./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-word-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:45:51,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:45:51,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:45:51,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:45:51,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:45:51,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:45:51,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:45:51,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:45:51,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:45:51,644 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:45:51,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:45:51,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:45:51,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:45:51,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:45:51,647 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:45:51,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:45:51,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:45:51,648 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:45:51,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:45:51,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:45:51,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:45:51,653 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:45:51,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:45:51,653 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:45:51,653 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:45:51,654 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:45:51,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:45:51,654 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:45:51,655 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:45:51,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:45:51,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:45:51,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:45:51,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:45:51,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:45:51,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:45:51,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:45:51,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:45:51,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:45:51,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:45:51,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:45:51,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:45:51,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:45:51,659 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2024-11-22 13:45:51,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:45:51,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:45:51,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:45:51,954 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:45:51,954 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:45:51,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-11-22 13:45:53,368 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:45:53,552 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:45:53,552 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-11-22 13:45:53,560 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05efab74c/304aaf5d9f4b4432ada6ea40bb69ed10/FLAGa236b1c7e [2024-11-22 13:45:53,577 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05efab74c/304aaf5d9f4b4432ada6ea40bb69ed10 [2024-11-22 13:45:53,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:45:53,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:45:53,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:45:53,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:45:53,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:45:53,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa5b835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53, skipping insertion in model container [2024-11-22 13:45:53,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,616 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:45:53,810 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2874,2887] [2024-11-22 13:45:53,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:45:53,830 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:45:53,850 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2874,2887] [2024-11-22 13:45:53,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:45:53,867 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:45:53,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53 WrapperNode [2024-11-22 13:45:53,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:45:53,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:45:53,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:45:53,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:45:53,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,914 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 123 [2024-11-22 13:45:53,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:45:53,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:45:53,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:45:53,915 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:45:53,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,929 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,944 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-22 13:45:53,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,955 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:45:53,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:45:53,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:45:53,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:45:53,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (1/1) ... [2024-11-22 13:45:53,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:45:53,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:54,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:45:54,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:45:54,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:45:54,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:45:54,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:45:54,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:45:54,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:45:54,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:45:54,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:45:54,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:45:54,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:45:54,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:45:54,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:45:54,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:45:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:45:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:45:54,090 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:45:54,190 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:45:54,192 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:45:54,529 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:45:54,529 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:45:54,809 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:45:54,809 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-22 13:45:54,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:45:54 BoogieIcfgContainer [2024-11-22 13:45:54,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:45:54,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:45:54,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:45:54,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:45:54,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:45:53" (1/3) ... [2024-11-22 13:45:54,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54817321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:45:54, skipping insertion in model container [2024-11-22 13:45:54,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:53" (2/3) ... [2024-11-22 13:45:54,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54817321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:45:54, skipping insertion in model container [2024-11-22 13:45:54,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:45:54" (3/3) ... [2024-11-22 13:45:54,819 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2024-11-22 13:45:54,836 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:45:54,836 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:45:54,836 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:45:54,886 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 13:45:54,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 34 transitions, 82 flow [2024-11-22 13:45:54,958 INFO L124 PetriNetUnfolderBase]: 8/32 cut-off events. [2024-11-22 13:45:54,959 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:45:54,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 8/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-22 13:45:54,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 34 transitions, 82 flow [2024-11-22 13:45:54,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 31 transitions, 74 flow [2024-11-22 13:45:54,979 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:45:54,988 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1df91063, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:45:54,989 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-22 13:45:55,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:45:55,003 INFO L124 PetriNetUnfolderBase]: 8/30 cut-off events. [2024-11-22 13:45:55,004 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:45:55,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:55,007 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:55,007 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:45:55,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:55,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1992990212, now seen corresponding path program 1 times [2024-11-22 13:45:55,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:55,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162372313] [2024-11-22 13:45:55,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:55,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:55,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:55,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162372313] [2024-11-22 13:45:55,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162372313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:55,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:55,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:45:55,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287544934] [2024-11-22 13:45:55,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:55,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:45:55,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:55,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:45:55,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:45:55,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:45:55,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:55,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:55,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:45:55,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:55,979 INFO L124 PetriNetUnfolderBase]: 271/440 cut-off events. [2024-11-22 13:45:55,980 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-22 13:45:55,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 440 events. 271/440 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1484 event pairs, 138 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 824. Up to 343 conditions per place. [2024-11-22 13:45:55,989 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 40 selfloop transitions, 1 changer transitions 7/49 dead transitions. [2024-11-22 13:45:55,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 49 transitions, 218 flow [2024-11-22 13:45:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:45:55,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:45:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-11-22 13:45:56,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2024-11-22 13:45:56,004 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 74 flow. Second operand 4 states and 62 transitions. [2024-11-22 13:45:56,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 49 transitions, 218 flow [2024-11-22 13:45:56,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 13:45:56,014 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 75 flow [2024-11-22 13:45:56,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2024-11-22 13:45:56,020 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-11-22 13:45:56,021 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 75 flow [2024-11-22 13:45:56,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:56,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:56,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:56,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:45:56,023 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:45:56,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:56,023 INFO L85 PathProgramCache]: Analyzing trace with hash -837937516, now seen corresponding path program 2 times [2024-11-22 13:45:56,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:56,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849500215] [2024-11-22 13:45:56,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:45:56,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:56,062 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:45:56,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:56,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:56,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849500215] [2024-11-22 13:45:56,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849500215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:56,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:56,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:45:56,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27879894] [2024-11-22 13:45:56,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:56,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:45:56,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:56,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:45:56,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:45:56,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:45:56,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:56,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:56,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:45:56,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:56,554 INFO L124 PetriNetUnfolderBase]: 309/520 cut-off events. [2024-11-22 13:45:56,555 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-22 13:45:56,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 520 events. 309/520 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1927 event pairs, 174 based on Foata normal form. 6/428 useless extension candidates. Maximal degree in co-relation 1090. Up to 403 conditions per place. [2024-11-22 13:45:56,559 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 40 selfloop transitions, 1 changer transitions 9/51 dead transitions. [2024-11-22 13:45:56,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 51 transitions, 225 flow [2024-11-22 13:45:56,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:45:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:45:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-22 13:45:56,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-11-22 13:45:56,561 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 75 flow. Second operand 4 states and 64 transitions. [2024-11-22 13:45:56,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 51 transitions, 225 flow [2024-11-22 13:45:56,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 51 transitions, 219 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-22 13:45:56,563 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 81 flow [2024-11-22 13:45:56,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2024-11-22 13:45:56,564 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-11-22 13:45:56,564 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 81 flow [2024-11-22 13:45:56,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:56,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:56,565 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:56,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:45:56,565 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:45:56,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:56,566 INFO L85 PathProgramCache]: Analyzing trace with hash -840877155, now seen corresponding path program 1 times [2024-11-22 13:45:56,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:56,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231435594] [2024-11-22 13:45:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:56,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:56,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:56,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231435594] [2024-11-22 13:45:56,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231435594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:56,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:56,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:45:56,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528971566] [2024-11-22 13:45:56,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:56,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:45:56,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:45:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:45:56,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:45:56,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:56,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:56,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:45:56,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:56,690 INFO L124 PetriNetUnfolderBase]: 223/370 cut-off events. [2024-11-22 13:45:56,691 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-11-22 13:45:56,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 370 events. 223/370 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1164 event pairs, 73 based on Foata normal form. 21/327 useless extension candidates. Maximal degree in co-relation 797. Up to 302 conditions per place. [2024-11-22 13:45:56,694 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 33 selfloop transitions, 2 changer transitions 5/41 dead transitions. [2024-11-22 13:45:56,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 187 flow [2024-11-22 13:45:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:45:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:45:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-22 13:45:56,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 13:45:56,696 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 81 flow. Second operand 3 states and 51 transitions. [2024-11-22 13:45:56,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 187 flow [2024-11-22 13:45:56,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 184 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-22 13:45:56,698 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2024-11-22 13:45:56,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2024-11-22 13:45:56,699 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-11-22 13:45:56,699 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2024-11-22 13:45:56,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:56,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:56,700 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:56,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:45:56,700 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:45:56,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:56,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1355277831, now seen corresponding path program 1 times [2024-11-22 13:45:56,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:56,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168960851] [2024-11-22 13:45:56,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:56,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:57,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:57,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168960851] [2024-11-22 13:45:57,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168960851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:57,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:57,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:45:57,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941190199] [2024-11-22 13:45:57,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:57,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:45:57,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:57,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:45:57,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:45:57,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:45:57,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:57,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:57,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:45:57,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:57,504 INFO L124 PetriNetUnfolderBase]: 564/938 cut-off events. [2024-11-22 13:45:57,505 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-22 13:45:57,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 938 events. 564/938 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3924 event pairs, 64 based on Foata normal form. 1/777 useless extension candidates. Maximal degree in co-relation 545. Up to 233 conditions per place. [2024-11-22 13:45:57,512 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 107 selfloop transitions, 19 changer transitions 1/128 dead transitions. [2024-11-22 13:45:57,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 128 transitions, 588 flow [2024-11-22 13:45:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:45:57,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 13:45:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-11-22 13:45:57,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4197860962566845 [2024-11-22 13:45:57,518 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 11 states and 157 transitions. [2024-11-22 13:45:57,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 128 transitions, 588 flow [2024-11-22 13:45:57,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 128 transitions, 560 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-22 13:45:57,523 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 204 flow [2024-11-22 13:45:57,524 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=204, PETRI_PLACES=45, PETRI_TRANSITIONS=51} [2024-11-22 13:45:57,525 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-11-22 13:45:57,526 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 204 flow [2024-11-22 13:45:57,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:57,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:57,526 INFO L204 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] [2024-11-22 13:45:57,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:45:57,527 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:45:57,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:57,529 INFO L85 PathProgramCache]: Analyzing trace with hash 535894153, now seen corresponding path program 1 times [2024-11-22 13:45:57,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:57,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015452581] [2024-11-22 13:45:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:57,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:57,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:57,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015452581] [2024-11-22 13:45:57,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015452581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:45:57,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622792423] [2024-11-22 13:45:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:57,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:57,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:57,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:45:57,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:45:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:57,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 13:45:57,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:45:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:58,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:45:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:59,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622792423] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:45:59,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:45:59,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-11-22 13:45:59,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697456763] [2024-11-22 13:45:59,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:59,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:45:59,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:59,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:45:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2024-11-22 13:45:59,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:45:59,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 51 transitions, 204 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:59,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:59,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:45:59,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:00,208 INFO L124 PetriNetUnfolderBase]: 1208/2020 cut-off events. [2024-11-22 13:46:00,208 INFO L125 PetriNetUnfolderBase]: For 536/536 co-relation queries the response was YES. [2024-11-22 13:46:00,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5109 conditions, 2020 events. 1208/2020 cut-off events. For 536/536 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10290 event pairs, 134 based on Foata normal form. 1/1839 useless extension candidates. Maximal degree in co-relation 3279. Up to 442 conditions per place. [2024-11-22 13:46:00,221 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 137 selfloop transitions, 52 changer transitions 7/197 dead transitions. [2024-11-22 13:46:00,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 197 transitions, 1073 flow [2024-11-22 13:46:00,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:46:00,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:46:00,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 201 transitions. [2024-11-22 13:46:00,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45475113122171945 [2024-11-22 13:46:00,224 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 204 flow. Second operand 13 states and 201 transitions. [2024-11-22 13:46:00,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 197 transitions, 1073 flow [2024-11-22 13:46:00,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 197 transitions, 1069 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-22 13:46:00,229 INFO L231 Difference]: Finished difference. Result has 66 places, 86 transitions, 594 flow [2024-11-22 13:46:00,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=594, PETRI_PLACES=66, PETRI_TRANSITIONS=86} [2024-11-22 13:46:00,230 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-11-22 13:46:00,230 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 86 transitions, 594 flow [2024-11-22 13:46:00,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:00,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:00,230 INFO L204 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] [2024-11-22 13:46:00,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:46:00,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:00,431 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:00,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1296876059, now seen corresponding path program 1 times [2024-11-22 13:46:00,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:00,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270862104] [2024-11-22 13:46:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:00,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:00,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:00,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270862104] [2024-11-22 13:46:00,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270862104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:00,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528407367] [2024-11-22 13:46:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:00,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:00,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:00,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:00,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:46:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:00,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 13:46:00,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:01,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:01,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528407367] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:01,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:01,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 23 [2024-11-22 13:46:01,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017076487] [2024-11-22 13:46:01,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:01,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:01,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:01,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:01,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-11-22 13:46:01,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:01,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 86 transitions, 594 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:01,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:01,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:01,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:02,907 INFO L124 PetriNetUnfolderBase]: 1653/2760 cut-off events. [2024-11-22 13:46:02,907 INFO L125 PetriNetUnfolderBase]: For 3797/3797 co-relation queries the response was YES. [2024-11-22 13:46:02,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8617 conditions, 2760 events. 1653/2760 cut-off events. For 3797/3797 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 15007 event pairs, 352 based on Foata normal form. 1/2510 useless extension candidates. Maximal degree in co-relation 8542. Up to 762 conditions per place. [2024-11-22 13:46:02,933 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 194 selfloop transitions, 49 changer transitions 8/252 dead transitions. [2024-11-22 13:46:02,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 252 transitions, 1756 flow [2024-11-22 13:46:02,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:46:02,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:46:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 248 transitions. [2024-11-22 13:46:02,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2024-11-22 13:46:02,936 INFO L175 Difference]: Start difference. First operand has 66 places, 86 transitions, 594 flow. Second operand 14 states and 248 transitions. [2024-11-22 13:46:02,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 252 transitions, 1756 flow [2024-11-22 13:46:02,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 252 transitions, 1729 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-22 13:46:02,965 INFO L231 Difference]: Finished difference. Result has 83 places, 105 transitions, 873 flow [2024-11-22 13:46:02,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=873, PETRI_PLACES=83, PETRI_TRANSITIONS=105} [2024-11-22 13:46:02,967 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-11-22 13:46:02,968 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 105 transitions, 873 flow [2024-11-22 13:46:02,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:02,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:02,968 INFO L204 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] [2024-11-22 13:46:02,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 13:46:03,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 13:46:03,169 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:03,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:03,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1128262593, now seen corresponding path program 2 times [2024-11-22 13:46:03,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:03,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140454408] [2024-11-22 13:46:03,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:03,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:03,185 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:03,186 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:03,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:03,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140454408] [2024-11-22 13:46:03,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140454408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:03,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:03,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:46:03,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43130673] [2024-11-22 13:46:03,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:03,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:46:03,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:03,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:46:03,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:46:03,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:03,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 105 transitions, 873 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:03,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:03,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:03,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:04,051 INFO L124 PetriNetUnfolderBase]: 1725/2929 cut-off events. [2024-11-22 13:46:04,051 INFO L125 PetriNetUnfolderBase]: For 6957/6957 co-relation queries the response was YES. [2024-11-22 13:46:04,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9939 conditions, 2929 events. 1725/2929 cut-off events. For 6957/6957 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 16377 event pairs, 280 based on Foata normal form. 1/2675 useless extension candidates. Maximal degree in co-relation 9843. Up to 762 conditions per place. [2024-11-22 13:46:04,074 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 139 selfloop transitions, 65 changer transitions 8/213 dead transitions. [2024-11-22 13:46:04,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 213 transitions, 1756 flow [2024-11-22 13:46:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:46:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:46:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 191 transitions. [2024-11-22 13:46:04,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4321266968325792 [2024-11-22 13:46:04,077 INFO L175 Difference]: Start difference. First operand has 83 places, 105 transitions, 873 flow. Second operand 13 states and 191 transitions. [2024-11-22 13:46:04,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 213 transitions, 1756 flow [2024-11-22 13:46:04,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 213 transitions, 1687 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-11-22 13:46:04,100 INFO L231 Difference]: Finished difference. Result has 99 places, 116 transitions, 1168 flow [2024-11-22 13:46:04,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1168, PETRI_PLACES=99, PETRI_TRANSITIONS=116} [2024-11-22 13:46:04,101 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-11-22 13:46:04,101 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 116 transitions, 1168 flow [2024-11-22 13:46:04,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:04,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:04,102 INFO L204 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] [2024-11-22 13:46:04,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:46:04,102 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:04,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash 558796803, now seen corresponding path program 2 times [2024-11-22 13:46:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:04,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084543370] [2024-11-22 13:46:04,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:04,119 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:04,119 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:04,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:04,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084543370] [2024-11-22 13:46:04,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084543370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:04,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:04,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:46:04,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136704701] [2024-11-22 13:46:04,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:04,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:04,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:04,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:04,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:46:04,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:04,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 116 transitions, 1168 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:04,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:04,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:04,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:05,007 INFO L124 PetriNetUnfolderBase]: 1765/3020 cut-off events. [2024-11-22 13:46:05,007 INFO L125 PetriNetUnfolderBase]: For 10796/10796 co-relation queries the response was YES. [2024-11-22 13:46:05,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10987 conditions, 3020 events. 1765/3020 cut-off events. For 10796/10796 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17103 event pairs, 304 based on Foata normal form. 1/2762 useless extension candidates. Maximal degree in co-relation 10874. Up to 871 conditions per place. [2024-11-22 13:46:05,035 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 143 selfloop transitions, 70 changer transitions 8/222 dead transitions. [2024-11-22 13:46:05,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 222 transitions, 2103 flow [2024-11-22 13:46:05,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:46:05,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:46:05,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 187 transitions. [2024-11-22 13:46:05,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-11-22 13:46:05,037 INFO L175 Difference]: Start difference. First operand has 99 places, 116 transitions, 1168 flow. Second operand 13 states and 187 transitions. [2024-11-22 13:46:05,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 222 transitions, 2103 flow [2024-11-22 13:46:05,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 222 transitions, 2032 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-11-22 13:46:05,082 INFO L231 Difference]: Finished difference. Result has 113 places, 127 transitions, 1507 flow [2024-11-22 13:46:05,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1507, PETRI_PLACES=113, PETRI_TRANSITIONS=127} [2024-11-22 13:46:05,083 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-11-22 13:46:05,083 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 127 transitions, 1507 flow [2024-11-22 13:46:05,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:05,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:05,085 INFO L204 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] [2024-11-22 13:46:05,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:46:05,085 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:05,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:05,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1133347400, now seen corresponding path program 1 times [2024-11-22 13:46:05,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:05,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088612683] [2024-11-22 13:46:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:05,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:05,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:05,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088612683] [2024-11-22 13:46:05,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088612683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:05,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:05,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:05,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934656845] [2024-11-22 13:46:05,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:05,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:05,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:05,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:05,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:05,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:05,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 127 transitions, 1507 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:05,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:05,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:05,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:05,515 INFO L124 PetriNetUnfolderBase]: 1338/2339 cut-off events. [2024-11-22 13:46:05,515 INFO L125 PetriNetUnfolderBase]: For 11153/11153 co-relation queries the response was YES. [2024-11-22 13:46:05,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9045 conditions, 2339 events. 1338/2339 cut-off events. For 11153/11153 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12947 event pairs, 781 based on Foata normal form. 0/2170 useless extension candidates. Maximal degree in co-relation 8945. Up to 1251 conditions per place. [2024-11-22 13:46:05,537 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 128 selfloop transitions, 16 changer transitions 7/152 dead transitions. [2024-11-22 13:46:05,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 152 transitions, 1877 flow [2024-11-22 13:46:05,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:46:05,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:46:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-11-22 13:46:05,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-11-22 13:46:05,539 INFO L175 Difference]: Start difference. First operand has 113 places, 127 transitions, 1507 flow. Second operand 6 states and 84 transitions. [2024-11-22 13:46:05,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 152 transitions, 1877 flow [2024-11-22 13:46:05,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 152 transitions, 1800 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-11-22 13:46:05,574 INFO L231 Difference]: Finished difference. Result has 115 places, 110 transitions, 1236 flow [2024-11-22 13:46:05,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1236, PETRI_PLACES=115, PETRI_TRANSITIONS=110} [2024-11-22 13:46:05,575 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-11-22 13:46:05,575 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 110 transitions, 1236 flow [2024-11-22 13:46:05,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:05,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:05,575 INFO L204 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] [2024-11-22 13:46:05,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:46:05,576 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:05,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1972501553, now seen corresponding path program 3 times [2024-11-22 13:46:05,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:05,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116322741] [2024-11-22 13:46:05,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:05,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:05,588 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:46:05,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:05,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:05,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116322741] [2024-11-22 13:46:05,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116322741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:05,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:05,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:46:05,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291180354] [2024-11-22 13:46:05,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:05,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:05,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:05,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:05,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:46:05,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:05,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 110 transitions, 1236 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:05,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:05,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:05,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:06,443 INFO L124 PetriNetUnfolderBase]: 1295/2255 cut-off events. [2024-11-22 13:46:06,444 INFO L125 PetriNetUnfolderBase]: For 10824/10824 co-relation queries the response was YES. [2024-11-22 13:46:06,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9014 conditions, 2255 events. 1295/2255 cut-off events. For 10824/10824 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12316 event pairs, 247 based on Foata normal form. 1/2139 useless extension candidates. Maximal degree in co-relation 8811. Up to 1145 conditions per place. [2024-11-22 13:46:06,470 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 118 selfloop transitions, 51 changer transitions 11/181 dead transitions. [2024-11-22 13:46:06,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 181 transitions, 1839 flow [2024-11-22 13:46:06,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:46:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:46:06,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-11-22 13:46:06,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36199095022624433 [2024-11-22 13:46:06,473 INFO L175 Difference]: Start difference. First operand has 115 places, 110 transitions, 1236 flow. Second operand 13 states and 160 transitions. [2024-11-22 13:46:06,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 181 transitions, 1839 flow [2024-11-22 13:46:06,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 181 transitions, 1821 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-22 13:46:06,515 INFO L231 Difference]: Finished difference. Result has 127 places, 110 transitions, 1328 flow [2024-11-22 13:46:06,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1328, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2024-11-22 13:46:06,517 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-11-22 13:46:06,517 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 1328 flow [2024-11-22 13:46:06,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:06,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:06,518 INFO L204 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] [2024-11-22 13:46:06,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:46:06,518 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:06,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:06,519 INFO L85 PathProgramCache]: Analyzing trace with hash 199085239, now seen corresponding path program 3 times [2024-11-22 13:46:06,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:06,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002917756] [2024-11-22 13:46:06,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:06,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:06,542 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:46:06,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:06,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:06,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002917756] [2024-11-22 13:46:06,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002917756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:06,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:06,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 13:46:06,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346788262] [2024-11-22 13:46:06,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:06,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:46:06,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:46:06,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:46:06,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:06,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 1328 flow. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:06,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:06,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:06,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:07,628 INFO L124 PetriNetUnfolderBase]: 1177/2083 cut-off events. [2024-11-22 13:46:07,629 INFO L125 PetriNetUnfolderBase]: For 11446/11446 co-relation queries the response was YES. [2024-11-22 13:46:07,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 2083 events. 1177/2083 cut-off events. For 11446/11446 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11433 event pairs, 275 based on Foata normal form. 29/2008 useless extension candidates. Maximal degree in co-relation 8381. Up to 1320 conditions per place. [2024-11-22 13:46:07,655 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 122 selfloop transitions, 59 changer transitions 13/195 dead transitions. [2024-11-22 13:46:07,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 195 transitions, 2069 flow [2024-11-22 13:46:07,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:46:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:46:07,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 175 transitions. [2024-11-22 13:46:07,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-11-22 13:46:07,657 INFO L175 Difference]: Start difference. First operand has 127 places, 110 transitions, 1328 flow. Second operand 14 states and 175 transitions. [2024-11-22 13:46:07,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 195 transitions, 2069 flow [2024-11-22 13:46:07,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 195 transitions, 1993 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-22 13:46:07,701 INFO L231 Difference]: Finished difference. Result has 142 places, 122 transitions, 1559 flow [2024-11-22 13:46:07,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1559, PETRI_PLACES=142, PETRI_TRANSITIONS=122} [2024-11-22 13:46:07,702 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-11-22 13:46:07,702 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 122 transitions, 1559 flow [2024-11-22 13:46:07,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:07,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:07,702 INFO L204 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] [2024-11-22 13:46:07,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:46:07,703 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:07,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:07,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1260427762, now seen corresponding path program 1 times [2024-11-22 13:46:07,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:07,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494094233] [2024-11-22 13:46:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:07,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:07,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:07,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494094233] [2024-11-22 13:46:07,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494094233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:07,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:07,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:07,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953093087] [2024-11-22 13:46:07,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:07,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:07,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:07,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:07,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:07,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:07,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 122 transitions, 1559 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:07,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:07,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:07,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:08,101 INFO L124 PetriNetUnfolderBase]: 892/1637 cut-off events. [2024-11-22 13:46:08,102 INFO L125 PetriNetUnfolderBase]: For 10195/10195 co-relation queries the response was YES. [2024-11-22 13:46:08,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6967 conditions, 1637 events. 892/1637 cut-off events. For 10195/10195 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8848 event pairs, 528 based on Foata normal form. 0/1591 useless extension candidates. Maximal degree in co-relation 6876. Up to 1086 conditions per place. [2024-11-22 13:46:08,115 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 98 selfloop transitions, 9 changer transitions 22/130 dead transitions. [2024-11-22 13:46:08,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 130 transitions, 1727 flow [2024-11-22 13:46:08,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:46:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:46:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-11-22 13:46:08,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37745098039215685 [2024-11-22 13:46:08,116 INFO L175 Difference]: Start difference. First operand has 142 places, 122 transitions, 1559 flow. Second operand 6 states and 77 transitions. [2024-11-22 13:46:08,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 130 transitions, 1727 flow [2024-11-22 13:46:08,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 1630 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-11-22 13:46:08,147 INFO L231 Difference]: Finished difference. Result has 135 places, 90 transitions, 945 flow [2024-11-22 13:46:08,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=945, PETRI_PLACES=135, PETRI_TRANSITIONS=90} [2024-11-22 13:46:08,149 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-11-22 13:46:08,149 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 90 transitions, 945 flow [2024-11-22 13:46:08,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:08,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:08,150 INFO L204 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] [2024-11-22 13:46:08,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:46:08,150 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:08,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:08,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1186614687, now seen corresponding path program 4 times [2024-11-22 13:46:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:08,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056457444] [2024-11-22 13:46:08,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:08,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:08,168 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:08,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:08,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:08,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056457444] [2024-11-22 13:46:08,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056457444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:08,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303926586] [2024-11-22 13:46:08,417 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:08,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:08,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:08,420 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:08,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:46:08,497 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:08,498 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:08,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 13:46:08,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:08,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:09,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303926586] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:09,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:09,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 26 [2024-11-22 13:46:09,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21172852] [2024-11-22 13:46:09,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:09,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:46:09,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:09,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:46:09,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-11-22 13:46:09,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:09,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 90 transitions, 945 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:09,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:09,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:09,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:10,115 INFO L124 PetriNetUnfolderBase]: 922/1650 cut-off events. [2024-11-22 13:46:10,116 INFO L125 PetriNetUnfolderBase]: For 8619/8619 co-relation queries the response was YES. [2024-11-22 13:46:10,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7062 conditions, 1650 events. 922/1650 cut-off events. For 8619/8619 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8676 event pairs, 173 based on Foata normal form. 2/1652 useless extension candidates. Maximal degree in co-relation 6975. Up to 544 conditions per place. [2024-11-22 13:46:10,133 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 156 selfloop transitions, 54 changer transitions 12/223 dead transitions. [2024-11-22 13:46:10,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 223 transitions, 2224 flow [2024-11-22 13:46:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:46:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:46:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 217 transitions. [2024-11-22 13:46:10,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42549019607843136 [2024-11-22 13:46:10,136 INFO L175 Difference]: Start difference. First operand has 135 places, 90 transitions, 945 flow. Second operand 15 states and 217 transitions. [2024-11-22 13:46:10,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 223 transitions, 2224 flow [2024-11-22 13:46:10,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 223 transitions, 2041 flow, removed 74 selfloop flow, removed 14 redundant places. [2024-11-22 13:46:10,172 INFO L231 Difference]: Finished difference. Result has 135 places, 107 transitions, 1219 flow [2024-11-22 13:46:10,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1219, PETRI_PLACES=135, PETRI_TRANSITIONS=107} [2024-11-22 13:46:10,172 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-11-22 13:46:10,172 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 107 transitions, 1219 flow [2024-11-22 13:46:10,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:10,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:10,173 INFO L204 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] [2024-11-22 13:46:10,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 13:46:10,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:10,379 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:10,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:10,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1362675513, now seen corresponding path program 4 times [2024-11-22 13:46:10,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:10,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808046428] [2024-11-22 13:46:10,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:10,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:10,397 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:10,397 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:10,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:10,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808046428] [2024-11-22 13:46:10,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808046428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:10,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740276153] [2024-11-22 13:46:10,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:10,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:10,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:10,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:10,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:46:10,706 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:10,706 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:10,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 13:46:10,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:10,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:11,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740276153] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:11,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:11,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-11-22 13:46:11,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325993057] [2024-11-22 13:46:11,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:11,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:46:11,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:11,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:46:11,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2024-11-22 13:46:11,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:11,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 107 transitions, 1219 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:11,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:11,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:11,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:11,924 INFO L124 PetriNetUnfolderBase]: 872/1540 cut-off events. [2024-11-22 13:46:11,924 INFO L125 PetriNetUnfolderBase]: For 8543/8543 co-relation queries the response was YES. [2024-11-22 13:46:11,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6985 conditions, 1540 events. 872/1540 cut-off events. For 8543/8543 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7861 event pairs, 204 based on Foata normal form. 1/1541 useless extension candidates. Maximal degree in co-relation 6901. Up to 565 conditions per place. [2024-11-22 13:46:11,940 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 118 selfloop transitions, 47 changer transitions 8/174 dead transitions. [2024-11-22 13:46:11,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 174 transitions, 1883 flow [2024-11-22 13:46:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:46:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:46:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-11-22 13:46:11,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-11-22 13:46:11,943 INFO L175 Difference]: Start difference. First operand has 135 places, 107 transitions, 1219 flow. Second operand 12 states and 156 transitions. [2024-11-22 13:46:11,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 174 transitions, 1883 flow [2024-11-22 13:46:11,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 174 transitions, 1647 flow, removed 54 selfloop flow, removed 17 redundant places. [2024-11-22 13:46:11,973 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 1138 flow [2024-11-22 13:46:11,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1138, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2024-11-22 13:46:11,974 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-11-22 13:46:11,974 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 1138 flow [2024-11-22 13:46:11,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:11,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:11,975 INFO L204 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] [2024-11-22 13:46:11,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 13:46:12,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:12,175 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:12,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:12,176 INFO L85 PathProgramCache]: Analyzing trace with hash 621901887, now seen corresponding path program 5 times [2024-11-22 13:46:12,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:12,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559937642] [2024-11-22 13:46:12,176 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:12,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:12,198 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:12,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:12,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559937642] [2024-11-22 13:46:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559937642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802478626] [2024-11-22 13:46:12,392 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:12,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:12,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:12,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:12,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:46:12,463 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:12,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:12,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 13:46:12,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:12,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:13,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802478626] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:13,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:13,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-11-22 13:46:13,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271752658] [2024-11-22 13:46:13,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:13,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:46:13,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:13,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:46:13,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2024-11-22 13:46:13,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:13,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 1138 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:13,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:13,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:13,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:13,925 INFO L124 PetriNetUnfolderBase]: 867/1535 cut-off events. [2024-11-22 13:46:13,925 INFO L125 PetriNetUnfolderBase]: For 6145/6145 co-relation queries the response was YES. [2024-11-22 13:46:13,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6657 conditions, 1535 events. 867/1535 cut-off events. For 6145/6145 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7782 event pairs, 201 based on Foata normal form. 1/1536 useless extension candidates. Maximal degree in co-relation 6579. Up to 565 conditions per place. [2024-11-22 13:46:13,939 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 134 selfloop transitions, 43 changer transitions 12/190 dead transitions. [2024-11-22 13:46:13,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 190 transitions, 1910 flow [2024-11-22 13:46:13,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:46:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:46:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 182 transitions. [2024-11-22 13:46:13,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-11-22 13:46:13,941 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 1138 flow. Second operand 13 states and 182 transitions. [2024-11-22 13:46:13,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 190 transitions, 1910 flow [2024-11-22 13:46:13,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 190 transitions, 1837 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-11-22 13:46:13,964 INFO L231 Difference]: Finished difference. Result has 131 places, 105 transitions, 1119 flow [2024-11-22 13:46:13,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1119, PETRI_PLACES=131, PETRI_TRANSITIONS=105} [2024-11-22 13:46:13,965 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-11-22 13:46:13,965 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 105 transitions, 1119 flow [2024-11-22 13:46:13,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:13,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:13,965 INFO L204 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] [2024-11-22 13:46:13,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 13:46:14,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 13:46:14,166 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:14,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:14,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2060358107, now seen corresponding path program 6 times [2024-11-22 13:46:14,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:14,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501244531] [2024-11-22 13:46:14,167 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:46:14,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:14,178 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:46:14,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:14,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501244531] [2024-11-22 13:46:14,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501244531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:14,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:14,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:46:14,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836383683] [2024-11-22 13:46:14,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:14,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:14,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:14,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:14,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:46:14,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:14,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 105 transitions, 1119 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:14,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:14,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:14,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:14,806 INFO L124 PetriNetUnfolderBase]: 864/1528 cut-off events. [2024-11-22 13:46:14,806 INFO L125 PetriNetUnfolderBase]: For 5975/5975 co-relation queries the response was YES. [2024-11-22 13:46:14,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6734 conditions, 1528 events. 864/1528 cut-off events. For 5975/5975 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7733 event pairs, 185 based on Foata normal form. 1/1529 useless extension candidates. Maximal degree in co-relation 6660. Up to 501 conditions per place. [2024-11-22 13:46:14,821 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 113 selfloop transitions, 44 changer transitions 9/167 dead transitions. [2024-11-22 13:46:14,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 167 transitions, 1737 flow [2024-11-22 13:46:14,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:46:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:46:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-11-22 13:46:14,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-11-22 13:46:14,823 INFO L175 Difference]: Start difference. First operand has 131 places, 105 transitions, 1119 flow. Second operand 12 states and 149 transitions. [2024-11-22 13:46:14,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 167 transitions, 1737 flow [2024-11-22 13:46:14,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 167 transitions, 1654 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-11-22 13:46:14,845 INFO L231 Difference]: Finished difference. Result has 130 places, 105 transitions, 1145 flow [2024-11-22 13:46:14,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1145, PETRI_PLACES=130, PETRI_TRANSITIONS=105} [2024-11-22 13:46:14,846 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-11-22 13:46:14,846 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 105 transitions, 1145 flow [2024-11-22 13:46:14,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:14,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:14,847 INFO L204 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] [2024-11-22 13:46:14,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 13:46:14,848 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:14,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:14,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1548036335, now seen corresponding path program 5 times [2024-11-22 13:46:14,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:14,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716701898] [2024-11-22 13:46:14,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:14,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:14,861 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:14,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:15,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:15,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716701898] [2024-11-22 13:46:15,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716701898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:15,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994062420] [2024-11-22 13:46:15,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:15,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:15,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:15,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:15,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 13:46:15,117 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:15,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:15,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 13:46:15,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:15,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:15,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:15,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994062420] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:15,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:15,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 22 [2024-11-22 13:46:15,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722301714] [2024-11-22 13:46:15,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:15,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:15,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:15,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:15,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:46:15,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:15,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 105 transitions, 1145 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:15,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:15,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:15,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:16,416 INFO L124 PetriNetUnfolderBase]: 872/1548 cut-off events. [2024-11-22 13:46:16,416 INFO L125 PetriNetUnfolderBase]: For 6339/6339 co-relation queries the response was YES. [2024-11-22 13:46:16,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6964 conditions, 1548 events. 872/1548 cut-off events. For 6339/6339 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7931 event pairs, 252 based on Foata normal form. 1/1549 useless extension candidates. Maximal degree in co-relation 6891. Up to 1020 conditions per place. [2024-11-22 13:46:16,426 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 94 selfloop transitions, 29 changer transitions 21/145 dead transitions. [2024-11-22 13:46:16,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 145 transitions, 1595 flow [2024-11-22 13:46:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:46:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:46:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-11-22 13:46:16,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30637254901960786 [2024-11-22 13:46:16,428 INFO L175 Difference]: Start difference. First operand has 130 places, 105 transitions, 1145 flow. Second operand 12 states and 125 transitions. [2024-11-22 13:46:16,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 145 transitions, 1595 flow [2024-11-22 13:46:16,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 145 transitions, 1413 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-11-22 13:46:16,448 INFO L231 Difference]: Finished difference. Result has 128 places, 98 transitions, 936 flow [2024-11-22 13:46:16,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=936, PETRI_PLACES=128, PETRI_TRANSITIONS=98} [2024-11-22 13:46:16,449 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-11-22 13:46:16,449 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 98 transitions, 936 flow [2024-11-22 13:46:16,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:16,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:16,450 INFO L204 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] [2024-11-22 13:46:16,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 13:46:16,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 13:46:16,651 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:16,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:16,651 INFO L85 PathProgramCache]: Analyzing trace with hash 401838977, now seen corresponding path program 6 times [2024-11-22 13:46:16,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:16,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961500343] [2024-11-22 13:46:16,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:46:16,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:16,666 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:46:16,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:16,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:16,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961500343] [2024-11-22 13:46:16,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961500343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:16,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:16,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:46:16,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849878044] [2024-11-22 13:46:16,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:16,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:46:16,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:16,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:46:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:46:16,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:16,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 98 transitions, 936 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:16,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:16,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:16,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:17,254 INFO L124 PetriNetUnfolderBase]: 828/1461 cut-off events. [2024-11-22 13:46:17,254 INFO L125 PetriNetUnfolderBase]: For 5186/5186 co-relation queries the response was YES. [2024-11-22 13:46:17,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6038 conditions, 1461 events. 828/1461 cut-off events. For 5186/5186 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7277 event pairs, 252 based on Foata normal form. 1/1462 useless extension candidates. Maximal degree in co-relation 5970. Up to 1020 conditions per place. [2024-11-22 13:46:17,266 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 74 selfloop transitions, 24 changer transitions 26/125 dead transitions. [2024-11-22 13:46:17,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 125 transitions, 1281 flow [2024-11-22 13:46:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:46:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:46:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-11-22 13:46:17,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3029411764705882 [2024-11-22 13:46:17,267 INFO L175 Difference]: Start difference. First operand has 128 places, 98 transitions, 936 flow. Second operand 10 states and 103 transitions. [2024-11-22 13:46:17,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 125 transitions, 1281 flow [2024-11-22 13:46:17,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 125 transitions, 1186 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-11-22 13:46:17,285 INFO L231 Difference]: Finished difference. Result has 122 places, 89 transitions, 802 flow [2024-11-22 13:46:17,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=802, PETRI_PLACES=122, PETRI_TRANSITIONS=89} [2024-11-22 13:46:17,286 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-11-22 13:46:17,286 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 89 transitions, 802 flow [2024-11-22 13:46:17,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:17,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:17,286 INFO L204 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] [2024-11-22 13:46:17,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 13:46:17,287 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:17,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1620332874, now seen corresponding path program 1 times [2024-11-22 13:46:17,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:17,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868114625] [2024-11-22 13:46:17,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:17,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:17,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:17,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868114625] [2024-11-22 13:46:17,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868114625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:17,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:17,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:17,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966023266] [2024-11-22 13:46:17,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:17,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:17,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:17,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:17,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:17,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:17,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 89 transitions, 802 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:17,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:17,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:17,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:17,544 INFO L124 PetriNetUnfolderBase]: 633/1125 cut-off events. [2024-11-22 13:46:17,545 INFO L125 PetriNetUnfolderBase]: For 3921/3921 co-relation queries the response was YES. [2024-11-22 13:46:17,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4581 conditions, 1125 events. 633/1125 cut-off events. For 3921/3921 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5333 event pairs, 395 based on Foata normal form. 29/1154 useless extension candidates. Maximal degree in co-relation 4524. Up to 754 conditions per place. [2024-11-22 13:46:17,553 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 76 selfloop transitions, 7 changer transitions 16/100 dead transitions. [2024-11-22 13:46:17,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 100 transitions, 991 flow [2024-11-22 13:46:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:17,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-11-22 13:46:17,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4294117647058823 [2024-11-22 13:46:17,554 INFO L175 Difference]: Start difference. First operand has 122 places, 89 transitions, 802 flow. Second operand 5 states and 73 transitions. [2024-11-22 13:46:17,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 100 transitions, 991 flow [2024-11-22 13:46:17,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 100 transitions, 818 flow, removed 25 selfloop flow, removed 23 redundant places. [2024-11-22 13:46:17,567 INFO L231 Difference]: Finished difference. Result has 89 places, 70 transitions, 471 flow [2024-11-22 13:46:17,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=471, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2024-11-22 13:46:17,567 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-11-22 13:46:17,567 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 471 flow [2024-11-22 13:46:17,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:17,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:17,568 INFO L204 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] [2024-11-22 13:46:17,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 13:46:17,568 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:17,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash -102609566, now seen corresponding path program 1 times [2024-11-22 13:46:17,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:17,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360871207] [2024-11-22 13:46:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:17,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:17,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:17,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360871207] [2024-11-22 13:46:17,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360871207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:17,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:17,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:17,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394656405] [2024-11-22 13:46:17,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:17,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:17,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:17,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:17,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:17,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:17,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 471 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:17,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:17,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:17,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:17,761 INFO L124 PetriNetUnfolderBase]: 497/874 cut-off events. [2024-11-22 13:46:17,761 INFO L125 PetriNetUnfolderBase]: For 2059/2059 co-relation queries the response was YES. [2024-11-22 13:46:17,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 874 events. 497/874 cut-off events. For 2059/2059 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3835 event pairs, 329 based on Foata normal form. 12/885 useless extension candidates. Maximal degree in co-relation 3252. Up to 754 conditions per place. [2024-11-22 13:46:17,767 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 52 selfloop transitions, 2 changer transitions 20/75 dead transitions. [2024-11-22 13:46:17,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 75 transitions, 621 flow [2024-11-22 13:46:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:17,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-22 13:46:17,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35294117647058826 [2024-11-22 13:46:17,768 INFO L175 Difference]: Start difference. First operand has 89 places, 70 transitions, 471 flow. Second operand 5 states and 60 transitions. [2024-11-22 13:46:17,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 75 transitions, 621 flow [2024-11-22 13:46:17,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 602 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-22 13:46:17,775 INFO L231 Difference]: Finished difference. Result has 80 places, 55 transitions, 336 flow [2024-11-22 13:46:17,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=80, PETRI_TRANSITIONS=55} [2024-11-22 13:46:17,775 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-11-22 13:46:17,775 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 336 flow [2024-11-22 13:46:17,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:17,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:17,776 INFO L204 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] [2024-11-22 13:46:17,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 13:46:17,776 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:17,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:17,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1880739797, now seen corresponding path program 1 times [2024-11-22 13:46:17,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:17,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667414086] [2024-11-22 13:46:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:17,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:17,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:17,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667414086] [2024-11-22 13:46:17,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667414086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:17,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090255833] [2024-11-22 13:46:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:17,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:17,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:17,873 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:17,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 13:46:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:17,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:46:17,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:18,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:18,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090255833] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:18,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:18,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-11-22 13:46:18,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14247639] [2024-11-22 13:46:18,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:18,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:46:18,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:18,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:46:18,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:46:18,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:18,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 55 transitions, 336 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:18,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:18,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:18,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:18,231 INFO L124 PetriNetUnfolderBase]: 497/843 cut-off events. [2024-11-22 13:46:18,231 INFO L125 PetriNetUnfolderBase]: For 1398/1398 co-relation queries the response was YES. [2024-11-22 13:46:18,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3041 conditions, 843 events. 497/843 cut-off events. For 1398/1398 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3457 event pairs, 231 based on Foata normal form. 36/878 useless extension candidates. Maximal degree in co-relation 3017. Up to 547 conditions per place. [2024-11-22 13:46:18,236 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 67 selfloop transitions, 9 changer transitions 0/77 dead transitions. [2024-11-22 13:46:18,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 77 transitions, 632 flow [2024-11-22 13:46:18,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:46:18,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:46:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2024-11-22 13:46:18,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2689075630252101 [2024-11-22 13:46:18,237 INFO L175 Difference]: Start difference. First operand has 80 places, 55 transitions, 336 flow. Second operand 7 states and 64 transitions. [2024-11-22 13:46:18,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 77 transitions, 632 flow [2024-11-22 13:46:18,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 609 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-11-22 13:46:18,242 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 354 flow [2024-11-22 13:46:18,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-11-22 13:46:18,242 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-11-22 13:46:18,243 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 354 flow [2024-11-22 13:46:18,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:18,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:18,243 INFO L204 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] [2024-11-22 13:46:18,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 13:46:18,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:18,448 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:18,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:18,448 INFO L85 PathProgramCache]: Analyzing trace with hash -304506486, now seen corresponding path program 1 times [2024-11-22 13:46:18,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:18,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389370362] [2024-11-22 13:46:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:18,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:18,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:18,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389370362] [2024-11-22 13:46:18,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389370362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:18,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218617328] [2024-11-22 13:46:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:18,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:18,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:18,606 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:18,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 13:46:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:18,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:46:18,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:18,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:18,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218617328] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:18,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:18,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-22 13:46:18,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358943299] [2024-11-22 13:46:18,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:18,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:46:18,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:46:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:46:18,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:18,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:18,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:18,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:18,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:18,914 INFO L124 PetriNetUnfolderBase]: 364/613 cut-off events. [2024-11-22 13:46:18,914 INFO L125 PetriNetUnfolderBase]: For 1187/1187 co-relation queries the response was YES. [2024-11-22 13:46:18,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2385 conditions, 613 events. 364/613 cut-off events. For 1187/1187 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2210 event pairs, 185 based on Foata normal form. 20/632 useless extension candidates. Maximal degree in co-relation 2365. Up to 434 conditions per place. [2024-11-22 13:46:18,917 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 49 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-11-22 13:46:18,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 62 transitions, 496 flow [2024-11-22 13:46:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:46:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:46:18,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 65 transitions. [2024-11-22 13:46:18,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27310924369747897 [2024-11-22 13:46:18,919 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 354 flow. Second operand 7 states and 65 transitions. [2024-11-22 13:46:18,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 62 transitions, 496 flow [2024-11-22 13:46:18,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 475 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-22 13:46:18,922 INFO L231 Difference]: Finished difference. Result has 63 places, 49 transitions, 320 flow [2024-11-22 13:46:18,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2024-11-22 13:46:18,923 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-11-22 13:46:18,923 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 320 flow [2024-11-22 13:46:18,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:18,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:18,923 INFO L204 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] [2024-11-22 13:46:18,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 13:46:19,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-22 13:46:19,124 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:19,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:19,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1156338135, now seen corresponding path program 1 times [2024-11-22 13:46:19,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:19,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566176684] [2024-11-22 13:46:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:19,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:20,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:20,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566176684] [2024-11-22 13:46:20,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566176684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:20,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612629657] [2024-11-22 13:46:20,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:20,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:20,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:20,208 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:20,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 13:46:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:20,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-22 13:46:20,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:20,771 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-22 13:46:20,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-22 13:46:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:20,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:21,327 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-22 13:46:21,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 82 [2024-11-22 13:46:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:21,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612629657] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:21,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:21,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-11-22 13:46:21,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125158871] [2024-11-22 13:46:21,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:21,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:21,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:21,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:21,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 13:46:21,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:21,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 320 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:21,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:21,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:21,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:22,516 INFO L124 PetriNetUnfolderBase]: 569/967 cut-off events. [2024-11-22 13:46:22,517 INFO L125 PetriNetUnfolderBase]: For 1970/1970 co-relation queries the response was YES. [2024-11-22 13:46:22,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3809 conditions, 967 events. 569/967 cut-off events. For 1970/1970 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4194 event pairs, 97 based on Foata normal form. 1/967 useless extension candidates. Maximal degree in co-relation 3791. Up to 383 conditions per place. [2024-11-22 13:46:22,523 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 101 selfloop transitions, 31 changer transitions 10/143 dead transitions. [2024-11-22 13:46:22,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 143 transitions, 1077 flow [2024-11-22 13:46:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:46:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:46:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 169 transitions. [2024-11-22 13:46:22,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3550420168067227 [2024-11-22 13:46:22,525 INFO L175 Difference]: Start difference. First operand has 63 places, 49 transitions, 320 flow. Second operand 14 states and 169 transitions. [2024-11-22 13:46:22,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 143 transitions, 1077 flow [2024-11-22 13:46:22,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 143 transitions, 1057 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 13:46:22,531 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 586 flow [2024-11-22 13:46:22,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=586, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-11-22 13:46:22,531 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-11-22 13:46:22,531 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 586 flow [2024-11-22 13:46:22,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:22,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:22,532 INFO L204 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] [2024-11-22 13:46:22,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 13:46:22,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:22,737 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:22,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:22,737 INFO L85 PathProgramCache]: Analyzing trace with hash -834199651, now seen corresponding path program 2 times [2024-11-22 13:46:22,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:22,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12807171] [2024-11-22 13:46:22,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:22,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:22,760 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:22,760 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:23,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:23,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12807171] [2024-11-22 13:46:23,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12807171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:23,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:23,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:46:23,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812850225] [2024-11-22 13:46:23,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:23,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:46:23,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:23,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:46:23,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:46:23,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:23,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 586 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:23,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:23,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:23,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:23,554 INFO L124 PetriNetUnfolderBase]: 633/1069 cut-off events. [2024-11-22 13:46:23,554 INFO L125 PetriNetUnfolderBase]: For 5332/5332 co-relation queries the response was YES. [2024-11-22 13:46:23,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5129 conditions, 1069 events. 633/1069 cut-off events. For 5332/5332 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4729 event pairs, 312 based on Foata normal form. 1/1069 useless extension candidates. Maximal degree in co-relation 5101. Up to 785 conditions per place. [2024-11-22 13:46:23,560 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 77 selfloop transitions, 29 changer transitions 17/124 dead transitions. [2024-11-22 13:46:23,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 124 transitions, 1312 flow [2024-11-22 13:46:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:46:23,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:46:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 123 transitions. [2024-11-22 13:46:23,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27828054298642535 [2024-11-22 13:46:23,561 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 586 flow. Second operand 13 states and 123 transitions. [2024-11-22 13:46:23,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 124 transitions, 1312 flow [2024-11-22 13:46:23,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 124 transitions, 1268 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-11-22 13:46:23,574 INFO L231 Difference]: Finished difference. Result has 94 places, 86 transitions, 931 flow [2024-11-22 13:46:23,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=931, PETRI_PLACES=94, PETRI_TRANSITIONS=86} [2024-11-22 13:46:23,574 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-11-22 13:46:23,574 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 86 transitions, 931 flow [2024-11-22 13:46:23,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:23,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:23,575 INFO L204 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] [2024-11-22 13:46:23,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 13:46:23,575 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:23,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash 81051381, now seen corresponding path program 3 times [2024-11-22 13:46:23,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:23,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533063641] [2024-11-22 13:46:23,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:23,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:23,614 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:46:23,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:24,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:24,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533063641] [2024-11-22 13:46:24,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533063641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:24,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:24,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:46:24,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133654632] [2024-11-22 13:46:24,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:24,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:46:24,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:24,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:46:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:46:24,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:24,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 86 transitions, 931 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:24,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:24,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:24,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:24,618 INFO L124 PetriNetUnfolderBase]: 618/1047 cut-off events. [2024-11-22 13:46:24,618 INFO L125 PetriNetUnfolderBase]: For 6145/6145 co-relation queries the response was YES. [2024-11-22 13:46:24,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5359 conditions, 1047 events. 618/1047 cut-off events. For 6145/6145 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4654 event pairs, 238 based on Foata normal form. 1/1048 useless extension candidates. Maximal degree in co-relation 5326. Up to 560 conditions per place. [2024-11-22 13:46:24,624 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 116 selfloop transitions, 27 changer transitions 18/162 dead transitions. [2024-11-22 13:46:24,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 162 transitions, 1785 flow [2024-11-22 13:46:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:46:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:46:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 149 transitions. [2024-11-22 13:46:24,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3130252100840336 [2024-11-22 13:46:24,625 INFO L175 Difference]: Start difference. First operand has 94 places, 86 transitions, 931 flow. Second operand 14 states and 149 transitions. [2024-11-22 13:46:24,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 162 transitions, 1785 flow [2024-11-22 13:46:24,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 162 transitions, 1642 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-11-22 13:46:24,641 INFO L231 Difference]: Finished difference. Result has 103 places, 83 transitions, 876 flow [2024-11-22 13:46:24,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=876, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2024-11-22 13:46:24,642 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-11-22 13:46:24,642 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 876 flow [2024-11-22 13:46:24,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:24,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:24,643 INFO L204 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] [2024-11-22 13:46:24,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 13:46:24,643 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:24,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:24,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1938545821, now seen corresponding path program 4 times [2024-11-22 13:46:24,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:24,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392832818] [2024-11-22 13:46:24,644 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:24,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:24,672 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:24,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:25,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:25,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392832818] [2024-11-22 13:46:25,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392832818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:25,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:25,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:46:25,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903529904] [2024-11-22 13:46:25,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:25,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:25,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:25,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:25,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:46:25,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:25,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 876 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:25,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:25,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:25,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:25,439 INFO L124 PetriNetUnfolderBase]: 613/1045 cut-off events. [2024-11-22 13:46:25,440 INFO L125 PetriNetUnfolderBase]: For 6114/6114 co-relation queries the response was YES. [2024-11-22 13:46:25,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5348 conditions, 1045 events. 613/1045 cut-off events. For 6114/6114 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4641 event pairs, 303 based on Foata normal form. 1/1046 useless extension candidates. Maximal degree in co-relation 5313. Up to 759 conditions per place. [2024-11-22 13:46:25,447 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 78 selfloop transitions, 30 changer transitions 17/126 dead transitions. [2024-11-22 13:46:25,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 126 transitions, 1409 flow [2024-11-22 13:46:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:46:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:46:25,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-11-22 13:46:25,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30392156862745096 [2024-11-22 13:46:25,452 INFO L175 Difference]: Start difference. First operand has 103 places, 83 transitions, 876 flow. Second operand 12 states and 124 transitions. [2024-11-22 13:46:25,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 126 transitions, 1409 flow [2024-11-22 13:46:25,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 126 transitions, 1318 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-11-22 13:46:25,468 INFO L231 Difference]: Finished difference. Result has 107 places, 88 transitions, 967 flow [2024-11-22 13:46:25,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=967, PETRI_PLACES=107, PETRI_TRANSITIONS=88} [2024-11-22 13:46:25,469 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-11-22 13:46:25,470 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 88 transitions, 967 flow [2024-11-22 13:46:25,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:25,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:25,470 INFO L204 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] [2024-11-22 13:46:25,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 13:46:25,470 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:25,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1140190331, now seen corresponding path program 5 times [2024-11-22 13:46:25,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:25,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280051200] [2024-11-22 13:46:25,471 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:25,497 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:25,497 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:26,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280051200] [2024-11-22 13:46:26,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280051200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:26,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169123204] [2024-11-22 13:46:26,359 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:26,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:26,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:26,361 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:26,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 13:46:26,440 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:26,441 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:26,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-22 13:46:26,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:26,893 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 13:46:26,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-11-22 13:46:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:26,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:27,432 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-22 13:46:27,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-11-22 13:46:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:27,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169123204] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:27,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:27,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-11-22 13:46:27,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736089795] [2024-11-22 13:46:27,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:27,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:27,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:27,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:27,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 13:46:27,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:27,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 88 transitions, 967 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:27,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:27,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:27,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:28,269 INFO L124 PetriNetUnfolderBase]: 610/1043 cut-off events. [2024-11-22 13:46:28,270 INFO L125 PetriNetUnfolderBase]: For 6407/6407 co-relation queries the response was YES. [2024-11-22 13:46:28,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5331 conditions, 1043 events. 610/1043 cut-off events. For 6407/6407 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4617 event pairs, 109 based on Foata normal form. 1/1043 useless extension candidates. Maximal degree in co-relation 5292. Up to 607 conditions per place. [2024-11-22 13:46:28,276 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 91 selfloop transitions, 43 changer transitions 7/142 dead transitions. [2024-11-22 13:46:28,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 142 transitions, 1556 flow [2024-11-22 13:46:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:46:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:46:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 155 transitions. [2024-11-22 13:46:28,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32563025210084034 [2024-11-22 13:46:28,278 INFO L175 Difference]: Start difference. First operand has 107 places, 88 transitions, 967 flow. Second operand 14 states and 155 transitions. [2024-11-22 13:46:28,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 142 transitions, 1556 flow [2024-11-22 13:46:28,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 142 transitions, 1494 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-11-22 13:46:28,293 INFO L231 Difference]: Finished difference. Result has 114 places, 91 transitions, 1040 flow [2024-11-22 13:46:28,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1040, PETRI_PLACES=114, PETRI_TRANSITIONS=91} [2024-11-22 13:46:28,293 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-11-22 13:46:28,293 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 91 transitions, 1040 flow [2024-11-22 13:46:28,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:28,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:28,294 INFO L204 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] [2024-11-22 13:46:28,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 13:46:28,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-22 13:46:28,499 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:28,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:28,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2119440933, now seen corresponding path program 6 times [2024-11-22 13:46:28,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:28,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975391440] [2024-11-22 13:46:28,499 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:46:28,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:28,519 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:46:28,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:28,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:28,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975391440] [2024-11-22 13:46:28,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975391440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:28,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:28,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:46:28,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208914594] [2024-11-22 13:46:28,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:29,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:46:29,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:29,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:46:29,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:46:29,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:29,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 91 transitions, 1040 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:29,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:29,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:29,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:29,402 INFO L124 PetriNetUnfolderBase]: 600/1029 cut-off events. [2024-11-22 13:46:29,402 INFO L125 PetriNetUnfolderBase]: For 5959/5959 co-relation queries the response was YES. [2024-11-22 13:46:29,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5265 conditions, 1029 events. 600/1029 cut-off events. For 5959/5959 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4585 event pairs, 319 based on Foata normal form. 1/1029 useless extension candidates. Maximal degree in co-relation 5226. Up to 777 conditions per place. [2024-11-22 13:46:29,410 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 78 selfloop transitions, 28 changer transitions 9/116 dead transitions. [2024-11-22 13:46:29,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 116 transitions, 1371 flow [2024-11-22 13:46:29,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:46:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 13:46:29,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-11-22 13:46:29,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28609625668449196 [2024-11-22 13:46:29,411 INFO L175 Difference]: Start difference. First operand has 114 places, 91 transitions, 1040 flow. Second operand 11 states and 107 transitions. [2024-11-22 13:46:29,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 116 transitions, 1371 flow [2024-11-22 13:46:29,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 116 transitions, 1266 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-22 13:46:29,424 INFO L231 Difference]: Finished difference. Result has 116 places, 88 transitions, 945 flow [2024-11-22 13:46:29,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=945, PETRI_PLACES=116, PETRI_TRANSITIONS=88} [2024-11-22 13:46:29,425 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-11-22 13:46:29,425 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 88 transitions, 945 flow [2024-11-22 13:46:29,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:29,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:29,425 INFO L204 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] [2024-11-22 13:46:29,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 13:46:29,425 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:29,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:29,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1883086819, now seen corresponding path program 7 times [2024-11-22 13:46:29,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:29,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737083405] [2024-11-22 13:46:29,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:46:29,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:30,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:30,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737083405] [2024-11-22 13:46:30,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737083405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:30,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220722517] [2024-11-22 13:46:30,107 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:46:30,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:30,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:30,108 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:30,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 13:46:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:30,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-22 13:46:30,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:30,470 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-22 13:46:30,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-22 13:46:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:30,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:31,109 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-22 13:46:31,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-11-22 13:46:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:31,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220722517] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:31,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:31,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-11-22 13:46:31,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955775904] [2024-11-22 13:46:31,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:31,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:31,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:31,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:31,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 13:46:31,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:31,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 88 transitions, 945 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:31,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:31,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:31,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:32,261 INFO L124 PetriNetUnfolderBase]: 791/1343 cut-off events. [2024-11-22 13:46:32,261 INFO L125 PetriNetUnfolderBase]: For 8995/8995 co-relation queries the response was YES. [2024-11-22 13:46:32,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7070 conditions, 1343 events. 791/1343 cut-off events. For 8995/8995 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6235 event pairs, 113 based on Foata normal form. 1/1344 useless extension candidates. Maximal degree in co-relation 7033. Up to 647 conditions per place. [2024-11-22 13:46:32,270 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 120 selfloop transitions, 73 changer transitions 10/204 dead transitions. [2024-11-22 13:46:32,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 204 transitions, 2348 flow [2024-11-22 13:46:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 13:46:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-22 13:46:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 185 transitions. [2024-11-22 13:46:32,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32006920415224915 [2024-11-22 13:46:32,272 INFO L175 Difference]: Start difference. First operand has 116 places, 88 transitions, 945 flow. Second operand 17 states and 185 transitions. [2024-11-22 13:46:32,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 204 transitions, 2348 flow [2024-11-22 13:46:32,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 204 transitions, 2260 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-22 13:46:32,294 INFO L231 Difference]: Finished difference. Result has 128 places, 127 transitions, 1686 flow [2024-11-22 13:46:32,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1686, PETRI_PLACES=128, PETRI_TRANSITIONS=127} [2024-11-22 13:46:32,297 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-11-22 13:46:32,297 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 127 transitions, 1686 flow [2024-11-22 13:46:32,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:32,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:32,298 INFO L204 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] [2024-11-22 13:46:32,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 13:46:32,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-22 13:46:32,498 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:32,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1290074223, now seen corresponding path program 8 times [2024-11-22 13:46:32,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:32,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577883911] [2024-11-22 13:46:32,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:32,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:32,517 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:32,518 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:32,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:32,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577883911] [2024-11-22 13:46:32,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577883911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:32,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:32,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:46:32,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047785474] [2024-11-22 13:46:32,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:32,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:46:32,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:32,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:46:32,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:46:32,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:32,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 127 transitions, 1686 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:32,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:32,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:32,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:33,369 INFO L124 PetriNetUnfolderBase]: 812/1382 cut-off events. [2024-11-22 13:46:33,369 INFO L125 PetriNetUnfolderBase]: For 12013/12013 co-relation queries the response was YES. [2024-11-22 13:46:33,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7999 conditions, 1382 events. 812/1382 cut-off events. For 12013/12013 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6478 event pairs, 317 based on Foata normal form. 1/1382 useless extension candidates. Maximal degree in co-relation 7954. Up to 910 conditions per place. [2024-11-22 13:46:33,377 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 112 selfloop transitions, 50 changer transitions 17/180 dead transitions. [2024-11-22 13:46:33,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 180 transitions, 2549 flow [2024-11-22 13:46:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:46:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:46:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-11-22 13:46:33,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2828054298642534 [2024-11-22 13:46:33,379 INFO L175 Difference]: Start difference. First operand has 128 places, 127 transitions, 1686 flow. Second operand 13 states and 125 transitions. [2024-11-22 13:46:33,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 180 transitions, 2549 flow [2024-11-22 13:46:33,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 180 transitions, 2387 flow, removed 81 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:33,405 INFO L231 Difference]: Finished difference. Result has 143 places, 139 transitions, 1939 flow [2024-11-22 13:46:33,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1939, PETRI_PLACES=143, PETRI_TRANSITIONS=139} [2024-11-22 13:46:33,406 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-11-22 13:46:33,406 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 139 transitions, 1939 flow [2024-11-22 13:46:33,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:33,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:33,406 INFO L204 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] [2024-11-22 13:46:33,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-22 13:46:33,407 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:33,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:33,407 INFO L85 PathProgramCache]: Analyzing trace with hash 342919245, now seen corresponding path program 9 times [2024-11-22 13:46:33,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:33,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354072248] [2024-11-22 13:46:33,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:33,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:33,426 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:46:33,426 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:33,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354072248] [2024-11-22 13:46:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354072248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:33,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:33,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:46:33,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336818039] [2024-11-22 13:46:33,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:33,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:46:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:33,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:46:33,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:46:33,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:33,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 139 transitions, 1939 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:33,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:33,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:33,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:34,224 INFO L124 PetriNetUnfolderBase]: 826/1408 cut-off events. [2024-11-22 13:46:34,224 INFO L125 PetriNetUnfolderBase]: For 12991/12991 co-relation queries the response was YES. [2024-11-22 13:46:34,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8255 conditions, 1408 events. 826/1408 cut-off events. For 12991/12991 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6670 event pairs, 318 based on Foata normal form. 1/1409 useless extension candidates. Maximal degree in co-relation 8204. Up to 935 conditions per place. [2024-11-22 13:46:34,237 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 124 selfloop transitions, 55 changer transitions 10/190 dead transitions. [2024-11-22 13:46:34,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 190 transitions, 2685 flow [2024-11-22 13:46:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:46:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:46:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-11-22 13:46:34,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2850678733031674 [2024-11-22 13:46:34,238 INFO L175 Difference]: Start difference. First operand has 143 places, 139 transitions, 1939 flow. Second operand 13 states and 126 transitions. [2024-11-22 13:46:34,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 190 transitions, 2685 flow [2024-11-22 13:46:34,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 190 transitions, 2541 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-11-22 13:46:34,281 INFO L231 Difference]: Finished difference. Result has 151 places, 145 transitions, 2030 flow [2024-11-22 13:46:34,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2030, PETRI_PLACES=151, PETRI_TRANSITIONS=145} [2024-11-22 13:46:34,282 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-11-22 13:46:34,282 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 145 transitions, 2030 flow [2024-11-22 13:46:34,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:34,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:34,282 INFO L204 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] [2024-11-22 13:46:34,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-22 13:46:34,283 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:34,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:34,283 INFO L85 PathProgramCache]: Analyzing trace with hash 14373931, now seen corresponding path program 10 times [2024-11-22 13:46:34,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:34,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112121042] [2024-11-22 13:46:34,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:34,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:34,306 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:34,306 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:34,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:34,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112121042] [2024-11-22 13:46:34,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112121042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:34,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:34,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:46:34,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350540651] [2024-11-22 13:46:34,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:34,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:34,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:34,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:46:34,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:34,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 145 transitions, 2030 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:34,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:34,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:34,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:35,388 INFO L124 PetriNetUnfolderBase]: 879/1532 cut-off events. [2024-11-22 13:46:35,388 INFO L125 PetriNetUnfolderBase]: For 13043/13043 co-relation queries the response was YES. [2024-11-22 13:46:35,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8748 conditions, 1532 events. 879/1532 cut-off events. For 13043/13043 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7604 event pairs, 296 based on Foata normal form. 1/1533 useless extension candidates. Maximal degree in co-relation 8695. Up to 802 conditions per place. [2024-11-22 13:46:35,397 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 139 selfloop transitions, 53 changer transitions 17/210 dead transitions. [2024-11-22 13:46:35,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 210 transitions, 2862 flow [2024-11-22 13:46:35,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:46:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:46:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-11-22 13:46:35,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33578431372549017 [2024-11-22 13:46:35,398 INFO L175 Difference]: Start difference. First operand has 151 places, 145 transitions, 2030 flow. Second operand 12 states and 137 transitions. [2024-11-22 13:46:35,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 210 transitions, 2862 flow [2024-11-22 13:46:35,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 210 transitions, 2797 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-22 13:46:35,429 INFO L231 Difference]: Finished difference. Result has 160 places, 145 transitions, 2158 flow [2024-11-22 13:46:35,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1969, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2158, PETRI_PLACES=160, PETRI_TRANSITIONS=145} [2024-11-22 13:46:35,429 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-11-22 13:46:35,429 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 145 transitions, 2158 flow [2024-11-22 13:46:35,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:35,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:35,430 INFO L204 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] [2024-11-22 13:46:35,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-22 13:46:35,430 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:35,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:35,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1487098863, now seen corresponding path program 11 times [2024-11-22 13:46:35,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:35,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314643135] [2024-11-22 13:46:35,430 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:35,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:35,455 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:35,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:36,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:36,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314643135] [2024-11-22 13:46:36,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314643135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:36,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393265005] [2024-11-22 13:46:36,167 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:36,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:36,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:36,168 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:36,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 13:46:36,245 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:36,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:36,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-22 13:46:36,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:36,530 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-22 13:46:36,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-22 13:46:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:36,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:37,145 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-22 13:46:37,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-11-22 13:46:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:37,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393265005] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:37,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:37,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 31 [2024-11-22 13:46:37,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211475628] [2024-11-22 13:46:37,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:37,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:37,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:37,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:37,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2024-11-22 13:46:37,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:37,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 145 transitions, 2158 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:37,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:37,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:37,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:38,164 INFO L124 PetriNetUnfolderBase]: 861/1503 cut-off events. [2024-11-22 13:46:38,164 INFO L125 PetriNetUnfolderBase]: For 14195/14195 co-relation queries the response was YES. [2024-11-22 13:46:38,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8789 conditions, 1503 events. 861/1503 cut-off events. For 14195/14195 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7446 event pairs, 150 based on Foata normal form. 1/1503 useless extension candidates. Maximal degree in co-relation 8732. Up to 834 conditions per place. [2024-11-22 13:46:38,179 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 111 selfloop transitions, 74 changer transitions 12/198 dead transitions. [2024-11-22 13:46:38,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 198 transitions, 2778 flow [2024-11-22 13:46:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:46:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:46:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 159 transitions. [2024-11-22 13:46:38,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33403361344537813 [2024-11-22 13:46:38,181 INFO L175 Difference]: Start difference. First operand has 160 places, 145 transitions, 2158 flow. Second operand 14 states and 159 transitions. [2024-11-22 13:46:38,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 198 transitions, 2778 flow [2024-11-22 13:46:38,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 198 transitions, 2709 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-22 13:46:38,230 INFO L231 Difference]: Finished difference. Result has 164 places, 142 transitions, 2186 flow [2024-11-22 13:46:38,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2186, PETRI_PLACES=164, PETRI_TRANSITIONS=142} [2024-11-22 13:46:38,231 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-11-22 13:46:38,231 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 142 transitions, 2186 flow [2024-11-22 13:46:38,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:38,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:38,231 INFO L204 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] [2024-11-22 13:46:38,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 13:46:38,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-22 13:46:38,432 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:38,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash -111430679, now seen corresponding path program 12 times [2024-11-22 13:46:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:38,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602101865] [2024-11-22 13:46:38,433 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:46:38,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:38,444 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:46:38,444 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:38,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:38,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602101865] [2024-11-22 13:46:38,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602101865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:38,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:38,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:46:38,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93343604] [2024-11-22 13:46:38,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:38,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:46:38,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:38,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:46:38,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:46:38,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:38,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 142 transitions, 2186 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:38,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:38,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:38,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:39,280 INFO L124 PetriNetUnfolderBase]: 853/1486 cut-off events. [2024-11-22 13:46:39,280 INFO L125 PetriNetUnfolderBase]: For 14012/14012 co-relation queries the response was YES. [2024-11-22 13:46:39,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8765 conditions, 1486 events. 853/1486 cut-off events. For 14012/14012 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7279 event pairs, 368 based on Foata normal form. 2/1487 useless extension candidates. Maximal degree in co-relation 8711. Up to 1029 conditions per place. [2024-11-22 13:46:39,290 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 116 selfloop transitions, 57 changer transitions 11/185 dead transitions. [2024-11-22 13:46:39,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 185 transitions, 2944 flow [2024-11-22 13:46:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:46:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:46:39,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-11-22 13:46:39,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28431372549019607 [2024-11-22 13:46:39,292 INFO L175 Difference]: Start difference. First operand has 164 places, 142 transitions, 2186 flow. Second operand 12 states and 116 transitions. [2024-11-22 13:46:39,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 185 transitions, 2944 flow [2024-11-22 13:46:39,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 185 transitions, 2774 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-11-22 13:46:39,331 INFO L231 Difference]: Finished difference. Result has 162 places, 147 transitions, 2258 flow [2024-11-22 13:46:39,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2258, PETRI_PLACES=162, PETRI_TRANSITIONS=147} [2024-11-22 13:46:39,332 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-11-22 13:46:39,332 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 147 transitions, 2258 flow [2024-11-22 13:46:39,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:39,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:39,332 INFO L204 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] [2024-11-22 13:46:39,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-22 13:46:39,332 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:39,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:39,333 INFO L85 PathProgramCache]: Analyzing trace with hash 659047303, now seen corresponding path program 13 times [2024-11-22 13:46:39,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:39,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290389864] [2024-11-22 13:46:39,333 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:46:39,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:39,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:39,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290389864] [2024-11-22 13:46:39,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290389864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:39,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072560906] [2024-11-22 13:46:39,999 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:46:39,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:39,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:40,000 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:40,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 13:46:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:40,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-22 13:46:40,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:40,310 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-22 13:46:40,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-22 13:46:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:40,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:40,862 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-22 13:46:40,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-11-22 13:46:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:40,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072560906] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:40,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:40,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-11-22 13:46:40,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270426624] [2024-11-22 13:46:40,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:40,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:40,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:40,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:40,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 13:46:40,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:40,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 147 transitions, 2258 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:40,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:40,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:40,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:41,751 INFO L124 PetriNetUnfolderBase]: 821/1420 cut-off events. [2024-11-22 13:46:41,751 INFO L125 PetriNetUnfolderBase]: For 12312/12312 co-relation queries the response was YES. [2024-11-22 13:46:41,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8500 conditions, 1420 events. 821/1420 cut-off events. For 12312/12312 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6834 event pairs, 138 based on Foata normal form. 1/1421 useless extension candidates. Maximal degree in co-relation 8443. Up to 802 conditions per place. [2024-11-22 13:46:41,760 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 112 selfloop transitions, 76 changer transitions 11/200 dead transitions. [2024-11-22 13:46:41,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 200 transitions, 2902 flow [2024-11-22 13:46:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:46:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:46:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 153 transitions. [2024-11-22 13:46:41,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-11-22 13:46:41,761 INFO L175 Difference]: Start difference. First operand has 162 places, 147 transitions, 2258 flow. Second operand 14 states and 153 transitions. [2024-11-22 13:46:41,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 200 transitions, 2902 flow [2024-11-22 13:46:41,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 200 transitions, 2804 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-11-22 13:46:41,787 INFO L231 Difference]: Finished difference. Result has 167 places, 144 transitions, 2263 flow [2024-11-22 13:46:41,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2263, PETRI_PLACES=167, PETRI_TRANSITIONS=144} [2024-11-22 13:46:41,788 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-11-22 13:46:41,788 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 144 transitions, 2263 flow [2024-11-22 13:46:41,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:41,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:41,788 INFO L204 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] [2024-11-22 13:46:41,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 13:46:41,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-22 13:46:41,989 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:41,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:41,989 INFO L85 PathProgramCache]: Analyzing trace with hash -771391655, now seen corresponding path program 14 times [2024-11-22 13:46:41,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:41,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337800752] [2024-11-22 13:46:41,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:41,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:42,000 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:42,001 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:42,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:42,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337800752] [2024-11-22 13:46:42,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337800752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:42,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:42,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:46:42,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657440756] [2024-11-22 13:46:42,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:42,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:46:42,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:42,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:46:42,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:46:42,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:42,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 144 transitions, 2263 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:42,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:42,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:42,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:42,812 INFO L124 PetriNetUnfolderBase]: 829/1435 cut-off events. [2024-11-22 13:46:42,812 INFO L125 PetriNetUnfolderBase]: For 12257/12257 co-relation queries the response was YES. [2024-11-22 13:46:42,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8703 conditions, 1435 events. 829/1435 cut-off events. For 12257/12257 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6903 event pairs, 380 based on Foata normal form. 1/1435 useless extension candidates. Maximal degree in co-relation 8648. Up to 1021 conditions per place. [2024-11-22 13:46:42,822 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 113 selfloop transitions, 54 changer transitions 9/177 dead transitions. [2024-11-22 13:46:42,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 177 transitions, 2840 flow [2024-11-22 13:46:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:46:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 13:46:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-11-22 13:46:42,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2914438502673797 [2024-11-22 13:46:42,823 INFO L175 Difference]: Start difference. First operand has 167 places, 144 transitions, 2263 flow. Second operand 11 states and 109 transitions. [2024-11-22 13:46:42,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 177 transitions, 2840 flow [2024-11-22 13:46:42,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 177 transitions, 2670 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-11-22 13:46:42,850 INFO L231 Difference]: Finished difference. Result has 160 places, 147 transitions, 2264 flow [2024-11-22 13:46:42,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2264, PETRI_PLACES=160, PETRI_TRANSITIONS=147} [2024-11-22 13:46:42,851 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-11-22 13:46:42,851 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 147 transitions, 2264 flow [2024-11-22 13:46:42,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:42,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:42,851 INFO L204 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] [2024-11-22 13:46:42,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-22 13:46:42,851 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:42,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:42,851 INFO L85 PathProgramCache]: Analyzing trace with hash 241300877, now seen corresponding path program 15 times [2024-11-22 13:46:42,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:42,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74186589] [2024-11-22 13:46:42,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:42,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:42,865 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:46:42,865 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:43,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:43,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:43,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74186589] [2024-11-22 13:46:43,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74186589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:43,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:43,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:46:43,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839211099] [2024-11-22 13:46:43,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:43,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:46:43,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:43,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:46:43,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:46:43,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:43,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 147 transitions, 2264 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:43,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:43,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:43,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:43,654 INFO L124 PetriNetUnfolderBase]: 817/1404 cut-off events. [2024-11-22 13:46:43,654 INFO L125 PetriNetUnfolderBase]: For 12251/12251 co-relation queries the response was YES. [2024-11-22 13:46:43,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8426 conditions, 1404 events. 817/1404 cut-off events. For 12251/12251 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6661 event pairs, 365 based on Foata normal form. 1/1405 useless extension candidates. Maximal degree in co-relation 8371. Up to 994 conditions per place. [2024-11-22 13:46:43,664 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 112 selfloop transitions, 55 changer transitions 9/177 dead transitions. [2024-11-22 13:46:43,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 177 transitions, 2753 flow [2024-11-22 13:46:43,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:46:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:46:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-11-22 13:46:43,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27450980392156865 [2024-11-22 13:46:43,665 INFO L175 Difference]: Start difference. First operand has 160 places, 147 transitions, 2264 flow. Second operand 12 states and 112 transitions. [2024-11-22 13:46:43,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 177 transitions, 2753 flow [2024-11-22 13:46:43,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 177 transitions, 2691 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-22 13:46:43,693 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 2287 flow [2024-11-22 13:46:43,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2202, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2287, PETRI_PLACES=166, PETRI_TRANSITIONS=145} [2024-11-22 13:46:43,694 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-11-22 13:46:43,694 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 2287 flow [2024-11-22 13:46:43,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:43,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:43,694 INFO L204 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] [2024-11-22 13:46:43,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-22 13:46:43,695 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:43,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash -205059009, now seen corresponding path program 1 times [2024-11-22 13:46:43,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:43,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482889610] [2024-11-22 13:46:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:43,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:43,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:43,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482889610] [2024-11-22 13:46:43,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482889610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:43,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736476297] [2024-11-22 13:46:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:43,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:43,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:43,944 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:43,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 13:46:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:44,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 13:46:44,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:44,073 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-22 13:46:44,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-22 13:46:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:44,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:44,137 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-22 13:46:44,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-22 13:46:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:44,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736476297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:46:44,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:46:44,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-22 13:46:44,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682541745] [2024-11-22 13:46:44,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:46:44,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:46:44,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:44,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:46:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:46:44,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:44,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 145 transitions, 2287 flow. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:44,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:44,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:44,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:44,578 INFO L124 PetriNetUnfolderBase]: 857/1463 cut-off events. [2024-11-22 13:46:44,578 INFO L125 PetriNetUnfolderBase]: For 15322/15322 co-relation queries the response was YES. [2024-11-22 13:46:44,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9028 conditions, 1463 events. 857/1463 cut-off events. For 15322/15322 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7153 event pairs, 160 based on Foata normal form. 18/1481 useless extension candidates. Maximal degree in co-relation 8972. Up to 682 conditions per place. [2024-11-22 13:46:44,588 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 167 selfloop transitions, 50 changer transitions 0/218 dead transitions. [2024-11-22 13:46:44,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 218 transitions, 3437 flow [2024-11-22 13:46:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:46:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:46:44,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-11-22 13:46:44,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-11-22 13:46:44,589 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 2287 flow. Second operand 10 states and 119 transitions. [2024-11-22 13:46:44,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 218 transitions, 3437 flow [2024-11-22 13:46:44,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 218 transitions, 3260 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-11-22 13:46:44,617 INFO L231 Difference]: Finished difference. Result has 163 places, 149 transitions, 2324 flow [2024-11-22 13:46:44,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2324, PETRI_PLACES=163, PETRI_TRANSITIONS=149} [2024-11-22 13:46:44,617 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-11-22 13:46:44,617 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 149 transitions, 2324 flow [2024-11-22 13:46:44,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:44,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:44,618 INFO L204 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] [2024-11-22 13:46:44,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-22 13:46:44,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:44,818 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:44,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:44,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1203116737, now seen corresponding path program 1 times [2024-11-22 13:46:44,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:44,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589582748] [2024-11-22 13:46:44,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:44,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:45,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:45,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:45,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589582748] [2024-11-22 13:46:45,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589582748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:45,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:45,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:46:45,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538782033] [2024-11-22 13:46:45,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:45,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:46:45,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:45,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:46:45,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:46:45,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:45,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 149 transitions, 2324 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:45,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:45,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:45,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:45,342 INFO L124 PetriNetUnfolderBase]: 949/1603 cut-off events. [2024-11-22 13:46:45,342 INFO L125 PetriNetUnfolderBase]: For 16181/16181 co-relation queries the response was YES. [2024-11-22 13:46:45,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10184 conditions, 1603 events. 949/1603 cut-off events. For 16181/16181 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7856 event pairs, 414 based on Foata normal form. 12/1615 useless extension candidates. Maximal degree in co-relation 10128. Up to 1171 conditions per place. [2024-11-22 13:46:45,352 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 137 selfloop transitions, 51 changer transitions 0/189 dead transitions. [2024-11-22 13:46:45,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 189 transitions, 3112 flow [2024-11-22 13:46:45,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:46:45,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:46:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-11-22 13:46:45,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33986928104575165 [2024-11-22 13:46:45,353 INFO L175 Difference]: Start difference. First operand has 163 places, 149 transitions, 2324 flow. Second operand 9 states and 104 transitions. [2024-11-22 13:46:45,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 189 transitions, 3112 flow [2024-11-22 13:46:45,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 189 transitions, 2949 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-11-22 13:46:45,387 INFO L231 Difference]: Finished difference. Result has 165 places, 155 transitions, 2404 flow [2024-11-22 13:46:45,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2404, PETRI_PLACES=165, PETRI_TRANSITIONS=155} [2024-11-22 13:46:45,387 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-11-22 13:46:45,387 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 155 transitions, 2404 flow [2024-11-22 13:46:45,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:45,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:45,388 INFO L204 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] [2024-11-22 13:46:45,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-22 13:46:45,388 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:45,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:45,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1513104541, now seen corresponding path program 2 times [2024-11-22 13:46:45,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:45,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977450319] [2024-11-22 13:46:45,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:45,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:45,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:45,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:45,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:45,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977450319] [2024-11-22 13:46:45,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977450319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:45,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:45,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:46:45,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647717970] [2024-11-22 13:46:45,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:45,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:46:45,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:45,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:46:45,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:46:45,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:45,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 155 transitions, 2404 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:45,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:45,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:45,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:45,957 INFO L124 PetriNetUnfolderBase]: 932/1586 cut-off events. [2024-11-22 13:46:45,958 INFO L125 PetriNetUnfolderBase]: For 14467/14467 co-relation queries the response was YES. [2024-11-22 13:46:45,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9790 conditions, 1586 events. 932/1586 cut-off events. For 14467/14467 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7899 event pairs, 324 based on Foata normal form. 17/1603 useless extension candidates. Maximal degree in co-relation 9735. Up to 910 conditions per place. [2024-11-22 13:46:45,969 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 142 selfloop transitions, 47 changer transitions 21/211 dead transitions. [2024-11-22 13:46:45,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 211 transitions, 3193 flow [2024-11-22 13:46:45,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:46:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:46:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-11-22 13:46:45,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31862745098039214 [2024-11-22 13:46:45,970 INFO L175 Difference]: Start difference. First operand has 165 places, 155 transitions, 2404 flow. Second operand 12 states and 130 transitions. [2024-11-22 13:46:45,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 211 transitions, 3193 flow [2024-11-22 13:46:46,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 211 transitions, 3103 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-22 13:46:46,035 INFO L231 Difference]: Finished difference. Result has 172 places, 145 transitions, 2254 flow [2024-11-22 13:46:46,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2254, PETRI_PLACES=172, PETRI_TRANSITIONS=145} [2024-11-22 13:46:46,036 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-11-22 13:46:46,036 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 145 transitions, 2254 flow [2024-11-22 13:46:46,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:46,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:46,036 INFO L204 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] [2024-11-22 13:46:46,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-22 13:46:46,036 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:46,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:46,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1644889591, now seen corresponding path program 3 times [2024-11-22 13:46:46,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:46,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110303277] [2024-11-22 13:46:46,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:46,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:46,049 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:46:46,049 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:46,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:46,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110303277] [2024-11-22 13:46:46,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110303277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:46,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025743982] [2024-11-22 13:46:46,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:46,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:46,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:46,263 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:46,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 13:46:46,336 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:46:46,336 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:46,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 13:46:46,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:46,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:46:46,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-22 13:46:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:46,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:46,485 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-22 13:46:46,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-22 13:46:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:46,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025743982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:46:46,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:46:46,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-11-22 13:46:46,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734637672] [2024-11-22 13:46:46,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:46:46,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:46:46,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:46,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:46:46,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:46:46,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:46,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 145 transitions, 2254 flow. Second operand has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:46,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:46,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:46,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:47,086 INFO L124 PetriNetUnfolderBase]: 1081/1820 cut-off events. [2024-11-22 13:46:47,087 INFO L125 PetriNetUnfolderBase]: For 19715/19715 co-relation queries the response was YES. [2024-11-22 13:46:47,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11499 conditions, 1820 events. 1081/1820 cut-off events. For 19715/19715 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9207 event pairs, 403 based on Foata normal form. 20/1840 useless extension candidates. Maximal degree in co-relation 11443. Up to 1158 conditions per place. [2024-11-22 13:46:47,101 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 154 selfloop transitions, 69 changer transitions 0/224 dead transitions. [2024-11-22 13:46:47,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 224 transitions, 3524 flow [2024-11-22 13:46:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 13:46:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-22 13:46:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 162 transitions. [2024-11-22 13:46:47,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2977941176470588 [2024-11-22 13:46:47,102 INFO L175 Difference]: Start difference. First operand has 172 places, 145 transitions, 2254 flow. Second operand 16 states and 162 transitions. [2024-11-22 13:46:47,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 224 transitions, 3524 flow [2024-11-22 13:46:47,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 224 transitions, 3318 flow, removed 24 selfloop flow, removed 16 redundant places. [2024-11-22 13:46:47,142 INFO L231 Difference]: Finished difference. Result has 170 places, 168 transitions, 2698 flow [2024-11-22 13:46:47,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2698, PETRI_PLACES=170, PETRI_TRANSITIONS=168} [2024-11-22 13:46:47,142 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-11-22 13:46:47,142 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 168 transitions, 2698 flow [2024-11-22 13:46:47,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:47,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:47,143 INFO L204 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] [2024-11-22 13:46:47,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-22 13:46:47,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:47,343 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:47,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:47,344 INFO L85 PathProgramCache]: Analyzing trace with hash -2134442235, now seen corresponding path program 2 times [2024-11-22 13:46:47,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:47,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668230776] [2024-11-22 13:46:47,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:47,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:47,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:47,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:47,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:47,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668230776] [2024-11-22 13:46:47,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668230776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:47,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401604127] [2024-11-22 13:46:47,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:47,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:47,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:47,595 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:47,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 13:46:47,668 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:47,668 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:47,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 13:46:47,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:47,764 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-22 13:46:47,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-22 13:46:47,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:47,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:47,842 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-22 13:46:47,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-22 13:46:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:47,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401604127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:46:47,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:46:47,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-11-22 13:46:47,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485875399] [2024-11-22 13:46:47,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:46:47,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:46:47,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:46:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:46:47,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:47,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 168 transitions, 2698 flow. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:47,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:47,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:47,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:48,477 INFO L124 PetriNetUnfolderBase]: 1534/2578 cut-off events. [2024-11-22 13:46:48,477 INFO L125 PetriNetUnfolderBase]: For 24560/24560 co-relation queries the response was YES. [2024-11-22 13:46:48,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16061 conditions, 2578 events. 1534/2578 cut-off events. For 24560/24560 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13941 event pairs, 454 based on Foata normal form. 18/2596 useless extension candidates. Maximal degree in co-relation 16005. Up to 1191 conditions per place. [2024-11-22 13:46:48,494 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 205 selfloop transitions, 88 changer transitions 0/294 dead transitions. [2024-11-22 13:46:48,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 294 transitions, 4722 flow [2024-11-22 13:46:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:46:48,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:46:48,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-11-22 13:46:48,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3627450980392157 [2024-11-22 13:46:48,495 INFO L175 Difference]: Start difference. First operand has 170 places, 168 transitions, 2698 flow. Second operand 12 states and 148 transitions. [2024-11-22 13:46:48,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 294 transitions, 4722 flow [2024-11-22 13:46:48,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 294 transitions, 4626 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-22 13:46:48,543 INFO L231 Difference]: Finished difference. Result has 182 places, 192 transitions, 3329 flow [2024-11-22 13:46:48,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3329, PETRI_PLACES=182, PETRI_TRANSITIONS=192} [2024-11-22 13:46:48,543 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-11-22 13:46:48,543 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 192 transitions, 3329 flow [2024-11-22 13:46:48,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:48,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:48,544 INFO L204 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] [2024-11-22 13:46:48,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-22 13:46:48,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:48,744 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:48,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:48,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1042229925, now seen corresponding path program 4 times [2024-11-22 13:46:48,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:48,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134416301] [2024-11-22 13:46:48,745 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:48,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:48,753 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:48,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:48,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134416301] [2024-11-22 13:46:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134416301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:48,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:48,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:46:48,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945553513] [2024-11-22 13:46:48,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:48,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:46:48,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:46:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:46:48,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:48,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 192 transitions, 3329 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:48,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:48,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:48,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:49,166 INFO L124 PetriNetUnfolderBase]: 1566/2630 cut-off events. [2024-11-22 13:46:49,166 INFO L125 PetriNetUnfolderBase]: For 32537/32537 co-relation queries the response was YES. [2024-11-22 13:46:49,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17378 conditions, 2630 events. 1566/2630 cut-off events. For 32537/32537 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14219 event pairs, 685 based on Foata normal form. 20/2650 useless extension candidates. Maximal degree in co-relation 17316. Up to 2023 conditions per place. [2024-11-22 13:46:49,188 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 147 selfloop transitions, 74 changer transitions 0/222 dead transitions. [2024-11-22 13:46:49,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 222 transitions, 4116 flow [2024-11-22 13:46:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:46:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:46:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-11-22 13:46:49,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3949579831932773 [2024-11-22 13:46:49,190 INFO L175 Difference]: Start difference. First operand has 182 places, 192 transitions, 3329 flow. Second operand 7 states and 94 transitions. [2024-11-22 13:46:49,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 222 transitions, 4116 flow [2024-11-22 13:46:49,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 222 transitions, 3913 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-11-22 13:46:49,260 INFO L231 Difference]: Finished difference. Result has 185 places, 201 transitions, 3532 flow [2024-11-22 13:46:49,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3137, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3532, PETRI_PLACES=185, PETRI_TRANSITIONS=201} [2024-11-22 13:46:49,261 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-11-22 13:46:49,261 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 201 transitions, 3532 flow [2024-11-22 13:46:49,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:49,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:49,261 INFO L204 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] [2024-11-22 13:46:49,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-22 13:46:49,262 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:49,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:49,262 INFO L85 PathProgramCache]: Analyzing trace with hash -235990641, now seen corresponding path program 5 times [2024-11-22 13:46:49,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:49,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127331989] [2024-11-22 13:46:49,262 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:49,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:49,273 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:49,274 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:49,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:49,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127331989] [2024-11-22 13:46:49,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127331989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:49,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124145187] [2024-11-22 13:46:49,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:49,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:49,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:49,478 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:49,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 13:46:49,552 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:49,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:49,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 13:46:49,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:49,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:46:49,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-22 13:46:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:49,596 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:46:49,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124145187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:49,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:46:49,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-11-22 13:46:49,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114753303] [2024-11-22 13:46:49,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:49,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:46:49,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:49,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:46:49,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:46:49,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:49,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 201 transitions, 3532 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:49,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:49,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:49,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:49,966 INFO L124 PetriNetUnfolderBase]: 1546/2610 cut-off events. [2024-11-22 13:46:49,966 INFO L125 PetriNetUnfolderBase]: For 28847/28847 co-relation queries the response was YES. [2024-11-22 13:46:49,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16947 conditions, 2610 events. 1546/2610 cut-off events. For 28847/28847 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14259 event pairs, 645 based on Foata normal form. 20/2629 useless extension candidates. Maximal degree in co-relation 16881. Up to 2023 conditions per place. [2024-11-22 13:46:49,986 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 162 selfloop transitions, 76 changer transitions 0/239 dead transitions. [2024-11-22 13:46:49,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 239 transitions, 4350 flow [2024-11-22 13:46:49,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:46:49,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:46:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-11-22 13:46:49,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3949579831932773 [2024-11-22 13:46:49,987 INFO L175 Difference]: Start difference. First operand has 185 places, 201 transitions, 3532 flow. Second operand 7 states and 94 transitions. [2024-11-22 13:46:49,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 239 transitions, 4350 flow [2024-11-22 13:46:50,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 239 transitions, 4256 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-11-22 13:46:50,057 INFO L231 Difference]: Finished difference. Result has 191 places, 203 transitions, 3648 flow [2024-11-22 13:46:50,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3438, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3648, PETRI_PLACES=191, PETRI_TRANSITIONS=203} [2024-11-22 13:46:50,057 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-11-22 13:46:50,058 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 203 transitions, 3648 flow [2024-11-22 13:46:50,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:50,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:50,058 INFO L204 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] [2024-11-22 13:46:50,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-22 13:46:50,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:50,258 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:50,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1747895979, now seen corresponding path program 3 times [2024-11-22 13:46:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:50,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546098079] [2024-11-22 13:46:50,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:50,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:50,278 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:46:50,279 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:50,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:50,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546098079] [2024-11-22 13:46:50,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546098079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:50,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:50,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:46:50,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420120616] [2024-11-22 13:46:50,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:50,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:46:50,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:50,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:46:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:46:50,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:50,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 203 transitions, 3648 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:50,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:50,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:50,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:51,072 INFO L124 PetriNetUnfolderBase]: 1547/2617 cut-off events. [2024-11-22 13:46:51,073 INFO L125 PetriNetUnfolderBase]: For 28846/28846 co-relation queries the response was YES. [2024-11-22 13:46:51,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17076 conditions, 2617 events. 1547/2617 cut-off events. For 28846/28846 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14285 event pairs, 687 based on Foata normal form. 6/2622 useless extension candidates. Maximal degree in co-relation 17009. Up to 2016 conditions per place. [2024-11-22 13:46:51,100 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 139 selfloop transitions, 75 changer transitions 8/223 dead transitions. [2024-11-22 13:46:51,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 223 transitions, 4209 flow [2024-11-22 13:46:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:46:51,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 13:46:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-11-22 13:46:51,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27540106951871657 [2024-11-22 13:46:51,101 INFO L175 Difference]: Start difference. First operand has 191 places, 203 transitions, 3648 flow. Second operand 11 states and 103 transitions. [2024-11-22 13:46:51,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 223 transitions, 4209 flow [2024-11-22 13:46:51,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 223 transitions, 4053 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-22 13:46:51,172 INFO L231 Difference]: Finished difference. Result has 199 places, 201 transitions, 3605 flow [2024-11-22 13:46:51,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3496, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3605, PETRI_PLACES=199, PETRI_TRANSITIONS=201} [2024-11-22 13:46:51,172 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-11-22 13:46:51,173 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 201 transitions, 3605 flow [2024-11-22 13:46:51,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:51,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:51,173 INFO L204 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] [2024-11-22 13:46:51,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-22 13:46:51,173 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:51,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:51,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1551644783, now seen corresponding path program 4 times [2024-11-22 13:46:51,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:51,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360418927] [2024-11-22 13:46:51,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:51,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:51,180 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:51,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:51,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:51,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360418927] [2024-11-22 13:46:51,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360418927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:51,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37406356] [2024-11-22 13:46:51,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:51,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:51,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:51,241 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:51,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 13:46:51,309 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:51,310 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:51,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 13:46:51,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:51,339 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:46:51,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-22 13:46:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:51,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:51,428 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-22 13:46:51,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-22 13:46:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:51,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37406356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:46:51,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:46:51,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-22 13:46:51,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477329950] [2024-11-22 13:46:51,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:46:51,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:46:51,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:51,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:46:51,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:46:51,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:51,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 201 transitions, 3605 flow. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:51,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:51,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:51,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:52,087 INFO L124 PetriNetUnfolderBase]: 1730/2969 cut-off events. [2024-11-22 13:46:52,087 INFO L125 PetriNetUnfolderBase]: For 31098/31098 co-relation queries the response was YES. [2024-11-22 13:46:52,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18418 conditions, 2969 events. 1730/2969 cut-off events. For 31098/31098 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 16995 event pairs, 592 based on Foata normal form. 27/2996 useless extension candidates. Maximal degree in co-relation 18349. Up to 1577 conditions per place. [2024-11-22 13:46:52,111 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 225 selfloop transitions, 104 changer transitions 0/330 dead transitions. [2024-11-22 13:46:52,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 330 transitions, 5388 flow [2024-11-22 13:46:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:46:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:46:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 187 transitions. [2024-11-22 13:46:52,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-11-22 13:46:52,112 INFO L175 Difference]: Start difference. First operand has 199 places, 201 transitions, 3605 flow. Second operand 15 states and 187 transitions. [2024-11-22 13:46:52,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 330 transitions, 5388 flow [2024-11-22 13:46:52,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 330 transitions, 5199 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-11-22 13:46:52,185 INFO L231 Difference]: Finished difference. Result has 205 places, 220 transitions, 3997 flow [2024-11-22 13:46:52,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3997, PETRI_PLACES=205, PETRI_TRANSITIONS=220} [2024-11-22 13:46:52,186 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-11-22 13:46:52,186 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 220 transitions, 3997 flow [2024-11-22 13:46:52,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:52,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:52,186 INFO L204 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] [2024-11-22 13:46:52,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-22 13:46:52,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:52,387 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:52,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:52,388 INFO L85 PathProgramCache]: Analyzing trace with hash 399910681, now seen corresponding path program 6 times [2024-11-22 13:46:52,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:52,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322522533] [2024-11-22 13:46:52,388 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:46:52,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:52,406 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:46:52,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:52,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:52,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322522533] [2024-11-22 13:46:52,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322522533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:52,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:52,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:46:52,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596778920] [2024-11-22 13:46:52,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:52,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:46:52,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:52,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:46:52,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:46:52,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:52,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 220 transitions, 3997 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:52,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:52,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:52,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:53,041 INFO L124 PetriNetUnfolderBase]: 1747/3007 cut-off events. [2024-11-22 13:46:53,041 INFO L125 PetriNetUnfolderBase]: For 32515/32515 co-relation queries the response was YES. [2024-11-22 13:46:53,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19105 conditions, 3007 events. 1747/3007 cut-off events. For 32515/32515 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 17368 event pairs, 815 based on Foata normal form. 7/3013 useless extension candidates. Maximal degree in co-relation 19034. Up to 2386 conditions per place. [2024-11-22 13:46:53,066 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 172 selfloop transitions, 79 changer transitions 9/261 dead transitions. [2024-11-22 13:46:53,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 261 transitions, 4875 flow [2024-11-22 13:46:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:46:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 13:46:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-11-22 13:46:53,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29411764705882354 [2024-11-22 13:46:53,067 INFO L175 Difference]: Start difference. First operand has 205 places, 220 transitions, 3997 flow. Second operand 11 states and 110 transitions. [2024-11-22 13:46:53,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 261 transitions, 4875 flow [2024-11-22 13:46:53,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 261 transitions, 4812 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-22 13:46:53,156 INFO L231 Difference]: Finished difference. Result has 216 places, 222 transitions, 4159 flow [2024-11-22 13:46:53,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3937, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4159, PETRI_PLACES=216, PETRI_TRANSITIONS=222} [2024-11-22 13:46:53,157 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-11-22 13:46:53,157 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 222 transitions, 4159 flow [2024-11-22 13:46:53,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:53,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:53,157 INFO L204 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] [2024-11-22 13:46:53,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-22 13:46:53,157 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:53,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:53,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1462635089, now seen corresponding path program 5 times [2024-11-22 13:46:53,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:53,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242765724] [2024-11-22 13:46:53,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:53,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:53,170 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:53,170 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:53,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:53,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242765724] [2024-11-22 13:46:53,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242765724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:53,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019477031] [2024-11-22 13:46:53,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:53,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:53,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:53,387 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:53,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 13:46:53,477 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:53,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:53,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 13:46:53,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:53,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:46:53,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-22 13:46:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:53,578 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:46:53,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019477031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:53,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:46:53,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-22 13:46:53,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511687284] [2024-11-22 13:46:53,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:53,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:53,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:53,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:53,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:46:53,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:53,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 222 transitions, 4159 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:53,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:53,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:53,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:54,099 INFO L124 PetriNetUnfolderBase]: 1606/2720 cut-off events. [2024-11-22 13:46:54,099 INFO L125 PetriNetUnfolderBase]: For 31656/31656 co-relation queries the response was YES. [2024-11-22 13:46:54,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18010 conditions, 2720 events. 1606/2720 cut-off events. For 31656/31656 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 15020 event pairs, 712 based on Foata normal form. 6/2726 useless extension candidates. Maximal degree in co-relation 17934. Up to 2136 conditions per place. [2024-11-22 13:46:54,124 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 165 selfloop transitions, 75 changer transitions 5/246 dead transitions. [2024-11-22 13:46:54,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 246 transitions, 4742 flow [2024-11-22 13:46:54,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:46:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:46:54,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-11-22 13:46:54,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28823529411764703 [2024-11-22 13:46:54,125 INFO L175 Difference]: Start difference. First operand has 216 places, 222 transitions, 4159 flow. Second operand 10 states and 98 transitions. [2024-11-22 13:46:54,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 246 transitions, 4742 flow [2024-11-22 13:46:54,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 246 transitions, 4612 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-11-22 13:46:54,207 INFO L231 Difference]: Finished difference. Result has 213 places, 214 transitions, 3993 flow [2024-11-22 13:46:54,207 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3901, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3993, PETRI_PLACES=213, PETRI_TRANSITIONS=214} [2024-11-22 13:46:54,208 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-11-22 13:46:54,208 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 214 transitions, 3993 flow [2024-11-22 13:46:54,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:54,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:54,208 INFO L204 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] [2024-11-22 13:46:54,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-22 13:46:54,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:54,409 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:54,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:54,409 INFO L85 PathProgramCache]: Analyzing trace with hash -390428159, now seen corresponding path program 7 times [2024-11-22 13:46:54,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:54,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161271467] [2024-11-22 13:46:54,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:46:54,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:54,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:54,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161271467] [2024-11-22 13:46:54,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161271467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:54,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:54,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:46:54,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478420396] [2024-11-22 13:46:54,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:54,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:46:54,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:54,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:46:54,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:46:54,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:54,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 214 transitions, 3993 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:54,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:54,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:54,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:55,107 INFO L124 PetriNetUnfolderBase]: 1596/2704 cut-off events. [2024-11-22 13:46:55,107 INFO L125 PetriNetUnfolderBase]: For 31991/31991 co-relation queries the response was YES. [2024-11-22 13:46:55,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17812 conditions, 2704 events. 1596/2704 cut-off events. For 31991/31991 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14887 event pairs, 716 based on Foata normal form. 7/2711 useless extension candidates. Maximal degree in co-relation 17739. Up to 2124 conditions per place. [2024-11-22 13:46:55,131 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 163 selfloop transitions, 73 changer transitions 6/243 dead transitions. [2024-11-22 13:46:55,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 243 transitions, 4650 flow [2024-11-22 13:46:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:46:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:46:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-11-22 13:46:55,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28823529411764703 [2024-11-22 13:46:55,132 INFO L175 Difference]: Start difference. First operand has 213 places, 214 transitions, 3993 flow. Second operand 10 states and 98 transitions. [2024-11-22 13:46:55,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 243 transitions, 4650 flow [2024-11-22 13:46:55,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 243 transitions, 4452 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-22 13:46:55,212 INFO L231 Difference]: Finished difference. Result has 210 places, 210 transitions, 3843 flow [2024-11-22 13:46:55,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3843, PETRI_PLACES=210, PETRI_TRANSITIONS=210} [2024-11-22 13:46:55,213 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-11-22 13:46:55,213 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 210 transitions, 3843 flow [2024-11-22 13:46:55,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:55,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:55,213 INFO L204 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] [2024-11-22 13:46:55,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-22 13:46:55,213 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:55,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:55,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1354285777, now seen corresponding path program 6 times [2024-11-22 13:46:55,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:55,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635237589] [2024-11-22 13:46:55,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:46:55,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:55,227 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:46:55,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:55,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:55,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635237589] [2024-11-22 13:46:55,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635237589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:55,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512203917] [2024-11-22 13:46:55,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:46:55,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:55,451 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:55,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-22 13:46:55,546 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:46:55,546 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:55,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 13:46:55,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:55,624 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-22 13:46:55,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-22 13:46:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:55,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:55,712 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-22 13:46:55,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-22 13:46:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:55,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512203917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:46:55,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:46:55,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2024-11-22 13:46:55,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480595377] [2024-11-22 13:46:55,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:46:55,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:46:55,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:55,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:46:55,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:46:55,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:55,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 210 transitions, 3843 flow. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:55,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:55,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:55,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:56,309 INFO L124 PetriNetUnfolderBase]: 1776/2985 cut-off events. [2024-11-22 13:46:56,310 INFO L125 PetriNetUnfolderBase]: For 39314/39314 co-relation queries the response was YES. [2024-11-22 13:46:56,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20152 conditions, 2985 events. 1776/2985 cut-off events. For 39314/39314 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 16667 event pairs, 728 based on Foata normal form. 27/3012 useless extension candidates. Maximal degree in co-relation 20079. Up to 2197 conditions per place. [2024-11-22 13:46:56,333 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 178 selfloop transitions, 79 changer transitions 0/258 dead transitions. [2024-11-22 13:46:56,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 258 transitions, 4900 flow [2024-11-22 13:46:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:46:56,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:46:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-11-22 13:46:56,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3205882352941177 [2024-11-22 13:46:56,334 INFO L175 Difference]: Start difference. First operand has 210 places, 210 transitions, 3843 flow. Second operand 10 states and 109 transitions. [2024-11-22 13:46:56,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 258 transitions, 4900 flow [2024-11-22 13:46:56,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 258 transitions, 4719 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-22 13:46:56,472 INFO L231 Difference]: Finished difference. Result has 208 places, 217 transitions, 3997 flow [2024-11-22 13:46:56,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3662, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3997, PETRI_PLACES=208, PETRI_TRANSITIONS=217} [2024-11-22 13:46:56,472 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-11-22 13:46:56,473 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 217 transitions, 3997 flow [2024-11-22 13:46:56,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:56,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:56,473 INFO L204 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] [2024-11-22 13:46:56,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-22 13:46:56,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-22 13:46:56,674 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:56,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:56,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1924189995, now seen corresponding path program 7 times [2024-11-22 13:46:56,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:56,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094671218] [2024-11-22 13:46:56,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:46:56,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:56,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:56,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094671218] [2024-11-22 13:46:56,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094671218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:56,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:56,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:46:56,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763906186] [2024-11-22 13:46:56,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:56,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:46:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:56,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:46:56,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:46:56,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:56,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 217 transitions, 3997 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:56,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:56,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:56,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:57,449 INFO L124 PetriNetUnfolderBase]: 1815/3051 cut-off events. [2024-11-22 13:46:57,450 INFO L125 PetriNetUnfolderBase]: For 43346/43346 co-relation queries the response was YES. [2024-11-22 13:46:57,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20996 conditions, 3051 events. 1815/3051 cut-off events. For 43346/43346 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 17164 event pairs, 801 based on Foata normal form. 27/3078 useless extension candidates. Maximal degree in co-relation 20923. Up to 2440 conditions per place. [2024-11-22 13:46:57,470 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 164 selfloop transitions, 76 changer transitions 0/241 dead transitions. [2024-11-22 13:46:57,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 241 transitions, 4675 flow [2024-11-22 13:46:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:46:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:46:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-11-22 13:46:57,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3235294117647059 [2024-11-22 13:46:57,471 INFO L175 Difference]: Start difference. First operand has 208 places, 217 transitions, 3997 flow. Second operand 9 states and 99 transitions. [2024-11-22 13:46:57,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 241 transitions, 4675 flow [2024-11-22 13:46:57,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 241 transitions, 4530 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-11-22 13:46:57,554 INFO L231 Difference]: Finished difference. Result has 211 places, 219 transitions, 4069 flow [2024-11-22 13:46:57,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3860, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4069, PETRI_PLACES=211, PETRI_TRANSITIONS=219} [2024-11-22 13:46:57,555 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-11-22 13:46:57,555 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 219 transitions, 4069 flow [2024-11-22 13:46:57,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:57,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:57,555 INFO L204 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] [2024-11-22 13:46:57,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-22 13:46:57,555 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:57,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:57,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2038108469, now seen corresponding path program 8 times [2024-11-22 13:46:57,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:57,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740069278] [2024-11-22 13:46:57,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:57,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:57,571 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:57,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:57,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:57,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740069278] [2024-11-22 13:46:57,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740069278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:57,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:57,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:46:57,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827035757] [2024-11-22 13:46:57,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:57,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:46:57,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:57,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:46:57,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:46:57,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:57,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 219 transitions, 4069 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:57,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:57,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:57,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:58,283 INFO L124 PetriNetUnfolderBase]: 1816/3058 cut-off events. [2024-11-22 13:46:58,283 INFO L125 PetriNetUnfolderBase]: For 39554/39554 co-relation queries the response was YES. [2024-11-22 13:46:58,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20996 conditions, 3058 events. 1816/3058 cut-off events. For 39554/39554 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 17254 event pairs, 812 based on Foata normal form. 6/3064 useless extension candidates. Maximal degree in co-relation 20922. Up to 2481 conditions per place. [2024-11-22 13:46:58,311 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 156 selfloop transitions, 73 changer transitions 5/235 dead transitions. [2024-11-22 13:46:58,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 235 transitions, 4624 flow [2024-11-22 13:46:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:46:58,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:46:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-11-22 13:46:58,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28823529411764703 [2024-11-22 13:46:58,312 INFO L175 Difference]: Start difference. First operand has 211 places, 219 transitions, 4069 flow. Second operand 10 states and 98 transitions. [2024-11-22 13:46:58,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 235 transitions, 4624 flow [2024-11-22 13:46:58,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 235 transitions, 4463 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-22 13:46:58,412 INFO L231 Difference]: Finished difference. Result has 213 places, 218 transitions, 4033 flow [2024-11-22 13:46:58,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3910, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4033, PETRI_PLACES=213, PETRI_TRANSITIONS=218} [2024-11-22 13:46:58,412 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-11-22 13:46:58,412 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 218 transitions, 4033 flow [2024-11-22 13:46:58,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:58,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:58,413 INFO L204 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] [2024-11-22 13:46:58,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-22 13:46:58,413 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:58,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash 745405499, now seen corresponding path program 9 times [2024-11-22 13:46:58,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:58,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399189306] [2024-11-22 13:46:58,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:58,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:58,424 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:46:58,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:58,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:58,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399189306] [2024-11-22 13:46:58,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399189306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:58,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769342459] [2024-11-22 13:46:58,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:58,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:58,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:58,600 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:58,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-22 13:46:58,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:46:58,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:58,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 13:46:58,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:58,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:46:58,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-22 13:46:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:58,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:58,814 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-22 13:46:58,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-22 13:46:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:46:58,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769342459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:46:58,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:46:58,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-11-22 13:46:58,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107950843] [2024-11-22 13:46:58,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:46:58,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:46:58,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:58,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:46:58,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:46:58,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:46:58,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 218 transitions, 4033 flow. Second operand has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:58,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:58,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:46:58,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:59,512 INFO L124 PetriNetUnfolderBase]: 1837/3136 cut-off events. [2024-11-22 13:46:59,512 INFO L125 PetriNetUnfolderBase]: For 38758/38758 co-relation queries the response was YES. [2024-11-22 13:46:59,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20692 conditions, 3136 events. 1837/3136 cut-off events. For 38758/38758 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18044 event pairs, 754 based on Foata normal form. 27/3163 useless extension candidates. Maximal degree in co-relation 20618. Up to 2295 conditions per place. [2024-11-22 13:46:59,546 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 198 selfloop transitions, 90 changer transitions 0/289 dead transitions. [2024-11-22 13:46:59,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 289 transitions, 5194 flow [2024-11-22 13:46:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 13:46:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-22 13:46:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 160 transitions. [2024-11-22 13:46:59,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29411764705882354 [2024-11-22 13:46:59,547 INFO L175 Difference]: Start difference. First operand has 213 places, 218 transitions, 4033 flow. Second operand 16 states and 160 transitions. [2024-11-22 13:46:59,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 289 transitions, 5194 flow [2024-11-22 13:46:59,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 289 transitions, 5028 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-22 13:46:59,634 INFO L231 Difference]: Finished difference. Result has 223 places, 231 transitions, 4310 flow [2024-11-22 13:46:59,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3877, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4310, PETRI_PLACES=223, PETRI_TRANSITIONS=231} [2024-11-22 13:46:59,634 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-11-22 13:46:59,634 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 231 transitions, 4310 flow [2024-11-22 13:46:59,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:59,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:59,635 INFO L204 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] [2024-11-22 13:46:59,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-22 13:46:59,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:59,835 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:46:59,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1196667443, now seen corresponding path program 8 times [2024-11-22 13:46:59,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:59,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453193840] [2024-11-22 13:46:59,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:59,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:59,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:59,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:47:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:47:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:47:00,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453193840] [2024-11-22 13:47:00,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453193840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:47:00,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:47:00,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:47:00,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446139347] [2024-11-22 13:47:00,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:47:00,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:47:00,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:47:00,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:47:00,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:47:00,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:47:00,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 231 transitions, 4310 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:47:00,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:47:00,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:47:00,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:47:00,576 INFO L124 PetriNetUnfolderBase]: 1830/3129 cut-off events. [2024-11-22 13:47:00,576 INFO L125 PetriNetUnfolderBase]: For 37430/37430 co-relation queries the response was YES. [2024-11-22 13:47:00,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20842 conditions, 3129 events. 1830/3129 cut-off events. For 37430/37430 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18120 event pairs, 833 based on Foata normal form. 7/3136 useless extension candidates. Maximal degree in co-relation 20764. Up to 2553 conditions per place. [2024-11-22 13:47:00,602 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 168 selfloop transitions, 70 changer transitions 6/245 dead transitions. [2024-11-22 13:47:00,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 245 transitions, 4811 flow [2024-11-22 13:47:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:47:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:47:00,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-11-22 13:47:00,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2852941176470588 [2024-11-22 13:47:00,604 INFO L175 Difference]: Start difference. First operand has 223 places, 231 transitions, 4310 flow. Second operand 10 states and 97 transitions. [2024-11-22 13:47:00,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 245 transitions, 4811 flow [2024-11-22 13:47:00,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 245 transitions, 4704 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-11-22 13:47:00,695 INFO L231 Difference]: Finished difference. Result has 221 places, 227 transitions, 4248 flow [2024-11-22 13:47:00,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4153, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4248, PETRI_PLACES=221, PETRI_TRANSITIONS=227} [2024-11-22 13:47:00,695 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-11-22 13:47:00,695 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 227 transitions, 4248 flow [2024-11-22 13:47:00,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:47:00,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:47:00,695 INFO L204 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] [2024-11-22 13:47:00,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-11-22 13:47:00,696 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:47:00,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:47:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash 656395805, now seen corresponding path program 10 times [2024-11-22 13:47:00,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:47:00,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298837651] [2024-11-22 13:47:00,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:47:00,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:47:00,702 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:47:00,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:47:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:47:00,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:47:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298837651] [2024-11-22 13:47:00,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298837651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:47:00,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:47:00,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:47:00,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48140098] [2024-11-22 13:47:00,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:47:00,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:47:00,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:47:00,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:47:00,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:47:00,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:47:00,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 227 transitions, 4248 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:47:00,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:47:00,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:47:00,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:47:01,152 INFO L124 PetriNetUnfolderBase]: 1731/2933 cut-off events. [2024-11-22 13:47:01,152 INFO L125 PetriNetUnfolderBase]: For 35912/35912 co-relation queries the response was YES. [2024-11-22 13:47:01,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19898 conditions, 2933 events. 1731/2933 cut-off events. For 35912/35912 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16496 event pairs, 775 based on Foata normal form. 6/2939 useless extension candidates. Maximal degree in co-relation 19821. Up to 2377 conditions per place. [2024-11-22 13:47:01,231 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 167 selfloop transitions, 64 changer transitions 5/237 dead transitions. [2024-11-22 13:47:01,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 237 transitions, 4659 flow [2024-11-22 13:47:01,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:47:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:47:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-11-22 13:47:01,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3235294117647059 [2024-11-22 13:47:01,232 INFO L175 Difference]: Start difference. First operand has 221 places, 227 transitions, 4248 flow. Second operand 8 states and 88 transitions. [2024-11-22 13:47:01,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 237 transitions, 4659 flow [2024-11-22 13:47:01,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 237 transitions, 4518 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-22 13:47:01,309 INFO L231 Difference]: Finished difference. Result has 217 places, 220 transitions, 4064 flow [2024-11-22 13:47:01,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3986, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4064, PETRI_PLACES=217, PETRI_TRANSITIONS=220} [2024-11-22 13:47:01,310 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-11-22 13:47:01,310 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 220 transitions, 4064 flow [2024-11-22 13:47:01,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:47:01,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:47:01,310 INFO L204 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] [2024-11-22 13:47:01,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-11-22 13:47:01,311 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:47:01,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:47:01,311 INFO L85 PathProgramCache]: Analyzing trace with hash -343520607, now seen corresponding path program 9 times [2024-11-22 13:47:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:47:01,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830782694] [2024-11-22 13:47:01,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:47:01,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:47:01,322 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:47:01,322 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:47:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:47:01,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:47:01,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830782694] [2024-11-22 13:47:01,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830782694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:47:01,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:47:01,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:47:01,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984406573] [2024-11-22 13:47:01,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:47:01,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:47:01,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:47:01,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:47:01,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:47:01,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:47:01,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 220 transitions, 4064 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:47:01,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:47:01,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:47:01,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:47:01,910 INFO L124 PetriNetUnfolderBase]: 1654/2797 cut-off events. [2024-11-22 13:47:01,911 INFO L125 PetriNetUnfolderBase]: For 34233/34233 co-relation queries the response was YES. [2024-11-22 13:47:01,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18969 conditions, 2797 events. 1654/2797 cut-off events. For 34233/34233 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 15460 event pairs, 738 based on Foata normal form. 7/2803 useless extension candidates. Maximal degree in co-relation 18892. Up to 2271 conditions per place. [2024-11-22 13:47:01,935 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 163 selfloop transitions, 62 changer transitions 6/232 dead transitions. [2024-11-22 13:47:01,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 232 transitions, 4488 flow [2024-11-22 13:47:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:47:01,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:47:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-11-22 13:47:01,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27941176470588236 [2024-11-22 13:47:01,936 INFO L175 Difference]: Start difference. First operand has 217 places, 220 transitions, 4064 flow. Second operand 10 states and 95 transitions. [2024-11-22 13:47:01,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 232 transitions, 4488 flow [2024-11-22 13:47:02,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 232 transitions, 4348 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-22 13:47:02,023 INFO L231 Difference]: Finished difference. Result has 214 places, 214 transitions, 3902 flow [2024-11-22 13:47:02,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3823, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3902, PETRI_PLACES=214, PETRI_TRANSITIONS=214} [2024-11-22 13:47:02,081 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-11-22 13:47:02,081 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 214 transitions, 3902 flow [2024-11-22 13:47:02,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:47:02,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:47:02,081 INFO L204 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] [2024-11-22 13:47:02,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-11-22 13:47:02,082 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:47:02,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:47:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1459693281, now seen corresponding path program 10 times [2024-11-22 13:47:02,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:47:02,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530579619] [2024-11-22 13:47:02,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:47:02,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:47:02,092 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:47:02,092 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:47:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:47:02,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:47:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530579619] [2024-11-22 13:47:02,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530579619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:47:02,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:47:02,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:47:02,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984402287] [2024-11-22 13:47:02,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:47:02,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:47:02,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:47:02,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:47:02,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:47:02,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:47:02,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 214 transitions, 3902 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:47:02,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:47:02,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:47:02,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:47:02,913 INFO L124 PetriNetUnfolderBase]: 1612/2728 cut-off events. [2024-11-22 13:47:02,913 INFO L125 PetriNetUnfolderBase]: For 32725/32725 co-relation queries the response was YES. [2024-11-22 13:47:02,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18356 conditions, 2728 events. 1612/2728 cut-off events. For 32725/32725 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14985 event pairs, 731 based on Foata normal form. 7/2735 useless extension candidates. Maximal degree in co-relation 18281. Up to 2234 conditions per place. [2024-11-22 13:47:02,943 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 163 selfloop transitions, 52 changer transitions 13/229 dead transitions. [2024-11-22 13:47:02,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 229 transitions, 4332 flow [2024-11-22 13:47:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:47:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:47:02,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-11-22 13:47:02,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30718954248366015 [2024-11-22 13:47:02,944 INFO L175 Difference]: Start difference. First operand has 214 places, 214 transitions, 3902 flow. Second operand 9 states and 94 transitions. [2024-11-22 13:47:02,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 229 transitions, 4332 flow [2024-11-22 13:47:03,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 229 transitions, 4170 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-11-22 13:47:03,036 INFO L231 Difference]: Finished difference. Result has 208 places, 205 transitions, 3666 flow [2024-11-22 13:47:03,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3666, PETRI_PLACES=208, PETRI_TRANSITIONS=205} [2024-11-22 13:47:03,036 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-11-22 13:47:03,037 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 205 transitions, 3666 flow [2024-11-22 13:47:03,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:47:03,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:47:03,037 INFO L204 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] [2024-11-22 13:47:03,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-11-22 13:47:03,038 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:47:03,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:47:03,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1713036003, now seen corresponding path program 11 times [2024-11-22 13:47:03,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:47:03,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653062597] [2024-11-22 13:47:03,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:47:03,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:47:03,050 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:47:03,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:47:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:47:03,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:47:03,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653062597] [2024-11-22 13:47:03,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653062597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:47:03,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167385843] [2024-11-22 13:47:03,256 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:47:03,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:47:03,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:47:03,259 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:47:03,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-22 13:47:03,351 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:47:03,352 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:47:03,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 13:47:03,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:47:03,381 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-22 13:47:03,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-22 13:47:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:47:03,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:47:03,462 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-22 13:47:03,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-22 13:47:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:47:03,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167385843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:47:03,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:47:03,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2024-11-22 13:47:03,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243530478] [2024-11-22 13:47:03,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:47:03,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:47:03,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:47:03,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:47:03,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:47:03,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-22 13:47:03,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 205 transitions, 3666 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:47:03,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:47:03,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-22 13:47:03,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand