./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-array-int-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-array-int-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 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:43:40,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:43:40,788 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:43:40,793 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:43:40,793 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:43:40,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:43:40,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:43:40,823 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:43:40,824 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:43:40,825 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:43:40,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:43:40,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:43:40,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:43:40,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:43:40,827 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:43:40,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:43:40,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:43:40,828 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:43:40,828 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:43:40,828 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:43:40,828 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:43:40,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:43:40,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:43:40,831 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:43:40,831 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:43:40,831 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:43:40,832 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:43:40,832 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:43:40,832 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:43:40,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:43:40,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:43:40,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:43:40,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:43:40,833 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:43:40,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:43:40,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:43:40,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:43:40,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:43:40,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:43:40,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:43:40,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:43:40,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:43:40,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2024-11-22 13:43:41,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:43:41,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:43:41,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:43:41,029 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:43:41,030 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:43:41,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-22 13:43:42,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:43:42,319 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:43:42,320 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-22 13:43:42,327 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083d0bccb/e64fab6f14ac4bd0a51db8ca70523a16/FLAG572187455 [2024-11-22 13:43:42,744 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083d0bccb/e64fab6f14ac4bd0a51db8ca70523a16 [2024-11-22 13:43:42,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:43:42,747 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:43:42,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:43:42,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:43:42,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:43:42,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:43:42" (1/1) ... [2024-11-22 13:43:42,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53012485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:42, skipping insertion in model container [2024-11-22 13:43:42,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:43:42" (1/1) ... [2024-11-22 13:43:42,785 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:43:42,958 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-array-int-symm.wvr.c[2508,2521] [2024-11-22 13:43:42,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:43:42,971 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:43:42,986 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-array-int-symm.wvr.c[2508,2521] [2024-11-22 13:43:42,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:43:43,001 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:43:43,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43 WrapperNode [2024-11-22 13:43:43,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:43:43,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:43:43,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:43:43,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:43:43,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (1/1) ... [2024-11-22 13:43:43,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (1/1) ... [2024-11-22 13:43:43,039 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 193 [2024-11-22 13:43:43,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:43:43,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:43:43,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:43:43,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:43:43,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (1/1) ... [2024-11-22 13:43:43,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (1/1) ... [2024-11-22 13:43:43,057 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (1/1) ... [2024-11-22 13:43:43,073 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 13:43:43,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (1/1) ... [2024-11-22 13:43:43,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (1/1) ... [2024-11-22 13:43:43,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (1/1) ... [2024-11-22 13:43:43,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (1/1) ... [2024-11-22 13:43:43,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (1/1) ... [2024-11-22 13:43:43,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (1/1) ... [2024-11-22 13:43:43,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:43:43,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:43:43,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:43:43,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:43:43,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (1/1) ... [2024-11-22 13:43:43,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:43:43,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:43,118 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 13:43:43,121 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 13:43:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:43:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:43:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:43:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:43:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:43:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:43:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:43:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:43:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:43:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:43:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:43:43,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:43:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:43:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:43:43,161 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 13:43:43,252 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:43:43,253 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:43:43,488 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:43:43,489 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:43:43,736 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:43:43,736 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-22 13:43:43,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:43 BoogieIcfgContainer [2024-11-22 13:43:43,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:43:43,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:43:43,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:43:43,743 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:43:43,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:43:42" (1/3) ... [2024-11-22 13:43:43,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b42044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:43, skipping insertion in model container [2024-11-22 13:43:43,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:43" (2/3) ... [2024-11-22 13:43:43,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b42044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:43, skipping insertion in model container [2024-11-22 13:43:43,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:43" (3/3) ... [2024-11-22 13:43:43,745 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2024-11-22 13:43:43,756 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:43:43,756 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:43:43,756 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:43:43,793 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 13:43:43,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 70 flow [2024-11-22 13:43:43,842 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-22 13:43:43,843 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:43:43,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 6/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-11-22 13:43:43,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 70 flow [2024-11-22 13:43:43,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 25 transitions, 62 flow [2024-11-22 13:43:43,855 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:43:43,861 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;@3f9730d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:43:43,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-22 13:43:43,870 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:43:43,873 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2024-11-22 13:43:43,873 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:43:43,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:43,874 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 13:43:43,874 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 13:43:43,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:43,880 INFO L85 PathProgramCache]: Analyzing trace with hash 245197459, now seen corresponding path program 1 times [2024-11-22 13:43:43,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:43,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283192492] [2024-11-22 13:43:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:43,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:44,378 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 13:43:44,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:44,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283192492] [2024-11-22 13:43:44,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283192492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:44,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:44,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:43:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093689104] [2024-11-22 13:43:44,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:44,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:43:44,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:44,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:43:44,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:43:44,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:44,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 13:43:44,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:44,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:44,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:44,729 INFO L124 PetriNetUnfolderBase]: 288/485 cut-off events. [2024-11-22 13:43:44,729 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-22 13:43:44,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 485 events. 288/485 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1769 event pairs, 96 based on Foata normal form. 1/372 useless extension candidates. Maximal degree in co-relation 536. Up to 178 conditions per place. [2024-11-22 13:43:44,737 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 64 selfloop transitions, 10 changer transitions 1/76 dead transitions. [2024-11-22 13:43:44,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 76 transitions, 344 flow [2024-11-22 13:43:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:43:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:43:44,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-11-22 13:43:44,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-11-22 13:43:44,750 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 8 states and 100 transitions. [2024-11-22 13:43:44,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 76 transitions, 344 flow [2024-11-22 13:43:44,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 76 transitions, 316 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 13:43:44,756 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 123 flow [2024-11-22 13:43:44,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=123, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2024-11-22 13:43:44,761 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-11-22 13:43:44,761 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 123 flow [2024-11-22 13:43:44,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 13:43:44,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:44,762 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:44,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:43:44,762 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 13:43:44,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:44,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1983090722, now seen corresponding path program 1 times [2024-11-22 13:43:44,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:44,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413246789] [2024-11-22 13:43:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:44,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:44,910 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 13:43:44,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:44,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413246789] [2024-11-22 13:43:44,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413246789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:44,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118023183] [2024-11-22 13:43:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:44,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:44,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:44,914 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 13:43:44,915 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 13:43:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:44,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 13:43:44,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:45,125 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 13:43:45,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:43:45,225 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 13:43:45,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118023183] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:45,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:43:45,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2024-11-22 13:43:45,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272405526] [2024-11-22 13:43:45,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:45,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:43:45,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:45,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:43:45,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:43:45,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:45,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 123 flow. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 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 13:43:45,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:45,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:45,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:45,509 INFO L124 PetriNetUnfolderBase]: 617/1023 cut-off events. [2024-11-22 13:43:45,509 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-22 13:43:45,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1023 events. 617/1023 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4490 event pairs, 279 based on Foata normal form. 1/897 useless extension candidates. Maximal degree in co-relation 1517. Up to 479 conditions per place. [2024-11-22 13:43:45,516 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 92 selfloop transitions, 12 changer transitions 1/106 dead transitions. [2024-11-22 13:43:45,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 106 transitions, 540 flow [2024-11-22 13:43:45,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:43:45,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:43:45,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-11-22 13:43:45,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-22 13:43:45,519 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 123 flow. Second operand 8 states and 119 transitions. [2024-11-22 13:43:45,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 106 transitions, 540 flow [2024-11-22 13:43:45,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 106 transitions, 536 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-22 13:43:45,523 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 210 flow [2024-11-22 13:43:45,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2024-11-22 13:43:45,524 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2024-11-22 13:43:45,525 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 210 flow [2024-11-22 13:43:45,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 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 13:43:45,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:45,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:45,533 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 13:43:45,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:45,727 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 13:43:45,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:45,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1744370288, now seen corresponding path program 1 times [2024-11-22 13:43:45,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:45,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365213176] [2024-11-22 13:43:45,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:45,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:45,807 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 13:43:45,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:45,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365213176] [2024-11-22 13:43:45,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365213176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:45,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:45,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:43:45,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123632601] [2024-11-22 13:43:45,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:45,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:43:45,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:45,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:43:45,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:43:45,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:45,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 13:43:45,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:45,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:45,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:45,937 INFO L124 PetriNetUnfolderBase]: 487/833 cut-off events. [2024-11-22 13:43:45,937 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2024-11-22 13:43:45,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 833 events. 487/833 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3707 event pairs, 199 based on Foata normal form. 0/745 useless extension candidates. Maximal degree in co-relation 1625. Up to 539 conditions per place. [2024-11-22 13:43:45,941 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 62 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2024-11-22 13:43:45,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 447 flow [2024-11-22 13:43:45,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:43:45,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:43:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-11-22 13:43:45,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-11-22 13:43:45,944 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 210 flow. Second operand 6 states and 74 transitions. [2024-11-22 13:43:45,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 447 flow [2024-11-22 13:43:45,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 420 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-22 13:43:45,950 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 214 flow [2024-11-22 13:43:45,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-22 13:43:45,952 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2024-11-22 13:43:45,952 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 214 flow [2024-11-22 13:43:45,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 13:43:45,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:45,952 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:45,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:43:45,953 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 13:43:45,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:45,953 INFO L85 PathProgramCache]: Analyzing trace with hash 574455480, now seen corresponding path program 1 times [2024-11-22 13:43:45,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:45,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751527164] [2024-11-22 13:43:45,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:46,024 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 13:43:46,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:46,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751527164] [2024-11-22 13:43:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751527164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:46,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:46,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:43:46,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822380421] [2024-11-22 13:43:46,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:46,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:43:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:46,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:43:46,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:43:46,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:46,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 214 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 13:43:46,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:46,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:46,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:46,141 INFO L124 PetriNetUnfolderBase]: 416/723 cut-off events. [2024-11-22 13:43:46,142 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2024-11-22 13:43:46,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 723 events. 416/723 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3036 event pairs, 207 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 1535. Up to 539 conditions per place. [2024-11-22 13:43:46,146 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 52 selfloop transitions, 6 changer transitions 2/61 dead transitions. [2024-11-22 13:43:46,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 400 flow [2024-11-22 13:43:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:43:46,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:43:46,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-11-22 13:43:46,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-11-22 13:43:46,147 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 214 flow. Second operand 6 states and 67 transitions. [2024-11-22 13:43:46,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 400 flow [2024-11-22 13:43:46,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 384 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-22 13:43:46,152 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 220 flow [2024-11-22 13:43:46,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-11-22 13:43:46,153 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 24 predicate places. [2024-11-22 13:43:46,154 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 220 flow [2024-11-22 13:43:46,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 13:43:46,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:46,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:46,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:43:46,155 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 13:43:46,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:46,156 INFO L85 PathProgramCache]: Analyzing trace with hash 603243545, now seen corresponding path program 1 times [2024-11-22 13:43:46,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:46,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112517189] [2024-11-22 13:43:46,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:46,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:46,279 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 13:43:46,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:46,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112517189] [2024-11-22 13:43:46,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112517189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:46,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429678219] [2024-11-22 13:43:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:46,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:46,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:46,282 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 13:43:46,283 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 13:43:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:46,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 13:43:46,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:46,454 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 13:43:46,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:43:46,524 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 13:43:46,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429678219] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:46,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:43:46,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2024-11-22 13:43:46,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879082632] [2024-11-22 13:43:46,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:46,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:43:46,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:46,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:43:46,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:43:46,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:46,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 13:43:46,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:46,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:46,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:46,703 INFO L124 PetriNetUnfolderBase]: 391/674 cut-off events. [2024-11-22 13:43:46,703 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-11-22 13:43:46,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1792 conditions, 674 events. 391/674 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2835 event pairs, 192 based on Foata normal form. 1/673 useless extension candidates. Maximal degree in co-relation 1757. Up to 539 conditions per place. [2024-11-22 13:43:46,707 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 50 selfloop transitions, 5 changer transitions 11/67 dead transitions. [2024-11-22 13:43:46,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 421 flow [2024-11-22 13:43:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:43:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:43:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-11-22 13:43:46,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-11-22 13:43:46,709 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 220 flow. Second operand 7 states and 77 transitions. [2024-11-22 13:43:46,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 421 flow [2024-11-22 13:43:46,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 408 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-22 13:43:46,712 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 205 flow [2024-11-22 13:43:46,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2024-11-22 13:43:46,712 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-11-22 13:43:46,712 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 205 flow [2024-11-22 13:43:46,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 13:43:46,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:46,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:46,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 13:43:46,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:46,914 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 13:43:46,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:46,914 INFO L85 PathProgramCache]: Analyzing trace with hash -915834458, now seen corresponding path program 2 times [2024-11-22 13:43:46,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:46,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597154808] [2024-11-22 13:43:46,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:46,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:46,931 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:43:46,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:47,027 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 13:43:47,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:47,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597154808] [2024-11-22 13:43:47,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597154808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:47,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:47,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:43:47,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958625453] [2024-11-22 13:43:47,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:47,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:43:47,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:43:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:43:47,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:47,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 205 flow. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 13:43:47,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:47,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:47,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:47,221 INFO L124 PetriNetUnfolderBase]: 388/672 cut-off events. [2024-11-22 13:43:47,222 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-22 13:43:47,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 672 events. 388/672 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2805 event pairs, 61 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 1737. Up to 232 conditions per place. [2024-11-22 13:43:47,225 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 67 selfloop transitions, 18 changer transitions 1/87 dead transitions. [2024-11-22 13:43:47,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 87 transitions, 523 flow [2024-11-22 13:43:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:43:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:43:47,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-11-22 13:43:47,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2024-11-22 13:43:47,226 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 205 flow. Second operand 9 states and 107 transitions. [2024-11-22 13:43:47,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 87 transitions, 523 flow [2024-11-22 13:43:47,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 504 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-22 13:43:47,228 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 288 flow [2024-11-22 13:43:47,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=288, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-11-22 13:43:47,229 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 31 predicate places. [2024-11-22 13:43:47,229 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 288 flow [2024-11-22 13:43:47,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 13:43:47,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:47,230 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:47,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:43:47,230 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 13:43:47,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:47,230 INFO L85 PathProgramCache]: Analyzing trace with hash -133012491, now seen corresponding path program 2 times [2024-11-22 13:43:47,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:47,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575558535] [2024-11-22 13:43:47,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:47,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:47,241 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:43:47,242 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:47,378 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 13:43:47,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:47,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575558535] [2024-11-22 13:43:47,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575558535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:47,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:47,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:43:47,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357240809] [2024-11-22 13:43:47,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:47,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:43:47,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:47,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:43:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:43:47,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:47,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 13:43:47,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:47,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:47,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:47,555 INFO L124 PetriNetUnfolderBase]: 388/670 cut-off events. [2024-11-22 13:43:47,556 INFO L125 PetriNetUnfolderBase]: For 840/840 co-relation queries the response was YES. [2024-11-22 13:43:47,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 670 events. 388/670 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2814 event pairs, 114 based on Foata normal form. 1/669 useless extension candidates. Maximal degree in co-relation 1716. Up to 589 conditions per place. [2024-11-22 13:43:47,559 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 38 selfloop transitions, 6 changer transitions 20/65 dead transitions. [2024-11-22 13:43:47,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 467 flow [2024-11-22 13:43:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:43:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:43:47,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 78 transitions. [2024-11-22 13:43:47,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30952380952380953 [2024-11-22 13:43:47,561 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 288 flow. Second operand 9 states and 78 transitions. [2024-11-22 13:43:47,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 467 flow [2024-11-22 13:43:47,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 453 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-22 13:43:47,563 INFO L231 Difference]: Finished difference. Result has 65 places, 42 transitions, 255 flow [2024-11-22 13:43:47,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=255, PETRI_PLACES=65, PETRI_TRANSITIONS=42} [2024-11-22 13:43:47,564 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-11-22 13:43:47,565 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 42 transitions, 255 flow [2024-11-22 13:43:47,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 13:43:47,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:47,565 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 13:43:47,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:43:47,565 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 13:43:47,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash 425526803, now seen corresponding path program 1 times [2024-11-22 13:43:47,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:47,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394584461] [2024-11-22 13:43:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:47,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:47,631 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 13:43:47,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:47,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394584461] [2024-11-22 13:43:47,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394584461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:47,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:47,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:43:47,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474375903] [2024-11-22 13:43:47,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:47,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:43:47,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:47,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:43:47,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:43:47,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:47,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 42 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 13:43:47,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:47,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:47,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:47,724 INFO L124 PetriNetUnfolderBase]: 243/427 cut-off events. [2024-11-22 13:43:47,724 INFO L125 PetriNetUnfolderBase]: For 583/583 co-relation queries the response was YES. [2024-11-22 13:43:47,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 427 events. 243/427 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1555 event pairs, 96 based on Foata normal form. 25/452 useless extension candidates. Maximal degree in co-relation 1193. Up to 188 conditions per place. [2024-11-22 13:43:47,726 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 48 selfloop transitions, 6 changer transitions 2/57 dead transitions. [2024-11-22 13:43:47,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 386 flow [2024-11-22 13:43:47,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:43:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:43:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-11-22 13:43:47,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-11-22 13:43:47,727 INFO L175 Difference]: Start difference. First operand has 65 places, 42 transitions, 255 flow. Second operand 5 states and 66 transitions. [2024-11-22 13:43:47,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 386 flow [2024-11-22 13:43:47,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 339 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-11-22 13:43:47,729 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 197 flow [2024-11-22 13:43:47,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-11-22 13:43:47,730 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2024-11-22 13:43:47,730 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 197 flow [2024-11-22 13:43:47,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 13:43:47,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:47,730 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 13:43:47,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:43:47,730 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 13:43:47,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1357813479, now seen corresponding path program 1 times [2024-11-22 13:43:47,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:47,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575849698] [2024-11-22 13:43:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:47,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:47,781 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 13:43:47,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:47,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575849698] [2024-11-22 13:43:47,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575849698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:47,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:47,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:43:47,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844491706] [2024-11-22 13:43:47,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:47,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:43:47,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:47,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:43:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:43:47,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:47,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 13:43:47,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:47,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:47,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:47,859 INFO L124 PetriNetUnfolderBase]: 175/316 cut-off events. [2024-11-22 13:43:47,859 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2024-11-22 13:43:47,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 316 events. 175/316 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1126 event pairs, 78 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 815. Up to 188 conditions per place. [2024-11-22 13:43:47,861 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 26 selfloop transitions, 2 changer transitions 20/49 dead transitions. [2024-11-22 13:43:47,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 295 flow [2024-11-22 13:43:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:43:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:43:47,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-22 13:43:47,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-22 13:43:47,862 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 197 flow. Second operand 5 states and 60 transitions. [2024-11-22 13:43:47,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 295 flow [2024-11-22 13:43:47,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 280 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-22 13:43:47,863 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 114 flow [2024-11-22 13:43:47,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2024-11-22 13:43:47,864 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2024-11-22 13:43:47,864 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 114 flow [2024-11-22 13:43:47,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 13:43:47,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:47,864 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 13:43:47,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:43:47,864 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 13:43:47,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:47,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1127311936, now seen corresponding path program 1 times [2024-11-22 13:43:47,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:47,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519870822] [2024-11-22 13:43:47,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:47,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:47,974 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 13:43:47,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:47,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519870822] [2024-11-22 13:43:47,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519870822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:47,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891931004] [2024-11-22 13:43:47,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:47,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:47,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:47,977 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 13:43:47,977 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 13:43:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:48,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:43:48,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:48,092 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 13:43:48,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:43:48,151 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 13:43:48,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891931004] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:48,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:43:48,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-22 13:43:48,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754260593] [2024-11-22 13:43:48,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:48,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:43:48,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:48,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:43:48,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:43:48,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:48,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 13:43:48,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:48,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:48,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:48,253 INFO L124 PetriNetUnfolderBase]: 159/268 cut-off events. [2024-11-22 13:43:48,254 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-22 13:43:48,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 268 events. 159/268 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 747 event pairs, 48 based on Foata normal form. 11/278 useless extension candidates. Maximal degree in co-relation 686. Up to 133 conditions per place. [2024-11-22 13:43:48,255 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 32 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-11-22 13:43:48,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 236 flow [2024-11-22 13:43:48,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:43:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:43:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 60 transitions. [2024-11-22 13:43:48,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30612244897959184 [2024-11-22 13:43:48,256 INFO L175 Difference]: Start difference. First operand has 47 places, 29 transitions, 114 flow. Second operand 7 states and 60 transitions. [2024-11-22 13:43:48,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 236 flow [2024-11-22 13:43:48,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 212 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-22 13:43:48,258 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 131 flow [2024-11-22 13:43:48,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-11-22 13:43:48,259 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-11-22 13:43:48,259 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 131 flow [2024-11-22 13:43:48,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 13:43:48,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:48,259 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] [2024-11-22 13:43:48,265 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 13:43:48,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:48,460 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 13:43:48,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:48,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1060041231, now seen corresponding path program 1 times [2024-11-22 13:43:48,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:48,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685946909] [2024-11-22 13:43:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:48,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:48,592 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 13:43:48,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:48,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685946909] [2024-11-22 13:43:48,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685946909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:48,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026953507] [2024-11-22 13:43:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:48,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:48,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:48,595 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 13:43:48,596 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 13:43:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:48,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:43:48,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:48,709 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 13:43:48,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:43:48,757 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 13:43:48,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026953507] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:48,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:43:48,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-22 13:43:48,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504943037] [2024-11-22 13:43:48,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:48,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:43:48,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:48,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:43:48,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:43:48,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:48,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 13:43:48,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:48,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:48,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:48,851 INFO L124 PetriNetUnfolderBase]: 227/404 cut-off events. [2024-11-22 13:43:48,851 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2024-11-22 13:43:48,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 404 events. 227/404 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1393 event pairs, 116 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 1060. Up to 214 conditions per place. [2024-11-22 13:43:48,853 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 36 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-11-22 13:43:48,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 274 flow [2024-11-22 13:43:48,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:43:48,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:43:48,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2024-11-22 13:43:48,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3163265306122449 [2024-11-22 13:43:48,854 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 131 flow. Second operand 7 states and 62 transitions. [2024-11-22 13:43:48,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 274 flow [2024-11-22 13:43:48,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 259 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 13:43:48,855 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 150 flow [2024-11-22 13:43:48,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-11-22 13:43:48,855 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2024-11-22 13:43:48,855 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 150 flow [2024-11-22 13:43:48,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 13:43:48,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:48,856 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 13:43:48,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 13:43:49,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:49,056 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 13:43:49,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:49,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1721947342, now seen corresponding path program 1 times [2024-11-22 13:43:49,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:49,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607219694] [2024-11-22 13:43:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:49,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:43:49,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:49,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607219694] [2024-11-22 13:43:49,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607219694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:49,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874396279] [2024-11-22 13:43:49,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:49,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:49,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:49,491 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 13:43:49,493 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 13:43:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:49,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 13:43:49,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:49,669 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-22 13:43:49,670 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 39 treesize of output 24 [2024-11-22 13:43:49,692 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 13:43:49,693 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:43:49,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874396279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:49,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:43:49,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-22 13:43:49,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153253509] [2024-11-22 13:43:49,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:49,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:43:49,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:49,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:43:49,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:43:49,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:49,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 13:43:49,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:49,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:49,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:49,916 INFO L124 PetriNetUnfolderBase]: 333/599 cut-off events. [2024-11-22 13:43:49,916 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2024-11-22 13:43:49,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 599 events. 333/599 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2495 event pairs, 139 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 1714. Up to 357 conditions per place. [2024-11-22 13:43:49,919 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 64 selfloop transitions, 7 changer transitions 6/78 dead transitions. [2024-11-22 13:43:49,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 78 transitions, 478 flow [2024-11-22 13:43:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:43:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:43:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-22 13:43:49,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-22 13:43:49,921 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 150 flow. Second operand 7 states and 91 transitions. [2024-11-22 13:43:49,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 78 transitions, 478 flow [2024-11-22 13:43:49,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 466 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 13:43:49,922 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 198 flow [2024-11-22 13:43:49,923 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2024-11-22 13:43:49,924 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2024-11-22 13:43:49,925 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 198 flow [2024-11-22 13:43:49,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 13:43:49,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:49,925 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 13:43:49,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 13:43:50,128 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,SelfDestructingSolverStorable11 [2024-11-22 13:43:50,129 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 13:43:50,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:50,129 INFO L85 PathProgramCache]: Analyzing trace with hash -686636724, now seen corresponding path program 2 times [2024-11-22 13:43:50,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:50,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299885733] [2024-11-22 13:43:50,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:50,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:50,148 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:43:50,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:50,412 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 13:43:50,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:50,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299885733] [2024-11-22 13:43:50,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299885733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:50,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:50,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:43:50,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385204573] [2024-11-22 13:43:50,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:50,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:43:50,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:50,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:43:50,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:43:50,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:50,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 198 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:43:50,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:50,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:50,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:50,647 INFO L124 PetriNetUnfolderBase]: 388/697 cut-off events. [2024-11-22 13:43:50,647 INFO L125 PetriNetUnfolderBase]: For 1231/1231 co-relation queries the response was YES. [2024-11-22 13:43:50,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 697 events. 388/697 cut-off events. For 1231/1231 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3029 event pairs, 160 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 2273. Up to 362 conditions per place. [2024-11-22 13:43:50,651 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 55 selfloop transitions, 14 changer transitions 6/76 dead transitions. [2024-11-22 13:43:50,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 530 flow [2024-11-22 13:43:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:43:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:43:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-11-22 13:43:50,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2024-11-22 13:43:50,652 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 198 flow. Second operand 9 states and 95 transitions. [2024-11-22 13:43:50,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 530 flow [2024-11-22 13:43:50,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 499 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-22 13:43:50,654 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 286 flow [2024-11-22 13:43:50,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=286, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-11-22 13:43:50,655 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 31 predicate places. [2024-11-22 13:43:50,655 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 286 flow [2024-11-22 13:43:50,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:43:50,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:50,655 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 13:43:50,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 13:43:50,655 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 13:43:50,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:50,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1320390510, now seen corresponding path program 3 times [2024-11-22 13:43:50,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:50,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927587942] [2024-11-22 13:43:50,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:43:50,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:50,672 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:43:50,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:50,929 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 13:43:50,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:50,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927587942] [2024-11-22 13:43:50,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927587942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:50,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:50,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:43:50,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013787525] [2024-11-22 13:43:50,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:50,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:43:50,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:50,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:43:50,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:43:50,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:50,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 286 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:43:50,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:50,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:50,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:51,189 INFO L124 PetriNetUnfolderBase]: 424/764 cut-off events. [2024-11-22 13:43:51,189 INFO L125 PetriNetUnfolderBase]: For 1866/1866 co-relation queries the response was YES. [2024-11-22 13:43:51,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 764 events. 424/764 cut-off events. For 1866/1866 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3443 event pairs, 171 based on Foata normal form. 1/765 useless extension candidates. Maximal degree in co-relation 2702. Up to 370 conditions per place. [2024-11-22 13:43:51,194 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 65 selfloop transitions, 17 changer transitions 6/89 dead transitions. [2024-11-22 13:43:51,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 700 flow [2024-11-22 13:43:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:43:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:43:51,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-11-22 13:43:51,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-11-22 13:43:51,195 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 286 flow. Second operand 9 states and 98 transitions. [2024-11-22 13:43:51,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 700 flow [2024-11-22 13:43:51,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 89 transitions, 666 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-11-22 13:43:51,200 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 391 flow [2024-11-22 13:43:51,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=391, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2024-11-22 13:43:51,201 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-11-22 13:43:51,201 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 391 flow [2024-11-22 13:43:51,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:43:51,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:51,201 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 13:43:51,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 13:43:51,202 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 13:43:51,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:51,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2087679896, now seen corresponding path program 4 times [2024-11-22 13:43:51,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:51,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407876596] [2024-11-22 13:43:51,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:43:51,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:51,218 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:43:51,219 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:51,350 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 13:43:51,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:51,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407876596] [2024-11-22 13:43:51,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407876596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:51,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:51,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:43:51,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905464120] [2024-11-22 13:43:51,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:51,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:43:51,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:43:51,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:43:51,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:51,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 13:43:51,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:51,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:51,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:51,505 INFO L124 PetriNetUnfolderBase]: 419/759 cut-off events. [2024-11-22 13:43:51,505 INFO L125 PetriNetUnfolderBase]: For 2253/2253 co-relation queries the response was YES. [2024-11-22 13:43:51,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2855 conditions, 759 events. 419/759 cut-off events. For 2253/2253 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3439 event pairs, 90 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 2817. Up to 366 conditions per place. [2024-11-22 13:43:51,509 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 58 selfloop transitions, 20 changer transitions 6/85 dead transitions. [2024-11-22 13:43:51,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 710 flow [2024-11-22 13:43:51,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:43:51,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:43:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-22 13:43:51,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-22 13:43:51,510 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 391 flow. Second operand 7 states and 91 transitions. [2024-11-22 13:43:51,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 710 flow [2024-11-22 13:43:51,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 85 transitions, 658 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-22 13:43:51,514 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 438 flow [2024-11-22 13:43:51,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2024-11-22 13:43:51,515 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 40 predicate places. [2024-11-22 13:43:51,515 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 438 flow [2024-11-22 13:43:51,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 13:43:51,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:51,515 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 13:43:51,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 13:43:51,516 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 13:43:51,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash -425613040, now seen corresponding path program 5 times [2024-11-22 13:43:51,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:51,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796932520] [2024-11-22 13:43:51,516 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:43:51,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:51,535 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:51,536 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:51,984 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 13:43:51,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:51,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796932520] [2024-11-22 13:43:51,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796932520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:51,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076789105] [2024-11-22 13:43:51,985 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:43:51,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:51,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:51,987 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 13:43:51,988 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 13:43:52,048 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:52,048 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:52,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 13:43:52,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:52,132 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-22 13:43:52,132 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 39 treesize of output 24 [2024-11-22 13:43:52,153 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 13:43:52,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:43:52,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076789105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:52,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:43:52,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2024-11-22 13:43:52,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680001811] [2024-11-22 13:43:52,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:52,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:43:52,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:52,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:43:52,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:43:52,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:52,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 438 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 13:43:52,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:52,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:52,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:52,355 INFO L124 PetriNetUnfolderBase]: 409/736 cut-off events. [2024-11-22 13:43:52,355 INFO L125 PetriNetUnfolderBase]: For 2161/2161 co-relation queries the response was YES. [2024-11-22 13:43:52,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2806 conditions, 736 events. 409/736 cut-off events. For 2161/2161 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3300 event pairs, 166 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 2766. Up to 377 conditions per place. [2024-11-22 13:43:52,359 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 62 selfloop transitions, 16 changer transitions 6/85 dead transitions. [2024-11-22 13:43:52,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 771 flow [2024-11-22 13:43:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:43:52,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:43:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-22 13:43:52,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-11-22 13:43:52,360 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 438 flow. Second operand 7 states and 86 transitions. [2024-11-22 13:43:52,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 771 flow [2024-11-22 13:43:52,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 744 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-22 13:43:52,366 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 469 flow [2024-11-22 13:43:52,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2024-11-22 13:43:52,367 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2024-11-22 13:43:52,367 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 469 flow [2024-11-22 13:43:52,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 13:43:52,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:52,368 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 13:43:52,375 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 13:43:52,571 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,SelfDestructingSolverStorable15 [2024-11-22 13:43:52,572 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 13:43:52,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:52,572 INFO L85 PathProgramCache]: Analyzing trace with hash -645544756, now seen corresponding path program 6 times [2024-11-22 13:43:52,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:52,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004910216] [2024-11-22 13:43:52,573 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:43:52,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:52,588 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:43:52,588 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:52,802 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 13:43:52,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:52,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004910216] [2024-11-22 13:43:52,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004910216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:52,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:52,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:43:52,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551881461] [2024-11-22 13:43:52,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:52,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:43:52,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:52,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:43:52,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:43:52,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:52,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 469 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:43:52,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:52,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:52,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:53,031 INFO L124 PetriNetUnfolderBase]: 400/714 cut-off events. [2024-11-22 13:43:53,032 INFO L125 PetriNetUnfolderBase]: For 2306/2306 co-relation queries the response was YES. [2024-11-22 13:43:53,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 714 events. 400/714 cut-off events. For 2306/2306 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3123 event pairs, 163 based on Foata normal form. 1/714 useless extension candidates. Maximal degree in co-relation 2759. Up to 370 conditions per place. [2024-11-22 13:43:53,035 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 53 selfloop transitions, 23 changer transitions 6/83 dead transitions. [2024-11-22 13:43:53,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 777 flow [2024-11-22 13:43:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:43:53,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:43:53,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-11-22 13:43:53,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-11-22 13:43:53,036 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 469 flow. Second operand 9 states and 94 transitions. [2024-11-22 13:43:53,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 777 flow [2024-11-22 13:43:53,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 727 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-22 13:43:53,040 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 538 flow [2024-11-22 13:43:53,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=538, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2024-11-22 13:43:53,041 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 49 predicate places. [2024-11-22 13:43:53,041 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 538 flow [2024-11-22 13:43:53,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:43:53,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:53,041 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 13:43:53,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 13:43:53,042 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 13:43:53,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1309568190, now seen corresponding path program 7 times [2024-11-22 13:43:53,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:53,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788633632] [2024-11-22 13:43:53,042 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:43:53,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:43:53,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:53,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788633632] [2024-11-22 13:43:53,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788633632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:53,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057689538] [2024-11-22 13:43:53,375 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:43:53,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:53,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:53,379 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 13:43:53,380 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 13:43:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:53,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 13:43:53,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:53,517 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-22 13:43:53,518 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 39 treesize of output 24 [2024-11-22 13:43:53,539 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 13:43:53,539 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:43:53,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057689538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:53,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:43:53,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2024-11-22 13:43:53,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812514913] [2024-11-22 13:43:53,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:53,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:43:53,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:53,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:43:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:43:53,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:53,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 538 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 13:43:53,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:53,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:53,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:53,734 INFO L124 PetriNetUnfolderBase]: 516/922 cut-off events. [2024-11-22 13:43:53,734 INFO L125 PetriNetUnfolderBase]: For 3009/3009 co-relation queries the response was YES. [2024-11-22 13:43:53,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3574 conditions, 922 events. 516/922 cut-off events. For 3009/3009 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4252 event pairs, 203 based on Foata normal form. 1/923 useless extension candidates. Maximal degree in co-relation 3530. Up to 513 conditions per place. [2024-11-22 13:43:53,740 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 81 selfloop transitions, 19 changer transitions 6/107 dead transitions. [2024-11-22 13:43:53,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 107 transitions, 1119 flow [2024-11-22 13:43:53,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:43:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:43:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-22 13:43:53,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-11-22 13:43:53,741 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 538 flow. Second operand 7 states and 86 transitions. [2024-11-22 13:43:53,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 107 transitions, 1119 flow [2024-11-22 13:43:53,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 1055 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-22 13:43:53,746 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 597 flow [2024-11-22 13:43:53,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=597, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2024-11-22 13:43:53,746 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2024-11-22 13:43:53,746 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 597 flow [2024-11-22 13:43:53,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 13:43:53,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:53,747 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 13:43:53,754 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 13:43:53,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:53,951 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 13:43:53,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash 69621084, now seen corresponding path program 8 times [2024-11-22 13:43:53,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:53,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029379137] [2024-11-22 13:43:53,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:53,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:53,962 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:43:53,962 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:54,215 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 13:43:54,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:54,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029379137] [2024-11-22 13:43:54,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029379137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:54,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:54,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:43:54,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293201716] [2024-11-22 13:43:54,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:54,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:43:54,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:54,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:43:54,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:43:54,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:54,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 58 transitions, 597 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:43:54,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:54,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:54,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:54,499 INFO L124 PetriNetUnfolderBase]: 512/918 cut-off events. [2024-11-22 13:43:54,499 INFO L125 PetriNetUnfolderBase]: For 3456/3456 co-relation queries the response was YES. [2024-11-22 13:43:54,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3789 conditions, 918 events. 512/918 cut-off events. For 3456/3456 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4199 event pairs, 215 based on Foata normal form. 1/918 useless extension candidates. Maximal degree in co-relation 3743. Up to 506 conditions per place. [2024-11-22 13:43:54,505 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 66 selfloop transitions, 23 changer transitions 6/96 dead transitions. [2024-11-22 13:43:54,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 989 flow [2024-11-22 13:43:54,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:43:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:43:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-11-22 13:43:54,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-22 13:43:54,506 INFO L175 Difference]: Start difference. First operand has 79 places, 58 transitions, 597 flow. Second operand 9 states and 93 transitions. [2024-11-22 13:43:54,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 989 flow [2024-11-22 13:43:54,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 96 transitions, 938 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-22 13:43:54,512 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 718 flow [2024-11-22 13:43:54,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=718, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2024-11-22 13:43:54,513 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2024-11-22 13:43:54,513 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 718 flow [2024-11-22 13:43:54,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:43:54,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:54,513 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 13:43:54,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 13:43:54,514 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 13:43:54,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:54,514 INFO L85 PathProgramCache]: Analyzing trace with hash -333497234, now seen corresponding path program 9 times [2024-11-22 13:43:54,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:54,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938212631] [2024-11-22 13:43:54,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:43:54,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:54,525 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:43:54,526 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:54,734 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 13:43:54,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:54,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938212631] [2024-11-22 13:43:54,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938212631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:54,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:54,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:43:54,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249575702] [2024-11-22 13:43:54,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:54,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:43:54,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:54,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:43:54,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:43:54,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:54,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 718 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:43:54,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:54,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:54,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:54,987 INFO L124 PetriNetUnfolderBase]: 515/925 cut-off events. [2024-11-22 13:43:54,987 INFO L125 PetriNetUnfolderBase]: For 4324/4324 co-relation queries the response was YES. [2024-11-22 13:43:54,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3985 conditions, 925 events. 515/925 cut-off events. For 4324/4324 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4221 event pairs, 220 based on Foata normal form. 1/926 useless extension candidates. Maximal degree in co-relation 3935. Up to 506 conditions per place. [2024-11-22 13:43:54,993 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 67 selfloop transitions, 25 changer transitions 6/99 dead transitions. [2024-11-22 13:43:54,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 99 transitions, 1090 flow [2024-11-22 13:43:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:43:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:43:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-11-22 13:43:54,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-11-22 13:43:54,995 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 718 flow. Second operand 9 states and 94 transitions. [2024-11-22 13:43:54,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 99 transitions, 1090 flow [2024-11-22 13:43:55,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 1047 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-22 13:43:55,007 INFO L231 Difference]: Finished difference. Result has 95 places, 69 transitions, 812 flow [2024-11-22 13:43:55,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=812, PETRI_PLACES=95, PETRI_TRANSITIONS=69} [2024-11-22 13:43:55,008 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 69 predicate places. [2024-11-22 13:43:55,008 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 69 transitions, 812 flow [2024-11-22 13:43:55,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:43:55,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:55,008 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 13:43:55,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 13:43:55,008 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 13:43:55,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1590982928, now seen corresponding path program 10 times [2024-11-22 13:43:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:55,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169713896] [2024-11-22 13:43:55,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:43:55,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:55,022 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:43:55,022 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:55,116 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 13:43:55,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:55,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169713896] [2024-11-22 13:43:55,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169713896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:55,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:55,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:43:55,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099333796] [2024-11-22 13:43:55,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:55,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:43:55,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:55,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:43:55,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:43:55,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:55,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 69 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 13:43:55,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:55,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:55,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:55,295 INFO L124 PetriNetUnfolderBase]: 506/903 cut-off events. [2024-11-22 13:43:55,295 INFO L125 PetriNetUnfolderBase]: For 4519/4519 co-relation queries the response was YES. [2024-11-22 13:43:55,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 903 events. 506/903 cut-off events. For 4519/4519 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4085 event pairs, 121 based on Foata normal form. 1/904 useless extension candidates. Maximal degree in co-relation 3940. Up to 502 conditions per place. [2024-11-22 13:43:55,303 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 63 selfloop transitions, 25 changer transitions 6/95 dead transitions. [2024-11-22 13:43:55,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 1092 flow [2024-11-22 13:43:55,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:43:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:43:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-11-22 13:43:55,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-11-22 13:43:55,305 INFO L175 Difference]: Start difference. First operand has 95 places, 69 transitions, 812 flow. Second operand 8 states and 89 transitions. [2024-11-22 13:43:55,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 1092 flow [2024-11-22 13:43:55,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 95 transitions, 1043 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-22 13:43:55,315 INFO L231 Difference]: Finished difference. Result has 98 places, 69 transitions, 822 flow [2024-11-22 13:43:55,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=822, PETRI_PLACES=98, PETRI_TRANSITIONS=69} [2024-11-22 13:43:55,315 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 72 predicate places. [2024-11-22 13:43:55,315 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 69 transitions, 822 flow [2024-11-22 13:43:55,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 13:43:55,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:55,316 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 13:43:55,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 13:43:55,316 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 13:43:55,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:55,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1112436069, now seen corresponding path program 1 times [2024-11-22 13:43:55,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:55,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318730372] [2024-11-22 13:43:55,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:55,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:55,501 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 13:43:55,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:55,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318730372] [2024-11-22 13:43:55,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318730372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:55,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:55,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:43:55,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565383857] [2024-11-22 13:43:55,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:55,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:43:55,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:55,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:43:55,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:43:55,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:55,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 69 transitions, 822 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 13:43:55,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:55,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:55,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:55,747 INFO L124 PetriNetUnfolderBase]: 593/1051 cut-off events. [2024-11-22 13:43:55,747 INFO L125 PetriNetUnfolderBase]: For 5317/5317 co-relation queries the response was YES. [2024-11-22 13:43:55,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4686 conditions, 1051 events. 593/1051 cut-off events. For 5317/5317 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4955 event pairs, 247 based on Foata normal form. 12/1062 useless extension candidates. Maximal degree in co-relation 4631. Up to 523 conditions per place. [2024-11-22 13:43:55,755 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 80 selfloop transitions, 34 changer transitions 0/115 dead transitions. [2024-11-22 13:43:55,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 115 transitions, 1316 flow [2024-11-22 13:43:55,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:43:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:43:55,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-11-22 13:43:55,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-11-22 13:43:55,757 INFO L175 Difference]: Start difference. First operand has 98 places, 69 transitions, 822 flow. Second operand 9 states and 104 transitions. [2024-11-22 13:43:55,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 115 transitions, 1316 flow [2024-11-22 13:43:55,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 115 transitions, 1268 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-22 13:43:55,766 INFO L231 Difference]: Finished difference. Result has 101 places, 75 transitions, 948 flow [2024-11-22 13:43:55,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=948, PETRI_PLACES=101, PETRI_TRANSITIONS=75} [2024-11-22 13:43:55,767 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2024-11-22 13:43:55,767 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 75 transitions, 948 flow [2024-11-22 13:43:55,767 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 13:43:55,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:55,767 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 13:43:55,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 13:43:55,767 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 13:43:55,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:55,768 INFO L85 PathProgramCache]: Analyzing trace with hash -226551663, now seen corresponding path program 2 times [2024-11-22 13:43:55,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:55,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716045691] [2024-11-22 13:43:55,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:55,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:55,790 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:55,790 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:55,962 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 13:43:55,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:55,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716045691] [2024-11-22 13:43:55,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716045691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:55,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:55,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:43:55,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002419047] [2024-11-22 13:43:55,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:55,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:43:55,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:55,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:43:55,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:43:55,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:55,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 75 transitions, 948 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 13:43:55,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:55,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:55,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:56,203 INFO L124 PetriNetUnfolderBase]: 588/1046 cut-off events. [2024-11-22 13:43:56,203 INFO L125 PetriNetUnfolderBase]: For 5895/5895 co-relation queries the response was YES. [2024-11-22 13:43:56,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 1046 events. 588/1046 cut-off events. For 5895/5895 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5068 event pairs, 208 based on Foata normal form. 5/1051 useless extension candidates. Maximal degree in co-relation 4782. Up to 523 conditions per place. [2024-11-22 13:43:56,210 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 74 selfloop transitions, 30 changer transitions 10/115 dead transitions. [2024-11-22 13:43:56,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 115 transitions, 1335 flow [2024-11-22 13:43:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:43:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:43:56,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-11-22 13:43:56,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-22 13:43:56,210 INFO L175 Difference]: Start difference. First operand has 101 places, 75 transitions, 948 flow. Second operand 9 states and 93 transitions. [2024-11-22 13:43:56,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 115 transitions, 1335 flow [2024-11-22 13:43:56,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 115 transitions, 1284 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-22 13:43:56,219 INFO L231 Difference]: Finished difference. Result has 106 places, 73 transitions, 913 flow [2024-11-22 13:43:56,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=913, PETRI_PLACES=106, PETRI_TRANSITIONS=73} [2024-11-22 13:43:56,220 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 80 predicate places. [2024-11-22 13:43:56,220 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 73 transitions, 913 flow [2024-11-22 13:43:56,220 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 13:43:56,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:56,220 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 13:43:56,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 13:43:56,221 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 13:43:56,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:56,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1323625025, now seen corresponding path program 1 times [2024-11-22 13:43:56,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:56,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169158929] [2024-11-22 13:43:56,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:56,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:56,391 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 13:43:56,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:56,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169158929] [2024-11-22 13:43:56,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169158929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:56,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259065665] [2024-11-22 13:43:56,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:56,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:56,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:56,394 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 13:43:56,395 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 13:43:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:56,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 13:43:56,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:56,497 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-22 13:43:56,497 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 13:43:56,504 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 13:43:56,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:43:56,583 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-22 13:43:56,583 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 13:43:56,611 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 13:43:56,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259065665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:43:56,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:43:56,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-22 13:43:56,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591937786] [2024-11-22 13:43:56,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:43:56,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:43:56,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:56,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:43:56,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:43:56,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:56,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 73 transitions, 913 flow. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 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 13:43:56,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:56,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:56,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:56,935 INFO L124 PetriNetUnfolderBase]: 618/1094 cut-off events. [2024-11-22 13:43:56,935 INFO L125 PetriNetUnfolderBase]: For 5511/5511 co-relation queries the response was YES. [2024-11-22 13:43:56,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5043 conditions, 1094 events. 618/1094 cut-off events. For 5511/5511 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5211 event pairs, 166 based on Foata normal form. 14/1108 useless extension candidates. Maximal degree in co-relation 4986. Up to 486 conditions per place. [2024-11-22 13:43:56,941 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 89 selfloop transitions, 34 changer transitions 0/124 dead transitions. [2024-11-22 13:43:56,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 124 transitions, 1413 flow [2024-11-22 13:43:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:43:56,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:43:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-11-22 13:43:56,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-11-22 13:43:56,942 INFO L175 Difference]: Start difference. First operand has 106 places, 73 transitions, 913 flow. Second operand 10 states and 106 transitions. [2024-11-22 13:43:56,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 124 transitions, 1413 flow [2024-11-22 13:43:56,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 124 transitions, 1349 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-22 13:43:56,953 INFO L231 Difference]: Finished difference. Result has 107 places, 75 transitions, 947 flow [2024-11-22 13:43:56,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=947, PETRI_PLACES=107, PETRI_TRANSITIONS=75} [2024-11-22 13:43:56,953 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 81 predicate places. [2024-11-22 13:43:56,953 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 75 transitions, 947 flow [2024-11-22 13:43:56,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 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 13:43:56,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:56,954 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 13:43:56,963 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 13:43:57,157 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,SelfDestructingSolverStorable23 [2024-11-22 13:43:57,158 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 13:43:57,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:57,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1142605111, now seen corresponding path program 3 times [2024-11-22 13:43:57,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:57,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255664097] [2024-11-22 13:43:57,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:43:57,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:57,168 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:43:57,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:57,372 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 13:43:57,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:57,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255664097] [2024-11-22 13:43:57,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255664097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:57,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:57,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:43:57,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798236926] [2024-11-22 13:43:57,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:57,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:43:57,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:57,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:43:57,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:43:57,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:57,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 75 transitions, 947 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 13:43:57,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:57,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:57,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:57,605 INFO L124 PetriNetUnfolderBase]: 636/1124 cut-off events. [2024-11-22 13:43:57,605 INFO L125 PetriNetUnfolderBase]: For 6620/6620 co-relation queries the response was YES. [2024-11-22 13:43:57,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 1124 events. 636/1124 cut-off events. For 6620/6620 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5392 event pairs, 283 based on Foata normal form. 12/1136 useless extension candidates. Maximal degree in co-relation 5329. Up to 603 conditions per place. [2024-11-22 13:43:57,611 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 74 selfloop transitions, 36 changer transitions 0/111 dead transitions. [2024-11-22 13:43:57,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 1360 flow [2024-11-22 13:43:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:43:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:43:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-11-22 13:43:57,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-11-22 13:43:57,613 INFO L175 Difference]: Start difference. First operand has 107 places, 75 transitions, 947 flow. Second operand 9 states and 94 transitions. [2024-11-22 13:43:57,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 1360 flow [2024-11-22 13:43:57,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 111 transitions, 1280 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-22 13:43:57,623 INFO L231 Difference]: Finished difference. Result has 109 places, 78 transitions, 989 flow [2024-11-22 13:43:57,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=989, PETRI_PLACES=109, PETRI_TRANSITIONS=78} [2024-11-22 13:43:57,623 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 83 predicate places. [2024-11-22 13:43:57,623 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 78 transitions, 989 flow [2024-11-22 13:43:57,624 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 13:43:57,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:57,624 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 13:43:57,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 13:43:57,624 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 13:43:57,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:57,627 INFO L85 PathProgramCache]: Analyzing trace with hash 218597905, now seen corresponding path program 4 times [2024-11-22 13:43:57,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:57,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819073669] [2024-11-22 13:43:57,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:43:57,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:57,638 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:43:57,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:57,727 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 13:43:57,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:57,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819073669] [2024-11-22 13:43:57,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819073669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:57,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:57,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:43:57,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333061226] [2024-11-22 13:43:57,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:57,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:43:57,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:57,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:43:57,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:43:57,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:57,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 78 transitions, 989 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:43:57,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:57,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:57,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:57,934 INFO L124 PetriNetUnfolderBase]: 636/1129 cut-off events. [2024-11-22 13:43:57,934 INFO L125 PetriNetUnfolderBase]: For 5675/5675 co-relation queries the response was YES. [2024-11-22 13:43:57,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5374 conditions, 1129 events. 636/1129 cut-off events. For 5675/5675 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5476 event pairs, 277 based on Foata normal form. 5/1134 useless extension candidates. Maximal degree in co-relation 5317. Up to 610 conditions per place. [2024-11-22 13:43:57,941 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 73 selfloop transitions, 32 changer transitions 5/111 dead transitions. [2024-11-22 13:43:57,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 1356 flow [2024-11-22 13:43:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:43:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:43:57,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-22 13:43:57,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-11-22 13:43:57,943 INFO L175 Difference]: Start difference. First operand has 109 places, 78 transitions, 989 flow. Second operand 7 states and 86 transitions. [2024-11-22 13:43:57,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 1356 flow [2024-11-22 13:43:57,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 111 transitions, 1286 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-22 13:43:57,953 INFO L231 Difference]: Finished difference. Result has 110 places, 77 transitions, 970 flow [2024-11-22 13:43:57,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=970, PETRI_PLACES=110, PETRI_TRANSITIONS=77} [2024-11-22 13:43:57,953 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 84 predicate places. [2024-11-22 13:43:57,953 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 77 transitions, 970 flow [2024-11-22 13:43:57,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:43:57,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:57,953 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 13:43:57,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 13:43:57,954 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 13:43:57,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:57,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1511752797, now seen corresponding path program 2 times [2024-11-22 13:43:57,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:57,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752998589] [2024-11-22 13:43:57,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:57,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:57,965 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:57,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:58,144 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 13:43:58,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:58,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752998589] [2024-11-22 13:43:58,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752998589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:58,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582005109] [2024-11-22 13:43:58,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:58,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:58,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:58,147 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 13:43:58,148 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 13:43:58,210 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:58,211 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:58,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 13:43:58,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:58,298 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-22 13:43:58,298 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 13:43:58,308 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 13:43:58,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:43:58,384 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-22 13:43:58,385 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 13:43:58,398 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 13:43:58,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582005109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:43:58,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:43:58,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-11-22 13:43:58,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765146150] [2024-11-22 13:43:58,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:43:58,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:43:58,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:58,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:43:58,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:43:58,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:58,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 77 transitions, 970 flow. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 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 13:43:58,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:58,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:58,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:58,802 INFO L124 PetriNetUnfolderBase]: 925/1638 cut-off events. [2024-11-22 13:43:58,802 INFO L125 PetriNetUnfolderBase]: For 7043/7043 co-relation queries the response was YES. [2024-11-22 13:43:58,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7139 conditions, 1638 events. 925/1638 cut-off events. For 7043/7043 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8633 event pairs, 323 based on Foata normal form. 14/1651 useless extension candidates. Maximal degree in co-relation 7083. Up to 555 conditions per place. [2024-11-22 13:43:58,809 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 108 selfloop transitions, 42 changer transitions 0/151 dead transitions. [2024-11-22 13:43:58,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 151 transitions, 1659 flow [2024-11-22 13:43:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:43:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:43:58,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-11-22 13:43:58,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-11-22 13:43:58,810 INFO L175 Difference]: Start difference. First operand has 110 places, 77 transitions, 970 flow. Second operand 12 states and 139 transitions. [2024-11-22 13:43:58,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 151 transitions, 1659 flow [2024-11-22 13:43:58,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 151 transitions, 1589 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-22 13:43:58,820 INFO L231 Difference]: Finished difference. Result has 118 places, 85 transitions, 1108 flow [2024-11-22 13:43:58,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1108, PETRI_PLACES=118, PETRI_TRANSITIONS=85} [2024-11-22 13:43:58,821 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2024-11-22 13:43:58,821 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 85 transitions, 1108 flow [2024-11-22 13:43:58,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 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 13:43:58,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:58,821 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 13:43:58,827 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 13:43:59,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-22 13:43:59,022 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 13:43:59,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:59,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2049108817, now seen corresponding path program 5 times [2024-11-22 13:43:59,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:59,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544128450] [2024-11-22 13:43:59,022 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:43:59,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:59,037 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:59,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:59,221 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 13:43:59,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:59,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544128450] [2024-11-22 13:43:59,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544128450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:59,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592949192] [2024-11-22 13:43:59,222 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:43:59,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:59,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:59,224 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 13:43:59,225 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 13:43:59,283 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:59,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:59,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 13:43:59,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:59,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:43:59,419 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 28 treesize of output 24 [2024-11-22 13:43:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:43:59,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:43:59,551 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-22 13:43:59,551 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 44 treesize of output 77 [2024-11-22 13:43:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:43:59,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592949192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:43:59,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:43:59,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 27 [2024-11-22 13:43:59,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464397638] [2024-11-22 13:43:59,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:43:59,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 13:43:59,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:59,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 13:43:59,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2024-11-22 13:43:59,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:43:59,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 85 transitions, 1108 flow. Second operand has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 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 13:43:59,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:59,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:43:59,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:01,038 INFO L124 PetriNetUnfolderBase]: 2838/5078 cut-off events. [2024-11-22 13:44:01,038 INFO L125 PetriNetUnfolderBase]: For 26386/26386 co-relation queries the response was YES. [2024-11-22 13:44:01,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22999 conditions, 5078 events. 2838/5078 cut-off events. For 26386/26386 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 34112 event pairs, 821 based on Foata normal form. 25/5103 useless extension candidates. Maximal degree in co-relation 22025. Up to 1118 conditions per place. [2024-11-22 13:44:01,069 INFO L140 encePairwiseOnDemand]: 14/28 looper letters, 255 selfloop transitions, 148 changer transitions 10/414 dead transitions. [2024-11-22 13:44:01,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 414 transitions, 4958 flow [2024-11-22 13:44:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-22 13:44:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-22 13:44:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 374 transitions. [2024-11-22 13:44:01,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.361003861003861 [2024-11-22 13:44:01,072 INFO L175 Difference]: Start difference. First operand has 118 places, 85 transitions, 1108 flow. Second operand 37 states and 374 transitions. [2024-11-22 13:44:01,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 414 transitions, 4958 flow [2024-11-22 13:44:01,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 414 transitions, 4714 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-11-22 13:44:01,134 INFO L231 Difference]: Finished difference. Result has 161 places, 194 transitions, 3056 flow [2024-11-22 13:44:01,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3056, PETRI_PLACES=161, PETRI_TRANSITIONS=194} [2024-11-22 13:44:01,135 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 135 predicate places. [2024-11-22 13:44:01,135 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 194 transitions, 3056 flow [2024-11-22 13:44:01,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 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 13:44:01,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:01,135 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 13:44:01,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 13:44:01,336 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,SelfDestructingSolverStorable27 [2024-11-22 13:44:01,336 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 13:44:01,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1978792003, now seen corresponding path program 3 times [2024-11-22 13:44:01,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:01,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277712265] [2024-11-22 13:44:01,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:44:01,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:01,345 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:44:01,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:01,519 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 13:44:01,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:01,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277712265] [2024-11-22 13:44:01,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277712265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:01,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375658244] [2024-11-22 13:44:01,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:44:01,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:01,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:01,522 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 13:44:01,523 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 13:44:01,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:44:01,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:01,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 13:44:01,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:01,642 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:44:01,642 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 13:44:01,662 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 13:44:01,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:01,739 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-22 13:44:01,740 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 13:44:01,753 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 13:44:01,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375658244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:01,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:01,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 18 [2024-11-22 13:44:01,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944643531] [2024-11-22 13:44:01,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:01,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 13:44:01,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:01,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 13:44:01,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-22 13:44:01,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:01,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 194 transitions, 3056 flow. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 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 13:44:01,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:01,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:01,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:02,507 INFO L124 PetriNetUnfolderBase]: 3110/5605 cut-off events. [2024-11-22 13:44:02,507 INFO L125 PetriNetUnfolderBase]: For 33458/33458 co-relation queries the response was YES. [2024-11-22 13:44:02,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26763 conditions, 5605 events. 3110/5605 cut-off events. For 33458/33458 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 38576 event pairs, 1227 based on Foata normal form. 63/5666 useless extension candidates. Maximal degree in co-relation 25687. Up to 2615 conditions per place. [2024-11-22 13:44:02,599 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 141 selfloop transitions, 131 changer transitions 0/273 dead transitions. [2024-11-22 13:44:02,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 273 transitions, 4072 flow [2024-11-22 13:44:02,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:44:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:44:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 154 transitions. [2024-11-22 13:44:02,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-11-22 13:44:02,602 INFO L175 Difference]: Start difference. First operand has 161 places, 194 transitions, 3056 flow. Second operand 15 states and 154 transitions. [2024-11-22 13:44:02,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 273 transitions, 4072 flow [2024-11-22 13:44:02,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 273 transitions, 3857 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-11-22 13:44:02,729 INFO L231 Difference]: Finished difference. Result has 171 places, 204 transitions, 3284 flow [2024-11-22 13:44:02,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3284, PETRI_PLACES=171, PETRI_TRANSITIONS=204} [2024-11-22 13:44:02,730 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 145 predicate places. [2024-11-22 13:44:02,730 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 204 transitions, 3284 flow [2024-11-22 13:44:02,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 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 13:44:02,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:02,730 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 13:44:02,736 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 13:44:02,934 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 13:44:02,935 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 13:44:02,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:02,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1292645215, now seen corresponding path program 4 times [2024-11-22 13:44:02,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:02,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527954889] [2024-11-22 13:44:02,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:44:02,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:02,944 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:44:02,948 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:03,027 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 13:44:03,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:03,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527954889] [2024-11-22 13:44:03,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527954889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:03,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:03,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:44:03,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135842921] [2024-11-22 13:44:03,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:03,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:44:03,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:03,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:44:03,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:44:03,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:03,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 204 transitions, 3284 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:44:03,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:03,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:03,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:03,727 INFO L124 PetriNetUnfolderBase]: 2981/5323 cut-off events. [2024-11-22 13:44:03,728 INFO L125 PetriNetUnfolderBase]: For 36545/36545 co-relation queries the response was YES. [2024-11-22 13:44:03,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26866 conditions, 5323 events. 2981/5323 cut-off events. For 36545/36545 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 35849 event pairs, 1572 based on Foata normal form. 12/5335 useless extension candidates. Maximal degree in co-relation 26152. Up to 3747 conditions per place. [2024-11-22 13:44:03,767 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 116 selfloop transitions, 107 changer transitions 5/229 dead transitions. [2024-11-22 13:44:03,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 229 transitions, 3847 flow [2024-11-22 13:44:03,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:44:03,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:44:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-22 13:44:03,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-11-22 13:44:03,768 INFO L175 Difference]: Start difference. First operand has 171 places, 204 transitions, 3284 flow. Second operand 7 states and 80 transitions. [2024-11-22 13:44:03,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 229 transitions, 3847 flow [2024-11-22 13:44:03,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 229 transitions, 3670 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-22 13:44:03,980 INFO L231 Difference]: Finished difference. Result has 170 places, 198 transitions, 3181 flow [2024-11-22 13:44:03,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3181, PETRI_PLACES=170, PETRI_TRANSITIONS=198} [2024-11-22 13:44:03,981 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 144 predicate places. [2024-11-22 13:44:03,981 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 198 transitions, 3181 flow [2024-11-22 13:44:03,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:44:03,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:03,981 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 13:44:03,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-22 13:44:03,982 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 13:44:03,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:03,982 INFO L85 PathProgramCache]: Analyzing trace with hash -600675833, now seen corresponding path program 5 times [2024-11-22 13:44:03,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:03,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780267572] [2024-11-22 13:44:03,983 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:44:03,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:03,999 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:03,999 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:04,203 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 13:44:04,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:04,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780267572] [2024-11-22 13:44:04,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780267572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:04,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683971187] [2024-11-22 13:44:04,204 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:44:04,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:04,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:04,206 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 13:44:04,208 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 13:44:04,279 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:04,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:04,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 13:44:04,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:04,451 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-22 13:44:04,452 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 25 treesize of output 9 [2024-11-22 13:44:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:44:04,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:04,590 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-22 13:44:04,590 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 44 treesize of output 77 [2024-11-22 13:44:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:44:04,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683971187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:04,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:04,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 27 [2024-11-22 13:44:04,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570418747] [2024-11-22 13:44:04,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:04,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 13:44:04,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:04,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 13:44:04,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2024-11-22 13:44:04,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:04,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 198 transitions, 3181 flow. Second operand has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 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 13:44:04,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:04,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:04,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:06,796 INFO L124 PetriNetUnfolderBase]: 4157/7385 cut-off events. [2024-11-22 13:44:06,796 INFO L125 PetriNetUnfolderBase]: For 51378/51378 co-relation queries the response was YES. [2024-11-22 13:44:06,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36189 conditions, 7385 events. 4157/7385 cut-off events. For 51378/51378 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 52948 event pairs, 941 based on Foata normal form. 166/7551 useless extension candidates. Maximal degree in co-relation 35281. Up to 1272 conditions per place. [2024-11-22 13:44:06,848 INFO L140 encePairwiseOnDemand]: 11/28 looper letters, 377 selfloop transitions, 233 changer transitions 17/628 dead transitions. [2024-11-22 13:44:06,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 628 transitions, 8064 flow [2024-11-22 13:44:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-22 13:44:06,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-22 13:44:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 515 transitions. [2024-11-22 13:44:06,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4277408637873754 [2024-11-22 13:44:06,849 INFO L175 Difference]: Start difference. First operand has 170 places, 198 transitions, 3181 flow. Second operand 43 states and 515 transitions. [2024-11-22 13:44:06,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 628 transitions, 8064 flow [2024-11-22 13:44:07,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 628 transitions, 7850 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 13:44:07,078 INFO L231 Difference]: Finished difference. Result has 227 places, 346 transitions, 5769 flow [2024-11-22 13:44:07,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2967, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5769, PETRI_PLACES=227, PETRI_TRANSITIONS=346} [2024-11-22 13:44:07,078 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 201 predicate places. [2024-11-22 13:44:07,078 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 346 transitions, 5769 flow [2024-11-22 13:44:07,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 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 13:44:07,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:07,079 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 13:44:07,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-22 13:44:07,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:07,279 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 13:44:07,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:07,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1823758037, now seen corresponding path program 6 times [2024-11-22 13:44:07,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:07,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777335260] [2024-11-22 13:44:07,280 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:44:07,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:07,291 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:44:07,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:07,478 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 13:44:07,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:07,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777335260] [2024-11-22 13:44:07,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777335260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:07,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035390118] [2024-11-22 13:44:07,479 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:44:07,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:07,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:07,481 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 13:44:07,482 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 13:44:07,543 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:44:07,543 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:07,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 13:44:07,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:07,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:44:07,585 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 21 [2024-11-22 13:44:07,599 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 13:44:07,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:07,657 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-22 13:44:07,658 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 13:44:07,681 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 13:44:07,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035390118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:07,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:07,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-11-22 13:44:07,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346257398] [2024-11-22 13:44:07,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:07,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:44:07,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:07,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:44:07,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:44:07,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:07,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 346 transitions, 5769 flow. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 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 13:44:07,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:07,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:07,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:08,987 INFO L124 PetriNetUnfolderBase]: 4480/7996 cut-off events. [2024-11-22 13:44:08,987 INFO L125 PetriNetUnfolderBase]: For 112578/112578 co-relation queries the response was YES. [2024-11-22 13:44:09,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49766 conditions, 7996 events. 4480/7996 cut-off events. For 112578/112578 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 58467 event pairs, 2284 based on Foata normal form. 54/8050 useless extension candidates. Maximal degree in co-relation 48563. Up to 5812 conditions per place. [2024-11-22 13:44:09,057 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 309 selfloop transitions, 139 changer transitions 0/449 dead transitions. [2024-11-22 13:44:09,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 449 transitions, 7948 flow [2024-11-22 13:44:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:44:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:44:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 146 transitions. [2024-11-22 13:44:09,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37244897959183676 [2024-11-22 13:44:09,058 INFO L175 Difference]: Start difference. First operand has 227 places, 346 transitions, 5769 flow. Second operand 14 states and 146 transitions. [2024-11-22 13:44:09,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 449 transitions, 7948 flow [2024-11-22 13:44:09,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 449 transitions, 7503 flow, removed 179 selfloop flow, removed 12 redundant places. [2024-11-22 13:44:09,751 INFO L231 Difference]: Finished difference. Result has 234 places, 389 transitions, 6539 flow [2024-11-22 13:44:09,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5336, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6539, PETRI_PLACES=234, PETRI_TRANSITIONS=389} [2024-11-22 13:44:09,752 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 208 predicate places. [2024-11-22 13:44:09,752 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 389 transitions, 6539 flow [2024-11-22 13:44:09,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 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 13:44:09,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:09,752 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 13:44:09,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 13:44:09,952 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,SelfDestructingSolverStorable31 [2024-11-22 13:44:09,952 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 13:44:09,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1975366923, now seen corresponding path program 6 times [2024-11-22 13:44:09,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:09,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967684232] [2024-11-22 13:44:09,953 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:44:09,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:09,962 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:44:09,962 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:10,155 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 13:44:10,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:10,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967684232] [2024-11-22 13:44:10,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967684232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:10,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:10,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:44:10,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498270314] [2024-11-22 13:44:10,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:10,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:44:10,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:10,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:44:10,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:44:10,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:10,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 389 transitions, 6539 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 13:44:10,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:10,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:10,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:11,588 INFO L124 PetriNetUnfolderBase]: 4480/8008 cut-off events. [2024-11-22 13:44:11,588 INFO L125 PetriNetUnfolderBase]: For 117960/117960 co-relation queries the response was YES. [2024-11-22 13:44:11,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49880 conditions, 8008 events. 4480/8008 cut-off events. For 117960/117960 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 58572 event pairs, 2400 based on Foata normal form. 12/8020 useless extension candidates. Maximal degree in co-relation 48663. Up to 5812 conditions per place. [2024-11-22 13:44:11,647 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 282 selfloop transitions, 128 changer transitions 4/415 dead transitions. [2024-11-22 13:44:11,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 415 transitions, 7605 flow [2024-11-22 13:44:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:44:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:44:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-11-22 13:44:11,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-11-22 13:44:11,648 INFO L175 Difference]: Start difference. First operand has 234 places, 389 transitions, 6539 flow. Second operand 9 states and 91 transitions. [2024-11-22 13:44:11,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 415 transitions, 7605 flow [2024-11-22 13:44:12,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 415 transitions, 7386 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-11-22 13:44:12,184 INFO L231 Difference]: Finished difference. Result has 237 places, 390 transitions, 6635 flow [2024-11-22 13:44:12,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6322, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6635, PETRI_PLACES=237, PETRI_TRANSITIONS=390} [2024-11-22 13:44:12,185 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 211 predicate places. [2024-11-22 13:44:12,185 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 390 transitions, 6635 flow [2024-11-22 13:44:12,185 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 13:44:12,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:12,185 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 13:44:12,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-22 13:44:12,185 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 13:44:12,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:12,186 INFO L85 PathProgramCache]: Analyzing trace with hash -872369295, now seen corresponding path program 7 times [2024-11-22 13:44:12,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:12,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003113715] [2024-11-22 13:44:12,186 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:44:12,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:44:12,457 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 13:44:12,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:12,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003113715] [2024-11-22 13:44:12,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003113715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:12,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:12,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:44:12,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31003068] [2024-11-22 13:44:12,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:12,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:44:12,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:12,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:44:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:44:12,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:12,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 390 transitions, 6635 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 13:44:12,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:12,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:12,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:13,952 INFO L124 PetriNetUnfolderBase]: 4462/7978 cut-off events. [2024-11-22 13:44:13,953 INFO L125 PetriNetUnfolderBase]: For 119196/119196 co-relation queries the response was YES. [2024-11-22 13:44:14,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49520 conditions, 7978 events. 4462/7978 cut-off events. For 119196/119196 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 58415 event pairs, 2391 based on Foata normal form. 12/7990 useless extension candidates. Maximal degree in co-relation 48862. Up to 5800 conditions per place. [2024-11-22 13:44:14,020 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 287 selfloop transitions, 116 changer transitions 7/411 dead transitions. [2024-11-22 13:44:14,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 411 transitions, 7546 flow [2024-11-22 13:44:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:44:14,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:44:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-11-22 13:44:14,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3531746031746032 [2024-11-22 13:44:14,021 INFO L175 Difference]: Start difference. First operand has 237 places, 390 transitions, 6635 flow. Second operand 9 states and 89 transitions. [2024-11-22 13:44:14,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 411 transitions, 7546 flow [2024-11-22 13:44:14,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 411 transitions, 7320 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-22 13:44:14,608 INFO L231 Difference]: Finished difference. Result has 239 places, 382 transitions, 6450 flow [2024-11-22 13:44:14,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6324, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6450, PETRI_PLACES=239, PETRI_TRANSITIONS=382} [2024-11-22 13:44:14,609 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 213 predicate places. [2024-11-22 13:44:14,609 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 382 transitions, 6450 flow [2024-11-22 13:44:14,609 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 13:44:14,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:14,609 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 13:44:14,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-22 13:44:14,609 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 13:44:14,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:14,610 INFO L85 PathProgramCache]: Analyzing trace with hash 646669503, now seen corresponding path program 8 times [2024-11-22 13:44:14,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:14,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16240393] [2024-11-22 13:44:14,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:44:14,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:14,620 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:14,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:14,786 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 13:44:14,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:14,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16240393] [2024-11-22 13:44:14,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16240393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:14,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:14,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:44:14,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440637938] [2024-11-22 13:44:14,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:14,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:44:14,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:14,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:44:14,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:44:14,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:14,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 382 transitions, 6450 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 13:44:14,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:14,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:14,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:16,355 INFO L124 PetriNetUnfolderBase]: 4419/7894 cut-off events. [2024-11-22 13:44:16,355 INFO L125 PetriNetUnfolderBase]: For 118277/118277 co-relation queries the response was YES. [2024-11-22 13:44:16,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48999 conditions, 7894 events. 4419/7894 cut-off events. For 118277/118277 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 57630 event pairs, 2380 based on Foata normal form. 12/7906 useless extension candidates. Maximal degree in co-relation 48547. Up to 5759 conditions per place. [2024-11-22 13:44:16,414 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 281 selfloop transitions, 116 changer transitions 4/402 dead transitions. [2024-11-22 13:44:16,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 402 transitions, 7342 flow [2024-11-22 13:44:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:44:16,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:44:16,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-11-22 13:44:16,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3531746031746032 [2024-11-22 13:44:16,415 INFO L175 Difference]: Start difference. First operand has 239 places, 382 transitions, 6450 flow. Second operand 9 states and 89 transitions. [2024-11-22 13:44:16,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 402 transitions, 7342 flow [2024-11-22 13:44:16,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 402 transitions, 6996 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-11-22 13:44:16,935 INFO L231 Difference]: Finished difference. Result has 233 places, 377 transitions, 6219 flow [2024-11-22 13:44:16,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6020, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6219, PETRI_PLACES=233, PETRI_TRANSITIONS=377} [2024-11-22 13:44:16,936 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 207 predicate places. [2024-11-22 13:44:16,936 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 377 transitions, 6219 flow [2024-11-22 13:44:16,936 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 13:44:16,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:16,936 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 13:44:16,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-22 13:44:16,936 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 13:44:16,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:16,937 INFO L85 PathProgramCache]: Analyzing trace with hash -68770085, now seen corresponding path program 7 times [2024-11-22 13:44:16,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:16,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759522259] [2024-11-22 13:44:16,937 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:44:16,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:44:17,090 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 13:44:17,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:17,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759522259] [2024-11-22 13:44:17,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759522259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:17,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:17,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:44:17,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496111363] [2024-11-22 13:44:17,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:17,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:44:17,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:17,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:44:17,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:44:17,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:17,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 377 transitions, 6219 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 13:44:17,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:17,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:17,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:18,368 INFO L124 PetriNetUnfolderBase]: 4393/7848 cut-off events. [2024-11-22 13:44:18,368 INFO L125 PetriNetUnfolderBase]: For 115967/115967 co-relation queries the response was YES. [2024-11-22 13:44:18,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48548 conditions, 7848 events. 4393/7848 cut-off events. For 115967/115967 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 57195 event pairs, 2373 based on Foata normal form. 15/7863 useless extension candidates. Maximal degree in co-relation 47335. Up to 5759 conditions per place. [2024-11-22 13:44:18,440 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 278 selfloop transitions, 113 changer transitions 8/400 dead transitions. [2024-11-22 13:44:18,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 400 transitions, 7194 flow [2024-11-22 13:44:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:44:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:44:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-22 13:44:18,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3412698412698413 [2024-11-22 13:44:18,441 INFO L175 Difference]: Start difference. First operand has 233 places, 377 transitions, 6219 flow. Second operand 9 states and 86 transitions. [2024-11-22 13:44:18,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 400 transitions, 7194 flow [2024-11-22 13:44:19,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 400 transitions, 6924 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-22 13:44:19,030 INFO L231 Difference]: Finished difference. Result has 230 places, 373 transitions, 6097 flow [2024-11-22 13:44:19,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5924, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6097, PETRI_PLACES=230, PETRI_TRANSITIONS=373} [2024-11-22 13:44:19,031 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 204 predicate places. [2024-11-22 13:44:19,031 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 373 transitions, 6097 flow [2024-11-22 13:44:19,031 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 13:44:19,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:19,031 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 13:44:19,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-22 13:44:19,031 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 13:44:19,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash -811065505, now seen corresponding path program 8 times [2024-11-22 13:44:19,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:19,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408056700] [2024-11-22 13:44:19,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:44:19,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:19,051 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:19,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:19,280 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 13:44:19,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:19,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408056700] [2024-11-22 13:44:19,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408056700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:19,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84940167] [2024-11-22 13:44:19,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:44:19,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:19,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:19,282 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 13:44:19,283 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 13:44:19,344 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:19,345 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:19,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 13:44:19,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:19,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:44:19,402 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 13:44:19,415 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 13:44:19,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:19,463 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-22 13:44:19,464 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 13:44:19,483 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 13:44:19,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84940167] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:19,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:44:19,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2024-11-22 13:44:19,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271265511] [2024-11-22 13:44:19,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:19,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:44:19,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:19,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:44:19,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:44:19,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:19,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 373 transitions, 6097 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:44:19,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:19,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:19,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:20,704 INFO L124 PetriNetUnfolderBase]: 4253/7601 cut-off events. [2024-11-22 13:44:20,705 INFO L125 PetriNetUnfolderBase]: For 114598/114598 co-relation queries the response was YES. [2024-11-22 13:44:20,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47077 conditions, 7601 events. 4253/7601 cut-off events. For 114598/114598 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 55111 event pairs, 2256 based on Foata normal form. 54/7655 useless extension candidates. Maximal degree in co-relation 45863. Up to 5772 conditions per place. [2024-11-22 13:44:20,774 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 296 selfloop transitions, 107 changer transitions 0/404 dead transitions. [2024-11-22 13:44:20,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 404 transitions, 7162 flow [2024-11-22 13:44:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:44:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:44:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-22 13:44:20,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-22 13:44:20,775 INFO L175 Difference]: Start difference. First operand has 230 places, 373 transitions, 6097 flow. Second operand 7 states and 91 transitions. [2024-11-22 13:44:20,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 404 transitions, 7162 flow [2024-11-22 13:44:21,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 404 transitions, 6802 flow, removed 35 selfloop flow, removed 12 redundant places. [2024-11-22 13:44:21,345 INFO L231 Difference]: Finished difference. Result has 222 places, 367 transitions, 5898 flow [2024-11-22 13:44:21,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5667, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5898, PETRI_PLACES=222, PETRI_TRANSITIONS=367} [2024-11-22 13:44:21,346 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 196 predicate places. [2024-11-22 13:44:21,346 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 367 transitions, 5898 flow [2024-11-22 13:44:21,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:44:21,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:21,346 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 13:44:21,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 13:44:21,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:21,547 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 13:44:21,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:21,547 INFO L85 PathProgramCache]: Analyzing trace with hash -664447033, now seen corresponding path program 9 times [2024-11-22 13:44:21,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:21,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399625878] [2024-11-22 13:44:21,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:44:21,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:21,556 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:44:21,557 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:21,802 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 13:44:21,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:21,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399625878] [2024-11-22 13:44:21,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399625878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:21,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:21,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:44:21,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884296065] [2024-11-22 13:44:21,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:21,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:44:21,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:21,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:44:21,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:44:21,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:21,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 367 transitions, 5898 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 13:44:21,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:21,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:21,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:23,391 INFO L124 PetriNetUnfolderBase]: 4592/8183 cut-off events. [2024-11-22 13:44:23,391 INFO L125 PetriNetUnfolderBase]: For 116545/116545 co-relation queries the response was YES. [2024-11-22 13:44:23,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50523 conditions, 8183 events. 4592/8183 cut-off events. For 116545/116545 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 59879 event pairs, 2009 based on Foata normal form. 36/8219 useless extension candidates. Maximal degree in co-relation 48682. Up to 5286 conditions per place. [2024-11-22 13:44:23,457 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 353 selfloop transitions, 135 changer transitions 0/489 dead transitions. [2024-11-22 13:44:23,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 489 transitions, 8519 flow [2024-11-22 13:44:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:44:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:44:23,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-11-22 13:44:23,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-22 13:44:23,458 INFO L175 Difference]: Start difference. First operand has 222 places, 367 transitions, 5898 flow. Second operand 9 states and 102 transitions. [2024-11-22 13:44:23,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 489 transitions, 8519 flow [2024-11-22 13:44:24,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 489 transitions, 8294 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 13:44:24,012 INFO L231 Difference]: Finished difference. Result has 230 places, 389 transitions, 6557 flow [2024-11-22 13:44:24,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5707, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6557, PETRI_PLACES=230, PETRI_TRANSITIONS=389} [2024-11-22 13:44:24,013 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 204 predicate places. [2024-11-22 13:44:24,013 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 389 transitions, 6557 flow [2024-11-22 13:44:24,013 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 13:44:24,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:24,013 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 13:44:24,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-22 13:44:24,013 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 13:44:24,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash 592592389, now seen corresponding path program 10 times [2024-11-22 13:44:24,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:24,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840127990] [2024-11-22 13:44:24,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:44:24,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:24,022 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:44:24,022 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:24,093 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 13:44:24,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:24,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840127990] [2024-11-22 13:44:24,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840127990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:24,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:24,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:44:24,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888144570] [2024-11-22 13:44:24,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:24,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:44:24,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:44:24,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:44:24,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:24,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 389 transitions, 6557 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:44:24,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:24,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:24,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:25,537 INFO L124 PetriNetUnfolderBase]: 4880/8687 cut-off events. [2024-11-22 13:44:25,537 INFO L125 PetriNetUnfolderBase]: For 140675/140675 co-relation queries the response was YES. [2024-11-22 13:44:25,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55828 conditions, 8687 events. 4880/8687 cut-off events. For 140675/140675 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 64050 event pairs, 2317 based on Foata normal form. 36/8723 useless extension candidates. Maximal degree in co-relation 53262. Up to 5797 conditions per place. [2024-11-22 13:44:25,631 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 343 selfloop transitions, 129 changer transitions 0/473 dead transitions. [2024-11-22 13:44:25,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 473 transitions, 8610 flow [2024-11-22 13:44:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:44:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:44:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-11-22 13:44:25,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 13:44:25,632 INFO L175 Difference]: Start difference. First operand has 230 places, 389 transitions, 6557 flow. Second operand 7 states and 98 transitions. [2024-11-22 13:44:25,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 473 transitions, 8610 flow [2024-11-22 13:44:26,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 473 transitions, 8431 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-22 13:44:26,514 INFO L231 Difference]: Finished difference. Result has 235 places, 405 transitions, 7070 flow [2024-11-22 13:44:26,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6380, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7070, PETRI_PLACES=235, PETRI_TRANSITIONS=405} [2024-11-22 13:44:26,515 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 209 predicate places. [2024-11-22 13:44:26,515 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 405 transitions, 7070 flow [2024-11-22 13:44:26,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:44:26,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:26,515 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 13:44:26,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-22 13:44:26,516 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 13:44:26,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash -698998731, now seen corresponding path program 11 times [2024-11-22 13:44:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068039247] [2024-11-22 13:44:26,516 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:44:26,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:26,530 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:26,531 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:26,702 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 13:44:26,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:26,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068039247] [2024-11-22 13:44:26,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068039247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:26,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887856307] [2024-11-22 13:44:26,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:44:26,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:26,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:26,706 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 13:44:26,708 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 13:44:26,776 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:26,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:26,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 13:44:26,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:26,861 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-22 13:44:26,862 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 13:44:26,871 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 13:44:26,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:26,935 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-22 13:44:26,936 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 13:44:26,946 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 13:44:26,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887856307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:26,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:26,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-22 13:44:26,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469632011] [2024-11-22 13:44:26,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:26,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:44:26,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:26,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:44:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:44:26,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:26,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 405 transitions, 7070 flow. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 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 13:44:26,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:26,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:26,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:28,510 INFO L124 PetriNetUnfolderBase]: 4745/8431 cut-off events. [2024-11-22 13:44:28,510 INFO L125 PetriNetUnfolderBase]: For 129840/129840 co-relation queries the response was YES. [2024-11-22 13:44:28,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54862 conditions, 8431 events. 4745/8431 cut-off events. For 129840/129840 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 62201 event pairs, 676 based on Foata normal form. 40/8471 useless extension candidates. Maximal degree in co-relation 51891. Up to 5436 conditions per place. [2024-11-22 13:44:28,582 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 374 selfloop transitions, 135 changer transitions 3/513 dead transitions. [2024-11-22 13:44:28,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 513 transitions, 9412 flow [2024-11-22 13:44:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:44:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 13:44:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-11-22 13:44:28,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-11-22 13:44:28,583 INFO L175 Difference]: Start difference. First operand has 235 places, 405 transitions, 7070 flow. Second operand 11 states and 104 transitions. [2024-11-22 13:44:28,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 513 transitions, 9412 flow [2024-11-22 13:44:29,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 513 transitions, 9231 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-11-22 13:44:29,271 INFO L231 Difference]: Finished difference. Result has 246 places, 411 transitions, 7329 flow [2024-11-22 13:44:29,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6889, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7329, PETRI_PLACES=246, PETRI_TRANSITIONS=411} [2024-11-22 13:44:29,272 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 220 predicate places. [2024-11-22 13:44:29,272 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 411 transitions, 7329 flow [2024-11-22 13:44:29,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 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 13:44:29,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:29,272 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 13:44:29,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-22 13:44:29,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-22 13:44:29,476 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 13:44:29,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash 188378157, now seen corresponding path program 9 times [2024-11-22 13:44:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190031923] [2024-11-22 13:44:29,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:44:29,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:29,487 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:44:29,487 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:29,633 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 13:44:29,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:29,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190031923] [2024-11-22 13:44:29,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190031923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:29,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:29,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:44:29,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881076227] [2024-11-22 13:44:29,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:29,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:44:29,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:44:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:44:29,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:29,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 411 transitions, 7329 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 13:44:29,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:29,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:29,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:31,402 INFO L124 PetriNetUnfolderBase]: 4877/8655 cut-off events. [2024-11-22 13:44:31,402 INFO L125 PetriNetUnfolderBase]: For 144832/144832 co-relation queries the response was YES. [2024-11-22 13:44:31,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57566 conditions, 8655 events. 4877/8655 cut-off events. For 144832/144832 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 63476 event pairs, 2272 based on Foata normal form. 56/8711 useless extension candidates. Maximal degree in co-relation 55886. Up to 6071 conditions per place. [2024-11-22 13:44:31,484 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 353 selfloop transitions, 144 changer transitions 0/498 dead transitions. [2024-11-22 13:44:31,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 498 transitions, 9379 flow [2024-11-22 13:44:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:44:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:44:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-11-22 13:44:31,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-22 13:44:31,485 INFO L175 Difference]: Start difference. First operand has 246 places, 411 transitions, 7329 flow. Second operand 9 states and 102 transitions. [2024-11-22 13:44:31,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 498 transitions, 9379 flow [2024-11-22 13:44:32,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 498 transitions, 8991 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-11-22 13:44:32,338 INFO L231 Difference]: Finished difference. Result has 249 places, 427 transitions, 7655 flow [2024-11-22 13:44:32,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6981, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7655, PETRI_PLACES=249, PETRI_TRANSITIONS=427} [2024-11-22 13:44:32,338 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 223 predicate places. [2024-11-22 13:44:32,338 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 427 transitions, 7655 flow [2024-11-22 13:44:32,338 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 13:44:32,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:32,339 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 13:44:32,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-22 13:44:32,339 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 13:44:32,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash 644991095, now seen corresponding path program 12 times [2024-11-22 13:44:32,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:32,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814668237] [2024-11-22 13:44:32,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:44:32,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:32,352 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:44:32,352 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:32,520 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 13:44:32,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:32,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814668237] [2024-11-22 13:44:32,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814668237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:32,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:32,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:44:32,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985332573] [2024-11-22 13:44:32,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:32,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:44:32,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:32,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:44:32,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:44:32,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:32,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 427 transitions, 7655 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 13:44:32,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:32,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:32,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:34,137 INFO L124 PetriNetUnfolderBase]: 4952/8772 cut-off events. [2024-11-22 13:44:34,138 INFO L125 PetriNetUnfolderBase]: For 145786/145786 co-relation queries the response was YES. [2024-11-22 13:44:34,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58452 conditions, 8772 events. 4952/8772 cut-off events. For 145786/145786 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 64300 event pairs, 2389 based on Foata normal form. 36/8808 useless extension candidates. Maximal degree in co-relation 56582. Up to 6107 conditions per place. [2024-11-22 13:44:34,238 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 339 selfloop transitions, 149 changer transitions 0/489 dead transitions. [2024-11-22 13:44:34,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 489 transitions, 9442 flow [2024-11-22 13:44:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:44:34,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:44:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-11-22 13:44:34,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-11-22 13:44:34,239 INFO L175 Difference]: Start difference. First operand has 249 places, 427 transitions, 7655 flow. Second operand 9 states and 96 transitions. [2024-11-22 13:44:34,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 489 transitions, 9442 flow [2024-11-22 13:44:35,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 489 transitions, 9040 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-11-22 13:44:35,063 INFO L231 Difference]: Finished difference. Result has 254 places, 442 transitions, 7965 flow [2024-11-22 13:44:35,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7279, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7965, PETRI_PLACES=254, PETRI_TRANSITIONS=442} [2024-11-22 13:44:35,063 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 228 predicate places. [2024-11-22 13:44:35,063 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 442 transitions, 7965 flow [2024-11-22 13:44:35,064 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 13:44:35,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:35,064 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 13:44:35,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-22 13:44:35,064 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 13:44:35,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1839890753, now seen corresponding path program 13 times [2024-11-22 13:44:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:35,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127256414] [2024-11-22 13:44:35,064 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:44:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:44:35,284 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 13:44:35,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:35,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127256414] [2024-11-22 13:44:35,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127256414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:35,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:35,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:44:35,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934996970] [2024-11-22 13:44:35,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:35,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:44:35,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:44:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:44:35,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:35,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 442 transitions, 7965 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 13:44:35,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:35,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:35,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:36,884 INFO L124 PetriNetUnfolderBase]: 4916/8736 cut-off events. [2024-11-22 13:44:36,885 INFO L125 PetriNetUnfolderBase]: For 139133/139133 co-relation queries the response was YES. [2024-11-22 13:44:36,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57415 conditions, 8736 events. 4916/8736 cut-off events. For 139133/139133 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 64224 event pairs, 2366 based on Foata normal form. 36/8772 useless extension candidates. Maximal degree in co-relation 54554. Up to 6071 conditions per place. [2024-11-22 13:44:36,975 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 330 selfloop transitions, 160 changer transitions 0/491 dead transitions. [2024-11-22 13:44:36,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 491 transitions, 9453 flow [2024-11-22 13:44:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:44:36,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:44:36,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-11-22 13:44:36,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-22 13:44:36,976 INFO L175 Difference]: Start difference. First operand has 254 places, 442 transitions, 7965 flow. Second operand 9 states and 93 transitions. [2024-11-22 13:44:36,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 491 transitions, 9453 flow [2024-11-22 13:44:37,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 491 transitions, 9110 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-11-22 13:44:37,853 INFO L231 Difference]: Finished difference. Result has 259 places, 447 transitions, 8111 flow [2024-11-22 13:44:37,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7626, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8111, PETRI_PLACES=259, PETRI_TRANSITIONS=447} [2024-11-22 13:44:37,854 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 233 predicate places. [2024-11-22 13:44:37,854 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 447 transitions, 8111 flow [2024-11-22 13:44:37,854 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 13:44:37,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:37,854 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 13:44:37,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-22 13:44:37,855 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 13:44:37,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:37,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1242327753, now seen corresponding path program 14 times [2024-11-22 13:44:37,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:37,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480237405] [2024-11-22 13:44:37,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:44:37,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:37,865 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:37,866 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:38,023 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 13:44:38,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:38,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480237405] [2024-11-22 13:44:38,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480237405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:38,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:38,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:44:38,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140657659] [2024-11-22 13:44:38,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:38,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:44:38,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:38,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:44:38,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:44:38,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:38,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 447 transitions, 8111 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 13:44:38,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:38,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:38,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:39,885 INFO L124 PetriNetUnfolderBase]: 4880/8700 cut-off events. [2024-11-22 13:44:39,885 INFO L125 PetriNetUnfolderBase]: For 134179/134179 co-relation queries the response was YES. [2024-11-22 13:44:39,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56824 conditions, 8700 events. 4880/8700 cut-off events. For 134179/134179 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 64343 event pairs, 2137 based on Foata normal form. 36/8736 useless extension candidates. Maximal degree in co-relation 55406. Up to 6035 conditions per place. [2024-11-22 13:44:39,975 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 361 selfloop transitions, 155 changer transitions 3/520 dead transitions. [2024-11-22 13:44:39,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 520 transitions, 9933 flow [2024-11-22 13:44:39,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:44:39,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:44:39,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-11-22 13:44:39,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-11-22 13:44:39,976 INFO L175 Difference]: Start difference. First operand has 259 places, 447 transitions, 8111 flow. Second operand 9 states and 92 transitions. [2024-11-22 13:44:39,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 520 transitions, 9933 flow [2024-11-22 13:44:40,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 520 transitions, 9556 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-11-22 13:44:40,632 INFO L231 Difference]: Finished difference. Result has 263 places, 450 transitions, 8105 flow [2024-11-22 13:44:40,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7722, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8105, PETRI_PLACES=263, PETRI_TRANSITIONS=450} [2024-11-22 13:44:40,632 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 237 predicate places. [2024-11-22 13:44:40,632 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 450 transitions, 8105 flow [2024-11-22 13:44:40,632 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 13:44:40,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:40,632 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 13:44:40,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-22 13:44:40,633 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 13:44:40,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:40,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1413500475, now seen corresponding path program 15 times [2024-11-22 13:44:40,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:40,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334145582] [2024-11-22 13:44:40,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:44:40,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:40,644 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:44:40,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:40,908 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 13:44:40,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:40,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334145582] [2024-11-22 13:44:40,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334145582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:40,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:40,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:44:40,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078860026] [2024-11-22 13:44:40,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:40,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:44:40,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:40,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:44:40,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:44:40,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:40,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 450 transitions, 8105 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 13:44:40,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:40,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:40,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:42,404 INFO L124 PetriNetUnfolderBase]: 4862/8670 cut-off events. [2024-11-22 13:44:42,405 INFO L125 PetriNetUnfolderBase]: For 131167/131167 co-relation queries the response was YES. [2024-11-22 13:44:42,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56795 conditions, 8670 events. 4862/8670 cut-off events. For 131167/131167 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 63995 event pairs, 2331 based on Foata normal form. 15/8685 useless extension candidates. Maximal degree in co-relation 55779. Up to 6050 conditions per place. [2024-11-22 13:44:42,498 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 323 selfloop transitions, 157 changer transitions 7/488 dead transitions. [2024-11-22 13:44:42,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 488 transitions, 9369 flow [2024-11-22 13:44:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:44:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:44:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-22 13:44:42,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-11-22 13:44:42,499 INFO L175 Difference]: Start difference. First operand has 263 places, 450 transitions, 8105 flow. Second operand 9 states and 87 transitions. [2024-11-22 13:44:42,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 488 transitions, 9369 flow [2024-11-22 13:44:43,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 488 transitions, 8964 flow, removed 33 selfloop flow, removed 15 redundant places. [2024-11-22 13:44:43,377 INFO L231 Difference]: Finished difference. Result has 257 places, 447 transitions, 7953 flow [2024-11-22 13:44:43,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7701, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7953, PETRI_PLACES=257, PETRI_TRANSITIONS=447} [2024-11-22 13:44:43,377 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 231 predicate places. [2024-11-22 13:44:43,377 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 447 transitions, 7953 flow [2024-11-22 13:44:43,378 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 13:44:43,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:43,378 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 13:44:43,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-22 13:44:43,378 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 13:44:43,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:43,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2065828863, now seen corresponding path program 16 times [2024-11-22 13:44:43,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:43,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598540377] [2024-11-22 13:44:43,379 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:44:43,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:43,400 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:44:43,400 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:43,502 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 13:44:43,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:43,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598540377] [2024-11-22 13:44:43,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598540377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:43,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:43,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:44:43,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971978568] [2024-11-22 13:44:43,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:43,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:44:43,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:43,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:44:43,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:44:43,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:43,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 447 transitions, 7953 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:44:43,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:43,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:43,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:45,181 INFO L124 PetriNetUnfolderBase]: 4841/8634 cut-off events. [2024-11-22 13:44:45,181 INFO L125 PetriNetUnfolderBase]: For 131289/131289 co-relation queries the response was YES. [2024-11-22 13:44:45,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56021 conditions, 8634 events. 4841/8634 cut-off events. For 131289/131289 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 63733 event pairs, 2329 based on Foata normal form. 15/8649 useless extension candidates. Maximal degree in co-relation 55058. Up to 6063 conditions per place. [2024-11-22 13:44:45,259 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 325 selfloop transitions, 152 changer transitions 6/484 dead transitions. [2024-11-22 13:44:45,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 484 transitions, 9195 flow [2024-11-22 13:44:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:44:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:44:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-22 13:44:45,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2024-11-22 13:44:45,260 INFO L175 Difference]: Start difference. First operand has 257 places, 447 transitions, 7953 flow. Second operand 7 states and 83 transitions. [2024-11-22 13:44:45,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 484 transitions, 9195 flow [2024-11-22 13:44:45,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 484 transitions, 8835 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-22 13:44:45,940 INFO L231 Difference]: Finished difference. Result has 251 places, 444 transitions, 7852 flow [2024-11-22 13:44:45,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7593, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7852, PETRI_PLACES=251, PETRI_TRANSITIONS=444} [2024-11-22 13:44:45,940 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 225 predicate places. [2024-11-22 13:44:45,940 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 444 transitions, 7852 flow [2024-11-22 13:44:45,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:44:45,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:45,940 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 13:44:45,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-22 13:44:45,941 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 13:44:45,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:45,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1046423135, now seen corresponding path program 17 times [2024-11-22 13:44:45,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:45,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571907681] [2024-11-22 13:44:45,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:44:45,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:45,953 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:45,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:46,098 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 13:44:46,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:46,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571907681] [2024-11-22 13:44:46,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571907681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:46,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814584716] [2024-11-22 13:44:46,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:44:46,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:46,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:46,099 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 13:44:46,100 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 13:44:46,166 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:46,166 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:46,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 13:44:46,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:46,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:44:46,195 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 13:44:46,204 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 13:44:46,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:44:46,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814584716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:46,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:44:46,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-11-22 13:44:46,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938252707] [2024-11-22 13:44:46,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:46,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:44:46,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:44:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:44:46,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:46,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 444 transitions, 7852 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:44:46,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:46,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:46,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:47,688 INFO L124 PetriNetUnfolderBase]: 4730/8400 cut-off events. [2024-11-22 13:44:47,688 INFO L125 PetriNetUnfolderBase]: For 127680/127680 co-relation queries the response was YES. [2024-11-22 13:44:47,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54682 conditions, 8400 events. 4730/8400 cut-off events. For 127680/127680 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 61336 event pairs, 2254 based on Foata normal form. 15/8415 useless extension candidates. Maximal degree in co-relation 52774. Up to 5856 conditions per place. [2024-11-22 13:44:47,777 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 333 selfloop transitions, 139 changer transitions 6/479 dead transitions. [2024-11-22 13:44:47,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 479 transitions, 9061 flow [2024-11-22 13:44:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:44:47,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:44:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-22 13:44:47,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2024-11-22 13:44:47,778 INFO L175 Difference]: Start difference. First operand has 251 places, 444 transitions, 7852 flow. Second operand 7 states and 83 transitions. [2024-11-22 13:44:47,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 479 transitions, 9061 flow [2024-11-22 13:44:48,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 479 transitions, 8799 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 13:44:48,539 INFO L231 Difference]: Finished difference. Result has 252 places, 440 transitions, 7790 flow [2024-11-22 13:44:48,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7569, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7790, PETRI_PLACES=252, PETRI_TRANSITIONS=440} [2024-11-22 13:44:48,540 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 226 predicate places. [2024-11-22 13:44:48,540 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 440 transitions, 7790 flow [2024-11-22 13:44:48,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:44:48,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:48,541 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 13:44:48,547 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 13:44:48,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-22 13:44:48,741 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 13:44:48,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:48,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1957792603, now seen corresponding path program 10 times [2024-11-22 13:44:48,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:48,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958835840] [2024-11-22 13:44:48,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:44:48,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:48,752 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:44:48,752 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:48,853 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 13:44:48,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:48,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958835840] [2024-11-22 13:44:48,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958835840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:48,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:48,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:44:48,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715446181] [2024-11-22 13:44:48,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:48,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:44:48,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:44:48,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:44:48,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:48,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 440 transitions, 7790 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:44:48,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:48,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:48,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:50,368 INFO L124 PetriNetUnfolderBase]: 4817/8537 cut-off events. [2024-11-22 13:44:50,368 INFO L125 PetriNetUnfolderBase]: For 138428/138428 co-relation queries the response was YES. [2024-11-22 13:44:50,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56040 conditions, 8537 events. 4817/8537 cut-off events. For 138428/138428 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 62336 event pairs, 2248 based on Foata normal form. 56/8593 useless extension candidates. Maximal degree in co-relation 54234. Up to 5921 conditions per place. [2024-11-22 13:44:50,443 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 340 selfloop transitions, 155 changer transitions 0/496 dead transitions. [2024-11-22 13:44:50,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 496 transitions, 9380 flow [2024-11-22 13:44:50,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:44:50,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:44:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-11-22 13:44:50,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44387755102040816 [2024-11-22 13:44:50,444 INFO L175 Difference]: Start difference. First operand has 252 places, 440 transitions, 7790 flow. Second operand 7 states and 87 transitions. [2024-11-22 13:44:50,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 496 transitions, 9380 flow [2024-11-22 13:44:51,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 496 transitions, 9126 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-22 13:44:51,126 INFO L231 Difference]: Finished difference. Result has 255 places, 447 transitions, 8032 flow [2024-11-22 13:44:51,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7550, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8032, PETRI_PLACES=255, PETRI_TRANSITIONS=447} [2024-11-22 13:44:51,127 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 229 predicate places. [2024-11-22 13:44:51,127 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 447 transitions, 8032 flow [2024-11-22 13:44:51,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:44:51,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:51,127 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 13:44:51,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-22 13:44:51,127 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 13:44:51,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:51,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1324482161, now seen corresponding path program 11 times [2024-11-22 13:44:51,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:51,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336467415] [2024-11-22 13:44:51,128 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:44:51,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:51,136 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:51,137 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:51,277 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 13:44:51,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:51,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336467415] [2024-11-22 13:44:51,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336467415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:51,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865455029] [2024-11-22 13:44:51,277 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:44:51,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:51,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:51,279 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 13:44:51,280 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 13:44:51,352 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:51,352 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:51,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 13:44:51,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:51,461 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 13:44:51,462 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:44:51,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865455029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:51,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:44:51,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2024-11-22 13:44:51,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542787268] [2024-11-22 13:44:51,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:51,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:44:51,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:51,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:44:51,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:44:51,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-22 13:44:51,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 447 transitions, 8032 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 13:44:51,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:51,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-22 13:44:51,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:53,157 INFO L124 PetriNetUnfolderBase]: 4910/8695 cut-off events. [2024-11-22 13:44:53,157 INFO L125 PetriNetUnfolderBase]: For 144168/144168 co-relation queries the response was YES. [2024-11-22 13:44:53,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57712 conditions, 8695 events. 4910/8695 cut-off events. For 144168/144168 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 63692 event pairs, 2256 based on Foata normal form. 56/8751 useless extension candidates. Maximal degree in co-relation 55959. Up to 5973 conditions per place.