./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:26:13,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:26:13,534 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:26:13,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:26:13,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:26:13,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:26:13,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:26:13,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:26:13,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:26:13,571 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:26:13,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:26:13,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:26:13,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:26:13,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:26:13,573 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:26:13,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:26:13,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:26:13,576 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:26:13,576 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:26:13,576 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:26:13,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:26:13,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:26:13,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:26:13,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:26:13,582 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:26:13,582 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:26:13,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:26:13,582 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:26:13,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:26:13,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:26:13,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:26:13,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:26:13,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:26:13,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:26:13,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:26:13,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:26:13,584 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:26:13,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:26:13,586 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:26:13,587 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:26:13,587 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:26:13,587 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:26:13,587 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2024-10-11 14:26:13,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:26:13,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:26:13,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:26:13,853 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:26:13,853 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:26:13,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-10-11 14:26:15,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:26:15,469 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:26:15,470 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-10-11 14:26:15,478 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/53f1278b9/a4be25fee0c442f8a8e03fa19d8f2d84/FLAGc0ccf8654 [2024-10-11 14:26:15,489 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/53f1278b9/a4be25fee0c442f8a8e03fa19d8f2d84 [2024-10-11 14:26:15,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:26:15,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:26:15,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:26:15,493 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:26:15,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:26:15,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f0cd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15, skipping insertion in model container [2024-10-11 14:26:15,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,528 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:26:15,751 WARN L248 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-chromosome-opt-symm.wvr.c[2592,2605] [2024-10-11 14:26:15,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:26:15,768 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:26:15,793 WARN L248 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-chromosome-opt-symm.wvr.c[2592,2605] [2024-10-11 14:26:15,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:26:15,812 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:26:15,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15 WrapperNode [2024-10-11 14:26:15,813 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:26:15,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:26:15,814 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:26:15,814 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:26:15,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,855 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 169 [2024-10-11 14:26:15,855 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:26:15,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:26:15,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:26:15,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:26:15,868 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,871 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,885 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]. [2024-10-11 14:26:15,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,886 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,909 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:26:15,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:26:15,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:26:15,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:26:15,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (1/1) ... [2024-10-11 14:26:15,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:26:15,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:26:15,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:26:15,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:26:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:26:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:26:16,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:26:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:26:16,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:26:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:26:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:26:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:26:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:26:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:26:16,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:26:16,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:26:16,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:26:16,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:26:16,068 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:26:16,180 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:26:16,182 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:26:16,540 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:26:16,540 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:26:16,744 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:26:16,744 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 14:26:16,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:16 BoogieIcfgContainer [2024-10-11 14:26:16,744 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:26:16,750 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:26:16,750 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:26:16,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:26:16,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:15" (1/3) ... [2024-10-11 14:26:16,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22212061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:16, skipping insertion in model container [2024-10-11 14:26:16,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:15" (2/3) ... [2024-10-11 14:26:16,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22212061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:16, skipping insertion in model container [2024-10-11 14:26:16,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:16" (3/3) ... [2024-10-11 14:26:16,759 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2024-10-11 14:26:16,775 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:26:16,775 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:26:16,775 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:26:16,821 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 14:26:16,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 70 flow [2024-10-11 14:26:16,896 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-10-11 14:26:16,897 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:26:16,899 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 4. Compared 29 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. [2024-10-11 14:26:16,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 70 flow [2024-10-11 14:26:16,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 25 transitions, 62 flow [2024-10-11 14:26:16,913 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:26:16,919 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;@4384a417, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:26:16,919 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-11 14:26:16,930 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:26:16,931 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2024-10-11 14:26:16,931 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:26:16,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:16,932 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:16,932 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:16,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash -863716002, now seen corresponding path program 1 times [2024-10-11 14:26:16,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:16,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341761041] [2024-10-11 14:26:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:16,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:17,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:17,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341761041] [2024-10-11 14:26:17,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341761041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:17,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:17,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:26:17,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280728747] [2024-10-11 14:26:17,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:17,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:17,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:17,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:17,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:17,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:17,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:17,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:17,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:17,620 INFO L124 PetriNetUnfolderBase]: 237/396 cut-off events. [2024-10-11 14:26:17,621 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-10-11 14:26:17,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 396 events. 237/396 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1432 event pairs, 68 based on Foata normal form. 5/301 useless extension candidates. Maximal degree in co-relation 720. Up to 183 conditions per place. [2024-10-11 14:26:17,629 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 46 selfloop transitions, 5 changer transitions 2/54 dead transitions. [2024-10-11 14:26:17,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 54 transitions, 244 flow [2024-10-11 14:26:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-10-11 14:26:17,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-10-11 14:26:17,649 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 5 states and 69 transitions. [2024-10-11 14:26:17,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 54 transitions, 244 flow [2024-10-11 14:26:17,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:26:17,660 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 78 flow [2024-10-11 14:26:17,662 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2024-10-11 14:26:17,667 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2024-10-11 14:26:17,667 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 78 flow [2024-10-11 14:26:17,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:17,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:17,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:17,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:26:17,668 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:17,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:17,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1019207930, now seen corresponding path program 2 times [2024-10-11 14:26:17,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:17,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143908606] [2024-10-11 14:26:17,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:17,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:17,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:17,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:17,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143908606] [2024-10-11 14:26:17,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143908606] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:17,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:17,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:26:17,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427338370] [2024-10-11 14:26:17,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:17,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:17,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:17,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:17,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:17,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:17,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:17,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:17,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:17,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:18,026 INFO L124 PetriNetUnfolderBase]: 461/788 cut-off events. [2024-10-11 14:26:18,028 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-10-11 14:26:18,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1770 conditions, 788 events. 461/788 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3348 event pairs, 176 based on Foata normal form. 4/691 useless extension candidates. Maximal degree in co-relation 614. Up to 395 conditions per place. [2024-10-11 14:26:18,036 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 50 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-10-11 14:26:18,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 56 transitions, 275 flow [2024-10-11 14:26:18,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:18,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-10-11 14:26:18,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-10-11 14:26:18,038 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 78 flow. Second operand 5 states and 65 transitions. [2024-10-11 14:26:18,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 56 transitions, 275 flow [2024-10-11 14:26:18,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 56 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:26:18,040 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 96 flow [2024-10-11 14:26:18,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-10-11 14:26:18,043 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2024-10-11 14:26:18,044 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 96 flow [2024-10-11 14:26:18,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:18,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:18,045 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:18,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:26:18,046 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:18,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:18,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1072340398, now seen corresponding path program 3 times [2024-10-11 14:26:18,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:18,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192436732] [2024-10-11 14:26:18,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:18,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:18,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:18,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192436732] [2024-10-11 14:26:18,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192436732] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:18,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:18,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:26:18,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849532489] [2024-10-11 14:26:18,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:18,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:18,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:18,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:18,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:18,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:18,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:18,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:18,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:18,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:18,324 INFO L124 PetriNetUnfolderBase]: 601/1029 cut-off events. [2024-10-11 14:26:18,325 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-10-11 14:26:18,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2503 conditions, 1029 events. 601/1029 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4708 event pairs, 207 based on Foata normal form. 23/1051 useless extension candidates. Maximal degree in co-relation 885. Up to 766 conditions per place. [2024-10-11 14:26:18,331 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 45 selfloop transitions, 4 changer transitions 2/52 dead transitions. [2024-10-11 14:26:18,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 273 flow [2024-10-11 14:26:18,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:26:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:26:18,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-10-11 14:26:18,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-10-11 14:26:18,334 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 96 flow. Second operand 4 states and 58 transitions. [2024-10-11 14:26:18,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 273 flow [2024-10-11 14:26:18,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:26:18,339 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 134 flow [2024-10-11 14:26:18,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-10-11 14:26:18,340 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2024-10-11 14:26:18,340 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 134 flow [2024-10-11 14:26:18,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:18,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:18,341 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:18,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:26:18,341 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:18,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash 921043552, now seen corresponding path program 4 times [2024-10-11 14:26:18,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:18,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726377262] [2024-10-11 14:26:18,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:18,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:18,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:18,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726377262] [2024-10-11 14:26:18,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726377262] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:18,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:18,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:26:18,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436119265] [2024-10-11 14:26:18,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:18,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:18,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:18,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:18,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:18,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:18,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:18,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:18,628 INFO L124 PetriNetUnfolderBase]: 620/1051 cut-off events. [2024-10-11 14:26:18,628 INFO L125 PetriNetUnfolderBase]: For 781/781 co-relation queries the response was YES. [2024-10-11 14:26:18,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 1051 events. 620/1051 cut-off events. For 781/781 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4721 event pairs, 254 based on Foata normal form. 20/1069 useless extension candidates. Maximal degree in co-relation 1537. Up to 778 conditions per place. [2024-10-11 14:26:18,635 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 47 selfloop transitions, 6 changer transitions 3/57 dead transitions. [2024-10-11 14:26:18,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 57 transitions, 336 flow [2024-10-11 14:26:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:26:18,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:26:18,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-10-11 14:26:18,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-10-11 14:26:18,639 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 134 flow. Second operand 4 states and 59 transitions. [2024-10-11 14:26:18,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 57 transitions, 336 flow [2024-10-11 14:26:18,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:26:18,643 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 194 flow [2024-10-11 14:26:18,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-10-11 14:26:18,645 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-10-11 14:26:18,645 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 194 flow [2024-10-11 14:26:18,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:18,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:18,646 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:18,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:26:18,647 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:18,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash -486151816, now seen corresponding path program 1 times [2024-10-11 14:26:18,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:18,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278559316] [2024-10-11 14:26:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:18,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:18,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278559316] [2024-10-11 14:26:18,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278559316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:18,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:18,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:26:18,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579805832] [2024-10-11 14:26:18,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:18,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:18,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:18,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:18,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:18,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:18,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:18,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:18,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:18,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:18,917 INFO L124 PetriNetUnfolderBase]: 559/944 cut-off events. [2024-10-11 14:26:18,917 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2024-10-11 14:26:18,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 944 events. 559/944 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4241 event pairs, 183 based on Foata normal form. 16/958 useless extension candidates. Maximal degree in co-relation 937. Up to 479 conditions per place. [2024-10-11 14:26:18,923 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 56 selfloop transitions, 8 changer transitions 3/68 dead transitions. [2024-10-11 14:26:18,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 447 flow [2024-10-11 14:26:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:26:18,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:26:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-10-11 14:26:18,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-10-11 14:26:18,926 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 194 flow. Second operand 4 states and 66 transitions. [2024-10-11 14:26:18,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 447 flow [2024-10-11 14:26:18,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 441 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-11 14:26:18,934 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 210 flow [2024-10-11 14:26:18,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-10-11 14:26:18,934 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-10-11 14:26:18,935 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 210 flow [2024-10-11 14:26:18,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:18,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:18,935 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:18,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:26:18,935 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:18,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:18,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1435951390, now seen corresponding path program 1 times [2024-10-11 14:26:18,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:18,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855890821] [2024-10-11 14:26:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:18,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:18,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:18,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855890821] [2024-10-11 14:26:18,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855890821] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:18,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:18,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:26:18,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368303029] [2024-10-11 14:26:18,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:18,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:18,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:18,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:18,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:18,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:18,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:18,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:19,159 INFO L124 PetriNetUnfolderBase]: 497/831 cut-off events. [2024-10-11 14:26:19,160 INFO L125 PetriNetUnfolderBase]: For 1391/1391 co-relation queries the response was YES. [2024-10-11 14:26:19,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 831 events. 497/831 cut-off events. For 1391/1391 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3428 event pairs, 183 based on Foata normal form. 18/847 useless extension candidates. Maximal degree in co-relation 2284. Up to 441 conditions per place. [2024-10-11 14:26:19,165 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 52 selfloop transitions, 8 changer transitions 2/63 dead transitions. [2024-10-11 14:26:19,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 447 flow [2024-10-11 14:26:19,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:26:19,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:26:19,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-10-11 14:26:19,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-10-11 14:26:19,166 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 210 flow. Second operand 4 states and 62 transitions. [2024-10-11 14:26:19,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 447 flow [2024-10-11 14:26:19,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 421 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-11 14:26:19,170 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 214 flow [2024-10-11 14:26:19,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-10-11 14:26:19,175 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-10-11 14:26:19,175 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 214 flow [2024-10-11 14:26:19,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:19,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:19,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:19,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:26:19,176 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:19,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:19,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1602538200, now seen corresponding path program 1 times [2024-10-11 14:26:19,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:19,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326006090] [2024-10-11 14:26:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:19,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:19,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326006090] [2024-10-11 14:26:19,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326006090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:19,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:19,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:26:19,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186997428] [2024-10-11 14:26:19,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:19,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:26:19,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:19,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:26:19,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:26:19,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:19,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:19,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:19,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:19,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:19,342 INFO L124 PetriNetUnfolderBase]: 495/827 cut-off events. [2024-10-11 14:26:19,342 INFO L125 PetriNetUnfolderBase]: For 1280/1280 co-relation queries the response was YES. [2024-10-11 14:26:19,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 827 events. 495/827 cut-off events. For 1280/1280 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3422 event pairs, 328 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 2325. Up to 819 conditions per place. [2024-10-11 14:26:19,348 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 34 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2024-10-11 14:26:19,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 294 flow [2024-10-11 14:26:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:26:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:26:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-10-11 14:26:19,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-10-11 14:26:19,350 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 214 flow. Second operand 3 states and 37 transitions. [2024-10-11 14:26:19,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 294 flow [2024-10-11 14:26:19,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 282 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-11 14:26:19,353 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 224 flow [2024-10-11 14:26:19,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-10-11 14:26:19,354 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2024-10-11 14:26:19,355 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 224 flow [2024-10-11 14:26:19,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:19,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:19,356 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] [2024-10-11 14:26:19,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:26:19,356 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:19,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:19,356 INFO L85 PathProgramCache]: Analyzing trace with hash -168502724, now seen corresponding path program 1 times [2024-10-11 14:26:19,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:19,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645777280] [2024-10-11 14:26:19,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:19,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:19,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:26:19,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:19,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645777280] [2024-10-11 14:26:19,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645777280] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:26:19,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261428951] [2024-10-11 14:26:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:19,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:19,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:26:19,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:26:19,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:26:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:19,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 14:26:19,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:26:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:26:19,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:26:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:26:19,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261428951] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:26:19,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:26:19,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-11 14:26:19,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333224682] [2024-10-11 14:26:19,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:26:19,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:26:19,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:19,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:26:19,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:26:19,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:19,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 224 flow. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2024-10-11 14:26:19,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:19,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:19,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:19,783 INFO L124 PetriNetUnfolderBase]: 495/833 cut-off events. [2024-10-11 14:26:19,785 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2024-10-11 14:26:19,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 833 events. 495/833 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3411 event pairs, 328 based on Foata normal form. 3/835 useless extension candidates. Maximal degree in co-relation 2434. Up to 819 conditions per place. [2024-10-11 14:26:19,792 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 34 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2024-10-11 14:26:19,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 336 flow [2024-10-11 14:26:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:26:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:26:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2024-10-11 14:26:19,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-10-11 14:26:19,794 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 224 flow. Second operand 6 states and 56 transitions. [2024-10-11 14:26:19,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 336 flow [2024-10-11 14:26:19,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:26:19,799 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 286 flow [2024-10-11 14:26:19,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-10-11 14:26:19,800 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-10-11 14:26:19,801 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 286 flow [2024-10-11 14:26:19,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2024-10-11 14:26:19,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:19,802 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:19,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:26:20,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:20,003 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:20,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1918512510, now seen corresponding path program 2 times [2024-10-11 14:26:20,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:20,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118984368] [2024-10-11 14:26:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:20,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 14:26:20,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:20,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118984368] [2024-10-11 14:26:20,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118984368] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:26:20,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687852046] [2024-10-11 14:26:20,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:26:20,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:20,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:26:20,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:26:20,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:26:20,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 14:26:20,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:26:20,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 14:26:20,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:26:20,511 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-11 14:26:20,512 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 103 treesize of output 64 [2024-10-11 14:26:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 14:26:20,620 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:26:20,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687852046] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:20,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:26:20,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-10-11 14:26:20,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183641906] [2024-10-11 14:26:20,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:20,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:26:20,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:20,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:26:20,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:26:20,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:20,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 286 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:20,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:20,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:20,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:21,156 INFO L124 PetriNetUnfolderBase]: 653/1118 cut-off events. [2024-10-11 14:26:21,157 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2024-10-11 14:26:21,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3291 conditions, 1118 events. 653/1118 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5308 event pairs, 121 based on Foata normal form. 6/1123 useless extension candidates. Maximal degree in co-relation 3220. Up to 419 conditions per place. [2024-10-11 14:26:21,165 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 90 selfloop transitions, 10 changer transitions 16/117 dead transitions. [2024-10-11 14:26:21,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 117 transitions, 808 flow [2024-10-11 14:26:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:26:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:26:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-10-11 14:26:21,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45634920634920634 [2024-10-11 14:26:21,167 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 286 flow. Second operand 9 states and 115 transitions. [2024-10-11 14:26:21,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 117 transitions, 808 flow [2024-10-11 14:26:21,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 117 transitions, 792 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 14:26:21,172 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 325 flow [2024-10-11 14:26:21,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=325, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2024-10-11 14:26:21,173 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-10-11 14:26:21,173 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 325 flow [2024-10-11 14:26:21,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:21,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:21,174 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:21,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 14:26:21,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:21,374 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:21,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:21,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1697157572, now seen corresponding path program 3 times [2024-10-11 14:26:21,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:21,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879005067] [2024-10-11 14:26:21,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:21,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 14:26:21,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:21,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879005067] [2024-10-11 14:26:21,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879005067] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:26:21,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711364553] [2024-10-11 14:26:21,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:26:21,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:21,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:26:21,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:26:21,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:26:21,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-11 14:26:21,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:26:21,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 14:26:21,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:26:21,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:26:21,756 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 118 treesize of output 74 [2024-10-11 14:26:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 14:26:21,900 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:26:21,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711364553] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:21,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:26:21,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-10-11 14:26:21,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78182678] [2024-10-11 14:26:21,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:21,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:26:21,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:21,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:26:21,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:26:21,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:21,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:21,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:21,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:21,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:22,696 INFO L124 PetriNetUnfolderBase]: 774/1339 cut-off events. [2024-10-11 14:26:22,697 INFO L125 PetriNetUnfolderBase]: For 2294/2294 co-relation queries the response was YES. [2024-10-11 14:26:22,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4438 conditions, 1339 events. 774/1339 cut-off events. For 2294/2294 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6805 event pairs, 131 based on Foata normal form. 5/1343 useless extension candidates. Maximal degree in co-relation 4369. Up to 433 conditions per place. [2024-10-11 14:26:22,706 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 125 selfloop transitions, 26 changer transitions 6/158 dead transitions. [2024-10-11 14:26:22,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 158 transitions, 1118 flow [2024-10-11 14:26:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:26:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:26:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-10-11 14:26:22,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44387755102040816 [2024-10-11 14:26:22,708 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 325 flow. Second operand 14 states and 174 transitions. [2024-10-11 14:26:22,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 158 transitions, 1118 flow [2024-10-11 14:26:22,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 158 transitions, 1048 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-10-11 14:26:22,716 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 526 flow [2024-10-11 14:26:22,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=526, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-10-11 14:26:22,717 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 52 predicate places. [2024-10-11 14:26:22,717 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 526 flow [2024-10-11 14:26:22,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:22,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:22,718 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:22,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:26:22,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:22,919 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:22,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:22,920 INFO L85 PathProgramCache]: Analyzing trace with hash -644626634, now seen corresponding path program 4 times [2024-10-11 14:26:22,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:22,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738108271] [2024-10-11 14:26:22,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:22,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 14:26:23,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:23,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738108271] [2024-10-11 14:26:23,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738108271] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:26:23,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014691653] [2024-10-11 14:26:23,063 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:26:23,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:23,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:26:23,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:26:23,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:26:23,148 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:26:23,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:26:23,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 14:26:23,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:26:23,362 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-11 14:26:23,362 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 103 treesize of output 64 [2024-10-11 14:26:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 14:26:23,441 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:26:23,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014691653] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:23,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:26:23,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-10-11 14:26:23,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968470076] [2024-10-11 14:26:23,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:23,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:26:23,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:23,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:26:23,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:26:23,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:23,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 526 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:23,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:23,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:23,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:23,997 INFO L124 PetriNetUnfolderBase]: 775/1345 cut-off events. [2024-10-11 14:26:23,997 INFO L125 PetriNetUnfolderBase]: For 3330/3330 co-relation queries the response was YES. [2024-10-11 14:26:24,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4924 conditions, 1345 events. 775/1345 cut-off events. For 3330/3330 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6817 event pairs, 171 based on Foata normal form. 6/1350 useless extension candidates. Maximal degree in co-relation 4849. Up to 433 conditions per place. [2024-10-11 14:26:24,007 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 100 selfloop transitions, 22 changer transitions 12/135 dead transitions. [2024-10-11 14:26:24,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 135 transitions, 1110 flow [2024-10-11 14:26:24,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:26:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:26:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-10-11 14:26:24,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-10-11 14:26:24,008 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 526 flow. Second operand 10 states and 132 transitions. [2024-10-11 14:26:24,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 135 transitions, 1110 flow [2024-10-11 14:26:24,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 135 transitions, 1046 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-10-11 14:26:24,021 INFO L231 Difference]: Finished difference. Result has 87 places, 67 transitions, 551 flow [2024-10-11 14:26:24,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=551, PETRI_PLACES=87, PETRI_TRANSITIONS=67} [2024-10-11 14:26:24,022 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2024-10-11 14:26:24,022 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 67 transitions, 551 flow [2024-10-11 14:26:24,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:24,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:24,023 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:24,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 14:26:24,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 14:26:24,228 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:24,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:24,228 INFO L85 PathProgramCache]: Analyzing trace with hash 637162094, now seen corresponding path program 5 times [2024-10-11 14:26:24,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:24,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006859765] [2024-10-11 14:26:24,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:24,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 14:26:24,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:24,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006859765] [2024-10-11 14:26:24,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006859765] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:26:24,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619211148] [2024-10-11 14:26:24,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:26:24,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:24,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:26:24,376 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:26:24,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:26:24,498 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 14:26:24,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:26:24,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:26:24,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:26:24,570 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 14:26:24,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:26:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 14:26:24,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619211148] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:26:24,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:26:24,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-11 14:26:24,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490254556] [2024-10-11 14:26:24,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:26:24,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:26:24,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:24,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:26:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:26:24,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:24,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 67 transitions, 551 flow. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:24,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:24,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:24,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:24,824 INFO L124 PetriNetUnfolderBase]: 760/1316 cut-off events. [2024-10-11 14:26:24,825 INFO L125 PetriNetUnfolderBase]: For 4053/4053 co-relation queries the response was YES. [2024-10-11 14:26:24,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4896 conditions, 1316 events. 760/1316 cut-off events. For 4053/4053 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6399 event pairs, 517 based on Foata normal form. 1/1316 useless extension candidates. Maximal degree in co-relation 4809. Up to 1293 conditions per place. [2024-10-11 14:26:24,834 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 56 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-10-11 14:26:24,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 69 transitions, 699 flow [2024-10-11 14:26:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:26:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:26:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 57 transitions. [2024-10-11 14:26:24,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29081632653061223 [2024-10-11 14:26:24,836 INFO L175 Difference]: Start difference. First operand has 87 places, 67 transitions, 551 flow. Second operand 7 states and 57 transitions. [2024-10-11 14:26:24,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 69 transitions, 699 flow [2024-10-11 14:26:24,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 69 transitions, 658 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-11 14:26:24,848 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 556 flow [2024-10-11 14:26:24,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=556, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-10-11 14:26:24,848 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 59 predicate places. [2024-10-11 14:26:24,848 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 556 flow [2024-10-11 14:26:24,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:24,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:24,849 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:24,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 14:26:25,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 14:26:25,050 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:25,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:25,050 INFO L85 PathProgramCache]: Analyzing trace with hash -580202372, now seen corresponding path program 6 times [2024-10-11 14:26:25,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:25,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352437935] [2024-10-11 14:26:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:25,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:25,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:25,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352437935] [2024-10-11 14:26:25,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352437935] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:25,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:25,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:25,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441325019] [2024-10-11 14:26:25,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:25,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:25,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:25,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:25,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:25,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:25,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 556 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:25,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:25,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:25,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:27,335 INFO L124 PetriNetUnfolderBase]: 1204/2128 cut-off events. [2024-10-11 14:26:27,335 INFO L125 PetriNetUnfolderBase]: For 4645/4645 co-relation queries the response was YES. [2024-10-11 14:26:27,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 2128 events. 1204/2128 cut-off events. For 4645/4645 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11931 event pairs, 65 based on Foata normal form. 6/2134 useless extension candidates. Maximal degree in co-relation 7193. Up to 353 conditions per place. [2024-10-11 14:26:27,350 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 146 selfloop transitions, 65 changer transitions 17/229 dead transitions. [2024-10-11 14:26:27,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 229 transitions, 1789 flow [2024-10-11 14:26:27,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 14:26:27,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 14:26:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 249 transitions. [2024-10-11 14:26:27,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-10-11 14:26:27,352 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 556 flow. Second operand 24 states and 249 transitions. [2024-10-11 14:26:27,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 229 transitions, 1789 flow [2024-10-11 14:26:27,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 229 transitions, 1765 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-11 14:26:27,371 INFO L231 Difference]: Finished difference. Result has 110 places, 104 transitions, 1027 flow [2024-10-11 14:26:27,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1027, PETRI_PLACES=110, PETRI_TRANSITIONS=104} [2024-10-11 14:26:27,371 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 84 predicate places. [2024-10-11 14:26:27,371 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 1027 flow [2024-10-11 14:26:27,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:27,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:27,372 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:27,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 14:26:27,372 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:27,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:27,372 INFO L85 PathProgramCache]: Analyzing trace with hash -180405476, now seen corresponding path program 7 times [2024-10-11 14:26:27,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:27,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680844810] [2024-10-11 14:26:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:27,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:28,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:28,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680844810] [2024-10-11 14:26:28,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680844810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:28,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:28,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:28,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197057186] [2024-10-11 14:26:28,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:28,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:28,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:28,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:28,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:28,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:28,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 1027 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:28,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:28,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:28,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:29,266 INFO L124 PetriNetUnfolderBase]: 1384/2445 cut-off events. [2024-10-11 14:26:29,267 INFO L125 PetriNetUnfolderBase]: For 9071/9071 co-relation queries the response was YES. [2024-10-11 14:26:29,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9782 conditions, 2445 events. 1384/2445 cut-off events. For 9071/9071 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 14258 event pairs, 138 based on Foata normal form. 1/2446 useless extension candidates. Maximal degree in co-relation 9689. Up to 592 conditions per place. [2024-10-11 14:26:29,294 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 154 selfloop transitions, 78 changer transitions 10/243 dead transitions. [2024-10-11 14:26:29,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 243 transitions, 2371 flow [2024-10-11 14:26:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 14:26:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 14:26:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 231 transitions. [2024-10-11 14:26:29,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-10-11 14:26:29,297 INFO L175 Difference]: Start difference. First operand has 110 places, 104 transitions, 1027 flow. Second operand 21 states and 231 transitions. [2024-10-11 14:26:29,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 243 transitions, 2371 flow [2024-10-11 14:26:29,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 243 transitions, 2176 flow, removed 65 selfloop flow, removed 13 redundant places. [2024-10-11 14:26:29,341 INFO L231 Difference]: Finished difference. Result has 126 places, 142 transitions, 1592 flow [2024-10-11 14:26:29,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1592, PETRI_PLACES=126, PETRI_TRANSITIONS=142} [2024-10-11 14:26:29,341 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 100 predicate places. [2024-10-11 14:26:29,341 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 142 transitions, 1592 flow [2024-10-11 14:26:29,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:29,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:29,342 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:29,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 14:26:29,342 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:29,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1220880394, now seen corresponding path program 8 times [2024-10-11 14:26:29,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:29,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548961163] [2024-10-11 14:26:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:29,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:29,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:29,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548961163] [2024-10-11 14:26:29,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548961163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:29,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:29,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:29,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333436737] [2024-10-11 14:26:29,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:29,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:29,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:29,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:29,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:29,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:29,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 142 transitions, 1592 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:29,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:29,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:29,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:30,933 INFO L124 PetriNetUnfolderBase]: 1598/2829 cut-off events. [2024-10-11 14:26:30,933 INFO L125 PetriNetUnfolderBase]: For 12566/12566 co-relation queries the response was YES. [2024-10-11 14:26:30,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12023 conditions, 2829 events. 1598/2829 cut-off events. For 12566/12566 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17152 event pairs, 206 based on Foata normal form. 1/2830 useless extension candidates. Maximal degree in co-relation 11921. Up to 703 conditions per place. [2024-10-11 14:26:30,957 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 165 selfloop transitions, 112 changer transitions 10/288 dead transitions. [2024-10-11 14:26:30,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 288 transitions, 3083 flow [2024-10-11 14:26:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 14:26:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 14:26:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 256 transitions. [2024-10-11 14:26:30,959 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39751552795031053 [2024-10-11 14:26:30,959 INFO L175 Difference]: Start difference. First operand has 126 places, 142 transitions, 1592 flow. Second operand 23 states and 256 transitions. [2024-10-11 14:26:30,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 288 transitions, 3083 flow [2024-10-11 14:26:31,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 288 transitions, 2895 flow, removed 86 selfloop flow, removed 4 redundant places. [2024-10-11 14:26:31,025 INFO L231 Difference]: Finished difference. Result has 153 places, 185 transitions, 2293 flow [2024-10-11 14:26:31,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2293, PETRI_PLACES=153, PETRI_TRANSITIONS=185} [2024-10-11 14:26:31,027 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 127 predicate places. [2024-10-11 14:26:31,028 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 185 transitions, 2293 flow [2024-10-11 14:26:31,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:31,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:31,028 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:31,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 14:26:31,028 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:31,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash 354824326, now seen corresponding path program 9 times [2024-10-11 14:26:31,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:31,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338862330] [2024-10-11 14:26:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:31,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:31,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338862330] [2024-10-11 14:26:31,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338862330] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:31,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:31,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:31,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419158926] [2024-10-11 14:26:31,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:31,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:31,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:31,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:31,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:31,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 185 transitions, 2293 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:31,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:31,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:31,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:32,682 INFO L124 PetriNetUnfolderBase]: 1604/2840 cut-off events. [2024-10-11 14:26:32,682 INFO L125 PetriNetUnfolderBase]: For 15636/15636 co-relation queries the response was YES. [2024-10-11 14:26:32,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13076 conditions, 2840 events. 1604/2840 cut-off events. For 15636/15636 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 17162 event pairs, 179 based on Foata normal form. 1/2841 useless extension candidates. Maximal degree in co-relation 12966. Up to 703 conditions per place. [2024-10-11 14:26:32,700 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 174 selfloop transitions, 120 changer transitions 10/305 dead transitions. [2024-10-11 14:26:32,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 305 transitions, 3533 flow [2024-10-11 14:26:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 14:26:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-11 14:26:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 276 transitions. [2024-10-11 14:26:32,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3942857142857143 [2024-10-11 14:26:32,703 INFO L175 Difference]: Start difference. First operand has 153 places, 185 transitions, 2293 flow. Second operand 25 states and 276 transitions. [2024-10-11 14:26:32,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 305 transitions, 3533 flow [2024-10-11 14:26:32,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 305 transitions, 3369 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-10-11 14:26:32,792 INFO L231 Difference]: Finished difference. Result has 175 places, 193 transitions, 2570 flow [2024-10-11 14:26:32,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2570, PETRI_PLACES=175, PETRI_TRANSITIONS=193} [2024-10-11 14:26:32,793 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 149 predicate places. [2024-10-11 14:26:32,793 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 193 transitions, 2570 flow [2024-10-11 14:26:32,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:32,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:32,794 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:32,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 14:26:32,794 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:32,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash 711426076, now seen corresponding path program 10 times [2024-10-11 14:26:32,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:32,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84281039] [2024-10-11 14:26:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:32,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:33,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:33,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84281039] [2024-10-11 14:26:33,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84281039] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:33,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:33,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:33,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100043736] [2024-10-11 14:26:33,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:33,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:33,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:33,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:33,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:33,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:33,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 193 transitions, 2570 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:33,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:33,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:33,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:34,177 INFO L124 PetriNetUnfolderBase]: 1733/3129 cut-off events. [2024-10-11 14:26:34,177 INFO L125 PetriNetUnfolderBase]: For 18378/18378 co-relation queries the response was YES. [2024-10-11 14:26:34,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14529 conditions, 3129 events. 1733/3129 cut-off events. For 18378/18378 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 19715 event pairs, 226 based on Foata normal form. 1/3130 useless extension candidates. Maximal degree in co-relation 14416. Up to 941 conditions per place. [2024-10-11 14:26:34,202 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 152 selfloop transitions, 115 changer transitions 9/277 dead transitions. [2024-10-11 14:26:34,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 277 transitions, 3656 flow [2024-10-11 14:26:34,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 14:26:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 14:26:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 193 transitions. [2024-10-11 14:26:34,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38293650793650796 [2024-10-11 14:26:34,204 INFO L175 Difference]: Start difference. First operand has 175 places, 193 transitions, 2570 flow. Second operand 18 states and 193 transitions. [2024-10-11 14:26:34,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 277 transitions, 3656 flow [2024-10-11 14:26:34,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 277 transitions, 3398 flow, removed 43 selfloop flow, removed 18 redundant places. [2024-10-11 14:26:34,338 INFO L231 Difference]: Finished difference. Result has 178 places, 202 transitions, 2792 flow [2024-10-11 14:26:34,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2792, PETRI_PLACES=178, PETRI_TRANSITIONS=202} [2024-10-11 14:26:34,339 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 152 predicate places. [2024-10-11 14:26:34,339 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 202 transitions, 2792 flow [2024-10-11 14:26:34,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:34,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:34,339 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:34,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 14:26:34,340 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:34,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash 685650592, now seen corresponding path program 11 times [2024-10-11 14:26:34,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:34,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139718291] [2024-10-11 14:26:34,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:34,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:35,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:35,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139718291] [2024-10-11 14:26:35,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139718291] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:35,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:35,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:35,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902133776] [2024-10-11 14:26:35,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:35,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:35,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:35,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:35,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:35,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:35,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 202 transitions, 2792 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:35,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:35,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:35,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:35,937 INFO L124 PetriNetUnfolderBase]: 1767/3189 cut-off events. [2024-10-11 14:26:35,938 INFO L125 PetriNetUnfolderBase]: For 19576/19576 co-relation queries the response was YES. [2024-10-11 14:26:35,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14972 conditions, 3189 events. 1767/3189 cut-off events. For 19576/19576 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20269 event pairs, 254 based on Foata normal form. 1/3190 useless extension candidates. Maximal degree in co-relation 14855. Up to 953 conditions per place. [2024-10-11 14:26:35,958 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 170 selfloop transitions, 119 changer transitions 10/300 dead transitions. [2024-10-11 14:26:35,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 300 transitions, 3855 flow [2024-10-11 14:26:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 14:26:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 14:26:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 242 transitions. [2024-10-11 14:26:35,959 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-10-11 14:26:35,960 INFO L175 Difference]: Start difference. First operand has 178 places, 202 transitions, 2792 flow. Second operand 22 states and 242 transitions. [2024-10-11 14:26:35,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 300 transitions, 3855 flow [2024-10-11 14:26:36,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 300 transitions, 3683 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-10-11 14:26:36,071 INFO L231 Difference]: Finished difference. Result has 190 places, 205 transitions, 2976 flow [2024-10-11 14:26:36,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2648, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2976, PETRI_PLACES=190, PETRI_TRANSITIONS=205} [2024-10-11 14:26:36,072 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 164 predicate places. [2024-10-11 14:26:36,072 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 205 transitions, 2976 flow [2024-10-11 14:26:36,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:36,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:36,072 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:36,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 14:26:36,072 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:36,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:36,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1120903812, now seen corresponding path program 12 times [2024-10-11 14:26:36,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:36,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989906836] [2024-10-11 14:26:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:36,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:36,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:36,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989906836] [2024-10-11 14:26:36,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989906836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:36,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:36,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:36,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335930273] [2024-10-11 14:26:36,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:36,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:36,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:36,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:36,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:36,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 205 transitions, 2976 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:36,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:36,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:36,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:37,472 INFO L124 PetriNetUnfolderBase]: 1848/3365 cut-off events. [2024-10-11 14:26:37,472 INFO L125 PetriNetUnfolderBase]: For 21557/21557 co-relation queries the response was YES. [2024-10-11 14:26:37,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15865 conditions, 3365 events. 1848/3365 cut-off events. For 21557/21557 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 21852 event pairs, 290 based on Foata normal form. 1/3366 useless extension candidates. Maximal degree in co-relation 15747. Up to 898 conditions per place. [2024-10-11 14:26:37,503 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 164 selfloop transitions, 117 changer transitions 9/291 dead transitions. [2024-10-11 14:26:37,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 291 transitions, 4001 flow [2024-10-11 14:26:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 14:26:37,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 14:26:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 212 transitions. [2024-10-11 14:26:37,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-10-11 14:26:37,505 INFO L175 Difference]: Start difference. First operand has 190 places, 205 transitions, 2976 flow. Second operand 20 states and 212 transitions. [2024-10-11 14:26:37,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 291 transitions, 4001 flow [2024-10-11 14:26:37,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 291 transitions, 3807 flow, removed 15 selfloop flow, removed 18 redundant places. [2024-10-11 14:26:37,598 INFO L231 Difference]: Finished difference. Result has 193 places, 209 transitions, 3109 flow [2024-10-11 14:26:37,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3109, PETRI_PLACES=193, PETRI_TRANSITIONS=209} [2024-10-11 14:26:37,599 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 167 predicate places. [2024-10-11 14:26:37,599 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 209 transitions, 3109 flow [2024-10-11 14:26:37,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:37,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:37,600 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:37,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 14:26:37,600 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:37,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash -973873094, now seen corresponding path program 13 times [2024-10-11 14:26:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:37,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536664455] [2024-10-11 14:26:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:38,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:38,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536664455] [2024-10-11 14:26:38,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536664455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:38,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:38,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:38,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47602924] [2024-10-11 14:26:38,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:38,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:38,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:38,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:38,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:38,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:38,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 209 transitions, 3109 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:38,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:38,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:38,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:39,437 INFO L124 PetriNetUnfolderBase]: 1931/3531 cut-off events. [2024-10-11 14:26:39,438 INFO L125 PetriNetUnfolderBase]: For 22815/22815 co-relation queries the response was YES. [2024-10-11 14:26:39,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16819 conditions, 3531 events. 1931/3531 cut-off events. For 22815/22815 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 23318 event pairs, 175 based on Foata normal form. 1/3532 useless extension candidates. Maximal degree in co-relation 16701. Up to 722 conditions per place. [2024-10-11 14:26:39,463 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 210 selfloop transitions, 139 changer transitions 8/358 dead transitions. [2024-10-11 14:26:39,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 358 transitions, 4990 flow [2024-10-11 14:26:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 14:26:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 14:26:39,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 244 transitions. [2024-10-11 14:26:39,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3961038961038961 [2024-10-11 14:26:39,465 INFO L175 Difference]: Start difference. First operand has 193 places, 209 transitions, 3109 flow. Second operand 22 states and 244 transitions. [2024-10-11 14:26:39,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 358 transitions, 4990 flow [2024-10-11 14:26:39,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 358 transitions, 4700 flow, removed 8 selfloop flow, removed 19 redundant places. [2024-10-11 14:26:39,579 INFO L231 Difference]: Finished difference. Result has 206 places, 248 transitions, 3884 flow [2024-10-11 14:26:39,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3884, PETRI_PLACES=206, PETRI_TRANSITIONS=248} [2024-10-11 14:26:39,580 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 180 predicate places. [2024-10-11 14:26:39,580 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 248 transitions, 3884 flow [2024-10-11 14:26:39,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:39,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:39,580 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:39,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 14:26:39,581 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:39,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:39,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2015042110, now seen corresponding path program 14 times [2024-10-11 14:26:39,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:39,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212313142] [2024-10-11 14:26:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:39,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:40,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:40,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212313142] [2024-10-11 14:26:40,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212313142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:40,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:40,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:40,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496922481] [2024-10-11 14:26:40,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:40,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:40,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:40,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:40,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:40,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:40,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 248 transitions, 3884 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:40,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:40,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:40,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:41,067 INFO L124 PetriNetUnfolderBase]: 1948/3582 cut-off events. [2024-10-11 14:26:41,067 INFO L125 PetriNetUnfolderBase]: For 25434/25434 co-relation queries the response was YES. [2024-10-11 14:26:41,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17576 conditions, 3582 events. 1948/3582 cut-off events. For 25434/25434 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 23735 event pairs, 97 based on Foata normal form. 1/3583 useless extension candidates. Maximal degree in co-relation 17448. Up to 683 conditions per place. [2024-10-11 14:26:41,093 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 132 selfloop transitions, 210 changer transitions 7/350 dead transitions. [2024-10-11 14:26:41,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 350 transitions, 5260 flow [2024-10-11 14:26:41,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 14:26:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 14:26:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 205 transitions. [2024-10-11 14:26:41,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3486394557823129 [2024-10-11 14:26:41,098 INFO L175 Difference]: Start difference. First operand has 206 places, 248 transitions, 3884 flow. Second operand 21 states and 205 transitions. [2024-10-11 14:26:41,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 350 transitions, 5260 flow [2024-10-11 14:26:41,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 350 transitions, 5044 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-10-11 14:26:41,236 INFO L231 Difference]: Finished difference. Result has 223 places, 273 transitions, 4530 flow [2024-10-11 14:26:41,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4530, PETRI_PLACES=223, PETRI_TRANSITIONS=273} [2024-10-11 14:26:41,237 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 197 predicate places. [2024-10-11 14:26:41,237 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 273 transitions, 4530 flow [2024-10-11 14:26:41,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:41,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:41,237 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:41,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 14:26:41,238 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:41,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash -107817026, now seen corresponding path program 15 times [2024-10-11 14:26:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:41,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110575135] [2024-10-11 14:26:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:41,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:41,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:41,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:41,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110575135] [2024-10-11 14:26:41,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110575135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:41,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:41,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:41,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592251963] [2024-10-11 14:26:41,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:41,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:41,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:41,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:41,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:41,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:41,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 273 transitions, 4530 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:41,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:41,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:41,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:42,709 INFO L124 PetriNetUnfolderBase]: 1939/3560 cut-off events. [2024-10-11 14:26:42,709 INFO L125 PetriNetUnfolderBase]: For 27091/27091 co-relation queries the response was YES. [2024-10-11 14:26:42,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18143 conditions, 3560 events. 1939/3560 cut-off events. For 27091/27091 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 23657 event pairs, 237 based on Foata normal form. 1/3561 useless extension candidates. Maximal degree in co-relation 18012. Up to 722 conditions per place. [2024-10-11 14:26:42,730 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 209 selfloop transitions, 143 changer transitions 8/361 dead transitions. [2024-10-11 14:26:42,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 361 transitions, 5590 flow [2024-10-11 14:26:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 14:26:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 14:26:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 229 transitions. [2024-10-11 14:26:42,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38945578231292516 [2024-10-11 14:26:42,732 INFO L175 Difference]: Start difference. First operand has 223 places, 273 transitions, 4530 flow. Second operand 21 states and 229 transitions. [2024-10-11 14:26:42,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 361 transitions, 5590 flow [2024-10-11 14:26:42,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 361 transitions, 5267 flow, removed 91 selfloop flow, removed 10 redundant places. [2024-10-11 14:26:42,866 INFO L231 Difference]: Finished difference. Result has 234 places, 273 transitions, 4536 flow [2024-10-11 14:26:42,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4239, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4536, PETRI_PLACES=234, PETRI_TRANSITIONS=273} [2024-10-11 14:26:42,867 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 208 predicate places. [2024-10-11 14:26:42,867 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 273 transitions, 4536 flow [2024-10-11 14:26:42,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:42,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:42,867 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:42,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 14:26:42,868 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:42,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:42,868 INFO L85 PathProgramCache]: Analyzing trace with hash -643046828, now seen corresponding path program 16 times [2024-10-11 14:26:42,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:42,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363258885] [2024-10-11 14:26:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:42,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:43,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:43,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363258885] [2024-10-11 14:26:43,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363258885] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:43,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:43,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:43,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181125299] [2024-10-11 14:26:43,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:43,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:43,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:43,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:43,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:43,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:43,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 273 transitions, 4536 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:43,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:43,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:43,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:44,483 INFO L124 PetriNetUnfolderBase]: 2071/3811 cut-off events. [2024-10-11 14:26:44,483 INFO L125 PetriNetUnfolderBase]: For 29562/29562 co-relation queries the response was YES. [2024-10-11 14:26:44,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19543 conditions, 3811 events. 2071/3811 cut-off events. For 29562/29562 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 25665 event pairs, 140 based on Foata normal form. 1/3812 useless extension candidates. Maximal degree in co-relation 19415. Up to 657 conditions per place. [2024-10-11 14:26:44,508 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 168 selfloop transitions, 230 changer transitions 7/406 dead transitions. [2024-10-11 14:26:44,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 406 transitions, 6236 flow [2024-10-11 14:26:44,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 14:26:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-11 14:26:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 283 transitions. [2024-10-11 14:26:44,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4042857142857143 [2024-10-11 14:26:44,510 INFO L175 Difference]: Start difference. First operand has 234 places, 273 transitions, 4536 flow. Second operand 25 states and 283 transitions. [2024-10-11 14:26:44,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 406 transitions, 6236 flow [2024-10-11 14:26:44,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 406 transitions, 5901 flow, removed 18 selfloop flow, removed 18 redundant places. [2024-10-11 14:26:44,626 INFO L231 Difference]: Finished difference. Result has 249 places, 302 transitions, 5325 flow [2024-10-11 14:26:44,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4261, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=5325, PETRI_PLACES=249, PETRI_TRANSITIONS=302} [2024-10-11 14:26:44,627 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 223 predicate places. [2024-10-11 14:26:44,627 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 302 transitions, 5325 flow [2024-10-11 14:26:44,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:44,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:44,627 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:44,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-11 14:26:44,627 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:44,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:44,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1509102896, now seen corresponding path program 17 times [2024-10-11 14:26:44,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:44,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166746733] [2024-10-11 14:26:44,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:44,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:45,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:45,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166746733] [2024-10-11 14:26:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166746733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:45,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:45,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:45,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505264160] [2024-10-11 14:26:45,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:45,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:45,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:45,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:45,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 302 transitions, 5325 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:45,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:45,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:45,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:46,097 INFO L124 PetriNetUnfolderBase]: 2191/4032 cut-off events. [2024-10-11 14:26:46,097 INFO L125 PetriNetUnfolderBase]: For 33249/33249 co-relation queries the response was YES. [2024-10-11 14:26:46,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21490 conditions, 4032 events. 2191/4032 cut-off events. For 33249/33249 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 27552 event pairs, 266 based on Foata normal form. 1/4033 useless extension candidates. Maximal degree in co-relation 21354. Up to 1058 conditions per place. [2024-10-11 14:26:46,121 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 206 selfloop transitions, 200 changer transitions 8/415 dead transitions. [2024-10-11 14:26:46,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 415 transitions, 6795 flow [2024-10-11 14:26:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 14:26:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 14:26:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 260 transitions. [2024-10-11 14:26:46,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40372670807453415 [2024-10-11 14:26:46,123 INFO L175 Difference]: Start difference. First operand has 249 places, 302 transitions, 5325 flow. Second operand 23 states and 260 transitions. [2024-10-11 14:26:46,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 415 transitions, 6795 flow [2024-10-11 14:26:46,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 415 transitions, 6661 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-10-11 14:26:46,247 INFO L231 Difference]: Finished difference. Result has 270 places, 317 transitions, 5961 flow [2024-10-11 14:26:46,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5218, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5961, PETRI_PLACES=270, PETRI_TRANSITIONS=317} [2024-10-11 14:26:46,248 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 244 predicate places. [2024-10-11 14:26:46,248 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 317 transitions, 5961 flow [2024-10-11 14:26:46,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:46,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:46,248 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:46,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 14:26:46,248 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:46,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:46,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1845366064, now seen corresponding path program 18 times [2024-10-11 14:26:46,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:46,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759768881] [2024-10-11 14:26:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:46,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:46,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759768881] [2024-10-11 14:26:46,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759768881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:46,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:46,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:46,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144011760] [2024-10-11 14:26:46,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:46,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:46,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:46,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:46,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:46,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:46,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 317 transitions, 5961 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:46,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:46,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:46,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:47,804 INFO L124 PetriNetUnfolderBase]: 2239/4106 cut-off events. [2024-10-11 14:26:47,804 INFO L125 PetriNetUnfolderBase]: For 36839/36839 co-relation queries the response was YES. [2024-10-11 14:26:47,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22613 conditions, 4106 events. 2239/4106 cut-off events. For 36839/36839 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 28041 event pairs, 282 based on Foata normal form. 5/4111 useless extension candidates. Maximal degree in co-relation 22473. Up to 1044 conditions per place. [2024-10-11 14:26:47,828 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 251 selfloop transitions, 172 changer transitions 9/433 dead transitions. [2024-10-11 14:26:47,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 433 transitions, 7590 flow [2024-10-11 14:26:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 14:26:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 14:26:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 244 transitions. [2024-10-11 14:26:47,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3961038961038961 [2024-10-11 14:26:47,829 INFO L175 Difference]: Start difference. First operand has 270 places, 317 transitions, 5961 flow. Second operand 22 states and 244 transitions. [2024-10-11 14:26:47,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 433 transitions, 7590 flow [2024-10-11 14:26:47,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 433 transitions, 7181 flow, removed 14 selfloop flow, removed 14 redundant places. [2024-10-11 14:26:47,959 INFO L231 Difference]: Finished difference. Result has 282 places, 330 transitions, 6303 flow [2024-10-11 14:26:47,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5616, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6303, PETRI_PLACES=282, PETRI_TRANSITIONS=330} [2024-10-11 14:26:47,960 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 256 predicate places. [2024-10-11 14:26:47,960 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 330 transitions, 6303 flow [2024-10-11 14:26:47,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:47,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:47,960 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:47,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 14:26:47,960 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:47,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:47,961 INFO L85 PathProgramCache]: Analyzing trace with hash -21205396, now seen corresponding path program 19 times [2024-10-11 14:26:47,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:47,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556008531] [2024-10-11 14:26:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:47,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:48,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:48,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556008531] [2024-10-11 14:26:48,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556008531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:48,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:48,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:48,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197935444] [2024-10-11 14:26:48,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:48,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:48,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:48,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:48,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:48,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:48,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 330 transitions, 6303 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:48,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:48,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:48,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:50,023 INFO L124 PetriNetUnfolderBase]: 2234/4101 cut-off events. [2024-10-11 14:26:50,024 INFO L125 PetriNetUnfolderBase]: For 38366/38366 co-relation queries the response was YES. [2024-10-11 14:26:50,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22957 conditions, 4101 events. 2234/4101 cut-off events. For 38366/38366 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 27916 event pairs, 135 based on Foata normal form. 1/4102 useless extension candidates. Maximal degree in co-relation 22812. Up to 737 conditions per place. [2024-10-11 14:26:50,058 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 171 selfloop transitions, 261 changer transitions 7/440 dead transitions. [2024-10-11 14:26:50,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 440 transitions, 7591 flow [2024-10-11 14:26:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 14:26:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-11 14:26:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 275 transitions. [2024-10-11 14:26:50,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3637566137566138 [2024-10-11 14:26:50,059 INFO L175 Difference]: Start difference. First operand has 282 places, 330 transitions, 6303 flow. Second operand 27 states and 275 transitions. [2024-10-11 14:26:50,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 440 transitions, 7591 flow [2024-10-11 14:26:50,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 440 transitions, 7229 flow, removed 29 selfloop flow, removed 17 redundant places. [2024-10-11 14:26:50,209 INFO L231 Difference]: Finished difference. Result has 293 places, 333 transitions, 6531 flow [2024-10-11 14:26:50,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5959, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6531, PETRI_PLACES=293, PETRI_TRANSITIONS=333} [2024-10-11 14:26:50,210 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 267 predicate places. [2024-10-11 14:26:50,210 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 333 transitions, 6531 flow [2024-10-11 14:26:50,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:50,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:50,210 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:50,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-11 14:26:50,210 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:50,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1064565566, now seen corresponding path program 20 times [2024-10-11 14:26:50,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:50,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71873931] [2024-10-11 14:26:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:50,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:50,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:50,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71873931] [2024-10-11 14:26:50,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71873931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:50,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:50,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:50,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177231740] [2024-10-11 14:26:50,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:50,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:50,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:50,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:50,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:50,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:50,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 333 transitions, 6531 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:50,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:50,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:50,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:51,675 INFO L124 PetriNetUnfolderBase]: 2250/4138 cut-off events. [2024-10-11 14:26:51,675 INFO L125 PetriNetUnfolderBase]: For 39915/39915 co-relation queries the response was YES. [2024-10-11 14:26:51,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23443 conditions, 4138 events. 2250/4138 cut-off events. For 39915/39915 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 28267 event pairs, 282 based on Foata normal form. 1/4139 useless extension candidates. Maximal degree in co-relation 23299. Up to 1014 conditions per place. [2024-10-11 14:26:51,707 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 214 selfloop transitions, 188 changer transitions 7/410 dead transitions. [2024-10-11 14:26:51,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 410 transitions, 7664 flow [2024-10-11 14:26:51,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 14:26:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 14:26:51,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 203 transitions. [2024-10-11 14:26:51,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3815789473684211 [2024-10-11 14:26:51,709 INFO L175 Difference]: Start difference. First operand has 293 places, 333 transitions, 6531 flow. Second operand 19 states and 203 transitions. [2024-10-11 14:26:51,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 410 transitions, 7664 flow [2024-10-11 14:26:51,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 410 transitions, 7002 flow, removed 37 selfloop flow, removed 28 redundant places. [2024-10-11 14:26:51,860 INFO L231 Difference]: Finished difference. Result has 285 places, 335 transitions, 6319 flow [2024-10-11 14:26:51,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5887, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6319, PETRI_PLACES=285, PETRI_TRANSITIONS=335} [2024-10-11 14:26:51,861 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 259 predicate places. [2024-10-11 14:26:51,861 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 335 transitions, 6319 flow [2024-10-11 14:26:51,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:51,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:51,861 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:51,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-11 14:26:51,861 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:51,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:51,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1038790082, now seen corresponding path program 21 times [2024-10-11 14:26:51,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:51,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046017341] [2024-10-11 14:26:51,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:51,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:52,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:52,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046017341] [2024-10-11 14:26:52,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046017341] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:52,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:52,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:52,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521871261] [2024-10-11 14:26:52,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:52,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:52,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:52,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:52,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:52,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:52,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 335 transitions, 6319 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:52,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:52,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:52,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:53,924 INFO L124 PetriNetUnfolderBase]: 2241/4116 cut-off events. [2024-10-11 14:26:53,925 INFO L125 PetriNetUnfolderBase]: For 36387/36387 co-relation queries the response was YES. [2024-10-11 14:26:53,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22531 conditions, 4116 events. 2241/4116 cut-off events. For 36387/36387 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 27973 event pairs, 61 based on Foata normal form. 1/4117 useless extension candidates. Maximal degree in co-relation 22395. Up to 713 conditions per place. [2024-10-11 14:26:53,954 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 158 selfloop transitions, 279 changer transitions 7/445 dead transitions. [2024-10-11 14:26:53,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 445 transitions, 7560 flow [2024-10-11 14:26:53,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-11 14:26:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-11 14:26:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 302 transitions. [2024-10-11 14:26:53,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.347926267281106 [2024-10-11 14:26:53,956 INFO L175 Difference]: Start difference. First operand has 285 places, 335 transitions, 6319 flow. Second operand 31 states and 302 transitions. [2024-10-11 14:26:53,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 445 transitions, 7560 flow [2024-10-11 14:26:54,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 445 transitions, 7174 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-10-11 14:26:54,100 INFO L231 Difference]: Finished difference. Result has 300 places, 334 transitions, 6492 flow [2024-10-11 14:26:54,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5945, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=6492, PETRI_PLACES=300, PETRI_TRANSITIONS=334} [2024-10-11 14:26:54,101 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 274 predicate places. [2024-10-11 14:26:54,101 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 334 transitions, 6492 flow [2024-10-11 14:26:54,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:54,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:54,101 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:54,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-11 14:26:54,101 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:54,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:54,102 INFO L85 PathProgramCache]: Analyzing trace with hash -617271344, now seen corresponding path program 22 times [2024-10-11 14:26:54,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:54,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815452364] [2024-10-11 14:26:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:54,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:54,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:54,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815452364] [2024-10-11 14:26:54,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815452364] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:54,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:54,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:26:54,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965687404] [2024-10-11 14:26:54,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:54,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:26:54,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:54,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:26:54,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:26:54,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:54,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 334 transitions, 6492 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:54,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:54,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:54,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:55,611 INFO L124 PetriNetUnfolderBase]: 2232/4094 cut-off events. [2024-10-11 14:26:55,611 INFO L125 PetriNetUnfolderBase]: For 39558/39558 co-relation queries the response was YES. [2024-10-11 14:26:55,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22870 conditions, 4094 events. 2232/4094 cut-off events. For 39558/39558 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 27930 event pairs, 304 based on Foata normal form. 1/4095 useless extension candidates. Maximal degree in co-relation 22735. Up to 1024 conditions per place. [2024-10-11 14:26:55,641 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 185 selfloop transitions, 210 changer transitions 7/403 dead transitions. [2024-10-11 14:26:55,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 403 transitions, 7522 flow [2024-10-11 14:26:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 14:26:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 14:26:55,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 211 transitions. [2024-10-11 14:26:55,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3767857142857143 [2024-10-11 14:26:55,643 INFO L175 Difference]: Start difference. First operand has 300 places, 334 transitions, 6492 flow. Second operand 20 states and 211 transitions. [2024-10-11 14:26:55,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 403 transitions, 7522 flow [2024-10-11 14:26:55,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 403 transitions, 6789 flow, removed 5 selfloop flow, removed 34 redundant places. [2024-10-11 14:26:55,854 INFO L231 Difference]: Finished difference. Result has 285 places, 333 transitions, 6178 flow [2024-10-11 14:26:55,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5767, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6178, PETRI_PLACES=285, PETRI_TRANSITIONS=333} [2024-10-11 14:26:55,855 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 259 predicate places. [2024-10-11 14:26:55,855 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 333 transitions, 6178 flow [2024-10-11 14:26:55,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:55,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:55,856 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:55,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-11 14:26:55,856 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:55,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:55,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1684581256, now seen corresponding path program 1 times [2024-10-11 14:26:55,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:55,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726180082] [2024-10-11 14:26:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:55,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:55,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726180082] [2024-10-11 14:26:55,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726180082] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:26:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214531150] [2024-10-11 14:26:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:55,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:55,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:26:55,910 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:26:55,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 14:26:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:56,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 14:26:56,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:26:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:56,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:26:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:56,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214531150] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:26:56,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:26:56,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 14:26:56,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663467830] [2024-10-11 14:26:56,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:26:56,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 14:26:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 14:26:56,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-10-11 14:26:56,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:56,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 333 transitions, 6178 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:56,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:56,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:56,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:56,919 INFO L124 PetriNetUnfolderBase]: 2492/4486 cut-off events. [2024-10-11 14:26:56,919 INFO L125 PetriNetUnfolderBase]: For 42222/42222 co-relation queries the response was YES. [2024-10-11 14:26:56,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25848 conditions, 4486 events. 2492/4486 cut-off events. For 42222/42222 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 29075 event pairs, 719 based on Foata normal form. 338/4824 useless extension candidates. Maximal degree in co-relation 25715. Up to 1336 conditions per place. [2024-10-11 14:26:56,953 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 465 selfloop transitions, 95 changer transitions 0/561 dead transitions. [2024-10-11 14:26:56,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 561 transitions, 10607 flow [2024-10-11 14:26:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:26:56,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:26:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-10-11 14:26:56,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-10-11 14:26:56,954 INFO L175 Difference]: Start difference. First operand has 285 places, 333 transitions, 6178 flow. Second operand 7 states and 120 transitions. [2024-10-11 14:26:56,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 561 transitions, 10607 flow [2024-10-11 14:26:57,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 561 transitions, 9949 flow, removed 10 selfloop flow, removed 20 redundant places. [2024-10-11 14:26:57,108 INFO L231 Difference]: Finished difference. Result has 274 places, 364 transitions, 6523 flow [2024-10-11 14:26:57,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5768, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6523, PETRI_PLACES=274, PETRI_TRANSITIONS=364} [2024-10-11 14:26:57,109 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 248 predicate places. [2024-10-11 14:26:57,109 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 364 transitions, 6523 flow [2024-10-11 14:26:57,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:57,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:57,110 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:57,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 14:26:57,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:57,310 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:57,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:57,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1587222423, now seen corresponding path program 1 times [2024-10-11 14:26:57,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:57,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634342647] [2024-10-11 14:26:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:57,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:57,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:57,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634342647] [2024-10-11 14:26:57,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634342647] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:26:57,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193705099] [2024-10-11 14:26:57,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:57,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:57,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:26:57,377 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:26:57,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 14:26:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:57,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 14:26:57,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:26:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:57,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:26:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:57,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193705099] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:26:57,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:26:57,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-11 14:26:57,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018931974] [2024-10-11 14:26:57,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:26:57,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:26:57,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:57,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:26:57,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:26:57,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:57,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 364 transitions, 6523 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:57,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:57,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:57,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:58,479 INFO L124 PetriNetUnfolderBase]: 3372/5995 cut-off events. [2024-10-11 14:26:58,480 INFO L125 PetriNetUnfolderBase]: For 45866/45866 co-relation queries the response was YES. [2024-10-11 14:26:58,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34846 conditions, 5995 events. 3372/5995 cut-off events. For 45866/45866 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 38463 event pairs, 490 based on Foata normal form. 521/6516 useless extension candidates. Maximal degree in co-relation 34714. Up to 1568 conditions per place. [2024-10-11 14:26:58,530 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 544 selfloop transitions, 83 changer transitions 1/629 dead transitions. [2024-10-11 14:26:58,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 629 transitions, 11775 flow [2024-10-11 14:26:58,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:26:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:26:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-10-11 14:26:58,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5044642857142857 [2024-10-11 14:26:58,533 INFO L175 Difference]: Start difference. First operand has 274 places, 364 transitions, 6523 flow. Second operand 8 states and 113 transitions. [2024-10-11 14:26:58,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 629 transitions, 11775 flow [2024-10-11 14:26:58,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 629 transitions, 11555 flow, removed 52 selfloop flow, removed 2 redundant places. [2024-10-11 14:26:58,792 INFO L231 Difference]: Finished difference. Result has 283 places, 392 transitions, 7059 flow [2024-10-11 14:26:58,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7059, PETRI_PLACES=283, PETRI_TRANSITIONS=392} [2024-10-11 14:26:58,793 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 257 predicate places. [2024-10-11 14:26:58,793 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 392 transitions, 7059 flow [2024-10-11 14:26:58,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:58,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:58,794 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:58,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 14:26:58,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:58,994 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:26:58,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash 726834522, now seen corresponding path program 1 times [2024-10-11 14:26:58,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:58,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571566772] [2024-10-11 14:26:58,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:58,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:59,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:59,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571566772] [2024-10-11 14:26:59,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571566772] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:26:59,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356060490] [2024-10-11 14:26:59,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:59,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:59,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:26:59,375 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:26:59,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 14:26:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:59,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 14:26:59,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:26:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:59,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:26:59,772 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-11 14:26:59,772 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 [2024-10-11 14:26:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:26:59,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356060490] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:26:59,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:26:59,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-10-11 14:26:59,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508012642] [2024-10-11 14:26:59,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:26:59,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:26:59,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:59,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:26:59,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:26:59,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:26:59,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 392 transitions, 7059 flow. Second operand has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 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) [2024-10-11 14:26:59,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:59,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:26:59,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:01,216 INFO L124 PetriNetUnfolderBase]: 3451/6126 cut-off events. [2024-10-11 14:27:01,216 INFO L125 PetriNetUnfolderBase]: For 57819/57819 co-relation queries the response was YES. [2024-10-11 14:27:01,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37536 conditions, 6126 events. 3451/6126 cut-off events. For 57819/57819 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 39485 event pairs, 350 based on Foata normal form. 56/6182 useless extension candidates. Maximal degree in co-relation 37399. Up to 1443 conditions per place. [2024-10-11 14:27:01,268 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 175 selfloop transitions, 313 changer transitions 1/490 dead transitions. [2024-10-11 14:27:01,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 490 transitions, 8928 flow [2024-10-11 14:27:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 14:27:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 14:27:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 186 transitions. [2024-10-11 14:27:01,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-10-11 14:27:01,269 INFO L175 Difference]: Start difference. First operand has 283 places, 392 transitions, 7059 flow. Second operand 18 states and 186 transitions. [2024-10-11 14:27:01,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 490 transitions, 8928 flow [2024-10-11 14:27:01,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 490 transitions, 8758 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-10-11 14:27:01,564 INFO L231 Difference]: Finished difference. Result has 298 places, 423 transitions, 8167 flow [2024-10-11 14:27:01,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6865, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8167, PETRI_PLACES=298, PETRI_TRANSITIONS=423} [2024-10-11 14:27:01,564 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 272 predicate places. [2024-10-11 14:27:01,564 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 423 transitions, 8167 flow [2024-10-11 14:27:01,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 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) [2024-10-11 14:27:01,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:01,565 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:01,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 14:27:01,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-11 14:27:01,765 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:27:01,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:01,766 INFO L85 PathProgramCache]: Analyzing trace with hash 866801083, now seen corresponding path program 1 times [2024-10-11 14:27:01,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:01,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033946089] [2024-10-11 14:27:01,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:01,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:02,211 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:02,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:02,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033946089] [2024-10-11 14:27:02,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033946089] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:27:02,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100392515] [2024-10-11 14:27:02,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:02,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:02,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:27:02,214 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:27:02,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 14:27:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:02,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 14:27:02,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:27:02,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:27:02,475 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 118 treesize of output 74 [2024-10-11 14:27:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:02,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:27:02,636 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-11 14:27:02,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 87 [2024-10-11 14:27:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:02,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100392515] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:27:02,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:27:02,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 18 [2024-10-11 14:27:02,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096255969] [2024-10-11 14:27:02,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:02,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:27:02,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:02,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:27:02,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:27:02,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:27:02,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 423 transitions, 8167 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:02,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:02,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:27:02,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:03,969 INFO L124 PetriNetUnfolderBase]: 3865/7026 cut-off events. [2024-10-11 14:27:03,969 INFO L125 PetriNetUnfolderBase]: For 65882/65882 co-relation queries the response was YES. [2024-10-11 14:27:03,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43530 conditions, 7026 events. 3865/7026 cut-off events. For 65882/65882 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 47993 event pairs, 802 based on Foata normal form. 30/7056 useless extension candidates. Maximal degree in co-relation 43389. Up to 2309 conditions per place. [2024-10-11 14:27:04,018 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 296 selfloop transitions, 199 changer transitions 0/496 dead transitions. [2024-10-11 14:27:04,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 496 transitions, 9786 flow [2024-10-11 14:27:04,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:27:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:27:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-10-11 14:27:04,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-10-11 14:27:04,019 INFO L175 Difference]: Start difference. First operand has 298 places, 423 transitions, 8167 flow. Second operand 11 states and 136 transitions. [2024-10-11 14:27:04,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 496 transitions, 9786 flow [2024-10-11 14:27:04,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 496 transitions, 9683 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-10-11 14:27:04,363 INFO L231 Difference]: Finished difference. Result has 306 places, 435 transitions, 8749 flow [2024-10-11 14:27:04,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8025, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8749, PETRI_PLACES=306, PETRI_TRANSITIONS=435} [2024-10-11 14:27:04,363 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 280 predicate places. [2024-10-11 14:27:04,363 INFO L471 AbstractCegarLoop]: Abstraction has has 306 places, 435 transitions, 8749 flow [2024-10-11 14:27:04,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:04,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:04,364 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:04,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 14:27:04,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:04,565 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:27:04,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:04,565 INFO L85 PathProgramCache]: Analyzing trace with hash 152562718, now seen corresponding path program 2 times [2024-10-11 14:27:04,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:04,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134210227] [2024-10-11 14:27:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:04,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:04,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:04,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134210227] [2024-10-11 14:27:04,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134210227] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:27:04,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465832903] [2024-10-11 14:27:04,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:27:04,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:04,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:27:04,969 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:27:04,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 14:27:05,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:27:05,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:27:05,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 14:27:05,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:27:05,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:27:05,272 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 118 treesize of output 70 [2024-10-11 14:27:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:05,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:27:05,447 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-11 14:27:05,448 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 [2024-10-11 14:27:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:05,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465832903] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:27:05,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:27:05,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 18 [2024-10-11 14:27:05,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85842824] [2024-10-11 14:27:05,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:27:05,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 14:27:05,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:05,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 14:27:05,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:27:05,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:27:05,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 435 transitions, 8749 flow. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:05,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:05,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:27:05,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:07,810 INFO L124 PetriNetUnfolderBase]: 5292/9528 cut-off events. [2024-10-11 14:27:07,811 INFO L125 PetriNetUnfolderBase]: For 91467/91467 co-relation queries the response was YES. [2024-10-11 14:27:07,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61490 conditions, 9528 events. 5292/9528 cut-off events. For 91467/91467 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 68298 event pairs, 875 based on Foata normal form. 34/9562 useless extension candidates. Maximal degree in co-relation 61350. Up to 2303 conditions per place. [2024-10-11 14:27:07,898 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 268 selfloop transitions, 366 changer transitions 6/641 dead transitions. [2024-10-11 14:27:07,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 641 transitions, 12067 flow [2024-10-11 14:27:07,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-11 14:27:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-11 14:27:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 325 transitions. [2024-10-11 14:27:07,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3627232142857143 [2024-10-11 14:27:07,900 INFO L175 Difference]: Start difference. First operand has 306 places, 435 transitions, 8749 flow. Second operand 32 states and 325 transitions. [2024-10-11 14:27:07,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 641 transitions, 12067 flow [2024-10-11 14:27:08,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 641 transitions, 11744 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-11 14:27:08,637 INFO L231 Difference]: Finished difference. Result has 342 places, 511 transitions, 10933 flow [2024-10-11 14:27:08,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8443, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=10933, PETRI_PLACES=342, PETRI_TRANSITIONS=511} [2024-10-11 14:27:08,637 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 316 predicate places. [2024-10-11 14:27:08,637 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 511 transitions, 10933 flow [2024-10-11 14:27:08,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:08,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:08,638 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:08,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 14:27:08,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-11 14:27:08,839 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:27:08,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:08,839 INFO L85 PathProgramCache]: Analyzing trace with hash 763083020, now seen corresponding path program 3 times [2024-10-11 14:27:08,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:08,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224133728] [2024-10-11 14:27:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:08,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:09,377 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:09,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:09,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224133728] [2024-10-11 14:27:09,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224133728] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:27:09,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941741741] [2024-10-11 14:27:09,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:27:09,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:09,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:27:09,378 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:27:09,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 14:27:09,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:27:09,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:27:09,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 14:27:09,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:27:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:09,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:27:09,747 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-11 14:27:09,747 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 [2024-10-11 14:27:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:09,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941741741] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:27:09,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:27:09,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2024-10-11 14:27:09,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74166024] [2024-10-11 14:27:09,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:27:09,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:27:09,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:09,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:27:09,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:27:09,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:27:09,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 511 transitions, 10933 flow. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:09,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:09,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:27:09,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:13,520 INFO L124 PetriNetUnfolderBase]: 7057/12484 cut-off events. [2024-10-11 14:27:13,520 INFO L125 PetriNetUnfolderBase]: For 141338/141338 co-relation queries the response was YES. [2024-10-11 14:27:13,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87076 conditions, 12484 events. 7057/12484 cut-off events. For 141338/141338 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 91661 event pairs, 1299 based on Foata normal form. 45/12529 useless extension candidates. Maximal degree in co-relation 86925. Up to 3308 conditions per place. [2024-10-11 14:27:13,645 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 296 selfloop transitions, 430 changer transitions 3/730 dead transitions. [2024-10-11 14:27:13,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 730 transitions, 15229 flow [2024-10-11 14:27:13,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 14:27:13,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 14:27:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 267 transitions. [2024-10-11 14:27:13,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-10-11 14:27:13,647 INFO L175 Difference]: Start difference. First operand has 342 places, 511 transitions, 10933 flow. Second operand 24 states and 267 transitions. [2024-10-11 14:27:13,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 730 transitions, 15229 flow [2024-10-11 14:27:14,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 730 transitions, 14746 flow, removed 39 selfloop flow, removed 17 redundant places. [2024-10-11 14:27:14,591 INFO L231 Difference]: Finished difference. Result has 355 places, 622 transitions, 14278 flow [2024-10-11 14:27:14,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=10432, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=14278, PETRI_PLACES=355, PETRI_TRANSITIONS=622} [2024-10-11 14:27:14,592 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 329 predicate places. [2024-10-11 14:27:14,592 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 622 transitions, 14278 flow [2024-10-11 14:27:14,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:14,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:14,593 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:14,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 14:27:14,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-11 14:27:14,793 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:27:14,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:14,794 INFO L85 PathProgramCache]: Analyzing trace with hash -154774815, now seen corresponding path program 2 times [2024-10-11 14:27:14,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:14,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266541433] [2024-10-11 14:27:14,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:14,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:15,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:15,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266541433] [2024-10-11 14:27:15,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266541433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:15,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:15,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 14:27:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118236257] [2024-10-11 14:27:15,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:15,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 14:27:15,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 14:27:15,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-11 14:27:15,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:27:15,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 622 transitions, 14278 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:15,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:15,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:27:15,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:18,623 INFO L124 PetriNetUnfolderBase]: 6977/12317 cut-off events. [2024-10-11 14:27:18,623 INFO L125 PetriNetUnfolderBase]: For 160925/160925 co-relation queries the response was YES. [2024-10-11 14:27:18,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91588 conditions, 12317 events. 6977/12317 cut-off events. For 160925/160925 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 89833 event pairs, 1873 based on Foata normal form. 5/12322 useless extension candidates. Maximal degree in co-relation 91432. Up to 5364 conditions per place. [2024-10-11 14:27:18,737 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 358 selfloop transitions, 291 changer transitions 4/654 dead transitions. [2024-10-11 14:27:18,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 654 transitions, 15672 flow [2024-10-11 14:27:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:27:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:27:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-10-11 14:27:18,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3630952380952381 [2024-10-11 14:27:18,739 INFO L175 Difference]: Start difference. First operand has 355 places, 622 transitions, 14278 flow. Second operand 12 states and 122 transitions. [2024-10-11 14:27:18,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 654 transitions, 15672 flow [2024-10-11 14:27:19,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 654 transitions, 15281 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-10-11 14:27:20,004 INFO L231 Difference]: Finished difference. Result has 354 places, 618 transitions, 14391 flow [2024-10-11 14:27:20,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=13832, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14391, PETRI_PLACES=354, PETRI_TRANSITIONS=618} [2024-10-11 14:27:20,005 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 328 predicate places. [2024-10-11 14:27:20,006 INFO L471 AbstractCegarLoop]: Abstraction has has 354 places, 618 transitions, 14391 flow [2024-10-11 14:27:20,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:20,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:20,006 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:20,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-11 14:27:20,006 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:27:20,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:20,007 INFO L85 PathProgramCache]: Analyzing trace with hash 298493033, now seen corresponding path program 3 times [2024-10-11 14:27:20,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:20,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386646171] [2024-10-11 14:27:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:20,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:20,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386646171] [2024-10-11 14:27:20,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386646171] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:27:20,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722212872] [2024-10-11 14:27:20,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:27:20,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:20,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:27:20,462 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:27:20,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 14:27:20,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:27:20,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:27:20,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 14:27:20,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:27:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:20,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:27:20,809 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-10-11 14:27:20,809 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 [2024-10-11 14:27:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:20,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722212872] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:27:20,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:27:20,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 16 [2024-10-11 14:27:20,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277744256] [2024-10-11 14:27:20,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:27:20,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:27:20,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:20,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:27:20,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:27:20,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:27:20,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 618 transitions, 14391 flow. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:20,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:20,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:27:20,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:24,392 INFO L124 PetriNetUnfolderBase]: 7198/12803 cut-off events. [2024-10-11 14:27:24,392 INFO L125 PetriNetUnfolderBase]: For 177124/177124 co-relation queries the response was YES. [2024-10-11 14:27:24,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94423 conditions, 12803 events. 7198/12803 cut-off events. For 177124/177124 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 95587 event pairs, 1240 based on Foata normal form. 52/12855 useless extension candidates. Maximal degree in co-relation 94268. Up to 4196 conditions per place. [2024-10-11 14:27:24,545 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 376 selfloop transitions, 349 changer transitions 0/726 dead transitions. [2024-10-11 14:27:24,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 726 transitions, 17010 flow [2024-10-11 14:27:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:27:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:27:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 178 transitions. [2024-10-11 14:27:24,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-10-11 14:27:24,546 INFO L175 Difference]: Start difference. First operand has 354 places, 618 transitions, 14391 flow. Second operand 16 states and 178 transitions. [2024-10-11 14:27:24,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 726 transitions, 17010 flow [2024-10-11 14:27:26,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 726 transitions, 16346 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-10-11 14:27:26,061 INFO L231 Difference]: Finished difference. Result has 359 places, 657 transitions, 15426 flow [2024-10-11 14:27:26,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=13727, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=15426, PETRI_PLACES=359, PETRI_TRANSITIONS=657} [2024-10-11 14:27:26,062 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 333 predicate places. [2024-10-11 14:27:26,062 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 657 transitions, 15426 flow [2024-10-11 14:27:26,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:26,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:26,063 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:26,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 14:27:26,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-11 14:27:26,264 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:27:26,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1486478912, now seen corresponding path program 4 times [2024-10-11 14:27:26,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:26,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875545776] [2024-10-11 14:27:26,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:26,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:26,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:26,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875545776] [2024-10-11 14:27:26,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875545776] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:27:26,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892057627] [2024-10-11 14:27:26,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:27:26,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:26,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:27:26,596 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:27:26,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 14:27:26,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:27:26,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:27:26,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 14:27:26,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:27:26,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:27:26,820 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 118 treesize of output 74 [2024-10-11 14:27:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:26,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:27:27,000 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-10-11 14:27:27,001 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 111 treesize of output 95 [2024-10-11 14:27:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 14:27:27,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892057627] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:27:27,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:27:27,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 18 [2024-10-11 14:27:27,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594660738] [2024-10-11 14:27:27,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:27,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:27:27,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:27,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:27:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:27:27,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-11 14:27:27,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 657 transitions, 15426 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:27,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:27,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-11 14:27:27,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:30,611 INFO L124 PetriNetUnfolderBase]: 7643/13760 cut-off events. [2024-10-11 14:27:30,612 INFO L125 PetriNetUnfolderBase]: For 183961/183961 co-relation queries the response was YES. [2024-10-11 14:27:30,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100551 conditions, 13760 events. 7643/13760 cut-off events. For 183961/183961 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 105182 event pairs, 2168 based on Foata normal form. 34/13794 useless extension candidates. Maximal degree in co-relation 100391. Up to 6250 conditions per place. [2024-10-11 14:27:30,985 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 399 selfloop transitions, 334 changer transitions 1/735 dead transitions. [2024-10-11 14:27:30,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 735 transitions, 17699 flow [2024-10-11 14:27:30,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:27:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:27:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-10-11 14:27:30,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2024-10-11 14:27:30,987 INFO L175 Difference]: Start difference. First operand has 359 places, 657 transitions, 15426 flow. Second operand 11 states and 145 transitions. [2024-10-11 14:27:30,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 735 transitions, 17699 flow