 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.774671052631579 [2022-12-11 20:11:05,672 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 165 flow. Second operand 8 states and 471 transitions. [2022-12-11 20:11:05,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 92 transitions, 363 flow [2022-12-11 20:11:05,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 92 transitions, 334 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-12-11 20:11:05,675 INFO L231 Difference]: Finished difference. Result has 86 places, 68 transitions, 191 flow [2022-12-11 20:11:05,676 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=86, PETRI_TRANSITIONS=68} [2022-12-11 20:11:05,678 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2022-12-11 20:11:05,679 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 68 transitions, 191 flow [2022-12-11 20:11:05,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:05,679 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:05,679 INFO L214 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] [2022-12-11 20:11:05,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 20:11:05,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1739631666, now seen corresponding path program 1 times [2022-12-11 20:11:05,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:05,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645432752] [2022-12-11 20:11:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:05,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:05,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:05,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645432752] [2022-12-11 20:11:05,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645432752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:05,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:05,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:05,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57668328] [2022-12-11 20:11:05,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:05,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:05,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:05,872 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:05,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 68 transitions, 191 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:05,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:05,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:05,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:06,101 INFO L130 PetriNetUnfolder]: 34/321 cut-off events. [2022-12-11 20:11:06,101 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2022-12-11 20:11:06,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 321 events. 34/321 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1848 event pairs, 19 based on Foata normal form. 3/314 useless extension candidates. Maximal degree in co-relation 616. Up to 62 conditions per place. [2022-12-11 20:11:06,103 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 48 selfloop transitions, 4 changer transitions 19/113 dead transitions. [2022-12-11 20:11:06,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 113 transitions, 524 flow [2022-12-11 20:11:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-11 20:11:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-11 20:11:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 783 transitions. [2022-12-11 20:11:06,105 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7359022556390977 [2022-12-11 20:11:06,105 INFO L175 Difference]: Start difference. First operand has 86 places, 68 transitions, 191 flow. Second operand 14 states and 783 transitions. [2022-12-11 20:11:06,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 113 transitions, 524 flow [2022-12-11 20:11:06,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 113 transitions, 491 flow, removed 16 selfloop flow, removed 4 redundant places. [2022-12-11 20:11:06,112 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 213 flow [2022-12-11 20:11:06,112 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=213, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2022-12-11 20:11:06,113 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 33 predicate places. [2022-12-11 20:11:06,113 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 213 flow [2022-12-11 20:11:06,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:06,113 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:06,114 INFO L214 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] [2022-12-11 20:11:06,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 20:11:06,114 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:06,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:06,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1680638929, now seen corresponding path program 4 times [2022-12-11 20:11:06,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:06,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455764732] [2022-12-11 20:11:06,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:06,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:06,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:06,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455764732] [2022-12-11 20:11:06,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455764732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:06,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:06,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 20:11:06,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569542707] [2022-12-11 20:11:06,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:06,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 20:11:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 20:11:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-11 20:11:06,260 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 76 [2022-12-11 20:11:06,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 213 flow. Second operand has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:06,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:06,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 76 [2022-12-11 20:11:06,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:06,363 INFO L130 PetriNetUnfolder]: 25/253 cut-off events. [2022-12-11 20:11:06,363 INFO L131 PetriNetUnfolder]: For 308/311 co-relation queries the response was YES. [2022-12-11 20:11:06,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 253 events. 25/253 cut-off events. For 308/311 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1276 event pairs, 18 based on Foata normal form. 2/247 useless extension candidates. Maximal degree in co-relation 527. Up to 84 conditions per place. [2022-12-11 20:11:06,365 INFO L137 encePairwiseOnDemand]: 69/76 looper letters, 38 selfloop transitions, 3 changer transitions 6/92 dead transitions. [2022-12-11 20:11:06,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 92 transitions, 424 flow [2022-12-11 20:11:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 20:11:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 20:11:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 469 transitions. [2022-12-11 20:11:06,366 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7713815789473685 [2022-12-11 20:11:06,366 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 213 flow. Second operand 8 states and 469 transitions. [2022-12-11 20:11:06,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 92 transitions, 424 flow [2022-12-11 20:11:06,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 357 flow, removed 31 selfloop flow, removed 11 redundant places. [2022-12-11 20:11:06,368 INFO L231 Difference]: Finished difference. Result has 95 places, 71 transitions, 228 flow [2022-12-11 20:11:06,369 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=228, PETRI_PLACES=95, PETRI_TRANSITIONS=71} [2022-12-11 20:11:06,369 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 25 predicate places. [2022-12-11 20:11:06,369 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 71 transitions, 228 flow [2022-12-11 20:11:06,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:06,370 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:06,370 INFO L214 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] [2022-12-11 20:11:06,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 20:11:06,370 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1742050418, now seen corresponding path program 2 times [2022-12-11 20:11:06,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:06,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037338848] [2022-12-11 20:11:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:06,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:06,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:06,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037338848] [2022-12-11 20:11:06,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037338848] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:06,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:06,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:06,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588851153] [2022-12-11 20:11:06,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:06,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:06,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:06,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:06,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:06,502 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:06,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 71 transitions, 228 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:06,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:06,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:06,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:06,647 INFO L130 PetriNetUnfolder]: 29/292 cut-off events. [2022-12-11 20:11:06,647 INFO L131 PetriNetUnfolder]: For 249/249 co-relation queries the response was YES. [2022-12-11 20:11:06,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 292 events. 29/292 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1605 event pairs, 4 based on Foata normal form. 1/285 useless extension candidates. Maximal degree in co-relation 593. Up to 75 conditions per place. [2022-12-11 20:11:06,649 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 39 selfloop transitions, 9 changer transitions 6/96 dead transitions. [2022-12-11 20:11:06,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 461 flow [2022-12-11 20:11:06,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 504 transitions. [2022-12-11 20:11:06,650 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2022-12-11 20:11:06,650 INFO L175 Difference]: Start difference. First operand has 95 places, 71 transitions, 228 flow. Second operand 9 states and 504 transitions. [2022-12-11 20:11:06,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 461 flow [2022-12-11 20:11:06,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 442 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-11 20:11:06,653 INFO L231 Difference]: Finished difference. Result has 102 places, 73 transitions, 281 flow [2022-12-11 20:11:06,653 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=281, PETRI_PLACES=102, PETRI_TRANSITIONS=73} [2022-12-11 20:11:06,653 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 32 predicate places. [2022-12-11 20:11:06,654 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 73 transitions, 281 flow [2022-12-11 20:11:06,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:06,654 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:06,654 INFO L214 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] [2022-12-11 20:11:06,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 20:11:06,654 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:06,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:06,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1317083358, now seen corresponding path program 3 times [2022-12-11 20:11:06,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:06,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001678426] [2022-12-11 20:11:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:06,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:06,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:06,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001678426] [2022-12-11 20:11:06,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001678426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:06,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:06,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:06,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817296282] [2022-12-11 20:11:06,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:06,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:06,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:06,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:06,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:06,796 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:06,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 73 transitions, 281 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:06,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:06,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:06,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:06,951 INFO L130 PetriNetUnfolder]: 29/308 cut-off events. [2022-12-11 20:11:06,952 INFO L131 PetriNetUnfolder]: For 455/457 co-relation queries the response was YES. [2022-12-11 20:11:06,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 308 events. 29/308 cut-off events. For 455/457 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1767 event pairs, 19 based on Foata normal form. 1/299 useless extension candidates. Maximal degree in co-relation 674. Up to 62 conditions per place. [2022-12-11 20:11:06,953 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 37 selfloop transitions, 7 changer transitions 11/97 dead transitions. [2022-12-11 20:11:06,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 97 transitions, 511 flow [2022-12-11 20:11:06,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:06,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 506 transitions. [2022-12-11 20:11:06,954 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7397660818713451 [2022-12-11 20:11:06,954 INFO L175 Difference]: Start difference. First operand has 102 places, 73 transitions, 281 flow. Second operand 9 states and 506 transitions. [2022-12-11 20:11:06,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 97 transitions, 511 flow [2022-12-11 20:11:06,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 97 transitions, 476 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-12-11 20:11:06,957 INFO L231 Difference]: Finished difference. Result has 108 places, 73 transitions, 292 flow [2022-12-11 20:11:06,958 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=292, PETRI_PLACES=108, PETRI_TRANSITIONS=73} [2022-12-11 20:11:06,958 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 38 predicate places. [2022-12-11 20:11:06,958 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 73 transitions, 292 flow [2022-12-11 20:11:06,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:06,959 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:06,959 INFO L214 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] [2022-12-11 20:11:06,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 20:11:06,959 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:06,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:06,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1324304822, now seen corresponding path program 4 times [2022-12-11 20:11:06,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:06,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330746114] [2022-12-11 20:11:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:06,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:07,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:07,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330746114] [2022-12-11 20:11:07,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330746114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:07,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:07,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:07,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667816929] [2022-12-11 20:11:07,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:07,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:07,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:07,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:07,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:07,129 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:07,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 73 transitions, 292 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:07,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:07,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:07,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:07,277 INFO L130 PetriNetUnfolder]: 25/288 cut-off events. [2022-12-11 20:11:07,277 INFO L131 PetriNetUnfolder]: For 454/456 co-relation queries the response was YES. [2022-12-11 20:11:07,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 288 events. 25/288 cut-off events. For 454/456 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1581 event pairs, 6 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 645. Up to 70 conditions per place. [2022-12-11 20:11:07,279 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 47 selfloop transitions, 7 changer transitions 7/103 dead transitions. [2022-12-11 20:11:07,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 103 transitions, 578 flow [2022-12-11 20:11:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 510 transitions. [2022-12-11 20:11:07,280 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7456140350877193 [2022-12-11 20:11:07,280 INFO L175 Difference]: Start difference. First operand has 108 places, 73 transitions, 292 flow. Second operand 9 states and 510 transitions. [2022-12-11 20:11:07,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 103 transitions, 578 flow [2022-12-11 20:11:07,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 103 transitions, 532 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-12-11 20:11:07,283 INFO L231 Difference]: Finished difference. Result has 111 places, 76 transitions, 338 flow [2022-12-11 20:11:07,283 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=338, PETRI_PLACES=111, PETRI_TRANSITIONS=76} [2022-12-11 20:11:07,285 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 41 predicate places. [2022-12-11 20:11:07,285 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 76 transitions, 338 flow [2022-12-11 20:11:07,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:07,286 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:07,286 INFO L214 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] [2022-12-11 20:11:07,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 20:11:07,286 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:07,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:07,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1313235012, now seen corresponding path program 5 times [2022-12-11 20:11:07,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:07,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473899391] [2022-12-11 20:11:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:07,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:07,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:07,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473899391] [2022-12-11 20:11:07,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473899391] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:07,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:07,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:07,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868700290] [2022-12-11 20:11:07,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:07,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:07,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:07,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:07,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:07,413 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:07,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 76 transitions, 338 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:07,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:07,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:07,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:07,533 INFO L130 PetriNetUnfolder]: 25/278 cut-off events. [2022-12-11 20:11:07,533 INFO L131 PetriNetUnfolder]: For 497/499 co-relation queries the response was YES. [2022-12-11 20:11:07,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 278 events. 25/278 cut-off events. For 497/499 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1523 event pairs, 20 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 649. Up to 62 conditions per place. [2022-12-11 20:11:07,534 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 44 selfloop transitions, 6 changer transitions 9/101 dead transitions. [2022-12-11 20:11:07,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 577 flow [2022-12-11 20:11:07,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 510 transitions. [2022-12-11 20:11:07,536 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7456140350877193 [2022-12-11 20:11:07,536 INFO L175 Difference]: Start difference. First operand has 111 places, 76 transitions, 338 flow. Second operand 9 states and 510 transitions. [2022-12-11 20:11:07,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 577 flow [2022-12-11 20:11:07,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 101 transitions, 545 flow, removed 15 selfloop flow, removed 4 redundant places. [2022-12-11 20:11:07,539 INFO L231 Difference]: Finished difference. Result has 118 places, 76 transitions, 349 flow [2022-12-11 20:11:07,539 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=349, PETRI_PLACES=118, PETRI_TRANSITIONS=76} [2022-12-11 20:11:07,539 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 48 predicate places. [2022-12-11 20:11:07,540 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 76 transitions, 349 flow [2022-12-11 20:11:07,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:07,540 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:07,540 INFO L214 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] [2022-12-11 20:11:07,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-11 20:11:07,540 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:07,541 INFO L85 PathProgramCache]: Analyzing trace with hash 976587270, now seen corresponding path program 6 times [2022-12-11 20:11:07,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:07,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736620522] [2022-12-11 20:11:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:07,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:07,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:07,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736620522] [2022-12-11 20:11:07,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736620522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:07,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:07,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:07,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057994291] [2022-12-11 20:11:07,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:07,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:07,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:07,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:07,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:07,676 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:07,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 76 transitions, 349 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:07,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:07,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:07,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:07,811 INFO L130 PetriNetUnfolder]: 23/254 cut-off events. [2022-12-11 20:11:07,811 INFO L131 PetriNetUnfolder]: For 516/516 co-relation queries the response was YES. [2022-12-11 20:11:07,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 254 events. 23/254 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1310 event pairs, 20 based on Foata normal form. 1/246 useless extension candidates. Maximal degree in co-relation 604. Up to 62 conditions per place. [2022-12-11 20:11:07,812 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 35 selfloop transitions, 3 changer transitions 13/93 dead transitions. [2022-12-11 20:11:07,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 93 transitions, 540 flow [2022-12-11 20:11:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 503 transitions. [2022-12-11 20:11:07,814 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7353801169590644 [2022-12-11 20:11:07,814 INFO L175 Difference]: Start difference. First operand has 118 places, 76 transitions, 349 flow. Second operand 9 states and 503 transitions. [2022-12-11 20:11:07,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 93 transitions, 540 flow [2022-12-11 20:11:07,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 93 transitions, 497 flow, removed 13 selfloop flow, removed 9 redundant places. [2022-12-11 20:11:07,817 INFO L231 Difference]: Finished difference. Result has 117 places, 72 transitions, 293 flow [2022-12-11 20:11:07,817 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=293, PETRI_PLACES=117, PETRI_TRANSITIONS=72} [2022-12-11 20:11:07,817 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 47 predicate places. [2022-12-11 20:11:07,818 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 72 transitions, 293 flow [2022-12-11 20:11:07,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:07,818 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:07,818 INFO L214 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] [2022-12-11 20:11:07,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-11 20:11:07,818 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:07,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:07,819 INFO L85 PathProgramCache]: Analyzing trace with hash 81749106, now seen corresponding path program 7 times [2022-12-11 20:11:07,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:07,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360751433] [2022-12-11 20:11:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:07,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:07,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:07,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360751433] [2022-12-11 20:11:07,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360751433] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:07,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:07,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:07,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248243079] [2022-12-11 20:11:07,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:07,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:07,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:07,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:07,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:07,954 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:07,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 72 transitions, 293 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:07,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:07,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:07,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:08,085 INFO L130 PetriNetUnfolder]: 21/230 cut-off events. [2022-12-11 20:11:08,085 INFO L131 PetriNetUnfolder]: For 388/388 co-relation queries the response was YES. [2022-12-11 20:11:08,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 230 events. 21/230 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1092 event pairs, 6 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 514. Up to 45 conditions per place. [2022-12-11 20:11:08,086 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 42 selfloop transitions, 5 changer transitions 8/97 dead transitions. [2022-12-11 20:11:08,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 97 transitions, 510 flow [2022-12-11 20:11:08,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:08,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:08,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 509 transitions. [2022-12-11 20:11:08,088 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7441520467836257 [2022-12-11 20:11:08,088 INFO L175 Difference]: Start difference. First operand has 117 places, 72 transitions, 293 flow. Second operand 9 states and 509 transitions. [2022-12-11 20:11:08,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 97 transitions, 510 flow [2022-12-11 20:11:08,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 458 flow, removed 19 selfloop flow, removed 11 redundant places. [2022-12-11 20:11:08,091 INFO L231 Difference]: Finished difference. Result has 109 places, 72 transitions, 285 flow [2022-12-11 20:11:08,091 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=285, PETRI_PLACES=109, PETRI_TRANSITIONS=72} [2022-12-11 20:11:08,092 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 39 predicate places. [2022-12-11 20:11:08,092 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 72 transitions, 285 flow [2022-12-11 20:11:08,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:08,092 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:08,092 INFO L214 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] [2022-12-11 20:11:08,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-11 20:11:08,092 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:08,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2061117049, now seen corresponding path program 5 times [2022-12-11 20:11:08,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:08,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424941167] [2022-12-11 20:11:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:08,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:08,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:08,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:08,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424941167] [2022-12-11 20:11:08,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424941167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:08,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:08,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 20:11:08,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215208221] [2022-12-11 20:11:08,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:08,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 20:11:08,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:08,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 20:11:08,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-11 20:11:08,226 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 76 [2022-12-11 20:11:08,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 72 transitions, 285 flow. Second operand has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:08,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:08,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 76 [2022-12-11 20:11:08,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:08,339 INFO L130 PetriNetUnfolder]: 17/193 cut-off events. [2022-12-11 20:11:08,339 INFO L131 PetriNetUnfolder]: For 280/280 co-relation queries the response was YES. [2022-12-11 20:11:08,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 193 events. 17/193 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 797 event pairs, 11 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 436. Up to 63 conditions per place. [2022-12-11 20:11:08,340 INFO L137 encePairwiseOnDemand]: 69/76 looper letters, 33 selfloop transitions, 1 changer transitions 10/88 dead transitions. [2022-12-11 20:11:08,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 88 transitions, 440 flow [2022-12-11 20:11:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 20:11:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 20:11:08,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 464 transitions. [2022-12-11 20:11:08,342 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2022-12-11 20:11:08,342 INFO L175 Difference]: Start difference. First operand has 109 places, 72 transitions, 285 flow. Second operand 8 states and 464 transitions. [2022-12-11 20:11:08,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 88 transitions, 440 flow [2022-12-11 20:11:08,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 88 transitions, 410 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-12-11 20:11:08,344 INFO L231 Difference]: Finished difference. Result has 108 places, 70 transitions, 240 flow [2022-12-11 20:11:08,344 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=240, PETRI_PLACES=108, PETRI_TRANSITIONS=70} [2022-12-11 20:11:08,344 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 38 predicate places. [2022-12-11 20:11:08,345 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 70 transitions, 240 flow [2022-12-11 20:11:08,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:08,345 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:08,345 INFO L214 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] [2022-12-11 20:11:08,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-11 20:11:08,345 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:08,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:08,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1453347490, now seen corresponding path program 8 times [2022-12-11 20:11:08,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:08,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303836993] [2022-12-11 20:11:08,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:08,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:08,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:08,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303836993] [2022-12-11 20:11:08,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303836993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:08,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:08,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:08,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585385248] [2022-12-11 20:11:08,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:08,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:08,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:08,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:08,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:08,471 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:08,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 70 transitions, 240 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:08,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:08,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:08,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:08,597 INFO L130 PetriNetUnfolder]: 20/185 cut-off events. [2022-12-11 20:11:08,597 INFO L131 PetriNetUnfolder]: For 230/230 co-relation queries the response was YES. [2022-12-11 20:11:08,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 185 events. 20/185 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 725 event pairs, 6 based on Foata normal form. 1/181 useless extension candidates. Maximal degree in co-relation 403. Up to 45 conditions per place. [2022-12-11 20:11:08,598 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 31 selfloop transitions, 3 changer transitions 12/88 dead transitions. [2022-12-11 20:11:08,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 88 transitions, 403 flow [2022-12-11 20:11:08,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:08,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 502 transitions. [2022-12-11 20:11:08,600 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7339181286549707 [2022-12-11 20:11:08,600 INFO L175 Difference]: Start difference. First operand has 108 places, 70 transitions, 240 flow. Second operand 9 states and 502 transitions. [2022-12-11 20:11:08,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 88 transitions, 403 flow [2022-12-11 20:11:08,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 88 transitions, 378 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-12-11 20:11:08,602 INFO L231 Difference]: Finished difference. Result has 105 places, 66 transitions, 199 flow [2022-12-11 20:11:08,602 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=199, PETRI_PLACES=105, PETRI_TRANSITIONS=66} [2022-12-11 20:11:08,602 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2022-12-11 20:11:08,602 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 66 transitions, 199 flow [2022-12-11 20:11:08,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:08,603 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:08,603 INFO L214 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] [2022-12-11 20:11:08,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-11 20:11:08,603 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:08,603 INFO L85 PathProgramCache]: Analyzing trace with hash -40571058, now seen corresponding path program 9 times [2022-12-11 20:11:08,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:08,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538837892] [2022-12-11 20:11:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:08,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:08,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:08,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538837892] [2022-12-11 20:11:08,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538837892] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:08,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:08,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:08,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436978473] [2022-12-11 20:11:08,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:08,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:08,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:08,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:08,769 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:08,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 66 transitions, 199 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:08,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:08,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:08,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:08,916 INFO L130 PetriNetUnfolder]: 17/170 cut-off events. [2022-12-11 20:11:08,916 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-12-11 20:11:08,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 170 events. 17/170 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 608 event pairs, 2 based on Foata normal form. 1/165 useless extension candidates. Maximal degree in co-relation 368. Up to 32 conditions per place. [2022-12-11 20:11:08,917 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 28 selfloop transitions, 5 changer transitions 8/83 dead transitions. [2022-12-11 20:11:08,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 83 transitions, 369 flow [2022-12-11 20:11:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 498 transitions. [2022-12-11 20:11:08,918 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7280701754385965 [2022-12-11 20:11:08,918 INFO L175 Difference]: Start difference. First operand has 105 places, 66 transitions, 199 flow. Second operand 9 states and 498 transitions. [2022-12-11 20:11:08,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 83 transitions, 369 flow [2022-12-11 20:11:08,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 83 transitions, 318 flow, removed 10 selfloop flow, removed 14 redundant places. [2022-12-11 20:11:08,920 INFO L231 Difference]: Finished difference. Result has 97 places, 66 transitions, 190 flow [2022-12-11 20:11:08,920 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=97, PETRI_TRANSITIONS=66} [2022-12-11 20:11:08,920 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 27 predicate places. [2022-12-11 20:11:08,920 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 66 transitions, 190 flow [2022-12-11 20:11:08,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:08,921 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:08,921 INFO L214 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] [2022-12-11 20:11:08,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-11 20:11:08,921 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:08,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:08,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1968038840, now seen corresponding path program 10 times [2022-12-11 20:11:08,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:08,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609053389] [2022-12-11 20:11:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:08,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:09,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:09,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609053389] [2022-12-11 20:11:09,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609053389] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:09,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:09,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:09,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200599241] [2022-12-11 20:11:09,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:09,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:09,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:09,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:09,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:09,051 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:09,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 66 transitions, 190 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:09,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:09,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:09,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:09,182 INFO L130 PetriNetUnfolder]: 17/155 cut-off events. [2022-12-11 20:11:09,183 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-12-11 20:11:09,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 155 events. 17/155 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 521 event pairs, 2 based on Foata normal form. 1/150 useless extension candidates. Maximal degree in co-relation 323. Up to 38 conditions per place. [2022-12-11 20:11:09,183 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 25 selfloop transitions, 3 changer transitions 12/80 dead transitions. [2022-12-11 20:11:09,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 80 transitions, 323 flow [2022-12-11 20:11:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:09,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:09,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 497 transitions. [2022-12-11 20:11:09,184 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7266081871345029 [2022-12-11 20:11:09,185 INFO L175 Difference]: Start difference. First operand has 97 places, 66 transitions, 190 flow. Second operand 9 states and 497 transitions. [2022-12-11 20:11:09,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 80 transitions, 323 flow [2022-12-11 20:11:09,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 80 transitions, 300 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-12-11 20:11:09,186 INFO L231 Difference]: Finished difference. Result has 98 places, 62 transitions, 162 flow [2022-12-11 20:11:09,186 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=98, PETRI_TRANSITIONS=62} [2022-12-11 20:11:09,187 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 28 predicate places. [2022-12-11 20:11:09,187 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 62 transitions, 162 flow [2022-12-11 20:11:09,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:09,187 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:09,187 INFO L214 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] [2022-12-11 20:11:09,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-11 20:11:09,187 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash -717057780, now seen corresponding path program 1 times [2022-12-11 20:11:09,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:09,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561718356] [2022-12-11 20:11:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:09,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:09,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:09,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561718356] [2022-12-11 20:11:09,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561718356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:09,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:09,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:09,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793524751] [2022-12-11 20:11:09,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:09,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:09,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:09,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:09,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:09,346 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:09,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 62 transitions, 162 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:09,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:09,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:09,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:09,493 INFO L130 PetriNetUnfolder]: 19/151 cut-off events. [2022-12-11 20:11:09,494 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2022-12-11 20:11:09,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 151 events. 19/151 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 476 event pairs, 0 based on Foata normal form. 1/151 useless extension candidates. Maximal degree in co-relation 320. Up to 28 conditions per place. [2022-12-11 20:11:09,494 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 33 selfloop transitions, 3 changer transitions 8/84 dead transitions. [2022-12-11 20:11:09,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 84 transitions, 381 flow [2022-12-11 20:11:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:09,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:09,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 500 transitions. [2022-12-11 20:11:09,495 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7309941520467836 [2022-12-11 20:11:09,495 INFO L175 Difference]: Start difference. First operand has 98 places, 62 transitions, 162 flow. Second operand 9 states and 500 transitions. [2022-12-11 20:11:09,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 84 transitions, 381 flow [2022-12-11 20:11:09,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 330 flow, removed 14 selfloop flow, removed 10 redundant places. [2022-12-11 20:11:09,497 INFO L231 Difference]: Finished difference. Result has 85 places, 62 transitions, 160 flow [2022-12-11 20:11:09,497 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=85, PETRI_TRANSITIONS=62} [2022-12-11 20:11:09,497 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2022-12-11 20:11:09,497 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 62 transitions, 160 flow [2022-12-11 20:11:09,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:09,498 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:09,498 INFO L214 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] [2022-12-11 20:11:09,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-11 20:11:09,498 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:09,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:09,498 INFO L85 PathProgramCache]: Analyzing trace with hash 973190350, now seen corresponding path program 2 times [2022-12-11 20:11:09,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:09,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929626780] [2022-12-11 20:11:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:09,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:09,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:09,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929626780] [2022-12-11 20:11:09,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929626780] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:09,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:09,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:09,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640034126] [2022-12-11 20:11:09,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:09,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:09,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:09,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:09,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:09,650 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:09,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 62 transitions, 160 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:09,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:09,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:09,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:09,793 INFO L130 PetriNetUnfolder]: 16/152 cut-off events. [2022-12-11 20:11:09,793 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-11 20:11:09,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 152 events. 16/152 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 475 event pairs, 11 based on Foata normal form. 1/146 useless extension candidates. Maximal degree in co-relation 313. Up to 43 conditions per place. [2022-12-11 20:11:09,794 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 32 selfloop transitions, 2 changer transitions 8/82 dead transitions. [2022-12-11 20:11:09,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 82 transitions, 318 flow [2022-12-11 20:11:09,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:09,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 502 transitions. [2022-12-11 20:11:09,795 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7339181286549707 [2022-12-11 20:11:09,795 INFO L175 Difference]: Start difference. First operand has 85 places, 62 transitions, 160 flow. Second operand 9 states and 502 transitions. [2022-12-11 20:11:09,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 82 transitions, 318 flow [2022-12-11 20:11:09,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 82 transitions, 282 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-12-11 20:11:09,796 INFO L231 Difference]: Finished difference. Result has 88 places, 62 transitions, 164 flow [2022-12-11 20:11:09,796 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=164, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2022-12-11 20:11:09,797 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 18 predicate places. [2022-12-11 20:11:09,797 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 164 flow [2022-12-11 20:11:09,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:09,797 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:09,797 INFO L214 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] [2022-12-11 20:11:09,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-11 20:11:09,797 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:09,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1056994159, now seen corresponding path program 1 times [2022-12-11 20:11:09,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:09,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71051971] [2022-12-11 20:11:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:09,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:09,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:09,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71051971] [2022-12-11 20:11:09,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71051971] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:09,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:09,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718944347] [2022-12-11 20:11:09,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:09,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:09,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:09,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:09,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:09,937 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:09,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 164 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:09,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:09,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:09,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:10,103 INFO L130 PetriNetUnfolder]: 22/233 cut-off events. [2022-12-11 20:11:10,104 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-12-11 20:11:10,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 233 events. 22/233 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1041 event pairs, 5 based on Foata normal form. 2/228 useless extension candidates. Maximal degree in co-relation 490. Up to 40 conditions per place. [2022-12-11 20:11:10,105 INFO L137 encePairwiseOnDemand]: 66/76 looper letters, 38 selfloop transitions, 6 changer transitions 7/89 dead transitions. [2022-12-11 20:11:10,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 388 flow [2022-12-11 20:11:10,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:10,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 538 transitions. [2022-12-11 20:11:10,106 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7078947368421052 [2022-12-11 20:11:10,106 INFO L175 Difference]: Start difference. First operand has 88 places, 62 transitions, 164 flow. Second operand 10 states and 538 transitions. [2022-12-11 20:11:10,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 388 flow [2022-12-11 20:11:10,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 350 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-12-11 20:11:10,108 INFO L231 Difference]: Finished difference. Result has 92 places, 65 transitions, 197 flow [2022-12-11 20:11:10,108 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=197, PETRI_PLACES=92, PETRI_TRANSITIONS=65} [2022-12-11 20:11:10,108 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 22 predicate places. [2022-12-11 20:11:10,108 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 65 transitions, 197 flow [2022-12-11 20:11:10,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:10,109 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:10,110 INFO L214 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] [2022-12-11 20:11:10,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-11 20:11:10,110 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:10,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:10,110 INFO L85 PathProgramCache]: Analyzing trace with hash 704016183, now seen corresponding path program 2 times [2022-12-11 20:11:10,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:10,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979459214] [2022-12-11 20:11:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:10,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:10,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:10,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979459214] [2022-12-11 20:11:10,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979459214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:10,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:10,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:10,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998253737] [2022-12-11 20:11:10,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:10,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:10,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:10,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:10,265 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:10,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 65 transitions, 197 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:10,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:10,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:10,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:10,450 INFO L130 PetriNetUnfolder]: 21/237 cut-off events. [2022-12-11 20:11:10,450 INFO L131 PetriNetUnfolder]: For 177/182 co-relation queries the response was YES. [2022-12-11 20:11:10,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 237 events. 21/237 cut-off events. For 177/182 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1096 event pairs, 0 based on Foata normal form. 2/234 useless extension candidates. Maximal degree in co-relation 530. Up to 48 conditions per place. [2022-12-11 20:11:10,451 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 35 selfloop transitions, 6 changer transitions 12/91 dead transitions. [2022-12-11 20:11:10,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 458 flow [2022-12-11 20:11:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 537 transitions. [2022-12-11 20:11:10,452 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7065789473684211 [2022-12-11 20:11:10,452 INFO L175 Difference]: Start difference. First operand has 92 places, 65 transitions, 197 flow. Second operand 10 states and 537 transitions. [2022-12-11 20:11:10,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 458 flow [2022-12-11 20:11:10,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 91 transitions, 432 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-11 20:11:10,454 INFO L231 Difference]: Finished difference. Result has 99 places, 65 transitions, 213 flow [2022-12-11 20:11:10,454 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=213, PETRI_PLACES=99, PETRI_TRANSITIONS=65} [2022-12-11 20:11:10,454 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 29 predicate places. [2022-12-11 20:11:10,455 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 65 transitions, 213 flow [2022-12-11 20:11:10,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:10,471 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:10,471 INFO L214 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] [2022-12-11 20:11:10,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-11 20:11:10,471 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:10,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2043252656, now seen corresponding path program 3 times [2022-12-11 20:11:10,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:10,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980810433] [2022-12-11 20:11:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:10,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:10,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:10,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980810433] [2022-12-11 20:11:10,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980810433] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:10,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:10,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:10,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322706150] [2022-12-11 20:11:10,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:10,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:10,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:10,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:10,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:10,617 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:10,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 65 transitions, 213 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:10,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:10,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:10,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:10,748 INFO L130 PetriNetUnfolder]: 16/234 cut-off events. [2022-12-11 20:11:10,748 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2022-12-11 20:11:10,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 234 events. 16/234 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1086 event pairs, 0 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 569. Up to 64 conditions per place. [2022-12-11 20:11:10,749 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 37 selfloop transitions, 6 changer transitions 7/90 dead transitions. [2022-12-11 20:11:10,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 90 transitions, 464 flow [2022-12-11 20:11:10,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:10,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 504 transitions. [2022-12-11 20:11:10,750 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2022-12-11 20:11:10,750 INFO L175 Difference]: Start difference. First operand has 99 places, 65 transitions, 213 flow. Second operand 9 states and 504 transitions. [2022-12-11 20:11:10,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 90 transitions, 464 flow [2022-12-11 20:11:10,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 424 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-12-11 20:11:10,752 INFO L231 Difference]: Finished difference. Result has 100 places, 67 transitions, 245 flow [2022-12-11 20:11:10,752 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=245, PETRI_PLACES=100, PETRI_TRANSITIONS=67} [2022-12-11 20:11:10,753 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2022-12-11 20:11:10,753 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 67 transitions, 245 flow [2022-12-11 20:11:10,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:10,754 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:10,754 INFO L214 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] [2022-12-11 20:11:10,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-11 20:11:10,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:10,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash -250113802, now seen corresponding path program 4 times [2022-12-11 20:11:10,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:10,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322707527] [2022-12-11 20:11:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:10,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:10,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:10,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322707527] [2022-12-11 20:11:10,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322707527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:10,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:10,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:10,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325486507] [2022-12-11 20:11:10,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:10,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:10,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:10,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:10,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:10,896 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:10,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 67 transitions, 245 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:10,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:10,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:10,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:11,027 INFO L130 PetriNetUnfolder]: 15/240 cut-off events. [2022-12-11 20:11:11,027 INFO L131 PetriNetUnfolder]: For 341/343 co-relation queries the response was YES. [2022-12-11 20:11:11,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 240 events. 15/240 cut-off events. For 341/343 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1159 event pairs, 9 based on Foata normal form. 1/233 useless extension candidates. Maximal degree in co-relation 589. Up to 60 conditions per place. [2022-12-11 20:11:11,029 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 36 selfloop transitions, 6 changer transitions 8/90 dead transitions. [2022-12-11 20:11:11,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 90 transitions, 482 flow [2022-12-11 20:11:11,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:11,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 503 transitions. [2022-12-11 20:11:11,030 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7353801169590644 [2022-12-11 20:11:11,030 INFO L175 Difference]: Start difference. First operand has 100 places, 67 transitions, 245 flow. Second operand 9 states and 503 transitions. [2022-12-11 20:11:11,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 90 transitions, 482 flow [2022-12-11 20:11:11,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 90 transitions, 456 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-12-11 20:11:11,032 INFO L231 Difference]: Finished difference. Result has 107 places, 69 transitions, 293 flow [2022-12-11 20:11:11,032 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=293, PETRI_PLACES=107, PETRI_TRANSITIONS=69} [2022-12-11 20:11:11,032 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 37 predicate places. [2022-12-11 20:11:11,032 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 69 transitions, 293 flow [2022-12-11 20:11:11,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:11,033 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:11,033 INFO L214 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] [2022-12-11 20:11:11,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-11 20:11:11,033 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:11,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:11,033 INFO L85 PathProgramCache]: Analyzing trace with hash 930675609, now seen corresponding path program 3 times [2022-12-11 20:11:11,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:11,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705138327] [2022-12-11 20:11:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:11,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:11,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:11,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705138327] [2022-12-11 20:11:11,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705138327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:11,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:11,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:11,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565377031] [2022-12-11 20:11:11,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:11,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:11,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:11,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:11,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:11,187 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:11,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 69 transitions, 293 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:11,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:11,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:11,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:11,486 INFO L130 PetriNetUnfolder]: 23/377 cut-off events. [2022-12-11 20:11:11,486 INFO L131 PetriNetUnfolder]: For 779/786 co-relation queries the response was YES. [2022-12-11 20:11:11,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 377 events. 23/377 cut-off events. For 779/786 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2400 event pairs, 9 based on Foata normal form. 5/373 useless extension candidates. Maximal degree in co-relation 1012. Up to 62 conditions per place. [2022-12-11 20:11:11,488 INFO L137 encePairwiseOnDemand]: 66/76 looper letters, 63 selfloop transitions, 12 changer transitions 16/129 dead transitions. [2022-12-11 20:11:11,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 129 transitions, 869 flow [2022-12-11 20:11:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-11 20:11:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-11 20:11:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 865 transitions. [2022-12-11 20:11:11,489 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7113486842105263 [2022-12-11 20:11:11,489 INFO L175 Difference]: Start difference. First operand has 107 places, 69 transitions, 293 flow. Second operand 16 states and 865 transitions. [2022-12-11 20:11:11,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 129 transitions, 869 flow [2022-12-11 20:11:11,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 129 transitions, 801 flow, removed 33 selfloop flow, removed 5 redundant places. [2022-12-11 20:11:11,493 INFO L231 Difference]: Finished difference. Result has 127 places, 77 transitions, 439 flow [2022-12-11 20:11:11,493 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=439, PETRI_PLACES=127, PETRI_TRANSITIONS=77} [2022-12-11 20:11:11,493 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 57 predicate places. [2022-12-11 20:11:11,493 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 77 transitions, 439 flow [2022-12-11 20:11:11,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:11,494 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:11,494 INFO L214 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] [2022-12-11 20:11:11,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-11 20:11:11,494 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:11,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1087346305, now seen corresponding path program 4 times [2022-12-11 20:11:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:11,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163093407] [2022-12-11 20:11:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:11,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:11,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:11,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163093407] [2022-12-11 20:11:11,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163093407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:11,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:11,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:11,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089485961] [2022-12-11 20:11:11,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:11,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:11,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:11,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:11,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:11,646 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:11,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 77 transitions, 439 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:11,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:11,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:11,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:11,798 INFO L130 PetriNetUnfolder]: 20/358 cut-off events. [2022-12-11 20:11:11,798 INFO L131 PetriNetUnfolder]: For 1006/1013 co-relation queries the response was YES. [2022-12-11 20:11:11,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 358 events. 20/358 cut-off events. For 1006/1013 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2249 event pairs, 10 based on Foata normal form. 3/352 useless extension candidates. Maximal degree in co-relation 1056. Up to 64 conditions per place. [2022-12-11 20:11:11,800 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 47 selfloop transitions, 10 changer transitions 13/108 dead transitions. [2022-12-11 20:11:11,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 108 transitions, 846 flow [2022-12-11 20:11:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 541 transitions. [2022-12-11 20:11:11,803 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7118421052631579 [2022-12-11 20:11:11,803 INFO L175 Difference]: Start difference. First operand has 127 places, 77 transitions, 439 flow. Second operand 10 states and 541 transitions. [2022-12-11 20:11:11,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 108 transitions, 846 flow [2022-12-11 20:11:11,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 108 transitions, 792 flow, removed 22 selfloop flow, removed 8 redundant places. [2022-12-11 20:11:11,807 INFO L231 Difference]: Finished difference. Result has 130 places, 80 transitions, 496 flow [2022-12-11 20:11:11,807 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=496, PETRI_PLACES=130, PETRI_TRANSITIONS=80} [2022-12-11 20:11:11,808 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 60 predicate places. [2022-12-11 20:11:11,808 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 80 transitions, 496 flow [2022-12-11 20:11:11,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:11,808 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:11,808 INFO L214 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] [2022-12-11 20:11:11,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-11 20:11:11,809 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:11,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:11,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1549852688, now seen corresponding path program 5 times [2022-12-11 20:11:11,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:11,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624471641] [2022-12-11 20:11:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:11,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:11,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:11,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624471641] [2022-12-11 20:11:11,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624471641] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:11,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:11,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:11,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633159597] [2022-12-11 20:11:11,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:11,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:11,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:11,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:11,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:11,938 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:11,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 80 transitions, 496 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:11,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:11,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:11,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:12,083 INFO L130 PetriNetUnfolder]: 17/339 cut-off events. [2022-12-11 20:11:12,084 INFO L131 PetriNetUnfolder]: For 1131/1140 co-relation queries the response was YES. [2022-12-11 20:11:12,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 339 events. 17/339 cut-off events. For 1131/1140 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2061 event pairs, 5 based on Foata normal form. 4/337 useless extension candidates. Maximal degree in co-relation 1016. Up to 100 conditions per place. [2022-12-11 20:11:12,085 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 36 selfloop transitions, 8 changer transitions 14/99 dead transitions. [2022-12-11 20:11:12,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 99 transitions, 781 flow [2022-12-11 20:11:12,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 498 transitions. [2022-12-11 20:11:12,087 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7280701754385965 [2022-12-11 20:11:12,087 INFO L175 Difference]: Start difference. First operand has 130 places, 80 transitions, 496 flow. Second operand 9 states and 498 transitions. [2022-12-11 20:11:12,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 99 transitions, 781 flow [2022-12-11 20:11:12,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 99 transitions, 747 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-12-11 20:11:12,092 INFO L231 Difference]: Finished difference. Result has 133 places, 77 transitions, 440 flow [2022-12-11 20:11:12,092 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=440, PETRI_PLACES=133, PETRI_TRANSITIONS=77} [2022-12-11 20:11:12,093 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 63 predicate places. [2022-12-11 20:11:12,093 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 77 transitions, 440 flow [2022-12-11 20:11:12,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:12,093 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:12,093 INFO L214 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] [2022-12-11 20:11:12,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-11 20:11:12,093 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:12,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:12,094 INFO L85 PathProgramCache]: Analyzing trace with hash -396958893, now seen corresponding path program 5 times [2022-12-11 20:11:12,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:12,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383395620] [2022-12-11 20:11:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:12,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:12,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:12,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383395620] [2022-12-11 20:11:12,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383395620] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:12,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:12,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:12,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648513205] [2022-12-11 20:11:12,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:12,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:12,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:12,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:12,233 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:12,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 77 transitions, 440 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:12,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:12,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:12,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:12,395 INFO L130 PetriNetUnfolder]: 18/349 cut-off events. [2022-12-11 20:11:12,395 INFO L131 PetriNetUnfolder]: For 1026/1032 co-relation queries the response was YES. [2022-12-11 20:11:12,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 349 events. 18/349 cut-off events. For 1026/1032 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2178 event pairs, 4 based on Foata normal form. 3/345 useless extension candidates. Maximal degree in co-relation 1011. Up to 101 conditions per place. [2022-12-11 20:11:12,397 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 54 selfloop transitions, 11 changer transitions 8/111 dead transitions. [2022-12-11 20:11:12,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 111 transitions, 807 flow [2022-12-11 20:11:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 546 transitions. [2022-12-11 20:11:12,399 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.718421052631579 [2022-12-11 20:11:12,399 INFO L175 Difference]: Start difference. First operand has 133 places, 77 transitions, 440 flow. Second operand 10 states and 546 transitions. [2022-12-11 20:11:12,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 111 transitions, 807 flow [2022-12-11 20:11:12,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 111 transitions, 739 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-12-11 20:11:12,406 INFO L231 Difference]: Finished difference. Result has 133 places, 80 transitions, 476 flow [2022-12-11 20:11:12,406 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=476, PETRI_PLACES=133, PETRI_TRANSITIONS=80} [2022-12-11 20:11:12,407 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 63 predicate places. [2022-12-11 20:11:12,407 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 80 transitions, 476 flow [2022-12-11 20:11:12,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:12,407 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:12,407 INFO L214 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] [2022-12-11 20:11:12,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-11 20:11:12,408 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1641787665, now seen corresponding path program 6 times [2022-12-11 20:11:12,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:12,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296542121] [2022-12-11 20:11:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:12,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:12,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:12,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:12,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296542121] [2022-12-11 20:11:12,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296542121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:12,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:12,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:12,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695093014] [2022-12-11 20:11:12,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:12,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:12,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:12,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:12,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:12,542 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:12,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 80 transitions, 476 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:12,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:12,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:12,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:12,699 INFO L130 PetriNetUnfolder]: 17/358 cut-off events. [2022-12-11 20:11:12,699 INFO L131 PetriNetUnfolder]: For 1032/1042 co-relation queries the response was YES. [2022-12-11 20:11:12,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1077 conditions, 358 events. 17/358 cut-off events. For 1032/1042 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2269 event pairs, 7 based on Foata normal form. 3/353 useless extension candidates. Maximal degree in co-relation 1043. Up to 73 conditions per place. [2022-12-11 20:11:12,702 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 55 selfloop transitions, 9 changer transitions 11/113 dead transitions. [2022-12-11 20:11:12,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 113 transitions, 857 flow [2022-12-11 20:11:12,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 548 transitions. [2022-12-11 20:11:12,703 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7210526315789474 [2022-12-11 20:11:12,703 INFO L175 Difference]: Start difference. First operand has 133 places, 80 transitions, 476 flow. Second operand 10 states and 548 transitions. [2022-12-11 20:11:12,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 113 transitions, 857 flow [2022-12-11 20:11:12,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 113 transitions, 819 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-12-11 20:11:12,708 INFO L231 Difference]: Finished difference. Result has 141 places, 82 transitions, 521 flow [2022-12-11 20:11:12,708 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=521, PETRI_PLACES=141, PETRI_TRANSITIONS=82} [2022-12-11 20:11:12,709 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 71 predicate places. [2022-12-11 20:11:12,709 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 82 transitions, 521 flow [2022-12-11 20:11:12,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:12,709 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:12,709 INFO L214 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] [2022-12-11 20:11:12,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-11 20:11:12,709 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:12,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:12,710 INFO L85 PathProgramCache]: Analyzing trace with hash -2042005283, now seen corresponding path program 7 times [2022-12-11 20:11:12,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:12,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784862760] [2022-12-11 20:11:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:12,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:12,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:12,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784862760] [2022-12-11 20:11:12,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784862760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:12,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:12,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:12,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983060596] [2022-12-11 20:11:12,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:12,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:12,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:12,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:12,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:12,862 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:12,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 82 transitions, 521 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:12,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:12,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:12,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:13,025 INFO L130 PetriNetUnfolder]: 15/339 cut-off events. [2022-12-11 20:11:13,026 INFO L131 PetriNetUnfolder]: For 1080/1095 co-relation queries the response was YES. [2022-12-11 20:11:13,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 339 events. 15/339 cut-off events. For 1080/1095 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2074 event pairs, 3 based on Foata normal form. 5/338 useless extension candidates. Maximal degree in co-relation 1030. Up to 99 conditions per place. [2022-12-11 20:11:13,028 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 47 selfloop transitions, 11 changer transitions 12/108 dead transitions. [2022-12-11 20:11:13,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 108 transitions, 859 flow [2022-12-11 20:11:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:13,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:13,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 540 transitions. [2022-12-11 20:11:13,032 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2022-12-11 20:11:13,032 INFO L175 Difference]: Start difference. First operand has 141 places, 82 transitions, 521 flow. Second operand 10 states and 540 transitions. [2022-12-11 20:11:13,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 108 transitions, 859 flow [2022-12-11 20:11:13,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 108 transitions, 815 flow, removed 18 selfloop flow, removed 6 redundant places. [2022-12-11 20:11:13,037 INFO L231 Difference]: Finished difference. Result has 145 places, 81 transitions, 519 flow [2022-12-11 20:11:13,037 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=519, PETRI_PLACES=145, PETRI_TRANSITIONS=81} [2022-12-11 20:11:13,038 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 75 predicate places. [2022-12-11 20:11:13,038 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 81 transitions, 519 flow [2022-12-11 20:11:13,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:13,038 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:13,038 INFO L214 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] [2022-12-11 20:11:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-11 20:11:13,038 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1877360743, now seen corresponding path program 8 times [2022-12-11 20:11:13,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:13,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952454065] [2022-12-11 20:11:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:13,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:13,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:13,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952454065] [2022-12-11 20:11:13,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952454065] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:13,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:13,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:13,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507011804] [2022-12-11 20:11:13,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:13,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:13,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:13,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:13,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:13,170 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:13,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 81 transitions, 519 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:13,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:13,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:13,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:13,313 INFO L130 PetriNetUnfolder]: 12/303 cut-off events. [2022-12-11 20:11:13,313 INFO L131 PetriNetUnfolder]: For 1047/1053 co-relation queries the response was YES. [2022-12-11 20:11:13,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 303 events. 12/303 cut-off events. For 1047/1053 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1735 event pairs, 2 based on Foata normal form. 3/301 useless extension candidates. Maximal degree in co-relation 940. Up to 95 conditions per place. [2022-12-11 20:11:13,315 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 38 selfloop transitions, 8 changer transitions 15/99 dead transitions. [2022-12-11 20:11:13,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 99 transitions, 791 flow [2022-12-11 20:11:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 533 transitions. [2022-12-11 20:11:13,318 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7013157894736842 [2022-12-11 20:11:13,318 INFO L175 Difference]: Start difference. First operand has 145 places, 81 transitions, 519 flow. Second operand 10 states and 533 transitions. [2022-12-11 20:11:13,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 99 transitions, 791 flow [2022-12-11 20:11:13,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 99 transitions, 708 flow, removed 13 selfloop flow, removed 14 redundant places. [2022-12-11 20:11:13,322 INFO L231 Difference]: Finished difference. Result has 140 places, 77 transitions, 427 flow [2022-12-11 20:11:13,323 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=427, PETRI_PLACES=140, PETRI_TRANSITIONS=77} [2022-12-11 20:11:13,325 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 70 predicate places. [2022-12-11 20:11:13,325 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 77 transitions, 427 flow [2022-12-11 20:11:13,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:13,327 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:13,327 INFO L214 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] [2022-12-11 20:11:13,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-11 20:11:13,327 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:13,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1771675004, now seen corresponding path program 6 times [2022-12-11 20:11:13,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:13,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251555171] [2022-12-11 20:11:13,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:13,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:13,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:13,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251555171] [2022-12-11 20:11:13,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251555171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:13,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:13,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:13,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774676888] [2022-12-11 20:11:13,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:13,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:13,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:13,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:13,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:13,473 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:13,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 77 transitions, 427 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:13,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:13,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:13,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:13,591 INFO L130 PetriNetUnfolder]: 11/271 cut-off events. [2022-12-11 20:11:13,591 INFO L131 PetriNetUnfolder]: For 795/802 co-relation queries the response was YES. [2022-12-11 20:11:13,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 271 events. 11/271 cut-off events. For 795/802 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1461 event pairs, 8 based on Foata normal form. 4/271 useless extension candidates. Maximal degree in co-relation 806. Up to 83 conditions per place. [2022-12-11 20:11:13,592 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 31 selfloop transitions, 3 changer transitions 17/92 dead transitions. [2022-12-11 20:11:13,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 92 transitions, 649 flow [2022-12-11 20:11:13,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 496 transitions. [2022-12-11 20:11:13,593 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7251461988304093 [2022-12-11 20:11:13,593 INFO L175 Difference]: Start difference. First operand has 140 places, 77 transitions, 427 flow. Second operand 9 states and 496 transitions. [2022-12-11 20:11:13,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 92 transitions, 649 flow [2022-12-11 20:11:13,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 92 transitions, 600 flow, removed 11 selfloop flow, removed 11 redundant places. [2022-12-11 20:11:13,596 INFO L231 Difference]: Finished difference. Result has 132 places, 72 transitions, 327 flow [2022-12-11 20:11:13,597 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=327, PETRI_PLACES=132, PETRI_TRANSITIONS=72} [2022-12-11 20:11:13,598 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 62 predicate places. [2022-12-11 20:11:13,598 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 72 transitions, 327 flow [2022-12-11 20:11:13,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:13,599 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:13,599 INFO L214 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] [2022-12-11 20:11:13,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-11 20:11:13,599 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:13,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:13,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1565036015, now seen corresponding path program 9 times [2022-12-11 20:11:13,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:13,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705957315] [2022-12-11 20:11:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:13,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:13,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:13,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705957315] [2022-12-11 20:11:13,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705957315] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:13,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:13,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:13,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757725762] [2022-12-11 20:11:13,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:13,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:13,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:13,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:13,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:13,719 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:13,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 72 transitions, 327 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:13,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:13,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:13,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:13,859 INFO L130 PetriNetUnfolder]: 10/232 cut-off events. [2022-12-11 20:11:13,859 INFO L131 PetriNetUnfolder]: For 418/422 co-relation queries the response was YES. [2022-12-11 20:11:13,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 232 events. 10/232 cut-off events. For 418/422 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1095 event pairs, 5 based on Foata normal form. 2/230 useless extension candidates. Maximal degree in co-relation 626. Up to 53 conditions per place. [2022-12-11 20:11:13,860 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 45 selfloop transitions, 8 changer transitions 8/99 dead transitions. [2022-12-11 20:11:13,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 99 transitions, 595 flow [2022-12-11 20:11:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 544 transitions. [2022-12-11 20:11:13,861 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7157894736842105 [2022-12-11 20:11:13,861 INFO L175 Difference]: Start difference. First operand has 132 places, 72 transitions, 327 flow. Second operand 10 states and 544 transitions. [2022-12-11 20:11:13,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 99 transitions, 595 flow [2022-12-11 20:11:13,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 99 transitions, 546 flow, removed 21 selfloop flow, removed 11 redundant places. [2022-12-11 20:11:13,864 INFO L231 Difference]: Finished difference. Result has 124 places, 73 transitions, 338 flow [2022-12-11 20:11:13,864 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=124, PETRI_TRANSITIONS=73} [2022-12-11 20:11:13,865 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 54 predicate places. [2022-12-11 20:11:13,865 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 73 transitions, 338 flow [2022-12-11 20:11:13,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:13,865 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:13,865 INFO L214 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] [2022-12-11 20:11:13,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-11 20:11:13,865 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:13,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:13,866 INFO L85 PathProgramCache]: Analyzing trace with hash -782882517, now seen corresponding path program 10 times [2022-12-11 20:11:13,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:13,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320444894] [2022-12-11 20:11:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:13,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:13,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:13,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320444894] [2022-12-11 20:11:13,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320444894] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:13,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:13,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:13,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634380501] [2022-12-11 20:11:13,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:13,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:13,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:13,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:13,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:13,995 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:13,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 73 transitions, 338 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:13,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:13,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:13,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:14,144 INFO L130 PetriNetUnfolder]: 9/210 cut-off events. [2022-12-11 20:11:14,145 INFO L131 PetriNetUnfolder]: For 355/360 co-relation queries the response was YES. [2022-12-11 20:11:14,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 210 events. 9/210 cut-off events. For 355/360 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 916 event pairs, 5 based on Foata normal form. 3/209 useless extension candidates. Maximal degree in co-relation 584. Up to 53 conditions per place. [2022-12-11 20:11:14,146 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 38 selfloop transitions, 5 changer transitions 12/93 dead transitions. [2022-12-11 20:11:14,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 93 transitions, 565 flow [2022-12-11 20:11:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:14,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 539 transitions. [2022-12-11 20:11:14,148 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7092105263157895 [2022-12-11 20:11:14,148 INFO L175 Difference]: Start difference. First operand has 124 places, 73 transitions, 338 flow. Second operand 10 states and 539 transitions. [2022-12-11 20:11:14,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 93 transitions, 565 flow [2022-12-11 20:11:14,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 93 transitions, 521 flow, removed 12 selfloop flow, removed 9 redundant places. [2022-12-11 20:11:14,151 INFO L231 Difference]: Finished difference. Result has 125 places, 70 transitions, 296 flow [2022-12-11 20:11:14,151 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=125, PETRI_TRANSITIONS=70} [2022-12-11 20:11:14,151 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 55 predicate places. [2022-12-11 20:11:14,151 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 70 transitions, 296 flow [2022-12-11 20:11:14,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:14,151 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:14,152 INFO L214 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] [2022-12-11 20:11:14,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-11 20:11:14,152 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:14,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:14,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1032468985, now seen corresponding path program 11 times [2022-12-11 20:11:14,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:14,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187260383] [2022-12-11 20:11:14,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:14,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:14,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:14,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187260383] [2022-12-11 20:11:14,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187260383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:14,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:14,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:14,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869710161] [2022-12-11 20:11:14,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:14,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:14,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:14,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:14,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:14,313 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:14,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 70 transitions, 296 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:14,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:14,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:14,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:14,516 INFO L130 PetriNetUnfolder]: 8/202 cut-off events. [2022-12-11 20:11:14,516 INFO L131 PetriNetUnfolder]: For 354/358 co-relation queries the response was YES. [2022-12-11 20:11:14,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 202 events. 8/202 cut-off events. For 354/358 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 851 event pairs, 5 based on Foata normal form. 2/200 useless extension candidates. Maximal degree in co-relation 552. Up to 53 conditions per place. [2022-12-11 20:11:14,517 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 36 selfloop transitions, 6 changer transitions 10/90 dead transitions. [2022-12-11 20:11:14,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 90 transitions, 515 flow [2022-12-11 20:11:14,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:14,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 537 transitions. [2022-12-11 20:11:14,518 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7065789473684211 [2022-12-11 20:11:14,518 INFO L175 Difference]: Start difference. First operand has 125 places, 70 transitions, 296 flow. Second operand 10 states and 537 transitions. [2022-12-11 20:11:14,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 90 transitions, 515 flow [2022-12-11 20:11:14,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 90 transitions, 467 flow, removed 15 selfloop flow, removed 11 redundant places. [2022-12-11 20:11:14,520 INFO L231 Difference]: Finished difference. Result has 122 places, 71 transitions, 306 flow [2022-12-11 20:11:14,521 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=306, PETRI_PLACES=122, PETRI_TRANSITIONS=71} [2022-12-11 20:11:14,521 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 52 predicate places. [2022-12-11 20:11:14,521 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 71 transitions, 306 flow [2022-12-11 20:11:14,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:14,521 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:14,521 INFO L214 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] [2022-12-11 20:11:14,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-11 20:11:14,521 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:14,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:14,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1776033659, now seen corresponding path program 12 times [2022-12-11 20:11:14,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:14,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690174794] [2022-12-11 20:11:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:14,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:14,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:14,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690174794] [2022-12-11 20:11:14,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690174794] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:14,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:14,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:14,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938771334] [2022-12-11 20:11:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:14,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:14,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:14,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:14,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:14,729 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:14,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 71 transitions, 306 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:14,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:14,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:14,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:14,856 INFO L130 PetriNetUnfolder]: 8/187 cut-off events. [2022-12-11 20:11:14,856 INFO L131 PetriNetUnfolder]: For 300/304 co-relation queries the response was YES. [2022-12-11 20:11:14,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 187 events. 8/187 cut-off events. For 300/304 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 729 event pairs, 5 based on Foata normal form. 2/185 useless extension candidates. Maximal degree in co-relation 509. Up to 53 conditions per place. [2022-12-11 20:11:14,857 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 27 selfloop transitions, 2 changer transitions 16/83 dead transitions. [2022-12-11 20:11:14,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 83 transitions, 471 flow [2022-12-11 20:11:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:14,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 530 transitions. [2022-12-11 20:11:14,858 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6973684210526315 [2022-12-11 20:11:14,859 INFO L175 Difference]: Start difference. First operand has 122 places, 71 transitions, 306 flow. Second operand 10 states and 530 transitions. [2022-12-11 20:11:14,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 83 transitions, 471 flow [2022-12-11 20:11:14,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 83 transitions, 440 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-12-11 20:11:14,861 INFO L231 Difference]: Finished difference. Result has 123 places, 65 transitions, 237 flow [2022-12-11 20:11:14,861 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=237, PETRI_PLACES=123, PETRI_TRANSITIONS=65} [2022-12-11 20:11:14,861 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 53 predicate places. [2022-12-11 20:11:14,861 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 65 transitions, 237 flow [2022-12-11 20:11:14,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:14,861 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:14,862 INFO L214 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] [2022-12-11 20:11:14,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-11 20:11:14,862 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:14,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:14,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2092161884, now seen corresponding path program 7 times [2022-12-11 20:11:14,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:14,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831873396] [2022-12-11 20:11:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:14,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:14,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:14,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831873396] [2022-12-11 20:11:14,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831873396] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:14,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:14,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:14,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114692337] [2022-12-11 20:11:14,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:14,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:14,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:14,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:14,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:14,987 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:14,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 65 transitions, 237 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:14,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:14,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:14,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:15,109 INFO L130 PetriNetUnfolder]: 6/160 cut-off events. [2022-12-11 20:11:15,110 INFO L131 PetriNetUnfolder]: For 234/238 co-relation queries the response was YES. [2022-12-11 20:11:15,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 160 events. 6/160 cut-off events. For 234/238 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 552 event pairs, 6 based on Foata normal form. 1/158 useless extension candidates. Maximal degree in co-relation 423. Up to 48 conditions per place. [2022-12-11 20:11:15,111 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 31 selfloop transitions, 3 changer transitions 8/82 dead transitions. [2022-12-11 20:11:15,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 82 transitions, 425 flow [2022-12-11 20:11:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:15,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 499 transitions. [2022-12-11 20:11:15,112 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.72953216374269 [2022-12-11 20:11:15,112 INFO L175 Difference]: Start difference. First operand has 123 places, 65 transitions, 237 flow. Second operand 9 states and 499 transitions. [2022-12-11 20:11:15,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 82 transitions, 425 flow [2022-12-11 20:11:15,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 82 transitions, 381 flow, removed 12 selfloop flow, removed 11 redundant places. [2022-12-11 20:11:15,113 INFO L231 Difference]: Finished difference. Result has 111 places, 67 transitions, 256 flow [2022-12-11 20:11:15,113 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=256, PETRI_PLACES=111, PETRI_TRANSITIONS=67} [2022-12-11 20:11:15,114 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 41 predicate places. [2022-12-11 20:11:15,114 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 67 transitions, 256 flow [2022-12-11 20:11:15,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:15,114 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:15,114 INFO L214 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] [2022-12-11 20:11:15,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-11 20:11:15,114 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:15,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:15,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1149716154, now seen corresponding path program 8 times [2022-12-11 20:11:15,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:15,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282421612] [2022-12-11 20:11:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:15,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:15,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:15,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282421612] [2022-12-11 20:11:15,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282421612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:15,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:15,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:11:15,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627048040] [2022-12-11 20:11:15,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:15,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:11:15,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:11:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:11:15,244 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2022-12-11 20:11:15,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 67 transitions, 256 flow. Second operand has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:15,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:15,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2022-12-11 20:11:15,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:15,358 INFO L130 PetriNetUnfolder]: 6/145 cut-off events. [2022-12-11 20:11:15,358 INFO L131 PetriNetUnfolder]: For 156/162 co-relation queries the response was YES. [2022-12-11 20:11:15,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 145 events. 6/145 cut-off events. For 156/162 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 449 event pairs, 6 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 377. Up to 48 conditions per place. [2022-12-11 20:11:15,359 INFO L137 encePairwiseOnDemand]: 68/76 looper letters, 23 selfloop transitions, 0 changer transitions 16/77 dead transitions. [2022-12-11 20:11:15,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 77 transitions, 399 flow [2022-12-11 20:11:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:11:15,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:11:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 494 transitions. [2022-12-11 20:11:15,360 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2022-12-11 20:11:15,360 INFO L175 Difference]: Start difference. First operand has 111 places, 67 transitions, 256 flow. Second operand 9 states and 494 transitions. [2022-12-11 20:11:15,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 77 transitions, 399 flow [2022-12-11 20:11:15,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 77 transitions, 382 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-12-11 20:11:15,362 INFO L231 Difference]: Finished difference. Result has 114 places, 61 transitions, 195 flow [2022-12-11 20:11:15,362 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=195, PETRI_PLACES=114, PETRI_TRANSITIONS=61} [2022-12-11 20:11:15,362 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 44 predicate places. [2022-12-11 20:11:15,362 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 61 transitions, 195 flow [2022-12-11 20:11:15,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:15,362 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:15,362 INFO L214 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] [2022-12-11 20:11:15,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-11 20:11:15,363 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:15,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:15,363 INFO L85 PathProgramCache]: Analyzing trace with hash -410379887, now seen corresponding path program 13 times [2022-12-11 20:11:15,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:15,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715725552] [2022-12-11 20:11:15,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:15,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:15,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:15,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715725552] [2022-12-11 20:11:15,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715725552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:15,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:15,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:15,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609757294] [2022-12-11 20:11:15,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:15,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:15,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:15,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:15,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:15,493 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:15,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 61 transitions, 195 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:15,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:15,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:15,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:15,635 INFO L130 PetriNetUnfolder]: 6/145 cut-off events. [2022-12-11 20:11:15,635 INFO L131 PetriNetUnfolder]: For 105/107 co-relation queries the response was YES. [2022-12-11 20:11:15,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 145 events. 6/145 cut-off events. For 105/107 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 440 event pairs, 0 based on Foata normal form. 1/146 useless extension candidates. Maximal degree in co-relation 346. Up to 29 conditions per place. [2022-12-11 20:11:15,636 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 31 selfloop transitions, 7 changer transitions 6/80 dead transitions. [2022-12-11 20:11:15,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 80 transitions, 375 flow [2022-12-11 20:11:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:15,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 532 transitions. [2022-12-11 20:11:15,637 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7 [2022-12-11 20:11:15,637 INFO L175 Difference]: Start difference. First operand has 114 places, 61 transitions, 195 flow. Second operand 10 states and 532 transitions. [2022-12-11 20:11:15,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 80 transitions, 375 flow [2022-12-11 20:11:15,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 80 transitions, 339 flow, removed 17 selfloop flow, removed 9 redundant places. [2022-12-11 20:11:15,638 INFO L231 Difference]: Finished difference. Result has 103 places, 63 transitions, 220 flow [2022-12-11 20:11:15,639 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=220, PETRI_PLACES=103, PETRI_TRANSITIONS=63} [2022-12-11 20:11:15,639 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 33 predicate places. [2022-12-11 20:11:15,639 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 63 transitions, 220 flow [2022-12-11 20:11:15,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:15,639 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:15,639 INFO L214 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] [2022-12-11 20:11:15,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-11 20:11:15,640 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash -311072717, now seen corresponding path program 14 times [2022-12-11 20:11:15,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:15,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411076222] [2022-12-11 20:11:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:15,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:15,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:15,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411076222] [2022-12-11 20:11:15,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411076222] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:15,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:15,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:15,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395110867] [2022-12-11 20:11:15,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:15,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:15,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:15,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:15,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:15,789 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:15,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 63 transitions, 220 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:15,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:15,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:15,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:15,929 INFO L130 PetriNetUnfolder]: 5/147 cut-off events. [2022-12-11 20:11:15,930 INFO L131 PetriNetUnfolder]: For 125/127 co-relation queries the response was YES. [2022-12-11 20:11:15,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 147 events. 5/147 cut-off events. For 125/127 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 468 event pairs, 0 based on Foata normal form. 1/148 useless extension candidates. Maximal degree in co-relation 360. Up to 20 conditions per place. [2022-12-11 20:11:15,930 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 32 selfloop transitions, 7 changer transitions 8/83 dead transitions. [2022-12-11 20:11:15,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 83 transitions, 429 flow [2022-12-11 20:11:15,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:15,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 533 transitions. [2022-12-11 20:11:15,932 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7013157894736842 [2022-12-11 20:11:15,932 INFO L175 Difference]: Start difference. First operand has 103 places, 63 transitions, 220 flow. Second operand 10 states and 533 transitions. [2022-12-11 20:11:15,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 83 transitions, 429 flow [2022-12-11 20:11:15,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 83 transitions, 401 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-12-11 20:11:15,934 INFO L231 Difference]: Finished difference. Result has 110 places, 65 transitions, 259 flow [2022-12-11 20:11:15,934 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=259, PETRI_PLACES=110, PETRI_TRANSITIONS=65} [2022-12-11 20:11:15,934 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 40 predicate places. [2022-12-11 20:11:15,934 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 65 transitions, 259 flow [2022-12-11 20:11:15,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:15,935 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:15,935 INFO L214 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] [2022-12-11 20:11:15,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-11 20:11:15,935 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash -21089455, now seen corresponding path program 15 times [2022-12-11 20:11:15,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:15,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795665902] [2022-12-11 20:11:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:15,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:16,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:16,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795665902] [2022-12-11 20:11:16,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795665902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:16,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:16,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:16,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889832675] [2022-12-11 20:11:16,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:16,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:16,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:16,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:16,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:16,063 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:16,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 65 transitions, 259 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:16,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:16,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:16,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:16,204 INFO L130 PetriNetUnfolder]: 4/145 cut-off events. [2022-12-11 20:11:16,204 INFO L131 PetriNetUnfolder]: For 183/187 co-relation queries the response was YES. [2022-12-11 20:11:16,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 145 events. 4/145 cut-off events. For 183/187 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 464 event pairs, 1 based on Foata normal form. 3/147 useless extension candidates. Maximal degree in co-relation 370. Up to 19 conditions per place. [2022-12-11 20:11:16,205 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 37 selfloop transitions, 7 changer transitions 8/88 dead transitions. [2022-12-11 20:11:16,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 88 transitions, 486 flow [2022-12-11 20:11:16,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:16,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 538 transitions. [2022-12-11 20:11:16,206 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7078947368421052 [2022-12-11 20:11:16,206 INFO L175 Difference]: Start difference. First operand has 110 places, 65 transitions, 259 flow. Second operand 10 states and 538 transitions. [2022-12-11 20:11:16,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 88 transitions, 486 flow [2022-12-11 20:11:16,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 88 transitions, 444 flow, removed 19 selfloop flow, removed 6 redundant places. [2022-12-11 20:11:16,208 INFO L231 Difference]: Finished difference. Result has 115 places, 67 transitions, 297 flow [2022-12-11 20:11:16,208 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=297, PETRI_PLACES=115, PETRI_TRANSITIONS=67} [2022-12-11 20:11:16,209 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 45 predicate places. [2022-12-11 20:11:16,209 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 67 transitions, 297 flow [2022-12-11 20:11:16,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:16,209 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:16,209 INFO L214 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] [2022-12-11 20:11:16,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-11 20:11:16,209 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1078423777, now seen corresponding path program 16 times [2022-12-11 20:11:16,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:16,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500041546] [2022-12-11 20:11:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:16,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:16,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:16,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500041546] [2022-12-11 20:11:16,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500041546] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:16,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:16,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:16,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986818645] [2022-12-11 20:11:16,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:16,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:16,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:16,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:16,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:16,330 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:16,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 67 transitions, 297 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:16,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:16,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:16,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:16,465 INFO L130 PetriNetUnfolder]: 3/130 cut-off events. [2022-12-11 20:11:16,465 INFO L131 PetriNetUnfolder]: For 180/184 co-relation queries the response was YES. [2022-12-11 20:11:16,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 130 events. 3/130 cut-off events. For 180/184 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 357 event pairs, 1 based on Foata normal form. 3/132 useless extension candidates. Maximal degree in co-relation 341. Up to 19 conditions per place. [2022-12-11 20:11:16,466 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 30 selfloop transitions, 4 changer transitions 13/83 dead transitions. [2022-12-11 20:11:16,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 83 transitions, 474 flow [2022-12-11 20:11:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 533 transitions. [2022-12-11 20:11:16,467 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7013157894736842 [2022-12-11 20:11:16,467 INFO L175 Difference]: Start difference. First operand has 115 places, 67 transitions, 297 flow. Second operand 10 states and 533 transitions. [2022-12-11 20:11:16,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 83 transitions, 474 flow [2022-12-11 20:11:16,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 83 transitions, 440 flow, removed 13 selfloop flow, removed 6 redundant places. [2022-12-11 20:11:16,469 INFO L231 Difference]: Finished difference. Result has 118 places, 63 transitions, 240 flow [2022-12-11 20:11:16,469 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=240, PETRI_PLACES=118, PETRI_TRANSITIONS=63} [2022-12-11 20:11:16,470 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 48 predicate places. [2022-12-11 20:11:16,470 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 63 transitions, 240 flow [2022-12-11 20:11:16,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:16,470 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:16,470 INFO L214 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] [2022-12-11 20:11:16,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-11 20:11:16,470 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:16,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:16,471 INFO L85 PathProgramCache]: Analyzing trace with hash -247497949, now seen corresponding path program 17 times [2022-12-11 20:11:16,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:16,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16645494] [2022-12-11 20:11:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:16,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:16,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:16,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16645494] [2022-12-11 20:11:16,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16645494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:16,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:16,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:16,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531569187] [2022-12-11 20:11:16,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:16,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:16,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:16,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:16,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:16,653 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:16,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 63 transitions, 240 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:16,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:16,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:16,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:16,773 INFO L130 PetriNetUnfolder]: 3/102 cut-off events. [2022-12-11 20:11:16,774 INFO L131 PetriNetUnfolder]: For 114/116 co-relation queries the response was YES. [2022-12-11 20:11:16,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 102 events. 3/102 cut-off events. For 114/116 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 196 event pairs, 0 based on Foata normal form. 2/104 useless extension candidates. Maximal degree in co-relation 257. Up to 15 conditions per place. [2022-12-11 20:11:16,774 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 21 selfloop transitions, 3 changer transitions 13/73 dead transitions. [2022-12-11 20:11:16,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 73 transitions, 370 flow [2022-12-11 20:11:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:16,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:16,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 525 transitions. [2022-12-11 20:11:16,776 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6907894736842105 [2022-12-11 20:11:16,776 INFO L175 Difference]: Start difference. First operand has 118 places, 63 transitions, 240 flow. Second operand 10 states and 525 transitions. [2022-12-11 20:11:16,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 73 transitions, 370 flow [2022-12-11 20:11:16,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 73 transitions, 328 flow, removed 10 selfloop flow, removed 13 redundant places. [2022-12-11 20:11:16,778 INFO L231 Difference]: Finished difference. Result has 110 places, 58 transitions, 170 flow [2022-12-11 20:11:16,778 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=170, PETRI_PLACES=110, PETRI_TRANSITIONS=58} [2022-12-11 20:11:16,778 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 40 predicate places. [2022-12-11 20:11:16,778 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 58 transitions, 170 flow [2022-12-11 20:11:16,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:16,779 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:16,779 INFO L214 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] [2022-12-11 20:11:16,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-11 20:11:16,779 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:16,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:16,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1122353853, now seen corresponding path program 18 times [2022-12-11 20:11:16,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:16,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742124935] [2022-12-11 20:11:16,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:16,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:16,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:16,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742124935] [2022-12-11 20:11:16,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742124935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:16,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:16,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:16,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193932822] [2022-12-11 20:11:16,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:16,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:16,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:16,906 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:16,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 58 transitions, 170 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:16,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:16,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:16,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:17,027 INFO L130 PetriNetUnfolder]: 1/86 cut-off events. [2022-12-11 20:11:17,027 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-12-11 20:11:17,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 86 events. 1/86 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 194. Up to 11 conditions per place. [2022-12-11 20:11:17,028 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 20 selfloop transitions, 3 changer transitions 10/69 dead transitions. [2022-12-11 20:11:17,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 69 transitions, 313 flow [2022-12-11 20:11:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 524 transitions. [2022-12-11 20:11:17,029 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6894736842105263 [2022-12-11 20:11:17,029 INFO L175 Difference]: Start difference. First operand has 110 places, 58 transitions, 170 flow. Second operand 10 states and 524 transitions. [2022-12-11 20:11:17,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 69 transitions, 313 flow [2022-12-11 20:11:17,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 69 transitions, 255 flow, removed 8 selfloop flow, removed 15 redundant places. [2022-12-11 20:11:17,030 INFO L231 Difference]: Finished difference. Result has 100 places, 58 transitions, 158 flow [2022-12-11 20:11:17,031 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=158, PETRI_PLACES=100, PETRI_TRANSITIONS=58} [2022-12-11 20:11:17,031 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2022-12-11 20:11:17,031 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 58 transitions, 158 flow [2022-12-11 20:11:17,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:17,031 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:17,031 INFO L214 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] [2022-12-11 20:11:17,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-11 20:11:17,031 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:17,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash -219225669, now seen corresponding path program 19 times [2022-12-11 20:11:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:17,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365034662] [2022-12-11 20:11:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:17,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:17,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:17,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365034662] [2022-12-11 20:11:17,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365034662] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:17,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:17,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:17,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570784208] [2022-12-11 20:11:17,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:17,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:17,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:17,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:17,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:17,157 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:17,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 58 transitions, 158 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:17,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:17,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:17,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:17,275 INFO L130 PetriNetUnfolder]: 0/82 cut-off events. [2022-12-11 20:11:17,275 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-11 20:11:17,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 82 events. 0/82 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2022-12-11 20:11:17,275 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 18 selfloop transitions, 4 changer transitions 8/66 dead transitions. [2022-12-11 20:11:17,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 66 transitions, 259 flow [2022-12-11 20:11:17,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:17,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 521 transitions. [2022-12-11 20:11:17,276 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6855263157894737 [2022-12-11 20:11:17,276 INFO L175 Difference]: Start difference. First operand has 100 places, 58 transitions, 158 flow. Second operand 10 states and 521 transitions. [2022-12-11 20:11:17,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 66 transitions, 259 flow [2022-12-11 20:11:17,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 66 transitions, 236 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-12-11 20:11:17,277 INFO L231 Difference]: Finished difference. Result has 101 places, 58 transitions, 162 flow [2022-12-11 20:11:17,277 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=101, PETRI_TRANSITIONS=58} [2022-12-11 20:11:17,278 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 31 predicate places. [2022-12-11 20:11:17,278 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 58 transitions, 162 flow [2022-12-11 20:11:17,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:17,278 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:17,278 INFO L214 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] [2022-12-11 20:11:17,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-11 20:11:17,278 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:11:17,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:17,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1856728685, now seen corresponding path program 20 times [2022-12-11 20:11:17,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:17,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307677129] [2022-12-11 20:11:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:17,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:17,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:17,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307677129] [2022-12-11 20:11:17,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307677129] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:17,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:17,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 20:11:17,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111771166] [2022-12-11 20:11:17,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:17,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:11:17,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:11:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:11:17,426 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 76 [2022-12-11 20:11:17,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 58 transitions, 162 flow. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:17,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:17,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 76 [2022-12-11 20:11:17,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:17,551 INFO L130 PetriNetUnfolder]: 0/65 cut-off events. [2022-12-11 20:11:17,551 INFO L131 PetriNetUnfolder]: For 19/21 co-relation queries the response was YES. [2022-12-11 20:11:17,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 65 events. 0/65 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 1/66 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2022-12-11 20:11:17,551 INFO L137 encePairwiseOnDemand]: 67/76 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2022-12-11 20:11:17,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 59 transitions, 236 flow [2022-12-11 20:11:17,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:11:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:11:17,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 516 transitions. [2022-12-11 20:11:17,552 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6789473684210526 [2022-12-11 20:11:17,552 INFO L175 Difference]: Start difference. First operand has 101 places, 58 transitions, 162 flow. Second operand 10 states and 516 transitions. [2022-12-11 20:11:17,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 59 transitions, 236 flow [2022-12-11 20:11:17,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 59 transitions, 214 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-12-11 20:11:17,553 INFO L231 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2022-12-11 20:11:17,553 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2022-12-11 20:11:17,553 INFO L295 CegarLoopForPetriNet]: 70 programPoint places, 25 predicate places. [2022-12-11 20:11:17,553 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2022-12-11 20:11:17,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 10 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:11:17,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-11 20:11:17,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-11 20:11:17,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-11 20:11:17,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-11 20:11:17,557 INFO L445 BasicCegarLoop]: Path program histogram: [20, 10, 8, 5] [2022-12-11 20:11:17,560 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 20:11:17,560 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 20:11:17,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 08:11:17 BasicIcfg [2022-12-11 20:11:17,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 20:11:17,564 INFO L158 Benchmark]: Toolchain (without parser) took 14405.99ms. Allocated memory was 162.5MB in the beginning and 393.2MB in the end (delta: 230.7MB). Free memory was 125.9MB in the beginning and 293.7MB in the end (delta: -167.8MB). Peak memory consumption was 63.9MB. Max. memory is 8.0GB. [2022-12-11 20:11:17,564 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 162.5MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 20:11:17,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.29ms. Allocated memory is still 162.5MB. Free memory was 125.3MB in the beginning and 114.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-12-11 20:11:17,564 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.48ms. Allocated memory is still 162.5MB. Free memory was 114.8MB in the beginning and 113.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 20:11:17,564 INFO L158 Benchmark]: Boogie Preprocessor took 25.90ms. Allocated memory is still 162.5MB. Free memory was 113.3MB in the beginning and 112.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 20:11:17,564 INFO L158 Benchmark]: RCFGBuilder took 248.67ms. Allocated memory is still 162.5MB. Free memory was 112.2MB in the beginning and 100.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-11 20:11:17,565 INFO L158 Benchmark]: TraceAbstraction took 13898.42ms. Allocated memory was 162.5MB in the beginning and 393.2MB in the end (delta: 230.7MB). Free memory was 99.1MB in the beginning and 293.7MB in the end (delta: -194.6MB). Peak memory consumption was 36.6MB. Max. memory is 8.0GB. [2022-12-11 20:11:17,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 162.5MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.29ms. Allocated memory is still 162.5MB. Free memory was 125.3MB in the beginning and 114.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.48ms. Allocated memory is still 162.5MB. Free memory was 114.8MB in the beginning and 113.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.90ms. Allocated memory is still 162.5MB. Free memory was 113.3MB in the beginning and 112.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 248.67ms. Allocated memory is still 162.5MB. Free memory was 112.2MB in the beginning and 100.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 13898.42ms. Allocated memory was 162.5MB in the beginning and 393.2MB in the end (delta: 230.7MB). Free memory was 99.1MB in the beginning and 293.7MB in the end (delta: -194.6MB). Peak memory consumption was 36.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 96 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.8s, OverallIterations: 43, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2038 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2038 mSDsluCounter, 4928 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4019 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5052 IncrementalHoareTripleChecker+Invalid, 5060 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 909 mSDtfsCounter, 5052 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 668 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 574 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=521occurred in iteration=26, InterpolantAutomatonStates: 415, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 2494 NumberOfCodeBlocks, 2494 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 2451 ConstructedInterpolants, 0 QuantifiedInterpolants, 14049 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 43 InterpolantComputations, 43 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-11 20:11:17,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...