./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-3061b6d-m [2024-11-19 01:44:30,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:44:30,561 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:44:30,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:44:30,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:44:30,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:44:30,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:44:30,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:44:30,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:44:30,611 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:44:30,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:44:30,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:44:30,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:44:30,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:44:30,613 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:44:30,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:44:30,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:44:30,614 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:44:30,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:44:30,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:44:30,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:44:30,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:44:30,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:44:30,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:44:30,619 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:44:30,619 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:44:30,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:44:30,620 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:44:30,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:44:30,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:44:30,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:44:30,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:44:30,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:44:30,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:44:30,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:44:30,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:44:30,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:44:30,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:44:30,623 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:44:30,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:44:30,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:44:30,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:44:30,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2024-11-19 01:44:30,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:44:30,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:44:30,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:44:30,908 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:44:30,909 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:44:30,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-19 01:44:32,356 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:44:32,533 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:44:32,534 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-19 01:44:32,541 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcb3c3c3d/33332153bbf24c99b01b246f828bce4b/FLAGdf87d6646 [2024-11-19 01:44:32,554 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcb3c3c3d/33332153bbf24c99b01b246f828bce4b [2024-11-19 01:44:32,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:44:32,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:44:32,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:44:32,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:44:32,564 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:44:32,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e75d8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32, skipping insertion in model container [2024-11-19 01:44:32,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,586 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:44:32,793 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] [2024-11-19 01:44:32,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:44:32,812 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:44:32,830 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] [2024-11-19 01:44:32,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:44:32,851 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:44:32,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32 WrapperNode [2024-11-19 01:44:32,852 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:44:32,853 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:44:32,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:44:32,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:44:32,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,865 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,891 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 193 [2024-11-19 01:44:32,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:44:32,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:44:32,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:44:32,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:44:32,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,913 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,931 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]. [2024-11-19 01:44:32,931 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,931 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,957 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:44:32,965 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:44:32,965 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:44:32,965 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:44:32,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (1/1) ... [2024-11-19 01:44:32,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:44:32,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:33,000 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) [2024-11-19 01:44:33,002 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 [2024-11-19 01:44:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:44:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:44:33,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:44:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:44:33,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:44:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:44:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:44:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:44:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:44:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:44:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:44:33,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:44:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:44:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:44:33,062 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:44:33,193 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:44:33,195 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:44:33,625 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:44:33,626 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:44:33,916 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:44:33,916 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:44:33,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:44:33 BoogieIcfgContainer [2024-11-19 01:44:33,916 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:44:33,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:44:33,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:44:33,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:44:33,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:44:32" (1/3) ... [2024-11-19 01:44:33,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c982e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:44:33, skipping insertion in model container [2024-11-19 01:44:33,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:32" (2/3) ... [2024-11-19 01:44:33,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c982e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:44:33, skipping insertion in model container [2024-11-19 01:44:33,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:44:33" (3/3) ... [2024-11-19 01:44:33,928 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2024-11-19 01:44:33,943 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:44:33,943 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:44:33,943 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:44:33,997 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:44:34,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 70 flow [2024-11-19 01:44:34,067 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-19 01:44:34,067 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:44:34,072 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. [2024-11-19 01:44:34,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 70 flow [2024-11-19 01:44:34,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 25 transitions, 62 flow [2024-11-19 01:44:34,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:44:34,096 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;@3ee70b7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:44:34,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 01:44:34,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:44:34,111 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2024-11-19 01:44:34,111 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:44:34,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:34,112 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:34,113 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:34,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:34,118 INFO L85 PathProgramCache]: Analyzing trace with hash 245197459, now seen corresponding path program 1 times [2024-11-19 01:44:34,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:34,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643407983] [2024-11-19 01:44:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:34,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:34,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:34,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643407983] [2024-11-19 01:44:34,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643407983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:34,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:34,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:44:34,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466847845] [2024-11-19 01:44:34,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:34,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:34,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:34,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:44:34,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:34,967 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) [2024-11-19 01:44:34,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:34,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:34,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:35,375 INFO L124 PetriNetUnfolderBase]: 288/485 cut-off events. [2024-11-19 01:44:35,377 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-19 01:44:35,380 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. [2024-11-19 01:44:35,386 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 64 selfloop transitions, 10 changer transitions 1/76 dead transitions. [2024-11-19 01:44:35,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 76 transitions, 344 flow [2024-11-19 01:44:35,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:44:35,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:44:35,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-11-19 01:44:35,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-11-19 01:44:35,405 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 8 states and 100 transitions. [2024-11-19 01:44:35,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 76 transitions, 344 flow [2024-11-19 01:44:35,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 76 transitions, 316 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:44:35,411 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 123 flow [2024-11-19 01:44:35,413 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} [2024-11-19 01:44:35,417 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-11-19 01:44:35,418 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 123 flow [2024-11-19 01:44:35,418 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) [2024-11-19 01:44:35,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:35,419 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:35,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:44:35,420 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:35,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1983090722, now seen corresponding path program 1 times [2024-11-19 01:44:35,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:35,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369115129] [2024-11-19 01:44:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:35,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:35,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:35,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369115129] [2024-11-19 01:44:35,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369115129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:35,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089239400] [2024-11-19 01:44:35,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:35,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:35,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:35,675 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) [2024-11-19 01:44:35,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:44:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:35,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 01:44:35,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:35,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:36,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089239400] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:36,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:44:36,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2024-11-19 01:44:36,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572500946] [2024-11-19 01:44:36,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:36,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:44:36,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:36,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:44:36,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:44:36,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:36,156 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) [2024-11-19 01:44:36,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:36,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:36,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:36,557 INFO L124 PetriNetUnfolderBase]: 617/1023 cut-off events. [2024-11-19 01:44:36,557 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-19 01:44:36,560 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. [2024-11-19 01:44:36,565 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 92 selfloop transitions, 12 changer transitions 1/106 dead transitions. [2024-11-19 01:44:36,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 106 transitions, 540 flow [2024-11-19 01:44:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:44:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:44:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-11-19 01:44:36,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-19 01:44:36,568 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 123 flow. Second operand 8 states and 119 transitions. [2024-11-19 01:44:36,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 106 transitions, 540 flow [2024-11-19 01:44:36,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 106 transitions, 536 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-19 01:44:36,571 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 210 flow [2024-11-19 01:44:36,571 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} [2024-11-19 01:44:36,572 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2024-11-19 01:44:36,572 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 210 flow [2024-11-19 01:44:36,572 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) [2024-11-19 01:44:36,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:36,572 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:36,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 01:44:36,775 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 [2024-11-19 01:44:36,775 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:36,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:36,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1744370288, now seen corresponding path program 1 times [2024-11-19 01:44:36,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:36,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520983895] [2024-11-19 01:44:36,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:36,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:36,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:36,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520983895] [2024-11-19 01:44:36,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520983895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:36,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:36,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:44:36,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069450101] [2024-11-19 01:44:36,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:36,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:44:36,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:36,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:44:36,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:44:36,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:36,871 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) [2024-11-19 01:44:36,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:36,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:36,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:37,082 INFO L124 PetriNetUnfolderBase]: 487/833 cut-off events. [2024-11-19 01:44:37,083 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2024-11-19 01:44:37,084 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. [2024-11-19 01:44:37,087 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 62 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2024-11-19 01:44:37,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 447 flow [2024-11-19 01:44:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:44:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:44:37,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-11-19 01:44:37,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-11-19 01:44:37,091 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 210 flow. Second operand 6 states and 74 transitions. [2024-11-19 01:44:37,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 447 flow [2024-11-19 01:44:37,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 420 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-19 01:44:37,100 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 214 flow [2024-11-19 01:44:37,100 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} [2024-11-19 01:44:37,101 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2024-11-19 01:44:37,101 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 214 flow [2024-11-19 01:44:37,104 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) [2024-11-19 01:44:37,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:37,104 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:37,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:44:37,104 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:37,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash 574455480, now seen corresponding path program 1 times [2024-11-19 01:44:37,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:37,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494693760] [2024-11-19 01:44:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:37,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:37,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:37,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494693760] [2024-11-19 01:44:37,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494693760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:37,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:37,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:44:37,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704245107] [2024-11-19 01:44:37,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:37,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:44:37,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:37,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:44:37,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:44:37,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:37,208 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) [2024-11-19 01:44:37,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:37,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:37,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:37,358 INFO L124 PetriNetUnfolderBase]: 416/723 cut-off events. [2024-11-19 01:44:37,358 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2024-11-19 01:44:37,361 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. [2024-11-19 01:44:37,364 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 52 selfloop transitions, 6 changer transitions 2/61 dead transitions. [2024-11-19 01:44:37,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 400 flow [2024-11-19 01:44:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:44:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:44:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-11-19 01:44:37,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-11-19 01:44:37,366 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 214 flow. Second operand 6 states and 67 transitions. [2024-11-19 01:44:37,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 400 flow [2024-11-19 01:44:37,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 384 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-19 01:44:37,373 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 220 flow [2024-11-19 01:44:37,373 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} [2024-11-19 01:44:37,374 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 24 predicate places. [2024-11-19 01:44:37,375 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 220 flow [2024-11-19 01:44:37,375 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) [2024-11-19 01:44:37,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:37,375 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:37,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:44:37,376 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:37,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash 603243545, now seen corresponding path program 1 times [2024-11-19 01:44:37,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:37,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442295504] [2024-11-19 01:44:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:37,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:37,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:37,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442295504] [2024-11-19 01:44:37,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442295504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:37,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599526560] [2024-11-19 01:44:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:37,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:37,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:37,563 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) [2024-11-19 01:44:37,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:44:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:37,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 01:44:37,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:37,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:37,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599526560] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:37,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:44:37,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2024-11-19 01:44:37,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650232358] [2024-11-19 01:44:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:37,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:37,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:37,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:37,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:44:37,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:37,927 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) [2024-11-19 01:44:37,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:37,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:37,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:38,194 INFO L124 PetriNetUnfolderBase]: 391/674 cut-off events. [2024-11-19 01:44:38,195 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-11-19 01:44:38,197 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. [2024-11-19 01:44:38,203 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 50 selfloop transitions, 5 changer transitions 11/67 dead transitions. [2024-11-19 01:44:38,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 421 flow [2024-11-19 01:44:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:44:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:44:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-11-19 01:44:38,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-11-19 01:44:38,206 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 220 flow. Second operand 7 states and 77 transitions. [2024-11-19 01:44:38,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 421 flow [2024-11-19 01:44:38,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 408 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-19 01:44:38,210 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 205 flow [2024-11-19 01:44:38,210 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} [2024-11-19 01:44:38,210 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-11-19 01:44:38,211 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 205 flow [2024-11-19 01:44:38,211 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) [2024-11-19 01:44:38,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:38,211 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:38,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:44:38,415 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 [2024-11-19 01:44:38,416 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:38,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:38,416 INFO L85 PathProgramCache]: Analyzing trace with hash -915834458, now seen corresponding path program 2 times [2024-11-19 01:44:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:38,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557270212] [2024-11-19 01:44:38,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:38,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:38,437 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:44:38,438 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:38,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:38,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557270212] [2024-11-19 01:44:38,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557270212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:38,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:38,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:44:38,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050491970] [2024-11-19 01:44:38,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:38,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:38,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:38,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:38,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:44:38,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:38,600 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) [2024-11-19 01:44:38,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:38,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:38,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:38,862 INFO L124 PetriNetUnfolderBase]: 388/672 cut-off events. [2024-11-19 01:44:38,862 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-19 01:44:38,864 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. [2024-11-19 01:44:38,866 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 67 selfloop transitions, 18 changer transitions 1/87 dead transitions. [2024-11-19 01:44:38,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 87 transitions, 523 flow [2024-11-19 01:44:38,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:38,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-11-19 01:44:38,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2024-11-19 01:44:38,868 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 205 flow. Second operand 9 states and 107 transitions. [2024-11-19 01:44:38,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 87 transitions, 523 flow [2024-11-19 01:44:38,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 504 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-19 01:44:38,871 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 288 flow [2024-11-19 01:44:38,871 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} [2024-11-19 01:44:38,872 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 31 predicate places. [2024-11-19 01:44:38,872 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 288 flow [2024-11-19 01:44:38,872 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) [2024-11-19 01:44:38,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:38,873 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:38,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:44:38,873 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:38,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:38,873 INFO L85 PathProgramCache]: Analyzing trace with hash -133012491, now seen corresponding path program 2 times [2024-11-19 01:44:38,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:38,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228746809] [2024-11-19 01:44:38,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:38,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:38,887 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:44:38,888 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:39,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:39,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228746809] [2024-11-19 01:44:39,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228746809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:39,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:39,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:44:39,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616146509] [2024-11-19 01:44:39,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:39,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:39,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:39,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:39,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:44:39,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:39,042 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) [2024-11-19 01:44:39,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:39,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:39,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:39,260 INFO L124 PetriNetUnfolderBase]: 388/670 cut-off events. [2024-11-19 01:44:39,260 INFO L125 PetriNetUnfolderBase]: For 840/840 co-relation queries the response was YES. [2024-11-19 01:44:39,262 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. [2024-11-19 01:44:39,265 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 38 selfloop transitions, 6 changer transitions 20/65 dead transitions. [2024-11-19 01:44:39,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 467 flow [2024-11-19 01:44:39,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 78 transitions. [2024-11-19 01:44:39,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30952380952380953 [2024-11-19 01:44:39,266 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 288 flow. Second operand 9 states and 78 transitions. [2024-11-19 01:44:39,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 467 flow [2024-11-19 01:44:39,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 453 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-19 01:44:39,270 INFO L231 Difference]: Finished difference. Result has 65 places, 42 transitions, 255 flow [2024-11-19 01:44:39,270 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} [2024-11-19 01:44:39,270 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-11-19 01:44:39,271 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 42 transitions, 255 flow [2024-11-19 01:44:39,271 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) [2024-11-19 01:44:39,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:39,271 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:39,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:44:39,271 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:39,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash 425526803, now seen corresponding path program 1 times [2024-11-19 01:44:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:39,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168444582] [2024-11-19 01:44:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:39,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:39,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:39,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168444582] [2024-11-19 01:44:39,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168444582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:39,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:39,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:44:39,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767138810] [2024-11-19 01:44:39,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:39,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:44:39,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:44:39,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:44:39,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:39,366 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) [2024-11-19 01:44:39,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:39,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:39,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:39,504 INFO L124 PetriNetUnfolderBase]: 243/427 cut-off events. [2024-11-19 01:44:39,504 INFO L125 PetriNetUnfolderBase]: For 583/583 co-relation queries the response was YES. [2024-11-19 01:44:39,506 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. [2024-11-19 01:44:39,508 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 48 selfloop transitions, 6 changer transitions 2/57 dead transitions. [2024-11-19 01:44:39,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 386 flow [2024-11-19 01:44:39,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:44:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:44:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-11-19 01:44:39,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-11-19 01:44:39,509 INFO L175 Difference]: Start difference. First operand has 65 places, 42 transitions, 255 flow. Second operand 5 states and 66 transitions. [2024-11-19 01:44:39,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 386 flow [2024-11-19 01:44:39,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 339 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-11-19 01:44:39,513 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 197 flow [2024-11-19 01:44:39,513 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} [2024-11-19 01:44:39,515 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2024-11-19 01:44:39,516 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 197 flow [2024-11-19 01:44:39,516 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) [2024-11-19 01:44:39,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:39,517 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:39,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:44:39,517 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:39,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:39,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1357813479, now seen corresponding path program 1 times [2024-11-19 01:44:39,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:39,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320403373] [2024-11-19 01:44:39,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:39,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:39,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:39,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320403373] [2024-11-19 01:44:39,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320403373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:39,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:44:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607619246] [2024-11-19 01:44:39,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:39,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:44:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:44:39,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:44:39,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:39,618 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) [2024-11-19 01:44:39,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:39,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:39,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:39,727 INFO L124 PetriNetUnfolderBase]: 175/316 cut-off events. [2024-11-19 01:44:39,727 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2024-11-19 01:44:39,728 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. [2024-11-19 01:44:39,729 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 26 selfloop transitions, 2 changer transitions 20/49 dead transitions. [2024-11-19 01:44:39,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 295 flow [2024-11-19 01:44:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:44:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:44:39,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-19 01:44:39,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-19 01:44:39,731 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 197 flow. Second operand 5 states and 60 transitions. [2024-11-19 01:44:39,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 295 flow [2024-11-19 01:44:39,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 280 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-19 01:44:39,733 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 114 flow [2024-11-19 01:44:39,734 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} [2024-11-19 01:44:39,734 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2024-11-19 01:44:39,734 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 114 flow [2024-11-19 01:44:39,735 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) [2024-11-19 01:44:39,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:39,735 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:39,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:44:39,735 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:39,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:39,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1127311936, now seen corresponding path program 1 times [2024-11-19 01:44:39,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:39,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592928037] [2024-11-19 01:44:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:39,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:39,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:39,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592928037] [2024-11-19 01:44:39,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592928037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:39,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177747847] [2024-11-19 01:44:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:39,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:39,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:39,890 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) [2024-11-19 01:44:39,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:44:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:39,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:44:39,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:40,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:40,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:40,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177747847] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:40,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:44:40,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-19 01:44:40,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050502287] [2024-11-19 01:44:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:40,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:40,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:40,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:40,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:44:40,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:40,170 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) [2024-11-19 01:44:40,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:40,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:40,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:40,295 INFO L124 PetriNetUnfolderBase]: 159/268 cut-off events. [2024-11-19 01:44:40,296 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-19 01:44:40,296 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. [2024-11-19 01:44:40,297 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 32 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-11-19 01:44:40,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 236 flow [2024-11-19 01:44:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:44:40,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:44:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 60 transitions. [2024-11-19 01:44:40,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30612244897959184 [2024-11-19 01:44:40,299 INFO L175 Difference]: Start difference. First operand has 47 places, 29 transitions, 114 flow. Second operand 7 states and 60 transitions. [2024-11-19 01:44:40,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 236 flow [2024-11-19 01:44:40,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 212 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-19 01:44:40,301 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 131 flow [2024-11-19 01:44:40,302 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} [2024-11-19 01:44:40,302 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-11-19 01:44:40,302 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 131 flow [2024-11-19 01:44:40,303 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) [2024-11-19 01:44:40,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:40,303 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] [2024-11-19 01:44:40,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:44:40,504 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 [2024-11-19 01:44:40,504 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:40,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:40,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1060041231, now seen corresponding path program 1 times [2024-11-19 01:44:40,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:40,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823047513] [2024-11-19 01:44:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:40,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:40,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:40,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823047513] [2024-11-19 01:44:40,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823047513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:40,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173234865] [2024-11-19 01:44:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:40,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:40,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:40,669 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) [2024-11-19 01:44:40,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:44:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:40,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:44:40,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:40,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:40,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173234865] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:40,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:44:40,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-19 01:44:40,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433139959] [2024-11-19 01:44:40,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:40,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:40,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:40,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:44:40,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:40,893 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) [2024-11-19 01:44:40,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:40,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:40,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:41,011 INFO L124 PetriNetUnfolderBase]: 227/404 cut-off events. [2024-11-19 01:44:41,011 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2024-11-19 01:44:41,012 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. [2024-11-19 01:44:41,014 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 36 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-11-19 01:44:41,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 274 flow [2024-11-19 01:44:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:44:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:44:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2024-11-19 01:44:41,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3163265306122449 [2024-11-19 01:44:41,015 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 131 flow. Second operand 7 states and 62 transitions. [2024-11-19 01:44:41,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 274 flow [2024-11-19 01:44:41,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 259 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 01:44:41,017 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 150 flow [2024-11-19 01:44:41,017 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} [2024-11-19 01:44:41,017 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2024-11-19 01:44:41,018 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 150 flow [2024-11-19 01:44:41,018 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) [2024-11-19 01:44:41,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:41,018 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] [2024-11-19 01:44:41,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 01:44:41,219 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 [2024-11-19 01:44:41,219 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:41,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:41,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1721947342, now seen corresponding path program 1 times [2024-11-19 01:44:41,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:41,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875384727] [2024-11-19 01:44:41,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:41,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:41,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:41,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875384727] [2024-11-19 01:44:41,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875384727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:41,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535752054] [2024-11-19 01:44:41,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:41,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:41,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:41,894 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) [2024-11-19 01:44:41,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:44:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:41,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 01:44:41,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:42,124 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-19 01:44:42,125 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 [2024-11-19 01:44:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:42,161 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:44:42,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535752054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:42,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:44:42,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-19 01:44:42,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103199141] [2024-11-19 01:44:42,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:42,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:42,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:42,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:44:42,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:42,165 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) [2024-11-19 01:44:42,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:42,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:42,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:42,478 INFO L124 PetriNetUnfolderBase]: 333/599 cut-off events. [2024-11-19 01:44:42,478 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2024-11-19 01:44:42,482 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. [2024-11-19 01:44:42,485 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 64 selfloop transitions, 7 changer transitions 6/78 dead transitions. [2024-11-19 01:44:42,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 78 transitions, 478 flow [2024-11-19 01:44:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:44:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:44:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-19 01:44:42,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-19 01:44:42,486 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 150 flow. Second operand 7 states and 91 transitions. [2024-11-19 01:44:42,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 78 transitions, 478 flow [2024-11-19 01:44:42,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 466 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 01:44:42,490 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 198 flow [2024-11-19 01:44:42,491 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} [2024-11-19 01:44:42,491 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2024-11-19 01:44:42,491 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 198 flow [2024-11-19 01:44:42,492 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) [2024-11-19 01:44:42,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:42,492 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] [2024-11-19 01:44:42,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 01:44:42,692 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 [2024-11-19 01:44:42,693 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:42,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash -686636724, now seen corresponding path program 2 times [2024-11-19 01:44:42,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:42,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670855269] [2024-11-19 01:44:42,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:42,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:42,716 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:44:42,716 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:43,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:43,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670855269] [2024-11-19 01:44:43,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670855269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:43,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:43,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:44:43,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234282529] [2024-11-19 01:44:43,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:43,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:44:43,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:43,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:44:43,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:44:43,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:43,120 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) [2024-11-19 01:44:43,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:43,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:43,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:43,475 INFO L124 PetriNetUnfolderBase]: 388/697 cut-off events. [2024-11-19 01:44:43,475 INFO L125 PetriNetUnfolderBase]: For 1231/1231 co-relation queries the response was YES. [2024-11-19 01:44:43,477 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. [2024-11-19 01:44:43,480 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 55 selfloop transitions, 14 changer transitions 6/76 dead transitions. [2024-11-19 01:44:43,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 530 flow [2024-11-19 01:44:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:43,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-11-19 01:44:43,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2024-11-19 01:44:43,482 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 198 flow. Second operand 9 states and 95 transitions. [2024-11-19 01:44:43,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 530 flow [2024-11-19 01:44:43,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 499 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-19 01:44:43,485 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 286 flow [2024-11-19 01:44:43,486 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} [2024-11-19 01:44:43,486 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 31 predicate places. [2024-11-19 01:44:43,486 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 286 flow [2024-11-19 01:44:43,487 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) [2024-11-19 01:44:43,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:43,487 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] [2024-11-19 01:44:43,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 01:44:43,487 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:43,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:43,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1320390510, now seen corresponding path program 3 times [2024-11-19 01:44:43,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:43,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523056397] [2024-11-19 01:44:43,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:44:43,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:43,523 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:44:43,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:43,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:43,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523056397] [2024-11-19 01:44:43,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523056397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:43,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:43,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:44:43,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032874900] [2024-11-19 01:44:43,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:43,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:44:43,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:43,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:44:43,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:44:43,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:43,893 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) [2024-11-19 01:44:43,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:43,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:43,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:44,280 INFO L124 PetriNetUnfolderBase]: 424/764 cut-off events. [2024-11-19 01:44:44,281 INFO L125 PetriNetUnfolderBase]: For 1866/1866 co-relation queries the response was YES. [2024-11-19 01:44:44,283 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. [2024-11-19 01:44:44,286 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 65 selfloop transitions, 17 changer transitions 6/89 dead transitions. [2024-11-19 01:44:44,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 700 flow [2024-11-19 01:44:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-11-19 01:44:44,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-11-19 01:44:44,288 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 286 flow. Second operand 9 states and 98 transitions. [2024-11-19 01:44:44,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 700 flow [2024-11-19 01:44:44,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 89 transitions, 666 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-11-19 01:44:44,292 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 391 flow [2024-11-19 01:44:44,293 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} [2024-11-19 01:44:44,293 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-11-19 01:44:44,293 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 391 flow [2024-11-19 01:44:44,294 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) [2024-11-19 01:44:44,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:44,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:44,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 01:44:44,295 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:44,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:44,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2087679896, now seen corresponding path program 4 times [2024-11-19 01:44:44,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:44,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561698736] [2024-11-19 01:44:44,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:44:44,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:44,325 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:44:44,325 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:44,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:44,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561698736] [2024-11-19 01:44:44,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561698736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:44,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:44,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:44:44,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273319892] [2024-11-19 01:44:44,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:44,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:44:44,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:44,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:44:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:44:44,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:44,509 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) [2024-11-19 01:44:44,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:44,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:44,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:44,738 INFO L124 PetriNetUnfolderBase]: 419/759 cut-off events. [2024-11-19 01:44:44,739 INFO L125 PetriNetUnfolderBase]: For 2253/2253 co-relation queries the response was YES. [2024-11-19 01:44:44,741 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. [2024-11-19 01:44:44,744 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 58 selfloop transitions, 20 changer transitions 6/85 dead transitions. [2024-11-19 01:44:44,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 710 flow [2024-11-19 01:44:44,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:44:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:44:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-19 01:44:44,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-19 01:44:44,745 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 391 flow. Second operand 7 states and 91 transitions. [2024-11-19 01:44:44,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 710 flow [2024-11-19 01:44:44,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 85 transitions, 658 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-19 01:44:44,751 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 438 flow [2024-11-19 01:44:44,751 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} [2024-11-19 01:44:44,752 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 40 predicate places. [2024-11-19 01:44:44,752 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 438 flow [2024-11-19 01:44:44,752 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) [2024-11-19 01:44:44,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:44,753 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] [2024-11-19 01:44:44,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 01:44:44,753 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:44,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:44,753 INFO L85 PathProgramCache]: Analyzing trace with hash -425613040, now seen corresponding path program 5 times [2024-11-19 01:44:44,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:44,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263624246] [2024-11-19 01:44:44,754 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:44:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:44,778 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:44:44,778 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:45,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:45,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263624246] [2024-11-19 01:44:45,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263624246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:45,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472923673] [2024-11-19 01:44:45,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:44:45,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:45,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:45,387 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) [2024-11-19 01:44:45,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:44:45,483 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:44:45,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:45,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 01:44:45,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:45,608 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-19 01:44:45,608 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 [2024-11-19 01:44:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:45,637 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:44:45,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472923673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:45,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:44:45,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2024-11-19 01:44:45,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227659795] [2024-11-19 01:44:45,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:45,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:45,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:45,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:44:45,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:45,639 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) [2024-11-19 01:44:45,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:45,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:45,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:45,881 INFO L124 PetriNetUnfolderBase]: 409/736 cut-off events. [2024-11-19 01:44:45,881 INFO L125 PetriNetUnfolderBase]: For 2161/2161 co-relation queries the response was YES. [2024-11-19 01:44:45,884 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. [2024-11-19 01:44:45,887 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 62 selfloop transitions, 16 changer transitions 6/85 dead transitions. [2024-11-19 01:44:45,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 771 flow [2024-11-19 01:44:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:44:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:44:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-19 01:44:45,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-11-19 01:44:45,888 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 438 flow. Second operand 7 states and 86 transitions. [2024-11-19 01:44:45,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 771 flow [2024-11-19 01:44:45,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 744 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-19 01:44:45,895 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 469 flow [2024-11-19 01:44:45,895 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} [2024-11-19 01:44:45,896 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2024-11-19 01:44:45,896 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 469 flow [2024-11-19 01:44:45,896 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) [2024-11-19 01:44:45,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:45,897 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] [2024-11-19 01:44:45,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 01:44:46,097 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 [2024-11-19 01:44:46,098 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:46,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:46,098 INFO L85 PathProgramCache]: Analyzing trace with hash -645544756, now seen corresponding path program 6 times [2024-11-19 01:44:46,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:46,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988932193] [2024-11-19 01:44:46,098 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:44:46,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:46,115 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:44:46,116 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:46,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:46,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988932193] [2024-11-19 01:44:46,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988932193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:46,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:46,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:44:46,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451543384] [2024-11-19 01:44:46,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:46,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:44:46,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:46,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:44:46,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:44:46,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:46,428 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) [2024-11-19 01:44:46,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:46,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:46,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:46,724 INFO L124 PetriNetUnfolderBase]: 400/714 cut-off events. [2024-11-19 01:44:46,724 INFO L125 PetriNetUnfolderBase]: For 2306/2306 co-relation queries the response was YES. [2024-11-19 01:44:46,727 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. [2024-11-19 01:44:46,730 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 53 selfloop transitions, 23 changer transitions 6/83 dead transitions. [2024-11-19 01:44:46,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 777 flow [2024-11-19 01:44:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-11-19 01:44:46,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-11-19 01:44:46,732 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 469 flow. Second operand 9 states and 94 transitions. [2024-11-19 01:44:46,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 777 flow [2024-11-19 01:44:46,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 727 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-19 01:44:46,737 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 538 flow [2024-11-19 01:44:46,738 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} [2024-11-19 01:44:46,738 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 49 predicate places. [2024-11-19 01:44:46,738 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 538 flow [2024-11-19 01:44:46,738 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) [2024-11-19 01:44:46,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:46,739 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] [2024-11-19 01:44:46,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 01:44:46,739 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:46,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1309568190, now seen corresponding path program 7 times [2024-11-19 01:44:46,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:46,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716036202] [2024-11-19 01:44:46,740 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:44:46,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:47,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:47,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716036202] [2024-11-19 01:44:47,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716036202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:47,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697436421] [2024-11-19 01:44:47,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:44:47,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:47,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:47,206 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) [2024-11-19 01:44:47,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:44:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:47,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 01:44:47,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:47,395 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-19 01:44:47,395 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 [2024-11-19 01:44:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:47,425 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:44:47,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697436421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:47,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:44:47,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2024-11-19 01:44:47,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289437656] [2024-11-19 01:44:47,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:47,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:47,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:47,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:47,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:44:47,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:47,427 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) [2024-11-19 01:44:47,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:47,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:47,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:47,703 INFO L124 PetriNetUnfolderBase]: 516/922 cut-off events. [2024-11-19 01:44:47,704 INFO L125 PetriNetUnfolderBase]: For 3009/3009 co-relation queries the response was YES. [2024-11-19 01:44:47,706 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. [2024-11-19 01:44:47,711 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 81 selfloop transitions, 19 changer transitions 6/107 dead transitions. [2024-11-19 01:44:47,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 107 transitions, 1119 flow [2024-11-19 01:44:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:44:47,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:44:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-19 01:44:47,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-11-19 01:44:47,712 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 538 flow. Second operand 7 states and 86 transitions. [2024-11-19 01:44:47,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 107 transitions, 1119 flow [2024-11-19 01:44:47,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 1055 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-19 01:44:47,719 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 597 flow [2024-11-19 01:44:47,720 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} [2024-11-19 01:44:47,720 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2024-11-19 01:44:47,720 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 597 flow [2024-11-19 01:44:47,720 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) [2024-11-19 01:44:47,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:47,721 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] [2024-11-19 01:44:47,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 01:44:47,924 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 [2024-11-19 01:44:47,925 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:47,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:47,925 INFO L85 PathProgramCache]: Analyzing trace with hash 69621084, now seen corresponding path program 8 times [2024-11-19 01:44:47,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:47,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235557224] [2024-11-19 01:44:47,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:47,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:47,944 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:44:47,944 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:48,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:48,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235557224] [2024-11-19 01:44:48,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235557224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:48,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:48,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:44:48,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759122699] [2024-11-19 01:44:48,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:48,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:44:48,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:48,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:44:48,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:44:48,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:48,266 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) [2024-11-19 01:44:48,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:48,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:48,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:48,640 INFO L124 PetriNetUnfolderBase]: 512/918 cut-off events. [2024-11-19 01:44:48,640 INFO L125 PetriNetUnfolderBase]: For 3456/3456 co-relation queries the response was YES. [2024-11-19 01:44:48,643 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. [2024-11-19 01:44:48,648 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 66 selfloop transitions, 23 changer transitions 6/96 dead transitions. [2024-11-19 01:44:48,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 989 flow [2024-11-19 01:44:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:48,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-11-19 01:44:48,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-19 01:44:48,649 INFO L175 Difference]: Start difference. First operand has 79 places, 58 transitions, 597 flow. Second operand 9 states and 93 transitions. [2024-11-19 01:44:48,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 989 flow [2024-11-19 01:44:48,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 96 transitions, 938 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-19 01:44:48,658 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 718 flow [2024-11-19 01:44:48,658 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} [2024-11-19 01:44:48,658 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2024-11-19 01:44:48,658 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 718 flow [2024-11-19 01:44:48,659 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) [2024-11-19 01:44:48,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:48,659 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] [2024-11-19 01:44:48,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 01:44:48,659 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:48,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:48,660 INFO L85 PathProgramCache]: Analyzing trace with hash -333497234, now seen corresponding path program 9 times [2024-11-19 01:44:48,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:48,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042347554] [2024-11-19 01:44:48,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:44:48,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:48,675 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:44:48,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042347554] [2024-11-19 01:44:48,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042347554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:48,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:48,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:44:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251914148] [2024-11-19 01:44:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:48,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:44:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:44:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:44:48,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:48,986 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) [2024-11-19 01:44:48,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:48,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:48,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:49,344 INFO L124 PetriNetUnfolderBase]: 515/925 cut-off events. [2024-11-19 01:44:49,344 INFO L125 PetriNetUnfolderBase]: For 4324/4324 co-relation queries the response was YES. [2024-11-19 01:44:49,348 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. [2024-11-19 01:44:49,352 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 67 selfloop transitions, 25 changer transitions 6/99 dead transitions. [2024-11-19 01:44:49,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 99 transitions, 1090 flow [2024-11-19 01:44:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:49,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:49,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-11-19 01:44:49,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-11-19 01:44:49,353 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 718 flow. Second operand 9 states and 94 transitions. [2024-11-19 01:44:49,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 99 transitions, 1090 flow [2024-11-19 01:44:49,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 1047 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-19 01:44:49,363 INFO L231 Difference]: Finished difference. Result has 95 places, 69 transitions, 812 flow [2024-11-19 01:44:49,363 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} [2024-11-19 01:44:49,363 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 69 predicate places. [2024-11-19 01:44:49,363 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 69 transitions, 812 flow [2024-11-19 01:44:49,364 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) [2024-11-19 01:44:49,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:49,364 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] [2024-11-19 01:44:49,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 01:44:49,364 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:49,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:49,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1590982928, now seen corresponding path program 10 times [2024-11-19 01:44:49,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:49,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525933424] [2024-11-19 01:44:49,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:44:49,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:49,378 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:44:49,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:49,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:49,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525933424] [2024-11-19 01:44:49,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525933424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:49,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:49,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:44:49,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924925867] [2024-11-19 01:44:49,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:49,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:44:49,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:49,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:44:49,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:44:49,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:49,507 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) [2024-11-19 01:44:49,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:49,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:49,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:49,760 INFO L124 PetriNetUnfolderBase]: 506/903 cut-off events. [2024-11-19 01:44:49,760 INFO L125 PetriNetUnfolderBase]: For 4519/4519 co-relation queries the response was YES. [2024-11-19 01:44:49,763 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. [2024-11-19 01:44:49,774 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 63 selfloop transitions, 25 changer transitions 6/95 dead transitions. [2024-11-19 01:44:49,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 1092 flow [2024-11-19 01:44:49,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:44:49,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:44:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-11-19 01:44:49,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-11-19 01:44:49,777 INFO L175 Difference]: Start difference. First operand has 95 places, 69 transitions, 812 flow. Second operand 8 states and 89 transitions. [2024-11-19 01:44:49,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 1092 flow [2024-11-19 01:44:49,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 95 transitions, 1043 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-19 01:44:49,787 INFO L231 Difference]: Finished difference. Result has 98 places, 69 transitions, 822 flow [2024-11-19 01:44:49,789 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} [2024-11-19 01:44:49,789 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 72 predicate places. [2024-11-19 01:44:49,790 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 69 transitions, 822 flow [2024-11-19 01:44:49,790 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) [2024-11-19 01:44:49,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:49,790 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] [2024-11-19 01:44:49,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 01:44:49,790 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:49,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:49,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1112436069, now seen corresponding path program 1 times [2024-11-19 01:44:49,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:49,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688898334] [2024-11-19 01:44:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:49,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:50,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688898334] [2024-11-19 01:44:50,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688898334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:50,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:50,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:44:50,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225467184] [2024-11-19 01:44:50,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:50,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:44:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:50,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:44:50,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:44:50,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:50,029 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) [2024-11-19 01:44:50,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:50,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:50,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:50,382 INFO L124 PetriNetUnfolderBase]: 593/1051 cut-off events. [2024-11-19 01:44:50,382 INFO L125 PetriNetUnfolderBase]: For 5317/5317 co-relation queries the response was YES. [2024-11-19 01:44:50,386 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. [2024-11-19 01:44:50,390 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 80 selfloop transitions, 34 changer transitions 0/115 dead transitions. [2024-11-19 01:44:50,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 115 transitions, 1316 flow [2024-11-19 01:44:50,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-11-19 01:44:50,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-11-19 01:44:50,392 INFO L175 Difference]: Start difference. First operand has 98 places, 69 transitions, 822 flow. Second operand 9 states and 104 transitions. [2024-11-19 01:44:50,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 115 transitions, 1316 flow [2024-11-19 01:44:50,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 115 transitions, 1268 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-19 01:44:50,405 INFO L231 Difference]: Finished difference. Result has 101 places, 75 transitions, 948 flow [2024-11-19 01:44:50,405 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} [2024-11-19 01:44:50,405 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2024-11-19 01:44:50,406 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 75 transitions, 948 flow [2024-11-19 01:44:50,406 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) [2024-11-19 01:44:50,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:50,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:50,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 01:44:50,406 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:50,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:50,407 INFO L85 PathProgramCache]: Analyzing trace with hash -226551663, now seen corresponding path program 2 times [2024-11-19 01:44:50,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:50,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843547324] [2024-11-19 01:44:50,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:50,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:50,429 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:44:50,429 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:50,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:50,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843547324] [2024-11-19 01:44:50,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843547324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:50,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:50,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:44:50,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708358770] [2024-11-19 01:44:50,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:50,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:44:50,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:50,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:44:50,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:44:50,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:50,659 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) [2024-11-19 01:44:50,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:50,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:50,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:50,987 INFO L124 PetriNetUnfolderBase]: 588/1046 cut-off events. [2024-11-19 01:44:50,987 INFO L125 PetriNetUnfolderBase]: For 5895/5895 co-relation queries the response was YES. [2024-11-19 01:44:50,992 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. [2024-11-19 01:44:50,997 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 74 selfloop transitions, 30 changer transitions 10/115 dead transitions. [2024-11-19 01:44:50,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 115 transitions, 1335 flow [2024-11-19 01:44:50,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:50,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-11-19 01:44:50,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-19 01:44:50,999 INFO L175 Difference]: Start difference. First operand has 101 places, 75 transitions, 948 flow. Second operand 9 states and 93 transitions. [2024-11-19 01:44:50,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 115 transitions, 1335 flow [2024-11-19 01:44:51,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 115 transitions, 1284 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-19 01:44:51,013 INFO L231 Difference]: Finished difference. Result has 106 places, 73 transitions, 913 flow [2024-11-19 01:44:51,014 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} [2024-11-19 01:44:51,014 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 80 predicate places. [2024-11-19 01:44:51,014 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 73 transitions, 913 flow [2024-11-19 01:44:51,015 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) [2024-11-19 01:44:51,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:51,015 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] [2024-11-19 01:44:51,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 01:44:51,015 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:51,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:51,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1323625025, now seen corresponding path program 1 times [2024-11-19 01:44:51,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:51,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008962822] [2024-11-19 01:44:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:51,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:51,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:51,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008962822] [2024-11-19 01:44:51,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008962822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:51,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637567057] [2024-11-19 01:44:51,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:51,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:51,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:51,261 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) [2024-11-19 01:44:51,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:44:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:51,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:44:51,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:51,407 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-19 01:44:51,408 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 [2024-11-19 01:44:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:51,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:51,507 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-19 01:44:51,508 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 [2024-11-19 01:44:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:51,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637567057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:44:51,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:44:51,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-19 01:44:51,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844158450] [2024-11-19 01:44:51,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:44:51,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 01:44:51,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:51,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 01:44:51,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:44:51,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:51,526 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) [2024-11-19 01:44:51,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:51,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:51,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:51,989 INFO L124 PetriNetUnfolderBase]: 618/1094 cut-off events. [2024-11-19 01:44:51,989 INFO L125 PetriNetUnfolderBase]: For 5511/5511 co-relation queries the response was YES. [2024-11-19 01:44:51,994 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. [2024-11-19 01:44:51,999 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 89 selfloop transitions, 34 changer transitions 0/124 dead transitions. [2024-11-19 01:44:51,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 124 transitions, 1413 flow [2024-11-19 01:44:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:44:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:44:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-11-19 01:44:52,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-11-19 01:44:52,000 INFO L175 Difference]: Start difference. First operand has 106 places, 73 transitions, 913 flow. Second operand 10 states and 106 transitions. [2024-11-19 01:44:52,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 124 transitions, 1413 flow [2024-11-19 01:44:52,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 124 transitions, 1349 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-19 01:44:52,018 INFO L231 Difference]: Finished difference. Result has 107 places, 75 transitions, 947 flow [2024-11-19 01:44:52,018 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} [2024-11-19 01:44:52,018 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 81 predicate places. [2024-11-19 01:44:52,018 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 75 transitions, 947 flow [2024-11-19 01:44:52,019 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) [2024-11-19 01:44:52,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:52,019 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] [2024-11-19 01:44:52,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 01:44:52,219 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 [2024-11-19 01:44:52,219 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:52,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1142605111, now seen corresponding path program 3 times [2024-11-19 01:44:52,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:52,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399130082] [2024-11-19 01:44:52,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:44:52,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:52,233 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:44:52,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:52,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:52,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399130082] [2024-11-19 01:44:52,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399130082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:52,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:52,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:44:52,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981180517] [2024-11-19 01:44:52,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:52,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:44:52,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:52,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:44:52,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:44:52,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:52,477 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) [2024-11-19 01:44:52,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:52,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:52,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:52,816 INFO L124 PetriNetUnfolderBase]: 636/1124 cut-off events. [2024-11-19 01:44:52,816 INFO L125 PetriNetUnfolderBase]: For 6620/6620 co-relation queries the response was YES. [2024-11-19 01:44:52,820 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. [2024-11-19 01:44:52,824 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 74 selfloop transitions, 36 changer transitions 0/111 dead transitions. [2024-11-19 01:44:52,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 1360 flow [2024-11-19 01:44:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-11-19 01:44:52,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-11-19 01:44:52,825 INFO L175 Difference]: Start difference. First operand has 107 places, 75 transitions, 947 flow. Second operand 9 states and 94 transitions. [2024-11-19 01:44:52,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 1360 flow [2024-11-19 01:44:52,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 111 transitions, 1280 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-19 01:44:52,839 INFO L231 Difference]: Finished difference. Result has 109 places, 78 transitions, 989 flow [2024-11-19 01:44:52,839 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} [2024-11-19 01:44:52,839 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 83 predicate places. [2024-11-19 01:44:52,839 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 78 transitions, 989 flow [2024-11-19 01:44:52,839 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) [2024-11-19 01:44:52,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:52,840 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] [2024-11-19 01:44:52,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 01:44:52,840 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:52,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:52,840 INFO L85 PathProgramCache]: Analyzing trace with hash 218597905, now seen corresponding path program 4 times [2024-11-19 01:44:52,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:52,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418256428] [2024-11-19 01:44:52,840 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:44:52,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:52,854 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:44:52,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:52,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:52,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418256428] [2024-11-19 01:44:52,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418256428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:52,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:52,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:44:52,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251338789] [2024-11-19 01:44:52,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:52,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:52,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:52,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:52,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:44:52,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:52,968 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) [2024-11-19 01:44:52,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:52,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:52,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:53,244 INFO L124 PetriNetUnfolderBase]: 636/1129 cut-off events. [2024-11-19 01:44:53,245 INFO L125 PetriNetUnfolderBase]: For 5675/5675 co-relation queries the response was YES. [2024-11-19 01:44:53,249 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. [2024-11-19 01:44:53,254 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 73 selfloop transitions, 32 changer transitions 5/111 dead transitions. [2024-11-19 01:44:53,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 1356 flow [2024-11-19 01:44:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:44:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:44:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-19 01:44:53,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-11-19 01:44:53,255 INFO L175 Difference]: Start difference. First operand has 109 places, 78 transitions, 989 flow. Second operand 7 states and 86 transitions. [2024-11-19 01:44:53,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 1356 flow [2024-11-19 01:44:53,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 111 transitions, 1286 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 01:44:53,269 INFO L231 Difference]: Finished difference. Result has 110 places, 77 transitions, 970 flow [2024-11-19 01:44:53,270 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} [2024-11-19 01:44:53,271 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 84 predicate places. [2024-11-19 01:44:53,271 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 77 transitions, 970 flow [2024-11-19 01:44:53,271 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) [2024-11-19 01:44:53,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:53,271 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] [2024-11-19 01:44:53,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 01:44:53,272 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:53,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:53,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1511752797, now seen corresponding path program 2 times [2024-11-19 01:44:53,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:53,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060855938] [2024-11-19 01:44:53,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:53,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:53,288 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:44:53,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:53,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:53,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060855938] [2024-11-19 01:44:53,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060855938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:53,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822724263] [2024-11-19 01:44:53,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:53,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:53,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:53,557 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) [2024-11-19 01:44:53,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:44:53,648 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:44:53,648 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:53,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 01:44:53,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:53,756 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 01:44:53,757 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 [2024-11-19 01:44:53,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:53,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:53,865 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-19 01:44:53,865 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 [2024-11-19 01:44:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:53,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822724263] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:44:53,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:44:53,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-11-19 01:44:53,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751239136] [2024-11-19 01:44:53,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:44:53,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 01:44:53,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:53,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 01:44:53,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:44:53,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:53,890 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) [2024-11-19 01:44:53,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:53,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:53,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:54,364 INFO L124 PetriNetUnfolderBase]: 925/1638 cut-off events. [2024-11-19 01:44:54,364 INFO L125 PetriNetUnfolderBase]: For 7043/7043 co-relation queries the response was YES. [2024-11-19 01:44:54,372 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. [2024-11-19 01:44:54,378 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 108 selfloop transitions, 42 changer transitions 0/151 dead transitions. [2024-11-19 01:44:54,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 151 transitions, 1659 flow [2024-11-19 01:44:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:44:54,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:44:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-11-19 01:44:54,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-11-19 01:44:54,379 INFO L175 Difference]: Start difference. First operand has 110 places, 77 transitions, 970 flow. Second operand 12 states and 139 transitions. [2024-11-19 01:44:54,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 151 transitions, 1659 flow [2024-11-19 01:44:54,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 151 transitions, 1589 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-19 01:44:54,397 INFO L231 Difference]: Finished difference. Result has 118 places, 85 transitions, 1108 flow [2024-11-19 01:44:54,397 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} [2024-11-19 01:44:54,398 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2024-11-19 01:44:54,398 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 85 transitions, 1108 flow [2024-11-19 01:44:54,398 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) [2024-11-19 01:44:54,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:54,398 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] [2024-11-19 01:44:54,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 01:44:54,599 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 [2024-11-19 01:44:54,600 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:54,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2049108817, now seen corresponding path program 5 times [2024-11-19 01:44:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:54,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604870739] [2024-11-19 01:44:54,601 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:44:54,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:54,625 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:44:54,625 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:54,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:54,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604870739] [2024-11-19 01:44:54,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604870739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:54,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565696886] [2024-11-19 01:44:54,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:44:54,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:54,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:54,884 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) [2024-11-19 01:44:54,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:44:54,975 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:44:54,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:54,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 01:44:54,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:55,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:44:55,164 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 [2024-11-19 01:44:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:55,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:55,370 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-19 01:44:55,370 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 [2024-11-19 01:44:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:55,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565696886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:44:55,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:44:55,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 27 [2024-11-19 01:44:55,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912053204] [2024-11-19 01:44:55,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:44:55,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 01:44:55,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:55,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 01:44:55,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2024-11-19 01:44:55,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:55,603 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) [2024-11-19 01:44:55,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:55,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:55,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:57,377 INFO L124 PetriNetUnfolderBase]: 2838/5078 cut-off events. [2024-11-19 01:44:57,378 INFO L125 PetriNetUnfolderBase]: For 26386/26386 co-relation queries the response was YES. [2024-11-19 01:44:57,393 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. [2024-11-19 01:44:57,409 INFO L140 encePairwiseOnDemand]: 14/28 looper letters, 255 selfloop transitions, 148 changer transitions 10/414 dead transitions. [2024-11-19 01:44:57,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 414 transitions, 4958 flow [2024-11-19 01:44:57,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-19 01:44:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-19 01:44:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 374 transitions. [2024-11-19 01:44:57,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.361003861003861 [2024-11-19 01:44:57,412 INFO L175 Difference]: Start difference. First operand has 118 places, 85 transitions, 1108 flow. Second operand 37 states and 374 transitions. [2024-11-19 01:44:57,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 414 transitions, 4958 flow [2024-11-19 01:44:57,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 414 transitions, 4714 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-11-19 01:44:57,473 INFO L231 Difference]: Finished difference. Result has 161 places, 194 transitions, 3056 flow [2024-11-19 01:44:57,473 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} [2024-11-19 01:44:57,473 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 135 predicate places. [2024-11-19 01:44:57,474 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 194 transitions, 3056 flow [2024-11-19 01:44:57,474 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) [2024-11-19 01:44:57,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:57,474 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] [2024-11-19 01:44:57,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 01:44:57,678 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 [2024-11-19 01:44:57,678 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:57,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1978792003, now seen corresponding path program 3 times [2024-11-19 01:44:57,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:57,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613204569] [2024-11-19 01:44:57,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:44:57,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:57,693 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:44:57,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:57,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:57,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613204569] [2024-11-19 01:44:57,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613204569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:57,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453091021] [2024-11-19 01:44:57,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:44:57,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:57,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:57,953 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) [2024-11-19 01:44:57,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:44:58,040 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:44:58,040 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:58,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 01:44:58,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:58,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:44:58,121 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 [2024-11-19 01:44:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:58,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:58,337 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-19 01:44:58,338 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 [2024-11-19 01:44:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:58,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453091021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:44:58,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:44:58,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 18 [2024-11-19 01:44:58,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425817906] [2024-11-19 01:44:58,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:44:58,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:44:58,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:58,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:44:58,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:44:58,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:58,362 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) [2024-11-19 01:44:58,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:58,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:58,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:59,441 INFO L124 PetriNetUnfolderBase]: 3110/5605 cut-off events. [2024-11-19 01:44:59,441 INFO L125 PetriNetUnfolderBase]: For 33458/33458 co-relation queries the response was YES. [2024-11-19 01:44:59,462 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. [2024-11-19 01:44:59,480 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 141 selfloop transitions, 131 changer transitions 0/273 dead transitions. [2024-11-19 01:44:59,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 273 transitions, 4072 flow [2024-11-19 01:44:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:44:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 01:44:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 154 transitions. [2024-11-19 01:44:59,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-11-19 01:44:59,482 INFO L175 Difference]: Start difference. First operand has 161 places, 194 transitions, 3056 flow. Second operand 15 states and 154 transitions. [2024-11-19 01:44:59,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 273 transitions, 4072 flow [2024-11-19 01:44:59,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 273 transitions, 3857 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-11-19 01:44:59,763 INFO L231 Difference]: Finished difference. Result has 171 places, 204 transitions, 3284 flow [2024-11-19 01:44:59,764 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} [2024-11-19 01:44:59,766 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 145 predicate places. [2024-11-19 01:44:59,766 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 204 transitions, 3284 flow [2024-11-19 01:44:59,766 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) [2024-11-19 01:44:59,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:59,767 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] [2024-11-19 01:44:59,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 01:44:59,968 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 [2024-11-19 01:44:59,969 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:59,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:59,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1292645215, now seen corresponding path program 4 times [2024-11-19 01:44:59,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:59,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397449638] [2024-11-19 01:44:59,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:44:59,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:59,983 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:44:59,983 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:00,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:00,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397449638] [2024-11-19 01:45:00,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397449638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:00,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:00,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:45:00,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078134266] [2024-11-19 01:45:00,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:00,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:45:00,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:00,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:45:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:45:00,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:00,125 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) [2024-11-19 01:45:00,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:00,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:00,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:01,006 INFO L124 PetriNetUnfolderBase]: 2981/5323 cut-off events. [2024-11-19 01:45:01,006 INFO L125 PetriNetUnfolderBase]: For 36545/36545 co-relation queries the response was YES. [2024-11-19 01:45:01,031 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. [2024-11-19 01:45:01,050 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 116 selfloop transitions, 107 changer transitions 5/229 dead transitions. [2024-11-19 01:45:01,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 229 transitions, 3847 flow [2024-11-19 01:45:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:45:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:45:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-19 01:45:01,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-11-19 01:45:01,052 INFO L175 Difference]: Start difference. First operand has 171 places, 204 transitions, 3284 flow. Second operand 7 states and 80 transitions. [2024-11-19 01:45:01,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 229 transitions, 3847 flow [2024-11-19 01:45:01,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 229 transitions, 3670 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-19 01:45:01,265 INFO L231 Difference]: Finished difference. Result has 170 places, 198 transitions, 3181 flow [2024-11-19 01:45:01,265 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} [2024-11-19 01:45:01,265 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 144 predicate places. [2024-11-19 01:45:01,265 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 198 transitions, 3181 flow [2024-11-19 01:45:01,266 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) [2024-11-19 01:45:01,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:01,266 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] [2024-11-19 01:45:01,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-19 01:45:01,266 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:01,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:01,266 INFO L85 PathProgramCache]: Analyzing trace with hash -600675833, now seen corresponding path program 5 times [2024-11-19 01:45:01,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:01,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690745798] [2024-11-19 01:45:01,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:45:01,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:01,281 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:45:01,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:45:01,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:01,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690745798] [2024-11-19 01:45:01,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690745798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:01,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641015310] [2024-11-19 01:45:01,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:45:01,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:01,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:01,487 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) [2024-11-19 01:45:01,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 01:45:01,654 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:45:01,655 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:01,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 01:45:01,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:01,864 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-19 01:45:01,864 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 [2024-11-19 01:45:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:45:01,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:02,039 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-19 01:45:02,039 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 [2024-11-19 01:45:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:45:02,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641015310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:45:02,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:45:02,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 27 [2024-11-19 01:45:02,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779346524] [2024-11-19 01:45:02,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:45:02,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 01:45:02,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:02,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 01:45:02,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2024-11-19 01:45:02,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:02,247 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) [2024-11-19 01:45:02,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:02,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:02,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:04,974 INFO L124 PetriNetUnfolderBase]: 4157/7385 cut-off events. [2024-11-19 01:45:04,974 INFO L125 PetriNetUnfolderBase]: For 51378/51378 co-relation queries the response was YES. [2024-11-19 01:45:05,005 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. [2024-11-19 01:45:05,028 INFO L140 encePairwiseOnDemand]: 11/28 looper letters, 377 selfloop transitions, 233 changer transitions 17/628 dead transitions. [2024-11-19 01:45:05,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 628 transitions, 8064 flow [2024-11-19 01:45:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-19 01:45:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-19 01:45:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 515 transitions. [2024-11-19 01:45:05,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4277408637873754 [2024-11-19 01:45:05,030 INFO L175 Difference]: Start difference. First operand has 170 places, 198 transitions, 3181 flow. Second operand 43 states and 515 transitions. [2024-11-19 01:45:05,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 628 transitions, 8064 flow [2024-11-19 01:45:05,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 628 transitions, 7850 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 01:45:05,249 INFO L231 Difference]: Finished difference. Result has 227 places, 346 transitions, 5769 flow [2024-11-19 01:45:05,249 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} [2024-11-19 01:45:05,250 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 201 predicate places. [2024-11-19 01:45:05,250 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 346 transitions, 5769 flow [2024-11-19 01:45:05,250 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) [2024-11-19 01:45:05,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:05,250 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] [2024-11-19 01:45:05,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 01:45:05,450 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 [2024-11-19 01:45:05,451 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:05,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1823758037, now seen corresponding path program 6 times [2024-11-19 01:45:05,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:05,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981134829] [2024-11-19 01:45:05,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:45:05,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:05,465 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:45:05,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:05,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:05,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981134829] [2024-11-19 01:45:05,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981134829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:05,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107092579] [2024-11-19 01:45:05,783 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:45:05,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:05,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:05,785 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) [2024-11-19 01:45:05,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 01:45:05,880 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:45:05,880 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:05,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 01:45:05,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:05,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:45:05,946 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 [2024-11-19 01:45:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:05,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:06,027 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-19 01:45:06,028 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 [2024-11-19 01:45:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:06,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107092579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:45:06,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:45:06,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-11-19 01:45:06,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633008320] [2024-11-19 01:45:06,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:45:06,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 01:45:06,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:06,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 01:45:06,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:45:06,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:06,064 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) [2024-11-19 01:45:06,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:06,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:06,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:07,847 INFO L124 PetriNetUnfolderBase]: 4480/7996 cut-off events. [2024-11-19 01:45:07,847 INFO L125 PetriNetUnfolderBase]: For 112578/112578 co-relation queries the response was YES. [2024-11-19 01:45:07,888 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. [2024-11-19 01:45:07,908 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 309 selfloop transitions, 139 changer transitions 0/449 dead transitions. [2024-11-19 01:45:07,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 449 transitions, 7948 flow [2024-11-19 01:45:07,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:45:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:45:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 146 transitions. [2024-11-19 01:45:07,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37244897959183676 [2024-11-19 01:45:07,909 INFO L175 Difference]: Start difference. First operand has 227 places, 346 transitions, 5769 flow. Second operand 14 states and 146 transitions. [2024-11-19 01:45:07,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 449 transitions, 7948 flow [2024-11-19 01:45:08,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 449 transitions, 7503 flow, removed 179 selfloop flow, removed 12 redundant places. [2024-11-19 01:45:08,401 INFO L231 Difference]: Finished difference. Result has 234 places, 389 transitions, 6539 flow [2024-11-19 01:45:08,401 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} [2024-11-19 01:45:08,401 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 208 predicate places. [2024-11-19 01:45:08,402 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 389 transitions, 6539 flow [2024-11-19 01:45:08,402 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) [2024-11-19 01:45:08,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:08,402 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] [2024-11-19 01:45:08,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 01:45:08,602 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 [2024-11-19 01:45:08,603 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:08,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:08,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1975366923, now seen corresponding path program 6 times [2024-11-19 01:45:08,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:08,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050143859] [2024-11-19 01:45:08,603 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:45:08,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:08,616 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:45:08,616 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:08,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:08,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050143859] [2024-11-19 01:45:08,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050143859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:08,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:08,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:08,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96020046] [2024-11-19 01:45:08,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:08,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:08,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:08,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:08,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:08,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:08,927 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) [2024-11-19 01:45:08,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:08,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:08,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:10,463 INFO L124 PetriNetUnfolderBase]: 4480/8008 cut-off events. [2024-11-19 01:45:10,463 INFO L125 PetriNetUnfolderBase]: For 117960/117960 co-relation queries the response was YES. [2024-11-19 01:45:10,512 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. [2024-11-19 01:45:10,535 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 282 selfloop transitions, 128 changer transitions 4/415 dead transitions. [2024-11-19 01:45:10,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 415 transitions, 7605 flow [2024-11-19 01:45:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:45:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:45:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-11-19 01:45:10,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-11-19 01:45:10,536 INFO L175 Difference]: Start difference. First operand has 234 places, 389 transitions, 6539 flow. Second operand 9 states and 91 transitions. [2024-11-19 01:45:10,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 415 transitions, 7605 flow [2024-11-19 01:45:11,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 415 transitions, 7386 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-11-19 01:45:11,112 INFO L231 Difference]: Finished difference. Result has 237 places, 390 transitions, 6635 flow [2024-11-19 01:45:11,112 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} [2024-11-19 01:45:11,112 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 211 predicate places. [2024-11-19 01:45:11,113 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 390 transitions, 6635 flow [2024-11-19 01:45:11,113 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) [2024-11-19 01:45:11,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:11,113 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] [2024-11-19 01:45:11,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-19 01:45:11,113 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:11,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:11,113 INFO L85 PathProgramCache]: Analyzing trace with hash -872369295, now seen corresponding path program 7 times [2024-11-19 01:45:11,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:11,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089077301] [2024-11-19 01:45:11,114 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:45:11,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:11,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:11,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089077301] [2024-11-19 01:45:11,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089077301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:11,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:11,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973456253] [2024-11-19 01:45:11,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:11,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:11,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:11,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:11,341 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) [2024-11-19 01:45:11,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:11,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:11,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:12,965 INFO L124 PetriNetUnfolderBase]: 4462/7978 cut-off events. [2024-11-19 01:45:12,965 INFO L125 PetriNetUnfolderBase]: For 119196/119196 co-relation queries the response was YES. [2024-11-19 01:45:13,026 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. [2024-11-19 01:45:13,052 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 287 selfloop transitions, 116 changer transitions 7/411 dead transitions. [2024-11-19 01:45:13,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 411 transitions, 7546 flow [2024-11-19 01:45:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:45:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:45:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-11-19 01:45:13,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3531746031746032 [2024-11-19 01:45:13,053 INFO L175 Difference]: Start difference. First operand has 237 places, 390 transitions, 6635 flow. Second operand 9 states and 89 transitions. [2024-11-19 01:45:13,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 411 transitions, 7546 flow [2024-11-19 01:45:13,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 411 transitions, 7320 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-19 01:45:13,691 INFO L231 Difference]: Finished difference. Result has 239 places, 382 transitions, 6450 flow [2024-11-19 01:45:13,691 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} [2024-11-19 01:45:13,692 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 213 predicate places. [2024-11-19 01:45:13,692 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 382 transitions, 6450 flow [2024-11-19 01:45:13,692 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) [2024-11-19 01:45:13,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:13,692 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] [2024-11-19 01:45:13,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-19 01:45:13,693 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:13,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:13,693 INFO L85 PathProgramCache]: Analyzing trace with hash 646669503, now seen corresponding path program 8 times [2024-11-19 01:45:13,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:13,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374281783] [2024-11-19 01:45:13,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:45:13,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:13,715 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:45:13,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:13,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:13,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374281783] [2024-11-19 01:45:13,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374281783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:13,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:13,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:13,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537473355] [2024-11-19 01:45:13,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:13,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:13,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:13,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:13,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:13,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:13,940 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) [2024-11-19 01:45:13,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:13,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:13,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:15,624 INFO L124 PetriNetUnfolderBase]: 4419/7894 cut-off events. [2024-11-19 01:45:15,624 INFO L125 PetriNetUnfolderBase]: For 118277/118277 co-relation queries the response was YES. [2024-11-19 01:45:15,680 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. [2024-11-19 01:45:15,710 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 281 selfloop transitions, 116 changer transitions 4/402 dead transitions. [2024-11-19 01:45:15,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 402 transitions, 7342 flow [2024-11-19 01:45:15,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:45:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:45:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-11-19 01:45:15,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3531746031746032 [2024-11-19 01:45:15,711 INFO L175 Difference]: Start difference. First operand has 239 places, 382 transitions, 6450 flow. Second operand 9 states and 89 transitions. [2024-11-19 01:45:15,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 402 transitions, 7342 flow [2024-11-19 01:45:16,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 402 transitions, 6996 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-11-19 01:45:16,405 INFO L231 Difference]: Finished difference. Result has 233 places, 377 transitions, 6219 flow [2024-11-19 01:45:16,405 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} [2024-11-19 01:45:16,405 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 207 predicate places. [2024-11-19 01:45:16,406 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 377 transitions, 6219 flow [2024-11-19 01:45:16,406 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) [2024-11-19 01:45:16,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:16,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:16,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-19 01:45:16,406 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:16,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:16,407 INFO L85 PathProgramCache]: Analyzing trace with hash -68770085, now seen corresponding path program 7 times [2024-11-19 01:45:16,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:16,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475800731] [2024-11-19 01:45:16,407 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:45:16,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:16,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:16,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475800731] [2024-11-19 01:45:16,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475800731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:16,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:16,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:16,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965051570] [2024-11-19 01:45:16,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:16,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:16,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:16,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:16,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:16,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:16,622 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) [2024-11-19 01:45:16,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:16,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:16,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:18,004 INFO L124 PetriNetUnfolderBase]: 4393/7848 cut-off events. [2024-11-19 01:45:18,004 INFO L125 PetriNetUnfolderBase]: For 115967/115967 co-relation queries the response was YES. [2024-11-19 01:45:18,044 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. [2024-11-19 01:45:18,064 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 278 selfloop transitions, 113 changer transitions 8/400 dead transitions. [2024-11-19 01:45:18,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 400 transitions, 7194 flow [2024-11-19 01:45:18,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:45:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:45:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-19 01:45:18,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3412698412698413 [2024-11-19 01:45:18,065 INFO L175 Difference]: Start difference. First operand has 233 places, 377 transitions, 6219 flow. Second operand 9 states and 86 transitions. [2024-11-19 01:45:18,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 400 transitions, 7194 flow [2024-11-19 01:45:18,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 400 transitions, 6924 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-19 01:45:18,487 INFO L231 Difference]: Finished difference. Result has 230 places, 373 transitions, 6097 flow [2024-11-19 01:45:18,487 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} [2024-11-19 01:45:18,488 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 204 predicate places. [2024-11-19 01:45:18,488 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 373 transitions, 6097 flow [2024-11-19 01:45:18,488 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) [2024-11-19 01:45:18,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:18,488 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] [2024-11-19 01:45:18,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-19 01:45:18,488 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:18,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:18,488 INFO L85 PathProgramCache]: Analyzing trace with hash -811065505, now seen corresponding path program 8 times [2024-11-19 01:45:18,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:18,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571771478] [2024-11-19 01:45:18,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:45:18,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:18,504 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:45:18,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:18,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:18,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571771478] [2024-11-19 01:45:18,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571771478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:18,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338734928] [2024-11-19 01:45:18,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:45:18,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:18,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:18,725 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) [2024-11-19 01:45:18,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 01:45:18,808 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:45:18,808 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:18,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 01:45:18,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:18,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:45:18,876 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 [2024-11-19 01:45:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:18,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:18,959 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-19 01:45:18,959 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 [2024-11-19 01:45:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:18,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338734928] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:18,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:45:18,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2024-11-19 01:45:18,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592941727] [2024-11-19 01:45:18,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:18,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:45:18,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:18,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:45:18,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:45:18,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:18,995 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) [2024-11-19 01:45:18,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:18,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:18,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:20,616 INFO L124 PetriNetUnfolderBase]: 4253/7601 cut-off events. [2024-11-19 01:45:20,617 INFO L125 PetriNetUnfolderBase]: For 114598/114598 co-relation queries the response was YES. [2024-11-19 01:45:20,660 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. [2024-11-19 01:45:20,682 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 296 selfloop transitions, 107 changer transitions 0/404 dead transitions. [2024-11-19 01:45:20,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 404 transitions, 7162 flow [2024-11-19 01:45:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:45:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:45:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-19 01:45:20,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-19 01:45:20,683 INFO L175 Difference]: Start difference. First operand has 230 places, 373 transitions, 6097 flow. Second operand 7 states and 91 transitions. [2024-11-19 01:45:20,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 404 transitions, 7162 flow [2024-11-19 01:45:21,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 404 transitions, 6802 flow, removed 35 selfloop flow, removed 12 redundant places. [2024-11-19 01:45:21,131 INFO L231 Difference]: Finished difference. Result has 222 places, 367 transitions, 5898 flow [2024-11-19 01:45:21,131 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} [2024-11-19 01:45:21,132 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 196 predicate places. [2024-11-19 01:45:21,132 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 367 transitions, 5898 flow [2024-11-19 01:45:21,132 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) [2024-11-19 01:45:21,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:21,132 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] [2024-11-19 01:45:21,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 01:45:21,332 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 [2024-11-19 01:45:21,333 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:21,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash -664447033, now seen corresponding path program 9 times [2024-11-19 01:45:21,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:21,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824502997] [2024-11-19 01:45:21,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:45:21,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:21,344 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:45:21,344 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:21,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:21,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824502997] [2024-11-19 01:45:21,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824502997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:21,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:21,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:21,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792293545] [2024-11-19 01:45:21,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:21,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:21,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:21,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:21,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:21,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:21,555 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) [2024-11-19 01:45:21,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:21,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:21,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:23,077 INFO L124 PetriNetUnfolderBase]: 4592/8183 cut-off events. [2024-11-19 01:45:23,077 INFO L125 PetriNetUnfolderBase]: For 116545/116545 co-relation queries the response was YES. [2024-11-19 01:45:23,124 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. [2024-11-19 01:45:23,147 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 353 selfloop transitions, 135 changer transitions 0/489 dead transitions. [2024-11-19 01:45:23,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 489 transitions, 8519 flow [2024-11-19 01:45:23,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:45:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:45:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-11-19 01:45:23,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-19 01:45:23,149 INFO L175 Difference]: Start difference. First operand has 222 places, 367 transitions, 5898 flow. Second operand 9 states and 102 transitions. [2024-11-19 01:45:23,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 489 transitions, 8519 flow [2024-11-19 01:45:23,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 489 transitions, 8294 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:45:23,611 INFO L231 Difference]: Finished difference. Result has 230 places, 389 transitions, 6557 flow [2024-11-19 01:45:23,612 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} [2024-11-19 01:45:23,612 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 204 predicate places. [2024-11-19 01:45:23,612 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 389 transitions, 6557 flow [2024-11-19 01:45:23,612 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) [2024-11-19 01:45:23,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:23,612 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] [2024-11-19 01:45:23,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-19 01:45:23,613 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:23,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:23,613 INFO L85 PathProgramCache]: Analyzing trace with hash 592592389, now seen corresponding path program 10 times [2024-11-19 01:45:23,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:23,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663564382] [2024-11-19 01:45:23,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:45:23,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:23,626 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:45:23,626 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:23,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:23,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663564382] [2024-11-19 01:45:23,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663564382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:23,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:23,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:45:23,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818735632] [2024-11-19 01:45:23,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:23,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:45:23,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:23,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:45:23,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:45:23,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:23,720 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) [2024-11-19 01:45:23,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:23,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:23,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:25,692 INFO L124 PetriNetUnfolderBase]: 4880/8687 cut-off events. [2024-11-19 01:45:25,692 INFO L125 PetriNetUnfolderBase]: For 140675/140675 co-relation queries the response was YES. [2024-11-19 01:45:25,749 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. [2024-11-19 01:45:25,778 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 343 selfloop transitions, 129 changer transitions 0/473 dead transitions. [2024-11-19 01:45:25,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 473 transitions, 8610 flow [2024-11-19 01:45:25,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:45:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:45:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-11-19 01:45:25,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 01:45:25,780 INFO L175 Difference]: Start difference. First operand has 230 places, 389 transitions, 6557 flow. Second operand 7 states and 98 transitions. [2024-11-19 01:45:25,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 473 transitions, 8610 flow [2024-11-19 01:45:26,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 473 transitions, 8431 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-19 01:45:26,388 INFO L231 Difference]: Finished difference. Result has 235 places, 405 transitions, 7070 flow [2024-11-19 01:45:26,388 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} [2024-11-19 01:45:26,388 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 209 predicate places. [2024-11-19 01:45:26,389 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 405 transitions, 7070 flow [2024-11-19 01:45:26,389 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) [2024-11-19 01:45:26,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:26,389 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] [2024-11-19 01:45:26,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-19 01:45:26,389 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:26,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:26,390 INFO L85 PathProgramCache]: Analyzing trace with hash -698998731, now seen corresponding path program 11 times [2024-11-19 01:45:26,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:26,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458970689] [2024-11-19 01:45:26,390 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:45:26,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:26,404 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:45:26,404 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:45:26,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:26,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458970689] [2024-11-19 01:45:26,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458970689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:26,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963129046] [2024-11-19 01:45:26,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:45:26,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:26,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:26,624 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) [2024-11-19 01:45:26,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 01:45:26,721 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:45:26,722 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:26,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 01:45:26,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:26,825 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-19 01:45:26,825 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 [2024-11-19 01:45:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:26,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:26,920 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-19 01:45:26,920 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 [2024-11-19 01:45:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:26,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963129046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:45:26,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:45:26,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-19 01:45:26,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791126744] [2024-11-19 01:45:26,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:45:26,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 01:45:26,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:26,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 01:45:26,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:45:26,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:26,938 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) [2024-11-19 01:45:26,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:26,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:26,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:28,790 INFO L124 PetriNetUnfolderBase]: 4745/8431 cut-off events. [2024-11-19 01:45:28,790 INFO L125 PetriNetUnfolderBase]: For 129840/129840 co-relation queries the response was YES. [2024-11-19 01:45:28,853 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. [2024-11-19 01:45:28,882 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 374 selfloop transitions, 135 changer transitions 3/513 dead transitions. [2024-11-19 01:45:28,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 513 transitions, 9412 flow [2024-11-19 01:45:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:45:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 01:45:28,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-11-19 01:45:28,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-11-19 01:45:28,884 INFO L175 Difference]: Start difference. First operand has 235 places, 405 transitions, 7070 flow. Second operand 11 states and 104 transitions. [2024-11-19 01:45:28,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 513 transitions, 9412 flow [2024-11-19 01:45:29,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 513 transitions, 9231 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-11-19 01:45:29,484 INFO L231 Difference]: Finished difference. Result has 246 places, 411 transitions, 7329 flow [2024-11-19 01:45:29,485 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} [2024-11-19 01:45:29,485 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 220 predicate places. [2024-11-19 01:45:29,485 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 411 transitions, 7329 flow [2024-11-19 01:45:29,485 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) [2024-11-19 01:45:29,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:29,485 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] [2024-11-19 01:45:29,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 01:45:29,686 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 [2024-11-19 01:45:29,686 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:29,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:29,686 INFO L85 PathProgramCache]: Analyzing trace with hash 188378157, now seen corresponding path program 9 times [2024-11-19 01:45:29,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:29,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952906354] [2024-11-19 01:45:29,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:45:29,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:29,704 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:45:29,706 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:30,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:30,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952906354] [2024-11-19 01:45:30,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952906354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:30,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:30,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:30,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579721549] [2024-11-19 01:45:30,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:30,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:30,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:30,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:30,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:30,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:30,167 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) [2024-11-19 01:45:30,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:30,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:30,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:32,075 INFO L124 PetriNetUnfolderBase]: 4877/8655 cut-off events. [2024-11-19 01:45:32,075 INFO L125 PetriNetUnfolderBase]: For 144832/144832 co-relation queries the response was YES. [2024-11-19 01:45:32,145 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. [2024-11-19 01:45:32,179 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 353 selfloop transitions, 144 changer transitions 0/498 dead transitions. [2024-11-19 01:45:32,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 498 transitions, 9379 flow [2024-11-19 01:45:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:45:32,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:45:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-11-19 01:45:32,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-19 01:45:32,180 INFO L175 Difference]: Start difference. First operand has 246 places, 411 transitions, 7329 flow. Second operand 9 states and 102 transitions. [2024-11-19 01:45:32,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 498 transitions, 9379 flow [2024-11-19 01:45:32,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 498 transitions, 8991 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-11-19 01:45:32,809 INFO L231 Difference]: Finished difference. Result has 249 places, 427 transitions, 7655 flow [2024-11-19 01:45:32,809 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} [2024-11-19 01:45:32,810 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 223 predicate places. [2024-11-19 01:45:32,810 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 427 transitions, 7655 flow [2024-11-19 01:45:32,810 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) [2024-11-19 01:45:32,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:32,810 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] [2024-11-19 01:45:32,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-19 01:45:32,811 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:32,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:32,811 INFO L85 PathProgramCache]: Analyzing trace with hash 644991095, now seen corresponding path program 12 times [2024-11-19 01:45:32,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:32,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151252153] [2024-11-19 01:45:32,811 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:45:32,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:32,823 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:45:32,823 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:33,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:33,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151252153] [2024-11-19 01:45:33,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151252153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:33,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:33,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:33,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094663405] [2024-11-19 01:45:33,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:33,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:33,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:33,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:33,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:33,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:33,190 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) [2024-11-19 01:45:33,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:33,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:33,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:34,779 INFO L124 PetriNetUnfolderBase]: 4952/8772 cut-off events. [2024-11-19 01:45:34,780 INFO L125 PetriNetUnfolderBase]: For 145786/145786 co-relation queries the response was YES. [2024-11-19 01:45:34,848 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. [2024-11-19 01:45:34,880 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 339 selfloop transitions, 149 changer transitions 0/489 dead transitions. [2024-11-19 01:45:34,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 489 transitions, 9442 flow [2024-11-19 01:45:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:45:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:45:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-11-19 01:45:34,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-11-19 01:45:34,881 INFO L175 Difference]: Start difference. First operand has 249 places, 427 transitions, 7655 flow. Second operand 9 states and 96 transitions. [2024-11-19 01:45:34,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 489 transitions, 9442 flow [2024-11-19 01:45:35,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 489 transitions, 9040 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-11-19 01:45:35,772 INFO L231 Difference]: Finished difference. Result has 254 places, 442 transitions, 7965 flow [2024-11-19 01:45:35,773 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} [2024-11-19 01:45:35,773 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 228 predicate places. [2024-11-19 01:45:35,773 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 442 transitions, 7965 flow [2024-11-19 01:45:35,773 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) [2024-11-19 01:45:35,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:35,774 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] [2024-11-19 01:45:35,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-19 01:45:35,774 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:35,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1839890753, now seen corresponding path program 13 times [2024-11-19 01:45:35,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:35,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426248257] [2024-11-19 01:45:35,775 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:45:35,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:36,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:36,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426248257] [2024-11-19 01:45:36,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426248257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:36,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:36,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:36,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773992694] [2024-11-19 01:45:36,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:36,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:36,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:36,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:36,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:36,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:36,071 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) [2024-11-19 01:45:36,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:36,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:36,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:37,938 INFO L124 PetriNetUnfolderBase]: 4916/8736 cut-off events. [2024-11-19 01:45:37,938 INFO L125 PetriNetUnfolderBase]: For 139133/139133 co-relation queries the response was YES. [2024-11-19 01:45:38,011 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. [2024-11-19 01:45:38,043 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 330 selfloop transitions, 160 changer transitions 0/491 dead transitions. [2024-11-19 01:45:38,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 491 transitions, 9453 flow [2024-11-19 01:45:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:45:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:45:38,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-11-19 01:45:38,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-19 01:45:38,044 INFO L175 Difference]: Start difference. First operand has 254 places, 442 transitions, 7965 flow. Second operand 9 states and 93 transitions. [2024-11-19 01:45:38,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 491 transitions, 9453 flow [2024-11-19 01:45:38,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 491 transitions, 9110 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-11-19 01:45:38,890 INFO L231 Difference]: Finished difference. Result has 259 places, 447 transitions, 8111 flow [2024-11-19 01:45:38,890 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} [2024-11-19 01:45:38,890 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 233 predicate places. [2024-11-19 01:45:38,890 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 447 transitions, 8111 flow [2024-11-19 01:45:38,891 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) [2024-11-19 01:45:38,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:38,891 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] [2024-11-19 01:45:38,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-19 01:45:38,891 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:38,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1242327753, now seen corresponding path program 14 times [2024-11-19 01:45:38,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:38,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833665209] [2024-11-19 01:45:38,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:45:38,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:38,903 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:45:38,903 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:39,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:39,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833665209] [2024-11-19 01:45:39,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833665209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:39,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:39,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:39,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580469201] [2024-11-19 01:45:39,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:39,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:39,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:39,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:39,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:39,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:39,117 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) [2024-11-19 01:45:39,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:39,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:39,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:40,736 INFO L124 PetriNetUnfolderBase]: 4880/8700 cut-off events. [2024-11-19 01:45:40,736 INFO L125 PetriNetUnfolderBase]: For 134179/134179 co-relation queries the response was YES. [2024-11-19 01:45:40,806 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. [2024-11-19 01:45:40,836 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 361 selfloop transitions, 155 changer transitions 3/520 dead transitions. [2024-11-19 01:45:40,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 520 transitions, 9933 flow [2024-11-19 01:45:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:45:40,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:45:40,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-11-19 01:45:40,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-11-19 01:45:40,838 INFO L175 Difference]: Start difference. First operand has 259 places, 447 transitions, 8111 flow. Second operand 9 states and 92 transitions. [2024-11-19 01:45:40,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 520 transitions, 9933 flow [2024-11-19 01:45:41,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 520 transitions, 9556 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-11-19 01:45:41,722 INFO L231 Difference]: Finished difference. Result has 263 places, 450 transitions, 8105 flow [2024-11-19 01:45:41,722 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} [2024-11-19 01:45:41,723 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 237 predicate places. [2024-11-19 01:45:41,723 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 450 transitions, 8105 flow [2024-11-19 01:45:41,723 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) [2024-11-19 01:45:41,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:41,723 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] [2024-11-19 01:45:41,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-19 01:45:41,723 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:41,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:41,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1413500475, now seen corresponding path program 15 times [2024-11-19 01:45:41,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:41,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090053456] [2024-11-19 01:45:41,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:45:41,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:41,741 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:45:41,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:42,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:42,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090053456] [2024-11-19 01:45:42,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090053456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:42,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:42,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:42,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69283907] [2024-11-19 01:45:42,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:42,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:42,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:42,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:42,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:42,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:42,013 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) [2024-11-19 01:45:42,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:42,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:42,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:43,957 INFO L124 PetriNetUnfolderBase]: 4862/8670 cut-off events. [2024-11-19 01:45:43,958 INFO L125 PetriNetUnfolderBase]: For 131167/131167 co-relation queries the response was YES. [2024-11-19 01:45:44,034 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. [2024-11-19 01:45:44,066 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 323 selfloop transitions, 157 changer transitions 7/488 dead transitions. [2024-11-19 01:45:44,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 488 transitions, 9369 flow [2024-11-19 01:45:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:45:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:45:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-19 01:45:44,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-11-19 01:45:44,067 INFO L175 Difference]: Start difference. First operand has 263 places, 450 transitions, 8105 flow. Second operand 9 states and 87 transitions. [2024-11-19 01:45:44,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 488 transitions, 9369 flow [2024-11-19 01:45:44,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 488 transitions, 8964 flow, removed 33 selfloop flow, removed 15 redundant places. [2024-11-19 01:45:44,833 INFO L231 Difference]: Finished difference. Result has 257 places, 447 transitions, 7953 flow [2024-11-19 01:45:44,834 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} [2024-11-19 01:45:44,835 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 231 predicate places. [2024-11-19 01:45:44,835 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 447 transitions, 7953 flow [2024-11-19 01:45:44,835 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) [2024-11-19 01:45:44,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:44,836 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] [2024-11-19 01:45:44,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-19 01:45:44,836 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:44,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:44,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2065828863, now seen corresponding path program 16 times [2024-11-19 01:45:44,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:44,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185088128] [2024-11-19 01:45:44,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:45:44,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:44,849 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:45:44,849 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:44,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:44,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185088128] [2024-11-19 01:45:44,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185088128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:44,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:44,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:45:44,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647788880] [2024-11-19 01:45:44,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:44,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:45:44,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:44,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:45:44,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:45:44,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:44,950 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) [2024-11-19 01:45:44,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:44,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:44,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand