./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:43:10,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:43:10,713 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:43:10,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:43:10,717 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:43:10,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:43:10,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:43:10,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:43:10,736 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:43:10,736 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:43:10,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:43:10,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:43:10,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:43:10,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:43:10,737 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:43:10,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:43:10,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:43:10,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:43:10,738 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e [2025-01-09 16:43:10,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:43:10,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:43:10,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:43:10,944 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:43:10,944 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:43:10,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2025-01-09 16:43:12,137 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b473b86ab/81c86017aaad49528cb38ea76dce2220/FLAG3020518ec [2025-01-09 16:43:12,387 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:43:12,391 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2025-01-09 16:43:12,400 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b473b86ab/81c86017aaad49528cb38ea76dce2220/FLAG3020518ec [2025-01-09 16:43:12,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b473b86ab/81c86017aaad49528cb38ea76dce2220 [2025-01-09 16:43:12,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:43:12,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:43:12,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:43:12,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:43:12,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:43:12,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359650b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12, skipping insertion in model container [2025-01-09 16:43:12,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,432 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:43:12,630 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4643,4656] [2025-01-09 16:43:12,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:43:12,646 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:43:12,661 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4643,4656] [2025-01-09 16:43:12,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:43:12,673 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:43:12,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12 WrapperNode [2025-01-09 16:43:12,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:43:12,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:43:12,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:43:12,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:43:12,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,712 INFO L138 Inliner]: procedures = 24, calls = 53, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 325 [2025-01-09 16:43:12,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:43:12,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:43:12,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:43:12,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:43:12,720 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,726 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,737 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 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]. [2025-01-09 16:43:12,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,738 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,743 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,744 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:43:12,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:43:12,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:43:12,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:43:12,752 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (1/1) ... [2025-01-09 16:43:12,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:43:12,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:43:12,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:43:12,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:43:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:43:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 16:43:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 16:43:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 16:43:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 16:43:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-09 16:43:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-09 16:43:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:43:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:43:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 16:43:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 16:43:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-09 16:43:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-09 16:43:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 16:43:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:43:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:43:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 16:43:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 16:43:12,807 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:43:12,907 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:43:12,909 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:43:13,284 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:43:13,284 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:43:13,651 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:43:13,652 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2025-01-09 16:43:13,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:43:13 BoogieIcfgContainer [2025-01-09 16:43:13,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:43:13,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:43:13,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:43:13,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:43:13,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:43:12" (1/3) ... [2025-01-09 16:43:13,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42987672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:43:13, skipping insertion in model container [2025-01-09 16:43:13,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:43:12" (2/3) ... [2025-01-09 16:43:13,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42987672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:43:13, skipping insertion in model container [2025-01-09 16:43:13,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:43:13" (3/3) ... [2025-01-09 16:43:13,659 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2025-01-09 16:43:13,672 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:43:13,674 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-commit-1.wvr.c that has 4 procedures, 40 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-01-09 16:43:13,674 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:43:13,726 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-09 16:43:13,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 48 transitions, 117 flow [2025-01-09 16:43:13,786 INFO L124 PetriNetUnfolderBase]: 9/45 cut-off events. [2025-01-09 16:43:13,787 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-09 16:43:13,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 9/45 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 82 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2025-01-09 16:43:13,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 48 transitions, 117 flow [2025-01-09 16:43:13,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 106 flow [2025-01-09 16:43:13,803 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:43:13,813 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;@71a0d8e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:43:13,814 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-09 16:43:13,830 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:43:13,831 INFO L124 PetriNetUnfolderBase]: 9/43 cut-off events. [2025-01-09 16:43:13,831 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-09 16:43:13,831 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:13,831 INFO L206 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] [2025-01-09 16:43:13,832 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)] === [2025-01-09 16:43:13,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:13,836 INFO L85 PathProgramCache]: Analyzing trace with hash 719273377, now seen corresponding path program 1 times [2025-01-09 16:43:13,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:13,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538714071] [2025-01-09 16:43:13,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:13,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:13,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 16:43:13,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 16:43:13,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:13,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:43:14,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:14,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538714071] [2025-01-09 16:43:14,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538714071] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:14,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:43:14,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:43:14,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933418316] [2025-01-09 16:43:14,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:14,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 16:43:14,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:14,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 16:43:14,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 16:43:14,049 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:14,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:14,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:14,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:14,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:14,485 INFO L124 PetriNetUnfolderBase]: 2536/3625 cut-off events. [2025-01-09 16:43:14,486 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2025-01-09 16:43:14,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7442 conditions, 3625 events. 2536/3625 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 16688 event pairs, 2134 based on Foata normal form. 0/3214 useless extension candidates. Maximal degree in co-relation 7035. Up to 3610 conditions per place. [2025-01-09 16:43:14,512 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 37 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2025-01-09 16:43:14,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 174 flow [2025-01-09 16:43:14,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 16:43:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 16:43:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2025-01-09 16:43:14,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-01-09 16:43:14,525 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 106 flow. Second operand 2 states and 54 transitions. [2025-01-09 16:43:14,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 174 flow [2025-01-09 16:43:14,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-01-09 16:43:14,535 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 88 flow [2025-01-09 16:43:14,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2025-01-09 16:43:14,542 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2025-01-09 16:43:14,544 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 88 flow [2025-01-09 16:43:14,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:14,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:14,544 INFO L206 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] [2025-01-09 16:43:14,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:43:14,545 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)] === [2025-01-09 16:43:14,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:14,545 INFO L85 PathProgramCache]: Analyzing trace with hash 117298385, now seen corresponding path program 1 times [2025-01-09 16:43:14,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:14,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046351829] [2025-01-09 16:43:14,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:14,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:14,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 16:43:14,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:43:14,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:14,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:43:14,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:14,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046351829] [2025-01-09 16:43:14,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046351829] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:14,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:43:14,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:43:14,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384071837] [2025-01-09 16:43:14,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:14,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:43:14,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:14,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:43:14,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:43:14,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:14,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:14,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:14,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:14,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:15,259 INFO L124 PetriNetUnfolderBase]: 3499/4992 cut-off events. [2025-01-09 16:43:15,259 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2025-01-09 16:43:15,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10074 conditions, 4992 events. 3499/4992 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 25035 event pairs, 876 based on Foata normal form. 1/4373 useless extension candidates. Maximal degree in co-relation 10071. Up to 3852 conditions per place. [2025-01-09 16:43:15,282 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 56 selfloop transitions, 4 changer transitions 1/65 dead transitions. [2025-01-09 16:43:15,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 263 flow [2025-01-09 16:43:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:43:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:43:15,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2025-01-09 16:43:15,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2025-01-09 16:43:15,284 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 88 flow. Second operand 3 states and 83 transitions. [2025-01-09 16:43:15,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 263 flow [2025-01-09 16:43:15,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 263 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 16:43:15,286 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 114 flow [2025-01-09 16:43:15,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2025-01-09 16:43:15,287 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2025-01-09 16:43:15,287 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 114 flow [2025-01-09 16:43:15,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:15,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:15,287 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2025-01-09 16:43:15,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:43:15,288 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)] === [2025-01-09 16:43:15,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:15,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1673652478, now seen corresponding path program 1 times [2025-01-09 16:43:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:15,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394475234] [2025-01-09 16:43:15,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:15,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:15,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-09 16:43:15,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 16:43:15,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:15,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:43:15,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:15,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394475234] [2025-01-09 16:43:15,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394475234] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:15,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:43:15,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:43:15,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801236592] [2025-01-09 16:43:15,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:15,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:43:15,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:15,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:43:15,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:43:15,386 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:15,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:15,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:15,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:15,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:15,684 INFO L124 PetriNetUnfolderBase]: 4083/5889 cut-off events. [2025-01-09 16:43:15,684 INFO L125 PetriNetUnfolderBase]: For 539/539 co-relation queries the response was YES. [2025-01-09 16:43:15,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12621 conditions, 5889 events. 4083/5889 cut-off events. For 539/539 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 29716 event pairs, 1821 based on Foata normal form. 158/5248 useless extension candidates. Maximal degree in co-relation 12616. Up to 3356 conditions per place. [2025-01-09 16:43:15,751 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 62 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2025-01-09 16:43:15,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 298 flow [2025-01-09 16:43:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:43:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:43:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2025-01-09 16:43:15,752 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-01-09 16:43:15,752 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 114 flow. Second operand 3 states and 84 transitions. [2025-01-09 16:43:15,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 298 flow [2025-01-09 16:43:15,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 68 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:43:15,754 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 118 flow [2025-01-09 16:43:15,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2025-01-09 16:43:15,754 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2025-01-09 16:43:15,754 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 118 flow [2025-01-09 16:43:15,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:15,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:15,755 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2025-01-09 16:43:15,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:43:15,755 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)] === [2025-01-09 16:43:15,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:15,756 INFO L85 PathProgramCache]: Analyzing trace with hash -274555564, now seen corresponding path program 1 times [2025-01-09 16:43:15,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:15,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48775576] [2025-01-09 16:43:15,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:15,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:15,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-09 16:43:15,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 16:43:15,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:15,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:43:15,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:15,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48775576] [2025-01-09 16:43:15,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48775576] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:15,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:43:15,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:43:15,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899305588] [2025-01-09 16:43:15,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:15,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:43:15,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:15,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:43:15,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:43:15,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:15,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:15,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:15,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:15,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:16,157 INFO L124 PetriNetUnfolderBase]: 3703/5362 cut-off events. [2025-01-09 16:43:16,157 INFO L125 PetriNetUnfolderBase]: For 685/685 co-relation queries the response was YES. [2025-01-09 16:43:16,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11724 conditions, 5362 events. 3703/5362 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 26246 event pairs, 1373 based on Foata normal form. 94/4782 useless extension candidates. Maximal degree in co-relation 11718. Up to 3376 conditions per place. [2025-01-09 16:43:16,180 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 57 selfloop transitions, 2 changer transitions 5/68 dead transitions. [2025-01-09 16:43:16,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 301 flow [2025-01-09 16:43:16,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:43:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:43:16,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2025-01-09 16:43:16,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2025-01-09 16:43:16,183 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 118 flow. Second operand 3 states and 86 transitions. [2025-01-09 16:43:16,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 301 flow [2025-01-09 16:43:16,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 68 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:43:16,185 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 124 flow [2025-01-09 16:43:16,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2025-01-09 16:43:16,185 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2025-01-09 16:43:16,185 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 124 flow [2025-01-09 16:43:16,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:16,185 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:16,185 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1] [2025-01-09 16:43:16,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:43:16,186 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)] === [2025-01-09 16:43:16,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:16,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1642362559, now seen corresponding path program 1 times [2025-01-09 16:43:16,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:16,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634700158] [2025-01-09 16:43:16,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:16,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:16,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 16:43:16,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 16:43:16,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:16,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:43:16,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:16,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634700158] [2025-01-09 16:43:16,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634700158] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:16,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:43:16,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:43:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117920101] [2025-01-09 16:43:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:16,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:43:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:16,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:43:16,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:43:16,292 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:16,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2025-01-09 16:43:16,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:16,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:16,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:16,530 INFO L124 PetriNetUnfolderBase]: 2561/3736 cut-off events. [2025-01-09 16:43:16,530 INFO L125 PetriNetUnfolderBase]: For 807/807 co-relation queries the response was YES. [2025-01-09 16:43:16,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8252 conditions, 3736 events. 2561/3736 cut-off events. For 807/807 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16316 event pairs, 1346 based on Foata normal form. 62/3265 useless extension candidates. Maximal degree in co-relation 8245. Up to 2767 conditions per place. [2025-01-09 16:43:16,539 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 48 selfloop transitions, 2 changer transitions 7/61 dead transitions. [2025-01-09 16:43:16,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 275 flow [2025-01-09 16:43:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:43:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:43:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2025-01-09 16:43:16,543 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2025-01-09 16:43:16,543 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 124 flow. Second operand 3 states and 76 transitions. [2025-01-09 16:43:16,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 275 flow [2025-01-09 16:43:16,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:43:16,544 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 134 flow [2025-01-09 16:43:16,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2025-01-09 16:43:16,545 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2025-01-09 16:43:16,545 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 134 flow [2025-01-09 16:43:16,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2025-01-09 16:43:16,545 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:16,545 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:16,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:43:16,546 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)] === [2025-01-09 16:43:16,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:16,546 INFO L85 PathProgramCache]: Analyzing trace with hash 214397076, now seen corresponding path program 1 times [2025-01-09 16:43:16,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:16,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279010842] [2025-01-09 16:43:16,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:16,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:16,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 16:43:16,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:43:16,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:16,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:43:16,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:16,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279010842] [2025-01-09 16:43:16,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279010842] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:16,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:43:16,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:43:16,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910234325] [2025-01-09 16:43:16,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:16,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:43:16,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:16,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:43:16,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:43:16,702 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:16,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:16,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:16,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:16,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:17,056 INFO L124 PetriNetUnfolderBase]: 3171/4704 cut-off events. [2025-01-09 16:43:17,056 INFO L125 PetriNetUnfolderBase]: For 777/777 co-relation queries the response was YES. [2025-01-09 16:43:17,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10436 conditions, 4704 events. 3171/4704 cut-off events. For 777/777 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 22273 event pairs, 2856 based on Foata normal form. 56/4041 useless extension candidates. Maximal degree in co-relation 10428. Up to 3723 conditions per place. [2025-01-09 16:43:17,072 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 40 selfloop transitions, 2 changer transitions 26/72 dead transitions. [2025-01-09 16:43:17,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 72 transitions, 330 flow [2025-01-09 16:43:17,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:43:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:43:17,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2025-01-09 16:43:17,073 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.484375 [2025-01-09 16:43:17,073 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 134 flow. Second operand 4 states and 93 transitions. [2025-01-09 16:43:17,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 72 transitions, 330 flow [2025-01-09 16:43:17,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 72 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:43:17,075 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 146 flow [2025-01-09 16:43:17,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2025-01-09 16:43:17,075 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2025-01-09 16:43:17,075 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 146 flow [2025-01-09 16:43:17,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:17,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:17,076 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:17,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 16:43:17,076 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)] === [2025-01-09 16:43:17,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:17,076 INFO L85 PathProgramCache]: Analyzing trace with hash 248262998, now seen corresponding path program 1 times [2025-01-09 16:43:17,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:17,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865191225] [2025-01-09 16:43:17,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:17,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:17,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 16:43:17,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 16:43:17,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:17,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:43:17,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:17,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865191225] [2025-01-09 16:43:17,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865191225] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:17,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:43:17,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:43:17,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577971200] [2025-01-09 16:43:17,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:17,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:43:17,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:17,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:43:17,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:43:17,258 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:17,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:17,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:17,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:17,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:17,584 INFO L124 PetriNetUnfolderBase]: 3336/4963 cut-off events. [2025-01-09 16:43:17,584 INFO L125 PetriNetUnfolderBase]: For 928/928 co-relation queries the response was YES. [2025-01-09 16:43:17,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11111 conditions, 4963 events. 3336/4963 cut-off events. For 928/928 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 23819 event pairs, 3018 based on Foata normal form. 14/4232 useless extension candidates. Maximal degree in co-relation 11101. Up to 3721 conditions per place. [2025-01-09 16:43:17,600 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 40 selfloop transitions, 3 changer transitions 30/77 dead transitions. [2025-01-09 16:43:17,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 374 flow [2025-01-09 16:43:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:43:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:43:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2025-01-09 16:43:17,601 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2025-01-09 16:43:17,601 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 146 flow. Second operand 4 states and 97 transitions. [2025-01-09 16:43:17,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 374 flow [2025-01-09 16:43:17,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 366 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-01-09 16:43:17,604 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 158 flow [2025-01-09 16:43:17,604 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2025-01-09 16:43:17,605 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2025-01-09 16:43:17,605 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 158 flow [2025-01-09 16:43:17,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:17,605 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:17,605 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:17,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 16:43:17,606 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)] === [2025-01-09 16:43:17,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:17,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1149507976, now seen corresponding path program 1 times [2025-01-09 16:43:17,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:17,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400108700] [2025-01-09 16:43:17,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:17,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:17,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 16:43:17,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:43:17,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:17,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:43:17,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:17,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400108700] [2025-01-09 16:43:17,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400108700] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:17,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:43:17,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:43:17,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046206611] [2025-01-09 16:43:17,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:17,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:43:17,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:17,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:43:17,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:43:17,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:17,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:17,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:17,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:17,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:18,037 INFO L124 PetriNetUnfolderBase]: 3297/4896 cut-off events. [2025-01-09 16:43:18,038 INFO L125 PetriNetUnfolderBase]: For 813/813 co-relation queries the response was YES. [2025-01-09 16:43:18,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10867 conditions, 4896 events. 3297/4896 cut-off events. For 813/813 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 23408 event pairs, 2984 based on Foata normal form. 10/4167 useless extension candidates. Maximal degree in co-relation 10856. Up to 3719 conditions per place. [2025-01-09 16:43:18,050 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 41 selfloop transitions, 3 changer transitions 24/72 dead transitions. [2025-01-09 16:43:18,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 356 flow [2025-01-09 16:43:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:43:18,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:43:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-01-09 16:43:18,052 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2025-01-09 16:43:18,052 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 158 flow. Second operand 4 states and 91 transitions. [2025-01-09 16:43:18,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 356 flow [2025-01-09 16:43:18,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-01-09 16:43:18,055 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 166 flow [2025-01-09 16:43:18,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2025-01-09 16:43:18,056 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2025-01-09 16:43:18,056 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 166 flow [2025-01-09 16:43:18,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:18,057 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:18,057 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:18,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 16:43:18,057 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)] === [2025-01-09 16:43:18,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:18,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1530735210, now seen corresponding path program 1 times [2025-01-09 16:43:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:18,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220548533] [2025-01-09 16:43:18,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:18,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:18,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-09 16:43:18,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 16:43:18,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:18,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:43:18,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:18,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220548533] [2025-01-09 16:43:18,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220548533] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:43:18,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727995731] [2025-01-09 16:43:18,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:18,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:43:18,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:43:18,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:43:18,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 16:43:18,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-09 16:43:18,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 16:43:18,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:18,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:18,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 16:43:18,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:43:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:43:18,394 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:43:18,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727995731] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:18,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:43:18,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-01-09 16:43:18,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299482936] [2025-01-09 16:43:18,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:18,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:43:18,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:18,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:43:18,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:43:18,400 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:18,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2025-01-09 16:43:18,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:18,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:18,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:18,839 INFO L124 PetriNetUnfolderBase]: 5255/7617 cut-off events. [2025-01-09 16:43:18,839 INFO L125 PetriNetUnfolderBase]: For 2335/2335 co-relation queries the response was YES. [2025-01-09 16:43:18,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17552 conditions, 7617 events. 5255/7617 cut-off events. For 2335/2335 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 35215 event pairs, 2749 based on Foata normal form. 156/6709 useless extension candidates. Maximal degree in co-relation 17540. Up to 2981 conditions per place. [2025-01-09 16:43:18,861 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 85 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2025-01-09 16:43:18,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 498 flow [2025-01-09 16:43:18,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:43:18,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:43:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2025-01-09 16:43:18,862 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2025-01-09 16:43:18,862 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 166 flow. Second operand 4 states and 115 transitions. [2025-01-09 16:43:18,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 498 flow [2025-01-09 16:43:18,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 488 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-01-09 16:43:18,864 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 219 flow [2025-01-09 16:43:18,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2025-01-09 16:43:18,865 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2025-01-09 16:43:18,865 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 219 flow [2025-01-09 16:43:18,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2025-01-09 16:43:18,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:18,865 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:18,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 16:43:19,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:43:19,072 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)] === [2025-01-09 16:43:19,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:19,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1046738447, now seen corresponding path program 1 times [2025-01-09 16:43:19,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:19,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864421572] [2025-01-09 16:43:19,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:19,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:19,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-09 16:43:19,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 16:43:19,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:19,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:43:19,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864421572] [2025-01-09 16:43:19,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864421572] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:43:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994192757] [2025-01-09 16:43:19,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:43:19,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:43:19,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:43:19,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 16:43:19,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-09 16:43:19,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 16:43:19,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:19,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:19,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 16:43:19,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:43:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:43:19,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:43:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:43:19,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994192757] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:43:19,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:43:19,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-09 16:43:19,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639843921] [2025-01-09 16:43:19,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:43:19,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 16:43:19,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:19,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 16:43:19,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-01-09 16:43:19,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:19,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 219 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:19,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:19,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:19,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:20,123 INFO L124 PetriNetUnfolderBase]: 6007/8807 cut-off events. [2025-01-09 16:43:20,124 INFO L125 PetriNetUnfolderBase]: For 4183/4183 co-relation queries the response was YES. [2025-01-09 16:43:20,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21969 conditions, 8807 events. 6007/8807 cut-off events. For 4183/4183 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 42975 event pairs, 5125 based on Foata normal form. 2/7536 useless extension candidates. Maximal degree in co-relation 21956. Up to 7601 conditions per place. [2025-01-09 16:43:20,153 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 48 selfloop transitions, 3 changer transitions 43/98 dead transitions. [2025-01-09 16:43:20,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 98 transitions, 539 flow [2025-01-09 16:43:20,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:43:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:43:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2025-01-09 16:43:20,155 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2025-01-09 16:43:20,155 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 219 flow. Second operand 7 states and 130 transitions. [2025-01-09 16:43:20,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 98 transitions, 539 flow [2025-01-09 16:43:20,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 98 transitions, 531 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-01-09 16:43:20,159 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 235 flow [2025-01-09 16:43:20,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2025-01-09 16:43:20,160 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2025-01-09 16:43:20,160 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 235 flow [2025-01-09 16:43:20,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:20,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:20,160 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:20,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 16:43:20,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:43:20,364 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)] === [2025-01-09 16:43:20,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:20,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1816005679, now seen corresponding path program 2 times [2025-01-09 16:43:20,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:20,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004996133] [2025-01-09 16:43:20,365 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:43:20,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:20,389 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-01-09 16:43:20,481 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 41 of 45 statements. [2025-01-09 16:43:20,481 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:43:20,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 16:43:21,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:21,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004996133] [2025-01-09 16:43:21,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004996133] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:21,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:43:21,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-09 16:43:21,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037258980] [2025-01-09 16:43:21,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:21,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 16:43:21,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:21,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 16:43:21,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-01-09 16:43:21,418 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:21,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 235 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:21,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:21,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:21,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:22,080 INFO L124 PetriNetUnfolderBase]: 6147/8903 cut-off events. [2025-01-09 16:43:22,080 INFO L125 PetriNetUnfolderBase]: For 4581/4581 co-relation queries the response was YES. [2025-01-09 16:43:22,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22448 conditions, 8903 events. 6147/8903 cut-off events. For 4581/4581 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 41462 event pairs, 2206 based on Foata normal form. 1/7638 useless extension candidates. Maximal degree in co-relation 22430. Up to 6518 conditions per place. [2025-01-09 16:43:22,104 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 100 selfloop transitions, 15 changer transitions 18/137 dead transitions. [2025-01-09 16:43:22,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 137 transitions, 727 flow [2025-01-09 16:43:22,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 16:43:22,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-09 16:43:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2025-01-09 16:43:22,105 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40208333333333335 [2025-01-09 16:43:22,106 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 235 flow. Second operand 10 states and 193 transitions. [2025-01-09 16:43:22,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 137 transitions, 727 flow [2025-01-09 16:43:22,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 137 transitions, 711 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-01-09 16:43:22,112 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 343 flow [2025-01-09 16:43:22,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=343, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2025-01-09 16:43:22,112 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2025-01-09 16:43:22,112 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 343 flow [2025-01-09 16:43:22,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:22,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:22,113 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:22,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-09 16:43:22,113 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)] === [2025-01-09 16:43:22,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1569557364, now seen corresponding path program 3 times [2025-01-09 16:43:22,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:22,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694728640] [2025-01-09 16:43:22,114 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:43:22,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:22,124 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 2 equivalence classes. [2025-01-09 16:43:22,176 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-01-09 16:43:22,176 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:43:22,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 16:43:22,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:22,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694728640] [2025-01-09 16:43:22,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694728640] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:43:22,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857847980] [2025-01-09 16:43:22,390 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:43:22,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:43:22,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:43:22,395 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:43:22,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 16:43:22,464 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 2 equivalence classes. [2025-01-09 16:43:22,572 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-01-09 16:43:22,572 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:43:22,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:22,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:43:22,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:43:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:43:22,699 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:43:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:43:22,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857847980] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:43:22,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:43:22,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2025-01-09 16:43:22,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061688456] [2025-01-09 16:43:22,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:43:22,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 16:43:22,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:22,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 16:43:22,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:43:22,881 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:22,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 343 flow. Second operand has 17 states, 17 states have (on average 13.058823529411764) internal successors, (222), 17 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:22,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:22,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:22,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:24,195 INFO L124 PetriNetUnfolderBase]: 11303/17028 cut-off events. [2025-01-09 16:43:24,195 INFO L125 PetriNetUnfolderBase]: For 15665/15665 co-relation queries the response was YES. [2025-01-09 16:43:24,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43555 conditions, 17028 events. 11303/17028 cut-off events. For 15665/15665 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 95830 event pairs, 8180 based on Foata normal form. 901/15388 useless extension candidates. Maximal degree in co-relation 43536. Up to 8883 conditions per place. [2025-01-09 16:43:24,246 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 108 selfloop transitions, 12 changer transitions 148/272 dead transitions. [2025-01-09 16:43:24,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 272 transitions, 1752 flow [2025-01-09 16:43:24,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 16:43:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-09 16:43:24,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 342 transitions. [2025-01-09 16:43:24,248 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2025-01-09 16:43:24,248 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 343 flow. Second operand 18 states and 342 transitions. [2025-01-09 16:43:24,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 272 transitions, 1752 flow [2025-01-09 16:43:24,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 272 transitions, 1656 flow, removed 43 selfloop flow, removed 2 redundant places. [2025-01-09 16:43:24,261 INFO L231 Difference]: Finished difference. Result has 101 places, 73 transitions, 448 flow [2025-01-09 16:43:24,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=448, PETRI_PLACES=101, PETRI_TRANSITIONS=73} [2025-01-09 16:43:24,261 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 56 predicate places. [2025-01-09 16:43:24,261 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 73 transitions, 448 flow [2025-01-09 16:43:24,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.058823529411764) internal successors, (222), 17 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:24,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:24,262 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:24,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 16:43:24,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:43:24,464 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)] === [2025-01-09 16:43:24,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash -414941466, now seen corresponding path program 4 times [2025-01-09 16:43:24,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:24,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070738417] [2025-01-09 16:43:24,465 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:43:24,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:24,488 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 50 statements into 2 equivalence classes. [2025-01-09 16:43:24,511 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 16:43:24,516 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:43:24,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:43:24,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:24,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070738417] [2025-01-09 16:43:24,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070738417] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:43:24,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082902358] [2025-01-09 16:43:24,855 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:43:24,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:43:24,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:43:24,858 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:43:24,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 16:43:24,927 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 50 statements into 2 equivalence classes. [2025-01-09 16:43:24,962 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 16:43:24,962 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:43:24,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:24,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:43:24,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:43:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:43:25,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:43:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:43:25,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082902358] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:43:25,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:43:25,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-01-09 16:43:25,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115429597] [2025-01-09 16:43:25,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:43:25,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 16:43:25,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:25,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 16:43:25,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:43:25,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:25,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 73 transitions, 448 flow. Second operand has 18 states, 18 states have (on average 10.944444444444445) internal successors, (197), 18 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:25,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:25,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:25,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:26,204 INFO L124 PetriNetUnfolderBase]: 6905/10113 cut-off events. [2025-01-09 16:43:26,204 INFO L125 PetriNetUnfolderBase]: For 14198/14198 co-relation queries the response was YES. [2025-01-09 16:43:26,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28529 conditions, 10113 events. 6905/10113 cut-off events. For 14198/14198 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 50200 event pairs, 5712 based on Foata normal form. 2/8637 useless extension candidates. Maximal degree in co-relation 28497. Up to 8887 conditions per place. [2025-01-09 16:43:26,276 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 60 selfloop transitions, 4 changer transitions 51/119 dead transitions. [2025-01-09 16:43:26,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 119 transitions, 813 flow [2025-01-09 16:43:26,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:43:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:43:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2025-01-09 16:43:26,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2025-01-09 16:43:26,277 INFO L175 Difference]: Start difference. First operand has 101 places, 73 transitions, 448 flow. Second operand 8 states and 145 transitions. [2025-01-09 16:43:26,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 119 transitions, 813 flow [2025-01-09 16:43:26,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 119 transitions, 759 flow, removed 22 selfloop flow, removed 8 redundant places. [2025-01-09 16:43:26,314 INFO L231 Difference]: Finished difference. Result has 97 places, 68 transitions, 371 flow [2025-01-09 16:43:26,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=371, PETRI_PLACES=97, PETRI_TRANSITIONS=68} [2025-01-09 16:43:26,314 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2025-01-09 16:43:26,314 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 68 transitions, 371 flow [2025-01-09 16:43:26,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.944444444444445) internal successors, (197), 18 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:26,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:26,315 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:26,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 16:43:26,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 16:43:26,519 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:43:26,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:26,520 INFO L85 PathProgramCache]: Analyzing trace with hash 608116424, now seen corresponding path program 5 times [2025-01-09 16:43:26,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:26,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281708395] [2025-01-09 16:43:26,520 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:43:26,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:26,533 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 3 equivalence classes. [2025-01-09 16:43:26,550 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 16:43:26,550 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 16:43:26,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-09 16:43:26,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:26,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281708395] [2025-01-09 16:43:26,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281708395] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:43:26,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066991374] [2025-01-09 16:43:26,686 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:43:26,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:43:26,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:43:26,692 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:43:26,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 16:43:26,767 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 3 equivalence classes. [2025-01-09 16:43:26,807 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 16:43:26,808 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 16:43:26,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:26,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 16:43:26,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:43:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 16:43:26,860 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:43:26,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066991374] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:26,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:43:26,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-01-09 16:43:26,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929311789] [2025-01-09 16:43:26,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:26,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:43:26,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:26,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:43:26,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:43:26,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:26,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 68 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:26,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:26,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:26,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:28,284 INFO L124 PetriNetUnfolderBase]: 14442/20826 cut-off events. [2025-01-09 16:43:28,284 INFO L125 PetriNetUnfolderBase]: For 32772/32772 co-relation queries the response was YES. [2025-01-09 16:43:28,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59784 conditions, 20826 events. 14442/20826 cut-off events. For 32772/32772 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 103671 event pairs, 6150 based on Foata normal form. 375/18300 useless extension candidates. Maximal degree in co-relation 59753. Up to 8331 conditions per place. [2025-01-09 16:43:28,453 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 114 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2025-01-09 16:43:28,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 124 transitions, 882 flow [2025-01-09 16:43:28,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:43:28,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:43:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2025-01-09 16:43:28,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2025-01-09 16:43:28,454 INFO L175 Difference]: Start difference. First operand has 97 places, 68 transitions, 371 flow. Second operand 4 states and 115 transitions. [2025-01-09 16:43:28,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 124 transitions, 882 flow [2025-01-09 16:43:28,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 124 transitions, 814 flow, removed 27 selfloop flow, removed 14 redundant places. [2025-01-09 16:43:28,524 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 348 flow [2025-01-09 16:43:28,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2025-01-09 16:43:28,525 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2025-01-09 16:43:28,525 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 348 flow [2025-01-09 16:43:28,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:28,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:28,525 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:28,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 16:43:28,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-09 16:43:28,726 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:43:28,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1535615782, now seen corresponding path program 6 times [2025-01-09 16:43:28,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:28,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107824006] [2025-01-09 16:43:28,726 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:43:28,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:28,738 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 51 statements into 3 equivalence classes. [2025-01-09 16:43:28,784 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 16:43:28,784 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:43:28,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 16:43:28,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107824006] [2025-01-09 16:43:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107824006] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:28,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:43:28,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:43:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534264745] [2025-01-09 16:43:28,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:28,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:43:28,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:28,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:43:28,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:43:28,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:28,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:28,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:28,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:28,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:29,050 INFO L124 PetriNetUnfolderBase]: 2344/3636 cut-off events. [2025-01-09 16:43:29,050 INFO L125 PetriNetUnfolderBase]: For 2370/2370 co-relation queries the response was YES. [2025-01-09 16:43:29,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8509 conditions, 3636 events. 2344/3636 cut-off events. For 2370/2370 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 15717 event pairs, 2101 based on Foata normal form. 154/3149 useless extension candidates. Maximal degree in co-relation 8485. Up to 3372 conditions per place. [2025-01-09 16:43:29,058 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 58 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2025-01-09 16:43:29,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 67 transitions, 434 flow [2025-01-09 16:43:29,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:43:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:43:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2025-01-09 16:43:29,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2025-01-09 16:43:29,059 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 348 flow. Second operand 4 states and 77 transitions. [2025-01-09 16:43:29,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 67 transitions, 434 flow [2025-01-09 16:43:29,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 67 transitions, 381 flow, removed 4 selfloop flow, removed 8 redundant places. [2025-01-09 16:43:29,063 INFO L231 Difference]: Finished difference. Result has 76 places, 56 transitions, 241 flow [2025-01-09 16:43:29,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=76, PETRI_TRANSITIONS=56} [2025-01-09 16:43:29,063 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2025-01-09 16:43:29,063 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 56 transitions, 241 flow [2025-01-09 16:43:29,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:29,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:29,063 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-01-09 16:43:29,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-09 16:43:29,064 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:43:29,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:29,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2060685669, now seen corresponding path program 7 times [2025-01-09 16:43:29,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:29,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615070812] [2025-01-09 16:43:29,064 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:43:29,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:29,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-01-09 16:43:29,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-01-09 16:43:29,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:29,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:29,286 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:43:29,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:29,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615070812] [2025-01-09 16:43:29,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615070812] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:43:29,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144830894] [2025-01-09 16:43:29,286 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:43:29,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:43:29,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:43:29,289 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:43:29,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 16:43:29,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-01-09 16:43:29,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-01-09 16:43:29,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:29,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:29,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 16:43:29,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:43:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 16:43:29,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:43:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 16:43:29,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144830894] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:43:29,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:43:29,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 17 [2025-01-09 16:43:29,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902823099] [2025-01-09 16:43:29,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:43:29,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 16:43:29,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:29,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 16:43:29,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:43:29,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:29,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 56 transitions, 241 flow. Second operand has 17 states, 17 states have (on average 13.588235294117647) internal successors, (231), 17 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:29,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:29,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:29,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:30,608 INFO L124 PetriNetUnfolderBase]: 6980/10860 cut-off events. [2025-01-09 16:43:30,608 INFO L125 PetriNetUnfolderBase]: For 2701/2701 co-relation queries the response was YES. [2025-01-09 16:43:30,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24421 conditions, 10860 events. 6980/10860 cut-off events. For 2701/2701 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 60213 event pairs, 5887 based on Foata normal form. 22/8985 useless extension candidates. Maximal degree in co-relation 24402. Up to 3613 conditions per place. [2025-01-09 16:43:30,646 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 46 selfloop transitions, 8 changer transitions 203/261 dead transitions. [2025-01-09 16:43:30,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 261 transitions, 1372 flow [2025-01-09 16:43:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 16:43:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-01-09 16:43:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 408 transitions. [2025-01-09 16:43:30,648 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3695652173913043 [2025-01-09 16:43:30,648 INFO L175 Difference]: Start difference. First operand has 76 places, 56 transitions, 241 flow. Second operand 23 states and 408 transitions. [2025-01-09 16:43:30,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 261 transitions, 1372 flow [2025-01-09 16:43:30,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 261 transitions, 1341 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-01-09 16:43:30,658 INFO L231 Difference]: Finished difference. Result has 108 places, 58 transitions, 291 flow [2025-01-09 16:43:30,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=291, PETRI_PLACES=108, PETRI_TRANSITIONS=58} [2025-01-09 16:43:30,659 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2025-01-09 16:43:30,659 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 58 transitions, 291 flow [2025-01-09 16:43:30,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.588235294117647) internal successors, (231), 17 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:30,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:30,659 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:30,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 16:43:30,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-09 16:43:30,860 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:43:30,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:30,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1201495307, now seen corresponding path program 8 times [2025-01-09 16:43:30,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:30,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332367747] [2025-01-09 16:43:30,861 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:43:30,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:30,872 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 63 statements into 2 equivalence classes. [2025-01-09 16:43:30,900 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 63 of 63 statements. [2025-01-09 16:43:30,901 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:43:30,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 16:43:31,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:31,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332367747] [2025-01-09 16:43:31,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332367747] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:43:31,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594452327] [2025-01-09 16:43:31,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:43:31,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:43:31,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:43:31,053 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:43:31,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 16:43:31,134 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 63 statements into 2 equivalence classes. [2025-01-09 16:43:31,261 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 63 of 63 statements. [2025-01-09 16:43:31,262 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:43:31,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:31,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 16:43:31,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:43:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 16:43:31,455 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:43:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 16:43:31,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594452327] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:43:31,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:43:31,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2025-01-09 16:43:31,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807660484] [2025-01-09 16:43:31,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:43:31,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 16:43:31,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:31,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 16:43:31,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2025-01-09 16:43:31,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2025-01-09 16:43:31,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 58 transitions, 291 flow. Second operand has 22 states, 22 states have (on average 13.5) internal successors, (297), 22 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:31,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:31,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2025-01-09 16:43:31,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:32,379 INFO L124 PetriNetUnfolderBase]: 3986/6228 cut-off events. [2025-01-09 16:43:32,380 INFO L125 PetriNetUnfolderBase]: For 2017/2017 co-relation queries the response was YES. [2025-01-09 16:43:32,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14181 conditions, 6228 events. 3986/6228 cut-off events. For 2017/2017 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 30472 event pairs, 2412 based on Foata normal form. 56/5198 useless extension candidates. Maximal degree in co-relation 14149. Up to 2403 conditions per place. [2025-01-09 16:43:32,405 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 53 selfloop transitions, 9 changer transitions 88/154 dead transitions. [2025-01-09 16:43:32,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 154 transitions, 906 flow [2025-01-09 16:43:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 16:43:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-01-09 16:43:32,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 242 transitions. [2025-01-09 16:43:32,406 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3601190476190476 [2025-01-09 16:43:32,406 INFO L175 Difference]: Start difference. First operand has 108 places, 58 transitions, 291 flow. Second operand 14 states and 242 transitions. [2025-01-09 16:43:32,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 154 transitions, 906 flow [2025-01-09 16:43:32,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 154 transitions, 822 flow, removed 34 selfloop flow, removed 18 redundant places. [2025-01-09 16:43:32,421 INFO L231 Difference]: Finished difference. Result has 93 places, 59 transitions, 277 flow [2025-01-09 16:43:32,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=277, PETRI_PLACES=93, PETRI_TRANSITIONS=59} [2025-01-09 16:43:32,422 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2025-01-09 16:43:32,422 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 59 transitions, 277 flow [2025-01-09 16:43:32,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.5) internal successors, (297), 22 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:43:32,422 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:32,422 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:32,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 16:43:32,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:43:32,623 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:43:32,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:32,623 INFO L85 PathProgramCache]: Analyzing trace with hash 388731803, now seen corresponding path program 9 times [2025-01-09 16:43:32,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:32,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134295609] [2025-01-09 16:43:32,624 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:43:32,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:32,637 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 3 equivalence classes. [2025-01-09 16:43:32,774 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 64 of 64 statements. [2025-01-09 16:43:32,774 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 16:43:32,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:43:38,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:38,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134295609] [2025-01-09 16:43:38,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134295609] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:43:38,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619037465] [2025-01-09 16:43:38,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:43:38,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:43:38,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:43:38,091 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:43:38,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 16:43:38,172 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 3 equivalence classes. [2025-01-09 16:43:38,247 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 64 of 64 statements. [2025-01-09 16:43:38,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 16:43:38,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:38,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 107 conjuncts are in the unsatisfiable core [2025-01-09 16:43:38,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:43:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:43:40,932 INFO L312 TraceCheckSpWp]: Computing backward predicates...