./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-figure3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/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-figure3.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())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '0d53ec9655ee282673b712b4a154821b0baa87dd23720a53d10f4e3f8ec015d6'] 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-figure3.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 0d53ec9655ee282673b712b4a154821b0baa87dd23720a53d10f4e3f8ec015d6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:27:48,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:27:48,670 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:27:48,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:27:48,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:27:48,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:27:48,705 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:27:48,706 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:27:48,706 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:27:48,706 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:27:48,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:27:48,707 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:27:48,707 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:27:48,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:27:48,708 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:27:48,708 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:27:48,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:27:48,709 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:27:48,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:27:48,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:27:48,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:27:48,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:27:48,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:27:48,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:27:48,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:27:48,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:27:48,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:27:48,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:27:48,711 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:27:48,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:27:48,711 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 -> 0d53ec9655ee282673b712b4a154821b0baa87dd23720a53d10f4e3f8ec015d6 [2024-11-07 11:27:48,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:27:48,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:27:48,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:27:48,994 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:27:48,995 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:27:48,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2024-11-07 11:27:50,258 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:27:50,471 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:27:50,472 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2024-11-07 11:27:50,477 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/91a9ed659/0582065dd87042549398a3da13724379/FLAG0a8c5de33 [2024-11-07 11:27:50,492 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/91a9ed659/0582065dd87042549398a3da13724379 [2024-11-07 11:27:50,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:27:50,496 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:27:50,499 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:27:50,499 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:27:50,502 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:27:50,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@506add04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50, skipping insertion in model container [2024-11-07 11:27:50,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,520 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:27:50,658 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-figure3.wvr.c[1946,1959] [2024-11-07 11:27:50,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:27:50,672 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:27:50,690 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-figure3.wvr.c[1946,1959] [2024-11-07 11:27:50,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:27:50,707 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:27:50,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50 WrapperNode [2024-11-07 11:27:50,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:27:50,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:27:50,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:27:50,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:27:50,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,726 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,747 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2024-11-07 11:27:50,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:27:50,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:27:50,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:27:50,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:27:50,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,760 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,776 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 11:27:50,778 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,795 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:27:50,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:27:50,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:27:50,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:27:50,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (1/1) ... [2024-11-07 11:27:50,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:27:50,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:50,835 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) [2024-11-07 11:27:50,842 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 [2024-11-07 11:27:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:27:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:27:50,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:27:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:27:50,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:27:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:27:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:27:50,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:27:50,869 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 11:27:50,941 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:27:50,942 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:27:51,060 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:27:51,061 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:27:51,179 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:27:51,180 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 11:27:51,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:27:51 BoogieIcfgContainer [2024-11-07 11:27:51,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:27:51,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:27:51,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:27:51,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:27:51,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:27:50" (1/3) ... [2024-11-07 11:27:51,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f9164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:27:51, skipping insertion in model container [2024-11-07 11:27:51,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:50" (2/3) ... [2024-11-07 11:27:51,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f9164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:27:51, skipping insertion in model container [2024-11-07 11:27:51,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:27:51" (3/3) ... [2024-11-07 11:27:51,190 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2024-11-07 11:27:51,202 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:27:51,203 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:27:51,203 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:27:51,276 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:27:51,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-11-07 11:27:51,345 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-07 11:27:51,347 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:27:51,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-07 11:27:51,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-11-07 11:27:51,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-11-07 11:27:51,366 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:27:51,376 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;@3cfaea3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:27:51,376 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:27:51,384 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:27:51,384 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-07 11:27:51,384 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:27:51,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:51,385 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:51,385 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:27:51,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1255077345, now seen corresponding path program 1 times [2024-11-07 11:27:51,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:51,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674611874] [2024-11-07 11:27:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:51,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:51,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:51,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674611874] [2024-11-07 11:27:51,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674611874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:51,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:51,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:27:51,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703718085] [2024-11-07 11:27:51,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:51,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:27:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:51,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:27:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:27:51,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-07 11:27:51,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:51,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:51,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-07 11:27:51,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:51,949 INFO L124 PetriNetUnfolderBase]: 86/169 cut-off events. [2024-11-07 11:27:51,949 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-07 11:27:51,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 169 events. 86/169 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 499 event pairs, 32 based on Foata normal form. 1/162 useless extension candidates. Maximal degree in co-relation 298. Up to 108 conditions per place. [2024-11-07 11:27:51,953 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 21 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-07 11:27:51,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 129 flow [2024-11-07 11:27:51,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:27:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:27:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-11-07 11:27:51,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-07 11:27:51,972 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 3 states and 40 transitions. [2024-11-07 11:27:51,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 129 flow [2024-11-07 11:27:51,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:27:51,982 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-11-07 11:27:51,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-11-07 11:27:51,992 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2024-11-07 11:27:51,993 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-11-07 11:27:51,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:51,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:51,993 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:51,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:27:51,993 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:27:51,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:51,994 INFO L85 PathProgramCache]: Analyzing trace with hash 930887173, now seen corresponding path program 1 times [2024-11-07 11:27:51,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:51,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760299266] [2024-11-07 11:27:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:51,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:52,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:52,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760299266] [2024-11-07 11:27:52,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760299266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:52,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:52,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:27:52,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519103989] [2024-11-07 11:27:52,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:52,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:27:52,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:52,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:27:52,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:27:52,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:27:52,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:52,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:52,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:27:52,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:52,395 INFO L124 PetriNetUnfolderBase]: 98/200 cut-off events. [2024-11-07 11:27:52,396 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-07 11:27:52,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 200 events. 98/200 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 744 event pairs, 45 based on Foata normal form. 2/184 useless extension candidates. Maximal degree in co-relation 155. Up to 133 conditions per place. [2024-11-07 11:27:52,400 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 28 selfloop transitions, 6 changer transitions 1/39 dead transitions. [2024-11-07 11:27:52,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 39 transitions, 170 flow [2024-11-07 11:27:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:27:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:27:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-11-07 11:27:52,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5545454545454546 [2024-11-07 11:27:52,402 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 61 transitions. [2024-11-07 11:27:52,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 39 transitions, 170 flow [2024-11-07 11:27:52,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 39 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:27:52,404 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 97 flow [2024-11-07 11:27:52,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2024-11-07 11:27:52,405 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2024-11-07 11:27:52,405 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 97 flow [2024-11-07 11:27:52,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:52,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:52,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:52,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:27:52,406 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:27:52,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:52,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1774096965, now seen corresponding path program 2 times [2024-11-07 11:27:52,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:52,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530222980] [2024-11-07 11:27:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:52,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:52,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:52,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530222980] [2024-11-07 11:27:52,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530222980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:52,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:52,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:27:52,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54790097] [2024-11-07 11:27:52,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:52,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:27:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:52,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:27:52,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:27:52,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:27:52,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:52,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:52,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:27:52,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:52,718 INFO L124 PetriNetUnfolderBase]: 109/222 cut-off events. [2024-11-07 11:27:52,718 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-11-07 11:27:52,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 222 events. 109/222 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 836 event pairs, 4 based on Foata normal form. 7/213 useless extension candidates. Maximal degree in co-relation 406. Up to 94 conditions per place. [2024-11-07 11:27:52,720 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 38 selfloop transitions, 8 changer transitions 0/50 dead transitions. [2024-11-07 11:27:52,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 269 flow [2024-11-07 11:27:52,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:27:52,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:27:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-11-07 11:27:52,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2024-11-07 11:27:52,723 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 97 flow. Second operand 7 states and 82 transitions. [2024-11-07 11:27:52,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 269 flow [2024-11-07 11:27:52,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 267 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-07 11:27:52,725 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 131 flow [2024-11-07 11:27:52,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2024-11-07 11:27:52,727 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2024-11-07 11:27:52,727 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 131 flow [2024-11-07 11:27:52,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:52,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:52,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:52,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:27:52,728 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:27:52,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:52,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1332688077, now seen corresponding path program 3 times [2024-11-07 11:27:52,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:52,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905386472] [2024-11-07 11:27:52,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:52,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:52,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:52,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905386472] [2024-11-07 11:27:52,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905386472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:52,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:52,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:27:52,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881527630] [2024-11-07 11:27:52,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:52,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:27:52,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:52,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:27:52,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:27:52,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:27:52,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 131 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:52,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:52,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:27:52,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:52,980 INFO L124 PetriNetUnfolderBase]: 148/303 cut-off events. [2024-11-07 11:27:52,980 INFO L125 PetriNetUnfolderBase]: For 449/451 co-relation queries the response was YES. [2024-11-07 11:27:52,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 303 events. 148/303 cut-off events. For 449/451 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1189 event pairs, 55 based on Foata normal form. 6/286 useless extension candidates. Maximal degree in co-relation 479. Up to 137 conditions per place. [2024-11-07 11:27:52,987 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 34 selfloop transitions, 7 changer transitions 2/47 dead transitions. [2024-11-07 11:27:52,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 308 flow [2024-11-07 11:27:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:27:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:27:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-07 11:27:52,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-07 11:27:52,988 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 131 flow. Second operand 5 states and 60 transitions. [2024-11-07 11:27:52,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 308 flow [2024-11-07 11:27:52,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 286 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-07 11:27:52,996 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 163 flow [2024-11-07 11:27:52,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2024-11-07 11:27:52,997 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 16 predicate places. [2024-11-07 11:27:52,997 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 163 flow [2024-11-07 11:27:52,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:52,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:52,998 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:52,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:27:52,999 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:27:53,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2131557781, now seen corresponding path program 4 times [2024-11-07 11:27:53,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:53,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075308590] [2024-11-07 11:27:53,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:53,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:53,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:53,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075308590] [2024-11-07 11:27:53,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075308590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46527714] [2024-11-07 11:27:53,137 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:27:53,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:53,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:53,140 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) [2024-11-07 11:27:53,143 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 [2024-11-07 11:27:53,212 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:27:53,212 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:53,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:27:53,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:53,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:53,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:53,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:53,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46527714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:53,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:53,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-11-07 11:27:53,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181853237] [2024-11-07 11:27:53,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:53,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:27:53,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:53,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:27:53,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:27:53,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:27:53,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 163 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:53,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:53,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:27:53,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:53,611 INFO L124 PetriNetUnfolderBase]: 233/470 cut-off events. [2024-11-07 11:27:53,612 INFO L125 PetriNetUnfolderBase]: For 952/960 co-relation queries the response was YES. [2024-11-07 11:27:53,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 470 events. 233/470 cut-off events. For 952/960 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2174 event pairs, 33 based on Foata normal form. 17/485 useless extension candidates. Maximal degree in co-relation 894. Up to 161 conditions per place. [2024-11-07 11:27:53,616 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 41 selfloop transitions, 31 changer transitions 2/78 dead transitions. [2024-11-07 11:27:53,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 78 transitions, 566 flow [2024-11-07 11:27:53,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:27:53,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:27:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-11-07 11:27:53,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-11-07 11:27:53,617 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 163 flow. Second operand 10 states and 116 transitions. [2024-11-07 11:27:53,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 78 transitions, 566 flow [2024-11-07 11:27:53,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 78 transitions, 534 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-07 11:27:53,623 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 414 flow [2024-11-07 11:27:53,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=414, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-07 11:27:53,623 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2024-11-07 11:27:53,623 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 414 flow [2024-11-07 11:27:53,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:53,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:53,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:53,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 11:27:53,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:53,828 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:27:53,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:53,828 INFO L85 PathProgramCache]: Analyzing trace with hash -803832281, now seen corresponding path program 5 times [2024-11-07 11:27:53,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:53,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880136349] [2024-11-07 11:27:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:53,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:53,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:53,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880136349] [2024-11-07 11:27:53,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880136349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:53,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:53,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:27:53,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158608337] [2024-11-07 11:27:53,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:53,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:27:53,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:53,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:27:53,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:27:53,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:27:53,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:53,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:53,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:27:53,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:54,051 INFO L124 PetriNetUnfolderBase]: 224/450 cut-off events. [2024-11-07 11:27:54,051 INFO L125 PetriNetUnfolderBase]: For 2196/2196 co-relation queries the response was YES. [2024-11-07 11:27:54,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1955 conditions, 450 events. 224/450 cut-off events. For 2196/2196 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2048 event pairs, 64 based on Foata normal form. 2/449 useless extension candidates. Maximal degree in co-relation 1481. Up to 190 conditions per place. [2024-11-07 11:27:54,056 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 41 selfloop transitions, 17 changer transitions 1/63 dead transitions. [2024-11-07 11:27:54,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 627 flow [2024-11-07 11:27:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:27:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:27:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-07 11:27:54,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-11-07 11:27:54,059 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 414 flow. Second operand 5 states and 58 transitions. [2024-11-07 11:27:54,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 627 flow [2024-11-07 11:27:54,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 597 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-07 11:27:54,071 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 460 flow [2024-11-07 11:27:54,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=460, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-07 11:27:54,073 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2024-11-07 11:27:54,073 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 460 flow [2024-11-07 11:27:54,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:54,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:54,073 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:54,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:27:54,074 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:27:54,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:54,074 INFO L85 PathProgramCache]: Analyzing trace with hash 936086857, now seen corresponding path program 6 times [2024-11-07 11:27:54,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:54,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723616439] [2024-11-07 11:27:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:54,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:54,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:54,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723616439] [2024-11-07 11:27:54,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723616439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:54,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:54,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:27:54,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466790322] [2024-11-07 11:27:54,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:54,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:27:54,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:54,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:27:54,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:27:54,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:27:54,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:54,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:54,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:27:54,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:54,346 INFO L124 PetriNetUnfolderBase]: 219/431 cut-off events. [2024-11-07 11:27:54,346 INFO L125 PetriNetUnfolderBase]: For 2273/2273 co-relation queries the response was YES. [2024-11-07 11:27:54,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 431 events. 219/431 cut-off events. For 2273/2273 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1852 event pairs, 53 based on Foata normal form. 7/435 useless extension candidates. Maximal degree in co-relation 1545. Up to 170 conditions per place. [2024-11-07 11:27:54,352 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 40 selfloop transitions, 22 changer transitions 0/66 dead transitions. [2024-11-07 11:27:54,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 639 flow [2024-11-07 11:27:54,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:27:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:27:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-11-07 11:27:54,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2024-11-07 11:27:54,354 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 460 flow. Second operand 6 states and 67 transitions. [2024-11-07 11:27:54,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 639 flow [2024-11-07 11:27:54,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 593 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-07 11:27:54,361 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 470 flow [2024-11-07 11:27:54,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=470, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-11-07 11:27:54,363 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2024-11-07 11:27:54,363 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 470 flow [2024-11-07 11:27:54,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:54,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:54,364 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:54,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 11:27:54,364 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:27:54,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash 190174668, now seen corresponding path program 1 times [2024-11-07 11:27:54,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:54,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505650234] [2024-11-07 11:27:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:54,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:54,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:54,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505650234] [2024-11-07 11:27:54,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505650234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:54,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719156644] [2024-11-07 11:27:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:54,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:54,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:54,483 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) [2024-11-07 11:27:54,485 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 [2024-11-07 11:27:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:54,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 11:27:54,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:27:54,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:27:54,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719156644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:54,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:54,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2024-11-07 11:27:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043511397] [2024-11-07 11:27:54,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:54,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:27:54,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:54,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:27:54,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:27:54,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-07 11:27:54,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 470 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:54,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:54,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-07 11:27:54,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:54,807 INFO L124 PetriNetUnfolderBase]: 504/933 cut-off events. [2024-11-07 11:27:54,807 INFO L125 PetriNetUnfolderBase]: For 3797/3869 co-relation queries the response was YES. [2024-11-07 11:27:54,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3907 conditions, 933 events. 504/933 cut-off events. For 3797/3869 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4505 event pairs, 91 based on Foata normal form. 11/943 useless extension candidates. Maximal degree in co-relation 2575. Up to 437 conditions per place. [2024-11-07 11:27:54,816 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 78 selfloop transitions, 5 changer transitions 8/98 dead transitions. [2024-11-07 11:27:54,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 98 transitions, 992 flow [2024-11-07 11:27:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:27:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:27:54,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-11-07 11:27:54,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-07 11:27:54,818 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 470 flow. Second operand 4 states and 60 transitions. [2024-11-07 11:27:54,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 98 transitions, 992 flow [2024-11-07 11:27:54,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 98 transitions, 934 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:27:54,830 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 458 flow [2024-11-07 11:27:54,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=458, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-11-07 11:27:54,831 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 36 predicate places. [2024-11-07 11:27:54,833 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 458 flow [2024-11-07 11:27:54,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:54,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:54,833 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:54,851 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 [2024-11-07 11:27:55,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:55,034 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:27:55,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:55,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1469559476, now seen corresponding path program 2 times [2024-11-07 11:27:55,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:55,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420492568] [2024-11-07 11:27:55,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:55,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:55,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:55,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420492568] [2024-11-07 11:27:55,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420492568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:55,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636183563] [2024-11-07 11:27:55,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:27:55,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:55,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:55,198 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) [2024-11-07 11:27:55,200 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 [2024-11-07 11:27:55,255 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:27:55,255 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:55,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:27:55,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:55,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:55,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:55,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636183563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:55,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:55,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 11:27:55,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226375828] [2024-11-07 11:27:55,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:55,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:27:55,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:55,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:27:55,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:27:55,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:27:55,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 458 flow. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:55,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:55,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:27:55,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:56,103 INFO L124 PetriNetUnfolderBase]: 884/1584 cut-off events. [2024-11-07 11:27:56,103 INFO L125 PetriNetUnfolderBase]: For 6507/6529 co-relation queries the response was YES. [2024-11-07 11:27:56,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6978 conditions, 1584 events. 884/1584 cut-off events. For 6507/6529 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7974 event pairs, 60 based on Foata normal form. 36/1614 useless extension candidates. Maximal degree in co-relation 4354. Up to 535 conditions per place. [2024-11-07 11:27:56,124 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 85 selfloop transitions, 85 changer transitions 7/184 dead transitions. [2024-11-07 11:27:56,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 184 transitions, 1766 flow [2024-11-07 11:27:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 11:27:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-07 11:27:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 235 transitions. [2024-11-07 11:27:56,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5086580086580087 [2024-11-07 11:27:56,127 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 458 flow. Second operand 21 states and 235 transitions. [2024-11-07 11:27:56,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 184 transitions, 1766 flow [2024-11-07 11:27:56,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 184 transitions, 1766 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:27:56,142 INFO L231 Difference]: Finished difference. Result has 89 places, 120 transitions, 1253 flow [2024-11-07 11:27:56,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1253, PETRI_PLACES=89, PETRI_TRANSITIONS=120} [2024-11-07 11:27:56,143 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 65 predicate places. [2024-11-07 11:27:56,143 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 120 transitions, 1253 flow [2024-11-07 11:27:56,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:56,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:56,144 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:56,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 11:27:56,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:56,348 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:27:56,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:56,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1603205862, now seen corresponding path program 3 times [2024-11-07 11:27:56,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:56,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910965196] [2024-11-07 11:27:56,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:56,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:56,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:56,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910965196] [2024-11-07 11:27:56,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910965196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:56,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82257036] [2024-11-07 11:27:56,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:27:56,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:56,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:56,553 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) [2024-11-07 11:27:56,554 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 [2024-11-07 11:27:56,613 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-07 11:27:56,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:56,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:27:56,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:56,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:56,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82257036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:56,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:56,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 11:27:56,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856793679] [2024-11-07 11:27:56,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:56,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:27:56,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:56,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:27:56,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:27:56,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:27:56,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 120 transitions, 1253 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:56,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:56,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:27:56,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:57,254 INFO L124 PetriNetUnfolderBase]: 955/1751 cut-off events. [2024-11-07 11:27:57,254 INFO L125 PetriNetUnfolderBase]: For 15550/15592 co-relation queries the response was YES. [2024-11-07 11:27:57,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9486 conditions, 1751 events. 955/1751 cut-off events. For 15550/15592 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9391 event pairs, 138 based on Foata normal form. 48/1793 useless extension candidates. Maximal degree in co-relation 6418. Up to 718 conditions per place. [2024-11-07 11:27:57,276 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 103 selfloop transitions, 72 changer transitions 10/192 dead transitions. [2024-11-07 11:27:57,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 192 transitions, 2326 flow [2024-11-07 11:27:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 11:27:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-07 11:27:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 160 transitions. [2024-11-07 11:27:57,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-07 11:27:57,278 INFO L175 Difference]: Start difference. First operand has 89 places, 120 transitions, 1253 flow. Second operand 15 states and 160 transitions. [2024-11-07 11:27:57,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 192 transitions, 2326 flow [2024-11-07 11:27:57,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 192 transitions, 2133 flow, removed 88 selfloop flow, removed 2 redundant places. [2024-11-07 11:27:57,341 INFO L231 Difference]: Finished difference. Result has 111 places, 144 transitions, 1672 flow [2024-11-07 11:27:57,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1672, PETRI_PLACES=111, PETRI_TRANSITIONS=144} [2024-11-07 11:27:57,342 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2024-11-07 11:27:57,343 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 144 transitions, 1672 flow [2024-11-07 11:27:57,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:57,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:57,344 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:57,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 11:27:57,544 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,SelfDestructingSolverStorable9 [2024-11-07 11:27:57,545 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:27:57,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:57,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1652969234, now seen corresponding path program 4 times [2024-11-07 11:27:57,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:57,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957365322] [2024-11-07 11:27:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:57,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:57,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:57,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957365322] [2024-11-07 11:27:57,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957365322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:57,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878713006] [2024-11-07 11:27:57,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:27:57,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:57,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:57,711 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) [2024-11-07 11:27:57,712 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 [2024-11-07 11:27:57,761 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:27:57,761 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:57,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:27:57,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:57,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:57,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878713006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:57,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:57,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-07 11:27:57,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162629682] [2024-11-07 11:27:57,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:57,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:27:57,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:57,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:27:57,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-07 11:27:57,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:27:57,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 144 transitions, 1672 flow. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:57,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:57,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:27:57,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:58,662 INFO L124 PetriNetUnfolderBase]: 1297/2366 cut-off events. [2024-11-07 11:27:58,662 INFO L125 PetriNetUnfolderBase]: For 21248/21258 co-relation queries the response was YES. [2024-11-07 11:27:58,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13083 conditions, 2366 events. 1297/2366 cut-off events. For 21248/21258 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 13416 event pairs, 45 based on Foata normal form. 54/2406 useless extension candidates. Maximal degree in co-relation 12760. Up to 713 conditions per place. [2024-11-07 11:27:58,690 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 104 selfloop transitions, 227 changer transitions 1/339 dead transitions. [2024-11-07 11:27:58,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 339 transitions, 4320 flow [2024-11-07 11:27:58,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 11:27:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-07 11:27:58,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 228 transitions. [2024-11-07 11:27:58,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47107438016528924 [2024-11-07 11:27:58,693 INFO L175 Difference]: Start difference. First operand has 111 places, 144 transitions, 1672 flow. Second operand 22 states and 228 transitions. [2024-11-07 11:27:58,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 339 transitions, 4320 flow [2024-11-07 11:27:58,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 339 transitions, 4205 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-11-07 11:27:58,765 INFO L231 Difference]: Finished difference. Result has 138 places, 277 transitions, 3970 flow [2024-11-07 11:27:58,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3970, PETRI_PLACES=138, PETRI_TRANSITIONS=277} [2024-11-07 11:27:58,768 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 114 predicate places. [2024-11-07 11:27:58,769 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 277 transitions, 3970 flow [2024-11-07 11:27:58,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:58,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:58,769 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:58,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 11:27:58,973 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,SelfDestructingSolverStorable10 [2024-11-07 11:27:58,974 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:27:58,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:58,974 INFO L85 PathProgramCache]: Analyzing trace with hash 256189760, now seen corresponding path program 5 times [2024-11-07 11:27:58,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:58,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376174846] [2024-11-07 11:27:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:58,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:59,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:59,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376174846] [2024-11-07 11:27:59,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376174846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:59,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843512209] [2024-11-07 11:27:59,126 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:27:59,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:59,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:59,129 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) [2024-11-07 11:27:59,131 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 [2024-11-07 11:27:59,186 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:27:59,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:59,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:27:59,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:59,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:59,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843512209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:59,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:59,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-07 11:27:59,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925115828] [2024-11-07 11:27:59,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:59,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 11:27:59,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:59,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 11:27:59,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-07 11:27:59,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:27:59,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 277 transitions, 3970 flow. Second operand has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:59,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:59,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:27:59,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:00,940 INFO L124 PetriNetUnfolderBase]: 1786/3275 cut-off events. [2024-11-07 11:28:00,940 INFO L125 PetriNetUnfolderBase]: For 38639/38673 co-relation queries the response was YES. [2024-11-07 11:28:00,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21206 conditions, 3275 events. 1786/3275 cut-off events. For 38639/38673 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 20144 event pairs, 58 based on Foata normal form. 134/3389 useless extension candidates. Maximal degree in co-relation 20836. Up to 968 conditions per place. [2024-11-07 11:28:00,986 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 120 selfloop transitions, 388 changer transitions 3/518 dead transitions. [2024-11-07 11:28:00,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 518 transitions, 7966 flow [2024-11-07 11:28:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-07 11:28:00,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-07 11:28:00,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 333 transitions. [2024-11-07 11:28:00,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4451871657754011 [2024-11-07 11:28:00,988 INFO L175 Difference]: Start difference. First operand has 138 places, 277 transitions, 3970 flow. Second operand 34 states and 333 transitions. [2024-11-07 11:28:00,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 518 transitions, 7966 flow [2024-11-07 11:28:01,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 518 transitions, 7109 flow, removed 351 selfloop flow, removed 3 redundant places. [2024-11-07 11:28:01,192 INFO L231 Difference]: Finished difference. Result has 185 places, 432 transitions, 6911 flow [2024-11-07 11:28:01,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3574, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6911, PETRI_PLACES=185, PETRI_TRANSITIONS=432} [2024-11-07 11:28:01,193 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 161 predicate places. [2024-11-07 11:28:01,193 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 432 transitions, 6911 flow [2024-11-07 11:28:01,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:01,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:01,193 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:01,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 11:28:01,394 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,SelfDestructingSolverStorable11 [2024-11-07 11:28:01,395 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:28:01,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:01,395 INFO L85 PathProgramCache]: Analyzing trace with hash -428851868, now seen corresponding path program 6 times [2024-11-07 11:28:01,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:01,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911866924] [2024-11-07 11:28:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:01,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:01,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911866924] [2024-11-07 11:28:01,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911866924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:01,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337976247] [2024-11-07 11:28:01,520 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:28:01,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:01,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:01,523 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) [2024-11-07 11:28:01,527 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 [2024-11-07 11:28:01,573 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-07 11:28:01,573 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:01,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:28:01,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:01,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:01,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337976247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:01,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:01,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-07 11:28:01,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892616350] [2024-11-07 11:28:01,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:01,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 11:28:01,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:01,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 11:28:01,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-07 11:28:01,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:28:01,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 432 transitions, 6911 flow. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:01,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:01,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:28:01,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:03,225 INFO L124 PetriNetUnfolderBase]: 2246/4163 cut-off events. [2024-11-07 11:28:03,226 INFO L125 PetriNetUnfolderBase]: For 60221/60253 co-relation queries the response was YES. [2024-11-07 11:28:03,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29228 conditions, 4163 events. 2246/4163 cut-off events. For 60221/60253 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26964 event pairs, 103 based on Foata normal form. 52/4191 useless extension candidates. Maximal degree in co-relation 28253. Up to 817 conditions per place. [2024-11-07 11:28:03,346 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 143 selfloop transitions, 490 changer transitions 2/642 dead transitions. [2024-11-07 11:28:03,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 642 transitions, 11087 flow [2024-11-07 11:28:03,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-07 11:28:03,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-07 11:28:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 334 transitions. [2024-11-07 11:28:03,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46005509641873277 [2024-11-07 11:28:03,349 INFO L175 Difference]: Start difference. First operand has 185 places, 432 transitions, 6911 flow. Second operand 33 states and 334 transitions. [2024-11-07 11:28:03,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 642 transitions, 11087 flow [2024-11-07 11:28:03,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 642 transitions, 10174 flow, removed 267 selfloop flow, removed 9 redundant places. [2024-11-07 11:28:03,742 INFO L231 Difference]: Finished difference. Result has 216 places, 570 transitions, 9758 flow [2024-11-07 11:28:03,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6207, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=9758, PETRI_PLACES=216, PETRI_TRANSITIONS=570} [2024-11-07 11:28:03,743 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 192 predicate places. [2024-11-07 11:28:03,743 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 570 transitions, 9758 flow [2024-11-07 11:28:03,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:03,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:03,744 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:03,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 11:28:03,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:03,944 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:28:03,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1521188572, now seen corresponding path program 7 times [2024-11-07 11:28:03,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:03,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514146896] [2024-11-07 11:28:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:03,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:04,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:04,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514146896] [2024-11-07 11:28:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514146896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:04,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399902889] [2024-11-07 11:28:04,053 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:28:04,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:04,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:04,056 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) [2024-11-07 11:28:04,058 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 [2024-11-07 11:28:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:04,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:28:04,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:04,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:04,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399902889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:04,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:04,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-07 11:28:04,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416640783] [2024-11-07 11:28:04,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:04,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 11:28:04,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:04,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 11:28:04,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-07 11:28:04,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:28:04,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 570 transitions, 9758 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:04,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:04,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:28:04,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:05,468 INFO L124 PetriNetUnfolderBase]: 2516/4606 cut-off events. [2024-11-07 11:28:05,468 INFO L125 PetriNetUnfolderBase]: For 77323/77337 co-relation queries the response was YES. [2024-11-07 11:28:05,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34619 conditions, 4606 events. 2516/4606 cut-off events. For 77323/77337 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 29533 event pairs, 164 based on Foata normal form. 16/4598 useless extension candidates. Maximal degree in co-relation 34113. Up to 923 conditions per place. [2024-11-07 11:28:05,516 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 187 selfloop transitions, 497 changer transitions 2/693 dead transitions. [2024-11-07 11:28:05,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 693 transitions, 13046 flow [2024-11-07 11:28:05,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 11:28:05,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-07 11:28:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 254 transitions. [2024-11-07 11:28:05,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5019762845849802 [2024-11-07 11:28:05,521 INFO L175 Difference]: Start difference. First operand has 216 places, 570 transitions, 9758 flow. Second operand 23 states and 254 transitions. [2024-11-07 11:28:05,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 693 transitions, 13046 flow [2024-11-07 11:28:06,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 693 transitions, 12836 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-11-07 11:28:06,062 INFO L231 Difference]: Finished difference. Result has 236 places, 632 transitions, 12061 flow [2024-11-07 11:28:06,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=9447, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=12061, PETRI_PLACES=236, PETRI_TRANSITIONS=632} [2024-11-07 11:28:06,063 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2024-11-07 11:28:06,063 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 632 transitions, 12061 flow [2024-11-07 11:28:06,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:06,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:06,064 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:06,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 11:28:06,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:06,269 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:28:06,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:06,269 INFO L85 PathProgramCache]: Analyzing trace with hash 393602174, now seen corresponding path program 8 times [2024-11-07 11:28:06,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:06,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246282373] [2024-11-07 11:28:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:06,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:06,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:06,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246282373] [2024-11-07 11:28:06,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246282373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:06,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198790500] [2024-11-07 11:28:06,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:28:06,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:06,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:06,416 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:28:06,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 11:28:06,463 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:28:06,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:06,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:28:06,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:06,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:06,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:06,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198790500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:06,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:06,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-07 11:28:06,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732718649] [2024-11-07 11:28:06,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:06,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:28:06,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:06,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:28:06,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:28:06,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:28:06,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 632 transitions, 12061 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:06,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:06,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:28:06,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:08,023 INFO L124 PetriNetUnfolderBase]: 3221/5886 cut-off events. [2024-11-07 11:28:08,023 INFO L125 PetriNetUnfolderBase]: For 118532/118582 co-relation queries the response was YES. [2024-11-07 11:28:08,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47307 conditions, 5886 events. 3221/5886 cut-off events. For 118532/118582 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 39374 event pairs, 233 based on Foata normal form. 78/5932 useless extension candidates. Maximal degree in co-relation 46508. Up to 1209 conditions per place. [2024-11-07 11:28:08,092 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 205 selfloop transitions, 664 changer transitions 5/881 dead transitions. [2024-11-07 11:28:08,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 881 transitions, 18275 flow [2024-11-07 11:28:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-07 11:28:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-07 11:28:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 255 transitions. [2024-11-07 11:28:08,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-11-07 11:28:08,094 INFO L175 Difference]: Start difference. First operand has 236 places, 632 transitions, 12061 flow. Second operand 25 states and 255 transitions. [2024-11-07 11:28:08,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 881 transitions, 18275 flow [2024-11-07 11:28:08,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 881 transitions, 17782 flow, removed 118 selfloop flow, removed 5 redundant places. [2024-11-07 11:28:08,940 INFO L231 Difference]: Finished difference. Result has 262 places, 831 transitions, 18098 flow [2024-11-07 11:28:08,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=11672, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=18098, PETRI_PLACES=262, PETRI_TRANSITIONS=831} [2024-11-07 11:28:08,941 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 238 predicate places. [2024-11-07 11:28:08,941 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 831 transitions, 18098 flow [2024-11-07 11:28:08,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:08,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:08,942 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:08,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 11:28:09,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:09,142 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:28:09,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:09,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1850756804, now seen corresponding path program 9 times [2024-11-07 11:28:09,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:09,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552287221] [2024-11-07 11:28:09,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:09,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:09,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:09,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552287221] [2024-11-07 11:28:09,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552287221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:09,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854562219] [2024-11-07 11:28:09,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:28:09,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:09,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:09,294 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:28:09,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 11:28:09,348 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-07 11:28:09,348 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:09,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:28:09,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:09,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:09,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:09,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:09,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854562219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:09,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:09,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 11:28:09,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321795025] [2024-11-07 11:28:09,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:09,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:28:09,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:09,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:28:09,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:28:09,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:28:09,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 831 transitions, 18098 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:09,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:09,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:28:09,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:10,805 INFO L124 PetriNetUnfolderBase]: 3225/5910 cut-off events. [2024-11-07 11:28:10,806 INFO L125 PetriNetUnfolderBase]: For 144289/144307 co-relation queries the response was YES. [2024-11-07 11:28:10,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51900 conditions, 5910 events. 3225/5910 cut-off events. For 144289/144307 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 39744 event pairs, 437 based on Foata normal form. 10/5892 useless extension candidates. Maximal degree in co-relation 51154. Up to 2165 conditions per place. [2024-11-07 11:28:10,864 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 355 selfloop transitions, 491 changer transitions 3/856 dead transitions. [2024-11-07 11:28:10,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 856 transitions, 19972 flow [2024-11-07 11:28:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 11:28:10,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 11:28:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 150 transitions. [2024-11-07 11:28:10,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.487012987012987 [2024-11-07 11:28:10,865 INFO L175 Difference]: Start difference. First operand has 262 places, 831 transitions, 18098 flow. Second operand 14 states and 150 transitions. [2024-11-07 11:28:10,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 856 transitions, 19972 flow [2024-11-07 11:28:11,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 856 transitions, 19238 flow, removed 172 selfloop flow, removed 9 redundant places. [2024-11-07 11:28:11,959 INFO L231 Difference]: Finished difference. Result has 267 places, 831 transitions, 18368 flow [2024-11-07 11:28:11,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=17326, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=488, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=18368, PETRI_PLACES=267, PETRI_TRANSITIONS=831} [2024-11-07 11:28:11,960 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 243 predicate places. [2024-11-07 11:28:11,960 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 831 transitions, 18368 flow [2024-11-07 11:28:11,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:11,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:11,961 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:11,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 11:28:12,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-07 11:28:12,161 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:28:12,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:12,162 INFO L85 PathProgramCache]: Analyzing trace with hash 866689910, now seen corresponding path program 10 times [2024-11-07 11:28:12,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:12,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115127083] [2024-11-07 11:28:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:12,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:12,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:12,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115127083] [2024-11-07 11:28:12,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115127083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:12,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529462603] [2024-11-07 11:28:12,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:28:12,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:12,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:12,278 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:28:12,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-07 11:28:12,329 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:28:12,329 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:12,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:28:12,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:12,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:12,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529462603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:12,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:12,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 11:28:12,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371053474] [2024-11-07 11:28:12,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:12,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:28:12,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:12,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:28:12,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:28:12,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:28:12,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 831 transitions, 18368 flow. Second operand has 15 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:12,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:12,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:28:12,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:14,766 INFO L124 PetriNetUnfolderBase]: 3892/7224 cut-off events. [2024-11-07 11:28:14,766 INFO L125 PetriNetUnfolderBase]: For 172003/172057 co-relation queries the response was YES. [2024-11-07 11:28:14,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63077 conditions, 7224 events. 3892/7224 cut-off events. For 172003/172057 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 50689 event pairs, 317 based on Foata normal form. 123/7311 useless extension candidates. Maximal degree in co-relation 61401. Up to 1371 conditions per place. [2024-11-07 11:28:14,845 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 342 selfloop transitions, 816 changer transitions 0/1165 dead transitions. [2024-11-07 11:28:14,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1165 transitions, 27215 flow [2024-11-07 11:28:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-07 11:28:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-07 11:28:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 431 transitions. [2024-11-07 11:28:14,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45560253699788583 [2024-11-07 11:28:14,847 INFO L175 Difference]: Start difference. First operand has 267 places, 831 transitions, 18368 flow. Second operand 43 states and 431 transitions. [2024-11-07 11:28:14,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 1165 transitions, 27215 flow [2024-11-07 11:28:16,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 1165 transitions, 26325 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-11-07 11:28:16,078 INFO L231 Difference]: Finished difference. Result has 313 places, 1057 transitions, 25948 flow [2024-11-07 11:28:16,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=17609, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=600, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=25948, PETRI_PLACES=313, PETRI_TRANSITIONS=1057} [2024-11-07 11:28:16,079 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 289 predicate places. [2024-11-07 11:28:16,079 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 1057 transitions, 25948 flow [2024-11-07 11:28:16,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:16,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:16,079 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:16,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-07 11:28:16,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-07 11:28:16,280 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:28:16,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:16,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2001842386, now seen corresponding path program 11 times [2024-11-07 11:28:16,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:16,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588557774] [2024-11-07 11:28:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:16,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588557774] [2024-11-07 11:28:16,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588557774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:16,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452238228] [2024-11-07 11:28:16,396 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:28:16,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:16,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:16,398 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:28:16,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-07 11:28:16,457 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 11:28:16,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:16,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:28:16,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:16,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:16,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452238228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:16,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:16,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 11:28:16,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500230992] [2024-11-07 11:28:16,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:16,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:28:16,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:16,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:28:16,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:28:16,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:28:16,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 1057 transitions, 25948 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:16,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:16,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:28:16,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:18,572 INFO L124 PetriNetUnfolderBase]: 3947/7320 cut-off events. [2024-11-07 11:28:18,572 INFO L125 PetriNetUnfolderBase]: For 207000/207020 co-relation queries the response was YES. [2024-11-07 11:28:18,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69641 conditions, 7320 events. 3947/7320 cut-off events. For 207000/207020 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 51460 event pairs, 1060 based on Foata normal form. 10/7285 useless extension candidates. Maximal degree in co-relation 67989. Up to 5152 conditions per place. [2024-11-07 11:28:18,778 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 946 selfloop transitions, 162 changer transitions 7/1122 dead transitions. [2024-11-07 11:28:18,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1122 transitions, 29387 flow [2024-11-07 11:28:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 11:28:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 11:28:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 134 transitions. [2024-11-07 11:28:18,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-11-07 11:28:18,779 INFO L175 Difference]: Start difference. First operand has 313 places, 1057 transitions, 25948 flow. Second operand 14 states and 134 transitions. [2024-11-07 11:28:18,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1122 transitions, 29387 flow [2024-11-07 11:28:20,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1122 transitions, 29080 flow, removed 44 selfloop flow, removed 11 redundant places. [2024-11-07 11:28:20,334 INFO L231 Difference]: Finished difference. Result has 321 places, 1083 transitions, 26830 flow [2024-11-07 11:28:20,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=25644, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1057, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=906, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=26830, PETRI_PLACES=321, PETRI_TRANSITIONS=1083} [2024-11-07 11:28:20,335 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 297 predicate places. [2024-11-07 11:28:20,335 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 1083 transitions, 26830 flow [2024-11-07 11:28:20,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:20,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:20,335 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:20,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-07 11:28:20,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 11:28:20,536 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:28:20,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:20,536 INFO L85 PathProgramCache]: Analyzing trace with hash 368112322, now seen corresponding path program 12 times [2024-11-07 11:28:20,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:20,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525021477] [2024-11-07 11:28:20,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:20,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:20,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:20,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525021477] [2024-11-07 11:28:20,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525021477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:20,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701401813] [2024-11-07 11:28:20,633 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:28:20,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:20,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:20,635 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:28:20,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-07 11:28:20,684 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-07 11:28:20,685 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:20,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:28:20,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:20,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:20,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701401813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:20,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:20,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 11:28:20,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974396176] [2024-11-07 11:28:20,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:20,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:28:20,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:20,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:28:20,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:28:20,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:28:20,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 1083 transitions, 26830 flow. Second operand has 15 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:20,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:20,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:28:20,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:25,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:28:28,046 INFO L124 PetriNetUnfolderBase]: 5097/9477 cut-off events. [2024-11-07 11:28:28,046 INFO L125 PetriNetUnfolderBase]: For 286773/286809 co-relation queries the response was YES. [2024-11-07 11:28:28,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91650 conditions, 9477 events. 5097/9477 cut-off events. For 286773/286809 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 70608 event pairs, 569 based on Foata normal form. 108/9530 useless extension candidates. Maximal degree in co-relation 90447. Up to 2958 conditions per place. [2024-11-07 11:28:28,355 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 822 selfloop transitions, 742 changer transitions 1/1572 dead transitions. [2024-11-07 11:28:28,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 1572 transitions, 41293 flow [2024-11-07 11:28:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-07 11:28:28,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-07 11:28:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 367 transitions. [2024-11-07 11:28:28,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4633838383838384 [2024-11-07 11:28:28,357 INFO L175 Difference]: Start difference. First operand has 321 places, 1083 transitions, 26830 flow. Second operand 36 states and 367 transitions. [2024-11-07 11:28:28,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 1572 transitions, 41293 flow [2024-11-07 11:28:31,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 1572 transitions, 41155 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-11-07 11:28:31,347 INFO L231 Difference]: Finished difference. Result has 364 places, 1381 transitions, 37461 flow [2024-11-07 11:28:31,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=26582, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1077, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=462, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=37461, PETRI_PLACES=364, PETRI_TRANSITIONS=1381} [2024-11-07 11:28:31,349 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 340 predicate places. [2024-11-07 11:28:31,349 INFO L471 AbstractCegarLoop]: Abstraction has has 364 places, 1381 transitions, 37461 flow [2024-11-07 11:28:31,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:31,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:31,349 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:31,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-07 11:28:31,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:31,550 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:28:31,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1202183656, now seen corresponding path program 13 times [2024-11-07 11:28:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:31,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128998584] [2024-11-07 11:28:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:31,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:31,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:31,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128998584] [2024-11-07 11:28:31,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128998584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:31,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668267040] [2024-11-07 11:28:31,640 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:28:31,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:31,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:31,642 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:28:31,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-07 11:28:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:31,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:28:31,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:31,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:31,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668267040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:31,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:31,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 11:28:31,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328012228] [2024-11-07 11:28:31,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:31,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:28:31,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:31,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:28:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:28:31,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:28:31,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 1381 transitions, 37461 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:31,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:31,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:28:31,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:36,356 INFO L124 PetriNetUnfolderBase]: 6403/11829 cut-off events. [2024-11-07 11:28:36,356 INFO L125 PetriNetUnfolderBase]: For 433148/433220 co-relation queries the response was YES. [2024-11-07 11:28:36,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123493 conditions, 11829 events. 6403/11829 cut-off events. For 433148/433220 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 90730 event pairs, 1212 based on Foata normal form. 44/11798 useless extension candidates. Maximal degree in co-relation 122601. Up to 6303 conditions per place. [2024-11-07 11:28:36,668 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 993 selfloop transitions, 815 changer transitions 0/1815 dead transitions. [2024-11-07 11:28:36,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1815 transitions, 52782 flow [2024-11-07 11:28:36,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 11:28:36,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 11:28:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 210 transitions. [2024-11-07 11:28:36,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-07 11:28:36,670 INFO L175 Difference]: Start difference. First operand has 364 places, 1381 transitions, 37461 flow. Second operand 20 states and 210 transitions. [2024-11-07 11:28:36,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1815 transitions, 52782 flow [2024-11-07 11:28:42,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1815 transitions, 52030 flow, removed 312 selfloop flow, removed 5 redundant places. [2024-11-07 11:28:42,185 INFO L231 Difference]: Finished difference. Result has 386 places, 1755 transitions, 50154 flow [2024-11-07 11:28:42,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=36881, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=50154, PETRI_PLACES=386, PETRI_TRANSITIONS=1755} [2024-11-07 11:28:42,188 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 362 predicate places. [2024-11-07 11:28:42,188 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 1755 transitions, 50154 flow [2024-11-07 11:28:42,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:42,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:42,188 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:42,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-07 11:28:42,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:42,389 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:28:42,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:42,390 INFO L85 PathProgramCache]: Analyzing trace with hash -253133310, now seen corresponding path program 14 times [2024-11-07 11:28:42,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:42,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532400800] [2024-11-07 11:28:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:42,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:42,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:42,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532400800] [2024-11-07 11:28:42,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532400800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:42,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816902882] [2024-11-07 11:28:42,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:28:42,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:42,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:42,517 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:28:42,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-07 11:28:42,590 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:28:42,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:42,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:28:42,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:42,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:42,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:42,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816902882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:42,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:42,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-07 11:28:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788004485] [2024-11-07 11:28:42,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:42,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:28:42,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:28:42,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:28:42,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:28:42,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1755 transitions, 50154 flow. Second operand has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:42,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:42,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:28:42,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:47,879 INFO L124 PetriNetUnfolderBase]: 7013/12954 cut-off events. [2024-11-07 11:28:47,880 INFO L125 PetriNetUnfolderBase]: For 512021/512079 co-relation queries the response was YES. [2024-11-07 11:28:47,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140843 conditions, 12954 events. 7013/12954 cut-off events. For 512021/512079 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 100906 event pairs, 763 based on Foata normal form. 43/12920 useless extension candidates. Maximal degree in co-relation 139823. Up to 4296 conditions per place. [2024-11-07 11:28:48,067 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 823 selfloop transitions, 1117 changer transitions 4/1951 dead transitions. [2024-11-07 11:28:48,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1951 transitions, 59088 flow [2024-11-07 11:28:48,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 11:28:48,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 11:28:48,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 204 transitions. [2024-11-07 11:28:48,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-11-07 11:28:48,068 INFO L175 Difference]: Start difference. First operand has 386 places, 1755 transitions, 50154 flow. Second operand 20 states and 204 transitions. [2024-11-07 11:28:48,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1951 transitions, 59088 flow [2024-11-07 11:28:54,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 1951 transitions, 58513 flow, removed 198 selfloop flow, removed 5 redundant places. [2024-11-07 11:28:54,978 INFO L231 Difference]: Finished difference. Result has 408 places, 1907 transitions, 57915 flow [2024-11-07 11:28:54,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=49556, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=970, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=57915, PETRI_PLACES=408, PETRI_TRANSITIONS=1907} [2024-11-07 11:28:54,980 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 384 predicate places. [2024-11-07 11:28:54,981 INFO L471 AbstractCegarLoop]: Abstraction has has 408 places, 1907 transitions, 57915 flow [2024-11-07 11:28:54,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:54,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:54,981 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:54,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-07 11:28:55,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:55,182 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:28:55,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:55,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2018765298, now seen corresponding path program 15 times [2024-11-07 11:28:55,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:55,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138260813] [2024-11-07 11:28:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:55,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:55,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:55,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138260813] [2024-11-07 11:28:55,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138260813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:55,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452881160] [2024-11-07 11:28:55,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:28:55,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:55,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:55,318 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:28:55,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-07 11:28:55,370 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-07 11:28:55,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:55,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:28:55,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:55,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:55,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452881160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:55,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:55,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 11:28:55,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452143705] [2024-11-07 11:28:55,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:55,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:28:55,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:55,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:28:55,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:28:55,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:28:55,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 1907 transitions, 57915 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:28:55,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:55,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:28:55,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:29:01,694 INFO L124 PetriNetUnfolderBase]: 7004/12941 cut-off events. [2024-11-07 11:29:01,695 INFO L125 PetriNetUnfolderBase]: For 581730/581812 co-relation queries the response was YES. [2024-11-07 11:29:01,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148313 conditions, 12941 events. 7004/12941 cut-off events. For 581730/581812 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 100783 event pairs, 1530 based on Foata normal form. 38/12900 useless extension candidates. Maximal degree in co-relation 147213. Up to 7948 conditions per place. [2024-11-07 11:29:01,887 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 1342 selfloop transitions, 579 changer transitions 3/1931 dead transitions. [2024-11-07 11:29:01,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1931 transitions, 62124 flow [2024-11-07 11:29:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:29:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:29:01,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-11-07 11:29:01,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-11-07 11:29:01,888 INFO L175 Difference]: Start difference. First operand has 408 places, 1907 transitions, 57915 flow. Second operand 12 states and 124 transitions. [2024-11-07 11:29:01,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1931 transitions, 62124 flow [2024-11-07 11:29:08,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 1931 transitions, 61719 flow, removed 125 selfloop flow, removed 7 redundant places. [2024-11-07 11:29:08,996 INFO L231 Difference]: Finished difference. Result has 414 places, 1908 transitions, 58716 flow [2024-11-07 11:29:08,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=57457, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1905, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=575, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=58716, PETRI_PLACES=414, PETRI_TRANSITIONS=1908} [2024-11-07 11:29:08,998 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 390 predicate places. [2024-11-07 11:29:08,998 INFO L471 AbstractCegarLoop]: Abstraction has has 414 places, 1908 transitions, 58716 flow [2024-11-07 11:29:08,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:29:08,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:29:08,999 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:29:09,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-07 11:29:09,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:29:09,199 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:29:09,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:29:09,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1880074598, now seen corresponding path program 16 times [2024-11-07 11:29:09,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:29:09,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110127937] [2024-11-07 11:29:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:29:09,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:29:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:29:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:29:09,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:29:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110127937] [2024-11-07 11:29:09,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110127937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:29:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231150632] [2024-11-07 11:29:09,303 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:29:09,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:29:09,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:29:09,305 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:29:09,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-07 11:29:09,353 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:29:09,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:29:09,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:29:09,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:29:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:29:09,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:29:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:29:09,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231150632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:29:09,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:29:09,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-07 11:29:09,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306237632] [2024-11-07 11:29:09,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:29:09,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:29:09,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:29:09,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:29:09,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:29:09,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-07 11:29:09,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 1908 transitions, 58716 flow. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:29:09,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:29:09,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-07 11:29:09,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:29:14,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []