./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-nzb-file-subst.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-nzb-file-subst.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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:27:24,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:27:24,732 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:27:24,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:27:24,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:27:24,767 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:27:24,768 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:27:24,769 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:27:24,770 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:27:24,771 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:27:24,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:27:24,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:27:24,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:27:24,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:27:24,775 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:27:24,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:27:24,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:27:24,776 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:27:24,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:27:24,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:27:24,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:27:24,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:27:24,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:27:24,782 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:27:24,782 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:27:24,782 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:27:24,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:27:24,783 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:27:24,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:27:24,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:27:24,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:27:24,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:27:24,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:27:24,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:27:24,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:27:24,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:27:24,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:27:24,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:27:24,787 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:27:24,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:27:24,788 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:27:24,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:27:24,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2024-10-11 14:27:25,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:27:25,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:27:25,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:27:25,071 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:27:25,072 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:27:25,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-10-11 14:27:26,565 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:27:26,774 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:27:26,777 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-10-11 14:27:26,789 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7f295ecd0/2cc7940e926d40f3815dc19a11f9e209/FLAG0ac10da89 [2024-10-11 14:27:27,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7f295ecd0/2cc7940e926d40f3815dc19a11f9e209 [2024-10-11 14:27:27,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:27:27,146 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:27:27,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:27:27,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:27:27,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:27:27,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f80224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27, skipping insertion in model container [2024-10-11 14:27:27,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,191 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:27:27,483 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-nzb-file-subst.wvr.c[6540,6553] [2024-10-11 14:27:27,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:27:27,510 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:27:27,548 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-nzb-file-subst.wvr.c[6540,6553] [2024-10-11 14:27:27,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:27:27,570 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:27:27,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27 WrapperNode [2024-10-11 14:27:27,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:27:27,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:27:27,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:27:27,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:27:27,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,635 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 603 [2024-10-11 14:27:27,635 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:27:27,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:27:27,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:27:27,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:27:27,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,680 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-11 14:27:27,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,723 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:27:27,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:27:27,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:27:27,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:27:27,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (1/1) ... [2024-10-11 14:27:27,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:27:27,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:27:27,793 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 14:27:27,797 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 14:27:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:27:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:27:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:27:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:27:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:27:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:27:27,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:27:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:27:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:27:27,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:27:27,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:27:27,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:27:27,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:27:27,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:27:27,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:27:27,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:27:27,851 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 14:27:27,979 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:27:27,982 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:27:28,869 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:27:28,869 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:27:29,723 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:27:29,724 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 14:27:29,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:29 BoogieIcfgContainer [2024-10-11 14:27:29,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:27:29,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:27:29,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:27:29,731 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:27:29,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:27" (1/3) ... [2024-10-11 14:27:29,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1027d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:29, skipping insertion in model container [2024-10-11 14:27:29,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27" (2/3) ... [2024-10-11 14:27:29,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1027d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:29, skipping insertion in model container [2024-10-11 14:27:29,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:29" (3/3) ... [2024-10-11 14:27:29,736 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2024-10-11 14:27:29,754 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:27:29,754 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:27:29,754 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:27:29,868 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:27:29,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-10-11 14:27:29,945 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-10-11 14:27:29,946 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:27:29,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-11 14:27:29,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-10-11 14:27:29,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-10-11 14:27:29,960 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:27:29,966 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;@69582df2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:27:29,967 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:27:29,984 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:27:29,985 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-10-11 14:27:29,985 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:27:29,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:29,986 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:29,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:29,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:29,991 INFO L85 PathProgramCache]: Analyzing trace with hash 46384734, now seen corresponding path program 1 times [2024-10-11 14:27:30,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:30,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663350246] [2024-10-11 14:27:30,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:30,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:30,574 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 14:27:30,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:30,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663350246] [2024-10-11 14:27:30,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663350246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:30,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:30,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:27:30,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091920199] [2024-10-11 14:27:30,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:30,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:27:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:30,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:27:30,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:27:30,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:27:30,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 14:27:30,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:30,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:27:30,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:31,478 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2024-10-11 14:27:31,479 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-10-11 14:27:31,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3237 events. 2373/3237 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12261 event pairs, 1692 based on Foata normal form. 0/2556 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2024-10-11 14:27:31,501 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-10-11 14:27:31,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2024-10-11 14:27:31,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:27:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:27:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-10-11 14:27:31,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-10-11 14:27:31,517 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2024-10-11 14:27:31,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2024-10-11 14:27:31,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:27:31,531 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2024-10-11 14:27:31,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2024-10-11 14:27:31,539 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-10-11 14:27:31,540 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2024-10-11 14:27:31,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 14:27:31,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:31,541 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:31,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:27:31,542 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:31,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:31,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2050377923, now seen corresponding path program 1 times [2024-10-11 14:27:31,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:31,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76592943] [2024-10-11 14:27:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:31,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:27:31,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:31,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76592943] [2024-10-11 14:27:31,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76592943] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:27:31,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118789284] [2024-10-11 14:27:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:31,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:31,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:27:31,749 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 14:27:31,750 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 14:27:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:32,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 14:27:32,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:27:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:27:32,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:27:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:27:32,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118789284] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:27:32,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:27:32,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-11 14:27:32,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131679867] [2024-10-11 14:27:32,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:27:32,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:27:32,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:32,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:27:32,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:27:32,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:27:32,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 14:27:32,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:32,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:27:32,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:32,862 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2024-10-11 14:27:32,862 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-10-11 14:27:32,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3246 events. 2373/3246 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12260 event pairs, 1692 based on Foata normal form. 6/2573 useless extension candidates. Maximal degree in co-relation 6525. Up to 3234 conditions per place. [2024-10-11 14:27:32,877 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2024-10-11 14:27:32,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2024-10-11 14:27:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:27:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:27:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-10-11 14:27:32,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2024-10-11 14:27:32,882 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2024-10-11 14:27:32,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2024-10-11 14:27:32,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:27:32,886 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2024-10-11 14:27:32,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2024-10-11 14:27:32,887 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-10-11 14:27:32,887 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2024-10-11 14:27:32,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 14:27:32,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:32,889 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:32,907 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 14:27:33,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:33,090 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:33,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:33,091 INFO L85 PathProgramCache]: Analyzing trace with hash 154946276, now seen corresponding path program 2 times [2024-10-11 14:27:33,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:33,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284589965] [2024-10-11 14:27:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:33,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 14:27:33,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:33,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284589965] [2024-10-11 14:27:33,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284589965] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:27:33,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412627340] [2024-10-11 14:27:33,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:27:33,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:33,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:27:33,375 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 14:27:33,376 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 14:27:33,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 14:27:33,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:27:33,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 14:27:33,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:27:35,636 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 14:27:35,637 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:27:35,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412627340] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:35,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:27:35,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-10-11 14:27:35,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370536711] [2024-10-11 14:27:35,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:35,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:27:35,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:35,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:27:35,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 14:27:35,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:27:35,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:35,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:35,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:27:35,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:36,953 INFO L124 PetriNetUnfolderBase]: 3141/4412 cut-off events. [2024-10-11 14:27:36,953 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-11 14:27:36,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8954 conditions, 4412 events. 3141/4412 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 19275 event pairs, 1692 based on Foata normal form. 1/3561 useless extension candidates. Maximal degree in co-relation 8866. Up to 3132 conditions per place. [2024-10-11 14:27:36,975 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 93 selfloop transitions, 2 changer transitions 8/104 dead transitions. [2024-10-11 14:27:36,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 104 transitions, 530 flow [2024-10-11 14:27:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:27:36,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:27:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-10-11 14:27:36,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-10-11 14:27:36,977 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 112 transitions. [2024-10-11 14:27:36,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 104 transitions, 530 flow [2024-10-11 14:27:36,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 104 transitions, 506 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-11 14:27:36,981 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 203 flow [2024-10-11 14:27:36,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2024-10-11 14:27:36,982 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-10-11 14:27:36,982 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 203 flow [2024-10-11 14:27:36,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:36,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:36,983 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:37,000 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 14:27:37,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:37,187 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:37,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:37,188 INFO L85 PathProgramCache]: Analyzing trace with hash -507933382, now seen corresponding path program 3 times [2024-10-11 14:27:37,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:37,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733950735] [2024-10-11 14:27:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:37,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 14:27:37,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:37,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733950735] [2024-10-11 14:27:37,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733950735] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:27:37,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887248551] [2024-10-11 14:27:37,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:27:37,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:37,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:27:37,464 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 14:27:37,481 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 14:27:37,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-11 14:27:37,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:27:37,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 14:27:37,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:27:39,373 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 14:27:39,373 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:27:39,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887248551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:39,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:27:39,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-10-11 14:27:39,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905949154] [2024-10-11 14:27:39,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:39,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:27:39,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:39,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:27:39,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 14:27:39,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:27:39,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:39,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:39,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:27:39,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:40,876 INFO L124 PetriNetUnfolderBase]: 3904/5601 cut-off events. [2024-10-11 14:27:40,877 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-10-11 14:27:40,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11880 conditions, 5601 events. 3904/5601 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26283 event pairs, 2311 based on Foata normal form. 1/5093 useless extension candidates. Maximal degree in co-relation 11841. Up to 3990 conditions per place. [2024-10-11 14:27:40,913 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 89 selfloop transitions, 3 changer transitions 8/101 dead transitions. [2024-10-11 14:27:40,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 517 flow [2024-10-11 14:27:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:27:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:27:40,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-10-11 14:27:40,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44081632653061226 [2024-10-11 14:27:40,916 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 203 flow. Second operand 5 states and 108 transitions. [2024-10-11 14:27:40,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 517 flow [2024-10-11 14:27:40,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 101 transitions, 508 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 14:27:40,923 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 220 flow [2024-10-11 14:27:40,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-10-11 14:27:40,924 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-10-11 14:27:40,925 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 220 flow [2024-10-11 14:27:40,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:40,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:40,925 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:40,943 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 14:27:41,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:41,126 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:41,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:41,127 INFO L85 PathProgramCache]: Analyzing trace with hash -105214844, now seen corresponding path program 4 times [2024-10-11 14:27:41,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:41,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406908707] [2024-10-11 14:27:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:41,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 14:27:41,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:41,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406908707] [2024-10-11 14:27:41,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406908707] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:27:41,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087235108] [2024-10-11 14:27:41,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:27:41,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:41,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:27:41,377 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 14:27:41,378 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 14:27:41,582 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:27:41,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:27:41,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:27:41,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:27:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 14:27:41,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:27:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 14:27:41,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087235108] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:27:41,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:27:41,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-11 14:27:41,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445680064] [2024-10-11 14:27:41,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:27:41,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:27:41,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:41,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:27:41,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:27:41,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:27:41,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 220 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 14:27:41,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:41,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:27:41,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:42,691 INFO L124 PetriNetUnfolderBase]: 3875/5552 cut-off events. [2024-10-11 14:27:42,691 INFO L125 PetriNetUnfolderBase]: For 2123/2123 co-relation queries the response was YES. [2024-10-11 14:27:42,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12312 conditions, 5552 events. 3875/5552 cut-off events. For 2123/2123 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25529 event pairs, 3170 based on Foata normal form. 1/5044 useless extension candidates. Maximal degree in co-relation 12271. Up to 5531 conditions per place. [2024-10-11 14:27:42,728 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 40 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2024-10-11 14:27:42,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 354 flow [2024-10-11 14:27:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:27:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:27:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-10-11 14:27:42,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2024-10-11 14:27:42,732 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 220 flow. Second operand 7 states and 87 transitions. [2024-10-11 14:27:42,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 354 flow [2024-10-11 14:27:42,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 348 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 14:27:42,739 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 282 flow [2024-10-11 14:27:42,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-10-11 14:27:42,741 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-10-11 14:27:42,742 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 282 flow [2024-10-11 14:27:42,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 14:27:42,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:42,743 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:42,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 14:27:42,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:42,944 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:42,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:42,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1674624371, now seen corresponding path program 5 times [2024-10-11 14:27:42,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:42,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914939863] [2024-10-11 14:27:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:42,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-11 14:27:45,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:45,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914939863] [2024-10-11 14:27:45,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914939863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:45,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:45,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:27:45,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527218936] [2024-10-11 14:27:45,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:45,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:27:45,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:45,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:27:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:27:45,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:27:45,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:45,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:45,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:27:45,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:47,318 INFO L124 PetriNetUnfolderBase]: 9691/13752 cut-off events. [2024-10-11 14:27:47,318 INFO L125 PetriNetUnfolderBase]: For 2785/2785 co-relation queries the response was YES. [2024-10-11 14:27:47,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29397 conditions, 13752 events. 9691/13752 cut-off events. For 2785/2785 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 73843 event pairs, 2330 based on Foata normal form. 1/12189 useless extension candidates. Maximal degree in co-relation 29284. Up to 4984 conditions per place. [2024-10-11 14:27:47,379 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 145 selfloop transitions, 38 changer transitions 1/185 dead transitions. [2024-10-11 14:27:47,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 185 transitions, 970 flow [2024-10-11 14:27:47,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:27:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:27:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-10-11 14:27:47,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5626822157434402 [2024-10-11 14:27:47,382 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 282 flow. Second operand 7 states and 193 transitions. [2024-10-11 14:27:47,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 185 transitions, 970 flow [2024-10-11 14:27:47,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 185 transitions, 934 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-11 14:27:47,393 INFO L231 Difference]: Finished difference. Result has 68 places, 98 transitions, 541 flow [2024-10-11 14:27:47,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=541, PETRI_PLACES=68, PETRI_TRANSITIONS=98} [2024-10-11 14:27:47,393 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-10-11 14:27:47,393 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 98 transitions, 541 flow [2024-10-11 14:27:47,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:47,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:47,394 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:47,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:27:47,396 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:47,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:47,396 INFO L85 PathProgramCache]: Analyzing trace with hash -763439597, now seen corresponding path program 6 times [2024-10-11 14:27:47,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:47,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164430428] [2024-10-11 14:27:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:47,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-11 14:27:49,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:49,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164430428] [2024-10-11 14:27:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164430428] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:49,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:49,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:27:49,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041569924] [2024-10-11 14:27:49,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:49,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:27:49,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:49,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:27:49,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:27:49,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:27:49,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 98 transitions, 541 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 14:27:49,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:49,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:27:49,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:52,026 INFO L124 PetriNetUnfolderBase]: 12446/17611 cut-off events. [2024-10-11 14:27:52,027 INFO L125 PetriNetUnfolderBase]: For 13446/13446 co-relation queries the response was YES. [2024-10-11 14:27:52,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45920 conditions, 17611 events. 12446/17611 cut-off events. For 13446/13446 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 97503 event pairs, 5145 based on Foata normal form. 1/17142 useless extension candidates. Maximal degree in co-relation 45820. Up to 8297 conditions per place. [2024-10-11 14:27:52,131 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 145 selfloop transitions, 44 changer transitions 2/192 dead transitions. [2024-10-11 14:27:52,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 192 transitions, 1297 flow [2024-10-11 14:27:52,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:27:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:27:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-10-11 14:27:52,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-10-11 14:27:52,134 INFO L175 Difference]: Start difference. First operand has 68 places, 98 transitions, 541 flow. Second operand 6 states and 135 transitions. [2024-10-11 14:27:52,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 192 transitions, 1297 flow [2024-10-11 14:27:52,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 192 transitions, 1289 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-10-11 14:27:52,248 INFO L231 Difference]: Finished difference. Result has 77 places, 131 transitions, 948 flow [2024-10-11 14:27:52,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=948, PETRI_PLACES=77, PETRI_TRANSITIONS=131} [2024-10-11 14:27:52,250 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-10-11 14:27:52,250 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 131 transitions, 948 flow [2024-10-11 14:27:52,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 14:27:52,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:52,251 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:52,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:27:52,252 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:52,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1901130979, now seen corresponding path program 7 times [2024-10-11 14:27:52,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:52,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27309654] [2024-10-11 14:27:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:52,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-11 14:27:53,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:53,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27309654] [2024-10-11 14:27:53,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27309654] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:53,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:53,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:27:53,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172216352] [2024-10-11 14:27:53,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:53,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:27:53,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:27:53,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:27:53,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:27:53,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 131 transitions, 948 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:53,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:53,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:27:53,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:57,299 INFO L124 PetriNetUnfolderBase]: 13202/18758 cut-off events. [2024-10-11 14:27:57,299 INFO L125 PetriNetUnfolderBase]: For 29364/29364 co-relation queries the response was YES. [2024-10-11 14:27:57,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54538 conditions, 18758 events. 13202/18758 cut-off events. For 29364/29364 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 106657 event pairs, 6258 based on Foata normal form. 1/18289 useless extension candidates. Maximal degree in co-relation 54432. Up to 11902 conditions per place. [2024-10-11 14:27:57,410 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 183 selfloop transitions, 41 changer transitions 2/227 dead transitions. [2024-10-11 14:27:57,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 227 transitions, 1881 flow [2024-10-11 14:27:57,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:27:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:27:57,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-10-11 14:27:57,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-10-11 14:27:57,414 INFO L175 Difference]: Start difference. First operand has 77 places, 131 transitions, 948 flow. Second operand 5 states and 135 transitions. [2024-10-11 14:27:57,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 227 transitions, 1881 flow [2024-10-11 14:27:57,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 227 transitions, 1868 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 14:27:57,536 INFO L231 Difference]: Finished difference. Result has 83 places, 156 transitions, 1348 flow [2024-10-11 14:27:57,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1348, PETRI_PLACES=83, PETRI_TRANSITIONS=156} [2024-10-11 14:27:57,537 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-10-11 14:27:57,537 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 156 transitions, 1348 flow [2024-10-11 14:27:57,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:57,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:57,538 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:27:57,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:27:57,538 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:57,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:57,538 INFO L85 PathProgramCache]: Analyzing trace with hash 186084019, now seen corresponding path program 8 times [2024-10-11 14:27:57,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:57,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191077655] [2024-10-11 14:27:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:57,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-11 14:27:59,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:59,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191077655] [2024-10-11 14:27:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191077655] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:59,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:59,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:27:59,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395955107] [2024-10-11 14:27:59,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:59,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:27:59,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:59,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:27:59,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:27:59,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:27:59,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 156 transitions, 1348 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:27:59,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:59,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:27:59,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:02,587 INFO L124 PetriNetUnfolderBase]: 13481/19175 cut-off events. [2024-10-11 14:28:02,588 INFO L125 PetriNetUnfolderBase]: For 44692/44692 co-relation queries the response was YES. [2024-10-11 14:28:02,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59478 conditions, 19175 events. 13481/19175 cut-off events. For 44692/44692 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 108936 event pairs, 5441 based on Foata normal form. 1/18706 useless extension candidates. Maximal degree in co-relation 59369. Up to 8982 conditions per place. [2024-10-11 14:28:02,700 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 168 selfloop transitions, 47 changer transitions 2/218 dead transitions. [2024-10-11 14:28:02,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 218 transitions, 2057 flow [2024-10-11 14:28:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-11 14:28:02,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-10-11 14:28:02,702 INFO L175 Difference]: Start difference. First operand has 83 places, 156 transitions, 1348 flow. Second operand 5 states and 129 transitions. [2024-10-11 14:28:02,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 218 transitions, 2057 flow [2024-10-11 14:28:02,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 218 transitions, 2049 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-10-11 14:28:02,964 INFO L231 Difference]: Finished difference. Result has 89 places, 165 transitions, 1583 flow [2024-10-11 14:28:02,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1583, PETRI_PLACES=89, PETRI_TRANSITIONS=165} [2024-10-11 14:28:02,965 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-10-11 14:28:02,965 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 165 transitions, 1583 flow [2024-10-11 14:28:02,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:02,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:02,966 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:02,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:28:02,966 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:02,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:02,967 INFO L85 PathProgramCache]: Analyzing trace with hash 816489292, now seen corresponding path program 1 times [2024-10-11 14:28:02,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:02,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663362367] [2024-10-11 14:28:02,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:02,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-11 14:28:03,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:03,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663362367] [2024-10-11 14:28:03,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663362367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:03,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:03,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:28:03,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887870544] [2024-10-11 14:28:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:03,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:28:03,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:28:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:28:03,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:03,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 165 transitions, 1583 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:03,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:03,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:03,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:07,294 INFO L124 PetriNetUnfolderBase]: 16990/24071 cut-off events. [2024-10-11 14:28:07,294 INFO L125 PetriNetUnfolderBase]: For 63823/63823 co-relation queries the response was YES. [2024-10-11 14:28:07,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76576 conditions, 24071 events. 16990/24071 cut-off events. For 63823/63823 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 140126 event pairs, 10535 based on Foata normal form. 470/23601 useless extension candidates. Maximal degree in co-relation 76464. Up to 19182 conditions per place. [2024-10-11 14:28:07,450 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 203 selfloop transitions, 8 changer transitions 1/213 dead transitions. [2024-10-11 14:28:07,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 213 transitions, 2325 flow [2024-10-11 14:28:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:28:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:28:07,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-11 14:28:07,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-10-11 14:28:07,452 INFO L175 Difference]: Start difference. First operand has 89 places, 165 transitions, 1583 flow. Second operand 3 states and 78 transitions. [2024-10-11 14:28:07,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 213 transitions, 2325 flow [2024-10-11 14:28:07,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 213 transitions, 2261 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-10-11 14:28:07,860 INFO L231 Difference]: Finished difference. Result has 91 places, 166 transitions, 1553 flow [2024-10-11 14:28:07,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1553, PETRI_PLACES=91, PETRI_TRANSITIONS=166} [2024-10-11 14:28:07,861 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-10-11 14:28:07,861 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 166 transitions, 1553 flow [2024-10-11 14:28:07,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:07,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:07,861 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:07,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:28:07,862 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:07,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:07,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1420779406, now seen corresponding path program 1 times [2024-10-11 14:28:07,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:07,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396104978] [2024-10-11 14:28:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:07,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-11 14:28:08,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:08,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396104978] [2024-10-11 14:28:08,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396104978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:08,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:08,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:08,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941411781] [2024-10-11 14:28:08,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:08,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:28:08,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:08,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:28:08,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:28:08,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:08,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 166 transitions, 1553 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:08,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:08,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:08,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:12,189 INFO L124 PetriNetUnfolderBase]: 17679/25098 cut-off events. [2024-10-11 14:28:12,189 INFO L125 PetriNetUnfolderBase]: For 65010/65010 co-relation queries the response was YES. [2024-10-11 14:28:12,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80228 conditions, 25098 events. 17679/25098 cut-off events. For 65010/65010 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 146427 event pairs, 7046 based on Foata normal form. 3/25101 useless extension candidates. Maximal degree in co-relation 80115. Up to 19568 conditions per place. [2024-10-11 14:28:12,343 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 159 selfloop transitions, 13 changer transitions 59/232 dead transitions. [2024-10-11 14:28:12,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 232 transitions, 2482 flow [2024-10-11 14:28:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:28:12,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:28:12,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-10-11 14:28:12,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-10-11 14:28:12,345 INFO L175 Difference]: Start difference. First operand has 91 places, 166 transitions, 1553 flow. Second operand 4 states and 103 transitions. [2024-10-11 14:28:12,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 232 transitions, 2482 flow [2024-10-11 14:28:12,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 232 transitions, 2468 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:28:12,931 INFO L231 Difference]: Finished difference. Result has 96 places, 148 transitions, 1435 flow [2024-10-11 14:28:12,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1435, PETRI_PLACES=96, PETRI_TRANSITIONS=148} [2024-10-11 14:28:12,932 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-10-11 14:28:12,932 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 148 transitions, 1435 flow [2024-10-11 14:28:12,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:12,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:12,933 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:12,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:28:12,933 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:12,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:12,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1060390130, now seen corresponding path program 1 times [2024-10-11 14:28:12,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:12,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939346619] [2024-10-11 14:28:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:12,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-11 14:28:13,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939346619] [2024-10-11 14:28:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939346619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:13,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:13,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:13,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210613757] [2024-10-11 14:28:13,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:13,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:28:13,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:13,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:28:13,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:28:13,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:13,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 148 transitions, 1435 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:13,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:13,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:13,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:16,910 INFO L124 PetriNetUnfolderBase]: 16401/23401 cut-off events. [2024-10-11 14:28:16,911 INFO L125 PetriNetUnfolderBase]: For 58266/58266 co-relation queries the response was YES. [2024-10-11 14:28:16,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73764 conditions, 23401 events. 16401/23401 cut-off events. For 58266/58266 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 135640 event pairs, 6717 based on Foata normal form. 4/23405 useless extension candidates. Maximal degree in co-relation 73657. Up to 18828 conditions per place. [2024-10-11 14:28:17,038 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 160 selfloop transitions, 15 changer transitions 45/221 dead transitions. [2024-10-11 14:28:17,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 221 transitions, 2461 flow [2024-10-11 14:28:17,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:28:17,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:28:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-10-11 14:28:17,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-10-11 14:28:17,039 INFO L175 Difference]: Start difference. First operand has 96 places, 148 transitions, 1435 flow. Second operand 4 states and 101 transitions. [2024-10-11 14:28:17,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 221 transitions, 2461 flow [2024-10-11 14:28:17,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 221 transitions, 2404 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:17,404 INFO L231 Difference]: Finished difference. Result has 97 places, 141 transitions, 1381 flow [2024-10-11 14:28:17,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1381, PETRI_PLACES=97, PETRI_TRANSITIONS=141} [2024-10-11 14:28:17,404 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-10-11 14:28:17,404 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 141 transitions, 1381 flow [2024-10-11 14:28:17,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:17,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:17,405 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:17,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 14:28:17,405 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:17,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:17,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1898160330, now seen corresponding path program 2 times [2024-10-11 14:28:17,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:17,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182801469] [2024-10-11 14:28:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-11 14:28:17,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:17,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182801469] [2024-10-11 14:28:17,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182801469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:17,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:17,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:17,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933538480] [2024-10-11 14:28:17,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:17,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:17,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:17,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:17,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:17,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 141 transitions, 1381 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 14:28:17,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:17,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:17,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand