./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-figure1-alt.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-figure1-alt.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', 'e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c'] 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-figure1-alt.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 e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:27:29,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:27:30,054 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:27:30,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:27:30,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:27:30,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:27:30,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:27:30,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:27:30,088 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:27:30,088 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:27:30,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:27:30,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:27:30,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:27:30,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:27:30,089 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:27:30,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:27:30,089 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:27:30,089 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:27:30,089 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:27:30,089 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:27:30,089 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:27:30,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:27:30,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:27:30,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:27:30,090 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:27:30,090 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:27:30,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:27:30,090 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:27:30,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:27:30,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:27:30,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:27:30,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:27:30,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:27:30,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:27:30,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:27:30,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:27:30,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:27:30,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:27:30,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:27:30,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:27:30,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:27:30,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:27:30,092 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 -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2024-11-07 11:27:30,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:27:30,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:27:30,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:27:30,440 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:27:30,440 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:27:30,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-07 11:27:31,859 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:27:32,082 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:27:32,083 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-07 11:27:32,089 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5c554d8a9/414857d5be5f4761b980be7ec463222b/FLAG5ddeebec8 [2024-11-07 11:27:32,105 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5c554d8a9/414857d5be5f4761b980be7ec463222b [2024-11-07 11:27:32,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:27:32,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:27:32,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:27:32,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:27:32,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:27:32,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3751e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32, skipping insertion in model container [2024-11-07 11:27:32,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,134 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:27:32,288 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-figure1-alt.wvr.c[1921,1934] [2024-11-07 11:27:32,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:27:32,301 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:27:32,321 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-figure1-alt.wvr.c[1921,1934] [2024-11-07 11:27:32,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:27:32,337 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:27:32,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32 WrapperNode [2024-11-07 11:27:32,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:27:32,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:27:32,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:27:32,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:27:32,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,365 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-11-07 11:27:32,366 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:27:32,366 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:27:32,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:27:32,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:27:32,375 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,377 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,387 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 11:27:32,387 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,391 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,395 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:27:32,398 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:27:32,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:27:32,398 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:27:32,399 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (1/1) ... [2024-11-07 11:27:32,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:27:32,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:32,424 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 11:27:32,426 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 11:27:32,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:27:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:27:32,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:27:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:27:32,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:27:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:27:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:27:32,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:27:32,447 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 11:27:32,513 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:27:32,514 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:27:32,640 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:27:32,640 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:27:32,747 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:27:32,748 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 11:27:32,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:27:32 BoogieIcfgContainer [2024-11-07 11:27:32,748 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:27:32,750 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:27:32,751 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:27:32,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:27:32,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:27:32" (1/3) ... [2024-11-07 11:27:32,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfc24d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:27:32, skipping insertion in model container [2024-11-07 11:27:32,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:27:32" (2/3) ... [2024-11-07 11:27:32,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfc24d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:27:32, skipping insertion in model container [2024-11-07 11:27:32,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:27:32" (3/3) ... [2024-11-07 11:27:32,757 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-11-07 11:27:32,769 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:27:32,770 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:27:32,770 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:27:32,828 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:27:32,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-11-07 11:27:32,883 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-07 11:27:32,888 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:27:32,890 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 11:27:32,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-11-07 11:27:32,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-11-07 11:27:32,902 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:27:32,911 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;@189d53b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:27:32,911 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:27:32,918 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:27:32,918 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-07 11:27:32,919 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:27:32,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:32,920 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:32,920 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 11:27:32,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:32,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1336823408, now seen corresponding path program 1 times [2024-11-07 11:27:32,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:32,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875353470] [2024-11-07 11:27:32,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:32,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:33,512 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 11:27:33,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:33,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875353470] [2024-11-07 11:27:33,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875353470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:33,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:33,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:27:33,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160746536] [2024-11-07 11:27:33,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:33,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:27:33,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:33,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:27:33,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:27:33,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-07 11:27:33,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:33,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:33,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-07 11:27:33,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:33,784 INFO L124 PetriNetUnfolderBase]: 87/185 cut-off events. [2024-11-07 11:27:33,784 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-07 11:27:33,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 185 events. 87/185 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 637 event pairs, 12 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 312. Up to 108 conditions per place. [2024-11-07 11:27:33,788 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 30 selfloop transitions, 4 changer transitions 9/45 dead transitions. [2024-11-07 11:27:33,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 45 transitions, 212 flow [2024-11-07 11:27:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:27:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:27:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-11-07 11:27:33,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4935064935064935 [2024-11-07 11:27:33,803 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 7 states and 76 transitions. [2024-11-07 11:27:33,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 45 transitions, 212 flow [2024-11-07 11:27:33,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:27:33,815 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 78 flow [2024-11-07 11:27:33,817 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2024-11-07 11:27:33,823 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2024-11-07 11:27:33,825 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 78 flow [2024-11-07 11:27:33,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:33,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:33,826 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:33,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:27:33,827 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 11:27:33,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:33,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1298187688, now seen corresponding path program 2 times [2024-11-07 11:27:33,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:33,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708725348] [2024-11-07 11:27:33,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:33,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:34,141 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 11:27:34,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:34,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708725348] [2024-11-07 11:27:34,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708725348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:34,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:34,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:27:34,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243645484] [2024-11-07 11:27:34,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:34,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:27:34,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:34,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:27:34,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:27:34,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-07 11:27:34,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:34,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:34,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-07 11:27:34,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:34,364 INFO L124 PetriNetUnfolderBase]: 85/178 cut-off events. [2024-11-07 11:27:34,364 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-07 11:27:34,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 178 events. 85/178 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 592 event pairs, 16 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 477. Up to 110 conditions per place. [2024-11-07 11:27:34,368 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 29 selfloop transitions, 8 changer transitions 6/45 dead transitions. [2024-11-07 11:27:34,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 254 flow [2024-11-07 11:27:34,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:27:34,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:27:34,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-11-07 11:27:34,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-11-07 11:27:34,370 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 78 flow. Second operand 7 states and 72 transitions. [2024-11-07 11:27:34,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 254 flow [2024-11-07 11:27:34,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 45 transitions, 235 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-07 11:27:34,374 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 128 flow [2024-11-07 11:27:34,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-11-07 11:27:34,375 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2024-11-07 11:27:34,376 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 128 flow [2024-11-07 11:27:34,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:34,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:34,376 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:34,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:27:34,377 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 11:27:34,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:34,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1660513398, now seen corresponding path program 3 times [2024-11-07 11:27:34,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:34,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906486414] [2024-11-07 11:27:34,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:34,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:34,626 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 11:27:34,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:34,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906486414] [2024-11-07 11:27:34,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906486414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:34,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:34,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:27:34,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834462608] [2024-11-07 11:27:34,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:34,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:27:34,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:34,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:27:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:27:34,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-07 11:27:34,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 128 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:34,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:34,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-07 11:27:34,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:34,812 INFO L124 PetriNetUnfolderBase]: 90/192 cut-off events. [2024-11-07 11:27:34,812 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-11-07 11:27:34,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 192 events. 90/192 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 675 event pairs, 18 based on Foata normal form. 1/193 useless extension candidates. Maximal degree in co-relation 562. Up to 112 conditions per place. [2024-11-07 11:27:34,814 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 28 selfloop transitions, 11 changer transitions 7/48 dead transitions. [2024-11-07 11:27:34,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 300 flow [2024-11-07 11:27:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:27:34,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:27:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-11-07 11:27:34,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-11-07 11:27:34,819 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 128 flow. Second operand 7 states and 71 transitions. [2024-11-07 11:27:34,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 300 flow [2024-11-07 11:27:34,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 290 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-07 11:27:34,823 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 183 flow [2024-11-07 11:27:34,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-11-07 11:27:34,825 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2024-11-07 11:27:34,825 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 183 flow [2024-11-07 11:27:34,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:34,825 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:34,825 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:34,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:27:34,826 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 11:27:34,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:34,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1141097044, now seen corresponding path program 4 times [2024-11-07 11:27:34,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:34,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001434245] [2024-11-07 11:27:34,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:34,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:35,082 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 11:27:35,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:35,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001434245] [2024-11-07 11:27:35,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001434245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:35,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:35,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:27:35,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406765133] [2024-11-07 11:27:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:35,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:27:35,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:27:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:27:35,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-07 11:27:35,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:35,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:35,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-07 11:27:35,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:35,250 INFO L124 PetriNetUnfolderBase]: 86/179 cut-off events. [2024-11-07 11:27:35,250 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-11-07 11:27:35,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 179 events. 86/179 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 593 event pairs, 30 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 591. Up to 112 conditions per place. [2024-11-07 11:27:35,253 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 26 selfloop transitions, 12 changer transitions 7/47 dead transitions. [2024-11-07 11:27:35,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 348 flow [2024-11-07 11:27:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:27:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:27:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-11-07 11:27:35,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-11-07 11:27:35,254 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 183 flow. Second operand 7 states and 69 transitions. [2024-11-07 11:27:35,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 348 flow [2024-11-07 11:27:35,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 314 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-07 11:27:35,257 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 214 flow [2024-11-07 11:27:35,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2024-11-07 11:27:35,258 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2024-11-07 11:27:35,258 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 214 flow [2024-11-07 11:27:35,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:35,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:35,259 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:35,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:27:35,259 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 11:27:35,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1528241358, now seen corresponding path program 5 times [2024-11-07 11:27:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:35,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282095562] [2024-11-07 11:27:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:35,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:35,498 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 11:27:35,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:35,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282095562] [2024-11-07 11:27:35,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282095562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:35,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:35,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:27:35,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383316104] [2024-11-07 11:27:35,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:35,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:27:35,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:35,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:27:35,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:27:35,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-07 11:27:35,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:35,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:35,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-07 11:27:35,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:35,626 INFO L124 PetriNetUnfolderBase]: 85/179 cut-off events. [2024-11-07 11:27:35,626 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2024-11-07 11:27:35,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 179 events. 85/179 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 600 event pairs, 26 based on Foata normal form. 1/180 useless extension candidates. Maximal degree in co-relation 599. Up to 114 conditions per place. [2024-11-07 11:27:35,628 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 29 selfloop transitions, 13 changer transitions 4/48 dead transitions. [2024-11-07 11:27:35,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 362 flow [2024-11-07 11:27:35,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:27:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:27:35,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-11-07 11:27:35,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-07 11:27:35,630 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 214 flow. Second operand 7 states and 70 transitions. [2024-11-07 11:27:35,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 362 flow [2024-11-07 11:27:35,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 328 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-07 11:27:35,634 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 219 flow [2024-11-07 11:27:35,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2024-11-07 11:27:35,638 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2024-11-07 11:27:35,638 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 219 flow [2024-11-07 11:27:35,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:35,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:35,638 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:35,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:27:35,638 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 11:27:35,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:35,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1279625194, now seen corresponding path program 6 times [2024-11-07 11:27:35,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:35,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173366288] [2024-11-07 11:27:35,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:35,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:35,856 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 11:27:35,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:35,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173366288] [2024-11-07 11:27:35,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173366288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:35,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:35,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:27:35,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636918980] [2024-11-07 11:27:35,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:35,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:27:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:27:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:27:35,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-07 11:27:35,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 219 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:35,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:35,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-07 11:27:35,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:35,973 INFO L124 PetriNetUnfolderBase]: 84/170 cut-off events. [2024-11-07 11:27:35,974 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-11-07 11:27:35,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 170 events. 84/170 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 538 event pairs, 29 based on Foata normal form. 1/170 useless extension candidates. Maximal degree in co-relation 574. Up to 114 conditions per place. [2024-11-07 11:27:35,976 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 23 selfloop transitions, 13 changer transitions 6/44 dead transitions. [2024-11-07 11:27:35,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 340 flow [2024-11-07 11:27:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:27:35,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:27:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-11-07 11:27:35,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-07 11:27:35,978 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 219 flow. Second operand 7 states and 66 transitions. [2024-11-07 11:27:35,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 340 flow [2024-11-07 11:27:35,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 310 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-07 11:27:35,984 INFO L231 Difference]: Finished difference. Result has 47 places, 32 transitions, 208 flow [2024-11-07 11:27:35,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2024-11-07 11:27:35,985 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2024-11-07 11:27:35,985 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 208 flow [2024-11-07 11:27:35,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:35,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:35,986 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:35,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:27:35,986 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 11:27:35,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:35,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1931118330, now seen corresponding path program 1 times [2024-11-07 11:27:35,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:35,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215079953] [2024-11-07 11:27:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:35,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:36,218 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 11:27:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215079953] [2024-11-07 11:27:36,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215079953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418394312] [2024-11-07 11:27:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:36,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:36,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:36,222 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 11:27:36,224 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 11:27:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:36,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:36,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:36,537 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 11:27:36,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:36,737 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 11:27:36,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418394312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:36,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:36,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-07 11:27:36,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437671389] [2024-11-07 11:27:36,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:36,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:27:36,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:36,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:27:36,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:27:36,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:27:36,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 208 flow. Second operand has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 24 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 11:27:36,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:36,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:27:36,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:37,979 INFO L124 PetriNetUnfolderBase]: 318/613 cut-off events. [2024-11-07 11:27:37,980 INFO L125 PetriNetUnfolderBase]: For 457/457 co-relation queries the response was YES. [2024-11-07 11:27:37,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 613 events. 318/613 cut-off events. For 457/457 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2654 event pairs, 14 based on Foata normal form. 17/630 useless extension candidates. Maximal degree in co-relation 1648. Up to 144 conditions per place. [2024-11-07 11:27:37,986 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 125 selfloop transitions, 63 changer transitions 8/197 dead transitions. [2024-11-07 11:27:37,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 197 transitions, 1132 flow [2024-11-07 11:27:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-07 11:27:37,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-07 11:27:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 294 transitions. [2024-11-07 11:27:37,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2024-11-07 11:27:37,991 INFO L175 Difference]: Start difference. First operand has 47 places, 32 transitions, 208 flow. Second operand 34 states and 294 transitions. [2024-11-07 11:27:37,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 197 transitions, 1132 flow [2024-11-07 11:27:37,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 197 transitions, 1065 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-11-07 11:27:37,999 INFO L231 Difference]: Finished difference. Result has 77 places, 89 transitions, 540 flow [2024-11-07 11:27:37,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=540, PETRI_PLACES=77, PETRI_TRANSITIONS=89} [2024-11-07 11:27:37,999 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 53 predicate places. [2024-11-07 11:27:37,999 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 89 transitions, 540 flow [2024-11-07 11:27:38,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 24 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 11:27:38,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:38,000 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:38,017 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 11:27:38,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:38,201 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 11:27:38,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:38,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1032572934, now seen corresponding path program 2 times [2024-11-07 11:27:38,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:38,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803676130] [2024-11-07 11:27:38,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:38,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:38,455 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 11:27:38,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:38,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803676130] [2024-11-07 11:27:38,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803676130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:38,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295833540] [2024-11-07 11:27:38,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:27:38,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:38,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:38,459 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 11:27:38,461 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 11:27:38,512 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:27:38,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:38,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:38,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:38,715 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 11:27:38,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:38,898 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 11:27:38,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295833540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:38,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:38,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-07 11:27:38,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532446883] [2024-11-07 11:27:38,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:38,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:27:38,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:38,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:27:38,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:27:38,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:27:38,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 89 transitions, 540 flow. Second operand has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 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 11:27:38,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:38,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:27:38,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:39,857 INFO L124 PetriNetUnfolderBase]: 408/781 cut-off events. [2024-11-07 11:27:39,857 INFO L125 PetriNetUnfolderBase]: For 918/918 co-relation queries the response was YES. [2024-11-07 11:27:39,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2680 conditions, 781 events. 408/781 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3659 event pairs, 31 based on Foata normal form. 2/783 useless extension candidates. Maximal degree in co-relation 2620. Up to 374 conditions per place. [2024-11-07 11:27:39,864 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 110 selfloop transitions, 93 changer transitions 8/212 dead transitions. [2024-11-07 11:27:39,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 212 transitions, 1497 flow [2024-11-07 11:27:39,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-07 11:27:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-07 11:27:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 254 transitions. [2024-11-07 11:27:39,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-11-07 11:27:39,867 INFO L175 Difference]: Start difference. First operand has 77 places, 89 transitions, 540 flow. Second operand 31 states and 254 transitions. [2024-11-07 11:27:39,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 212 transitions, 1497 flow [2024-11-07 11:27:39,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 212 transitions, 1358 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-11-07 11:27:39,881 INFO L231 Difference]: Finished difference. Result has 111 places, 132 transitions, 956 flow [2024-11-07 11:27:39,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=956, PETRI_PLACES=111, PETRI_TRANSITIONS=132} [2024-11-07 11:27:39,882 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2024-11-07 11:27:39,882 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 132 transitions, 956 flow [2024-11-07 11:27:39,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 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 11:27:39,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:39,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:39,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 11:27:40,083 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 11:27:40,084 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 11:27:40,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1895609986, now seen corresponding path program 3 times [2024-11-07 11:27:40,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:40,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847432458] [2024-11-07 11:27:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:40,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:40,315 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 11:27:40,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847432458] [2024-11-07 11:27:40,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847432458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:40,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070502426] [2024-11-07 11:27:40,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:27:40,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:40,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:40,318 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 11:27:40,320 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 11:27:40,368 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:27:40,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:40,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:40,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:40,553 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 11:27:40,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:40,730 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 11:27:40,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070502426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:40,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:40,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-07 11:27:40,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212691755] [2024-11-07 11:27:40,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:40,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:27:40,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:40,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:27:40,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:27:40,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:27:40,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 132 transitions, 956 flow. Second operand has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 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 11:27:40,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:40,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:27:40,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:42,629 INFO L124 PetriNetUnfolderBase]: 623/1198 cut-off events. [2024-11-07 11:27:42,630 INFO L125 PetriNetUnfolderBase]: For 2685/2685 co-relation queries the response was YES. [2024-11-07 11:27:42,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4775 conditions, 1198 events. 623/1198 cut-off events. For 2685/2685 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6380 event pairs, 20 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 4739. Up to 215 conditions per place. [2024-11-07 11:27:42,643 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 170 selfloop transitions, 197 changer transitions 8/376 dead transitions. [2024-11-07 11:27:42,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 376 transitions, 3021 flow [2024-11-07 11:27:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-07 11:27:42,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-11-07 11:27:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 475 transitions. [2024-11-07 11:27:42,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486 [2024-11-07 11:27:42,647 INFO L175 Difference]: Start difference. First operand has 111 places, 132 transitions, 956 flow. Second operand 60 states and 475 transitions. [2024-11-07 11:27:42,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 376 transitions, 3021 flow [2024-11-07 11:27:42,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 376 transitions, 2927 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-11-07 11:27:42,670 INFO L231 Difference]: Finished difference. Result has 176 places, 230 transitions, 2170 flow [2024-11-07 11:27:42,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=2170, PETRI_PLACES=176, PETRI_TRANSITIONS=230} [2024-11-07 11:27:42,671 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 152 predicate places. [2024-11-07 11:27:42,671 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 230 transitions, 2170 flow [2024-11-07 11:27:42,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 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 11:27:42,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:42,672 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:42,695 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 11:27:42,878 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 11:27:42,879 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 11:27:42,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:42,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1763337946, now seen corresponding path program 4 times [2024-11-07 11:27:42,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:42,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387715085] [2024-11-07 11:27:42,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:42,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:43,107 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 11:27:43,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:43,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387715085] [2024-11-07 11:27:43,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387715085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:43,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460900382] [2024-11-07 11:27:43,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:27:43,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:43,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:43,111 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 11:27:43,112 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 11:27:43,155 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:27:43,155 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:43,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:43,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:43,331 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 11:27:43,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:43,478 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 11:27:43,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460900382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:43,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:43,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-07 11:27:43,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160546649] [2024-11-07 11:27:43,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:43,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:27:43,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:43,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:27:43,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:27:43,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:27:43,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 230 transitions, 2170 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 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 11:27:43,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:43,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:27:43,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:45,426 INFO L124 PetriNetUnfolderBase]: 860/1618 cut-off events. [2024-11-07 11:27:45,426 INFO L125 PetriNetUnfolderBase]: For 13613/13613 co-relation queries the response was YES. [2024-11-07 11:27:45,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8907 conditions, 1618 events. 860/1618 cut-off events. For 13613/13613 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8958 event pairs, 23 based on Foata normal form. 2/1616 useless extension candidates. Maximal degree in co-relation 8597. Up to 309 conditions per place. [2024-11-07 11:27:45,475 INFO L140 encePairwiseOnDemand]: 9/22 looper letters, 178 selfloop transitions, 276 changer transitions 8/463 dead transitions. [2024-11-07 11:27:45,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 463 transitions, 4928 flow [2024-11-07 11:27:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-07 11:27:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-07 11:27:45,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 467 transitions. [2024-11-07 11:27:45,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.372408293460925 [2024-11-07 11:27:45,479 INFO L175 Difference]: Start difference. First operand has 176 places, 230 transitions, 2170 flow. Second operand 57 states and 467 transitions. [2024-11-07 11:27:45,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 463 transitions, 4928 flow [2024-11-07 11:27:45,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 463 transitions, 4616 flow, removed 91 selfloop flow, removed 8 redundant places. [2024-11-07 11:27:45,545 INFO L231 Difference]: Finished difference. Result has 231 places, 319 transitions, 3434 flow [2024-11-07 11:27:45,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=3434, PETRI_PLACES=231, PETRI_TRANSITIONS=319} [2024-11-07 11:27:45,547 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 207 predicate places. [2024-11-07 11:27:45,547 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 319 transitions, 3434 flow [2024-11-07 11:27:45,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 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 11:27:45,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:45,547 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:45,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 11:27:45,747 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 11:27:45,748 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 11:27:45,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:45,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1648237250, now seen corresponding path program 5 times [2024-11-07 11:27:45,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:45,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17732419] [2024-11-07 11:27:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:45,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:45,912 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 11:27:45,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:45,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17732419] [2024-11-07 11:27:45,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17732419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:45,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901230896] [2024-11-07 11:27:45,913 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:27:45,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:45,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:45,915 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 11:27:45,916 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 11:27:45,964 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:27:45,964 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:45,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:45,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:46,162 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 11:27:46,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:46,313 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 11:27:46,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901230896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:46,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:46,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-07 11:27:46,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371694017] [2024-11-07 11:27:46,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:46,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:27:46,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:46,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:27:46,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:27:46,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:27:46,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 319 transitions, 3434 flow. Second operand has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 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 11:27:46,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:46,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:27:46,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:46,715 INFO L124 PetriNetUnfolderBase]: 867/1639 cut-off events. [2024-11-07 11:27:46,715 INFO L125 PetriNetUnfolderBase]: For 17195/17195 co-relation queries the response was YES. [2024-11-07 11:27:46,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10139 conditions, 1639 events. 867/1639 cut-off events. For 17195/17195 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9195 event pairs, 72 based on Foata normal form. 2/1637 useless extension candidates. Maximal degree in co-relation 9814. Up to 1090 conditions per place. [2024-11-07 11:27:46,732 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 166 selfloop transitions, 188 changer transitions 8/363 dead transitions. [2024-11-07 11:27:46,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 363 transitions, 4471 flow [2024-11-07 11:27:46,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 11:27:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-07 11:27:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 128 transitions. [2024-11-07 11:27:46,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-07 11:27:46,734 INFO L175 Difference]: Start difference. First operand has 231 places, 319 transitions, 3434 flow. Second operand 16 states and 128 transitions. [2024-11-07 11:27:46,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 363 transitions, 4471 flow [2024-11-07 11:27:46,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 363 transitions, 4135 flow, removed 68 selfloop flow, removed 25 redundant places. [2024-11-07 11:27:46,794 INFO L231 Difference]: Finished difference. Result has 225 places, 327 transitions, 3871 flow [2024-11-07 11:27:46,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3871, PETRI_PLACES=225, PETRI_TRANSITIONS=327} [2024-11-07 11:27:46,795 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 201 predicate places. [2024-11-07 11:27:46,795 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 327 transitions, 3871 flow [2024-11-07 11:27:46,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 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 11:27:46,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:46,795 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:46,813 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 11:27:46,996 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 11:27:46,996 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 11:27:46,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:46,997 INFO L85 PathProgramCache]: Analyzing trace with hash -497933510, now seen corresponding path program 6 times [2024-11-07 11:27:46,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:46,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509193464] [2024-11-07 11:27:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:46,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:47,157 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 11:27:47,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:47,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509193464] [2024-11-07 11:27:47,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509193464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:47,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193610833] [2024-11-07 11:27:47,157 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:27:47,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:47,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:47,160 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 11:27:47,162 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 11:27:47,212 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-07 11:27:47,212 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:47,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:47,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:47,398 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 11:27:47,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:47,546 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 11:27:47,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193610833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:47,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:47,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-07 11:27:47,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534422787] [2024-11-07 11:27:47,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:47,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 11:27:47,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:47,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 11:27:47,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:27:47,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:27:47,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 327 transitions, 3871 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:47,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:47,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:27:47,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:48,269 INFO L124 PetriNetUnfolderBase]: 882/1672 cut-off events. [2024-11-07 11:27:48,269 INFO L125 PetriNetUnfolderBase]: For 13666/13666 co-relation queries the response was YES. [2024-11-07 11:27:48,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10477 conditions, 1672 events. 882/1672 cut-off events. For 13666/13666 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9396 event pairs, 93 based on Foata normal form. 2/1674 useless extension candidates. Maximal degree in co-relation 10416. Up to 1141 conditions per place. [2024-11-07 11:27:48,289 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 174 selfloop transitions, 195 changer transitions 8/378 dead transitions. [2024-11-07 11:27:48,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 378 transitions, 4956 flow [2024-11-07 11:27:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 11:27:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 11:27:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 151 transitions. [2024-11-07 11:27:48,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3431818181818182 [2024-11-07 11:27:48,291 INFO L175 Difference]: Start difference. First operand has 225 places, 327 transitions, 3871 flow. Second operand 20 states and 151 transitions. [2024-11-07 11:27:48,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 378 transitions, 4956 flow [2024-11-07 11:27:48,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 378 transitions, 4832 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-07 11:27:48,372 INFO L231 Difference]: Finished difference. Result has 243 places, 338 transitions, 4548 flow [2024-11-07 11:27:48,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4548, PETRI_PLACES=243, PETRI_TRANSITIONS=338} [2024-11-07 11:27:48,373 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 219 predicate places. [2024-11-07 11:27:48,373 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 338 transitions, 4548 flow [2024-11-07 11:27:48,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:48,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:48,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:48,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-07 11:27:48,574 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 11:27:48,575 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 11:27:48,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:48,575 INFO L85 PathProgramCache]: Analyzing trace with hash -324685818, now seen corresponding path program 7 times [2024-11-07 11:27:48,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:48,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197431994] [2024-11-07 11:27:48,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:48,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:48,739 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 11:27:48,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:48,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197431994] [2024-11-07 11:27:48,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197431994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:48,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214256560] [2024-11-07 11:27:48,740 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:27:48,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:48,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:48,742 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 11:27:48,744 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 11:27:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:48,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:48,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:48,949 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 11:27:48,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:49,081 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 11:27:49,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214256560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:49,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:49,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-07 11:27:49,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528869505] [2024-11-07 11:27:49,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:49,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 11:27:49,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 11:27:49,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:27:49,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:27:49,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 338 transitions, 4548 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:49,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:49,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:27:49,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:49,631 INFO L124 PetriNetUnfolderBase]: 903/1727 cut-off events. [2024-11-07 11:27:49,631 INFO L125 PetriNetUnfolderBase]: For 16069/16069 co-relation queries the response was YES. [2024-11-07 11:27:49,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11581 conditions, 1727 events. 903/1727 cut-off events. For 16069/16069 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9887 event pairs, 88 based on Foata normal form. 2/1729 useless extension candidates. Maximal degree in co-relation 11515. Up to 1213 conditions per place. [2024-11-07 11:27:49,649 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 175 selfloop transitions, 204 changer transitions 8/388 dead transitions. [2024-11-07 11:27:49,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 388 transitions, 5726 flow [2024-11-07 11:27:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 11:27:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 11:27:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 138 transitions. [2024-11-07 11:27:49,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-11-07 11:27:49,651 INFO L175 Difference]: Start difference. First operand has 243 places, 338 transitions, 4548 flow. Second operand 18 states and 138 transitions. [2024-11-07 11:27:49,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 388 transitions, 5726 flow [2024-11-07 11:27:49,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 388 transitions, 5664 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-11-07 11:27:49,772 INFO L231 Difference]: Finished difference. Result has 254 places, 354 transitions, 5532 flow [2024-11-07 11:27:49,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4486, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5532, PETRI_PLACES=254, PETRI_TRANSITIONS=354} [2024-11-07 11:27:49,774 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 230 predicate places. [2024-11-07 11:27:49,774 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 354 transitions, 5532 flow [2024-11-07 11:27:49,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:49,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:49,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:49,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-07 11:27:49,975 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 11:27:49,976 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 11:27:49,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:49,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1345255678, now seen corresponding path program 8 times [2024-11-07 11:27:49,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:49,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65847334] [2024-11-07 11:27:49,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:49,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:50,132 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 11:27:50,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:50,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65847334] [2024-11-07 11:27:50,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65847334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:50,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964321279] [2024-11-07 11:27:50,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:27:50,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:50,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:50,135 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 11:27:50,137 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 11:27:50,181 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:27:50,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:50,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:50,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:50,334 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 11:27:50,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:50,486 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 11:27:50,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964321279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:50,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:50,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-07 11:27:50,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749549075] [2024-11-07 11:27:50,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:50,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 11:27:50,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:50,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 11:27:50,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:27:50,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:27:50,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 354 transitions, 5532 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:50,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:50,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:27:50,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:51,127 INFO L124 PetriNetUnfolderBase]: 908/1742 cut-off events. [2024-11-07 11:27:51,127 INFO L125 PetriNetUnfolderBase]: For 19802/19802 co-relation queries the response was YES. [2024-11-07 11:27:51,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12797 conditions, 1742 events. 908/1742 cut-off events. For 19802/19802 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10039 event pairs, 88 based on Foata normal form. 2/1744 useless extension candidates. Maximal degree in co-relation 12726. Up to 1120 conditions per place. [2024-11-07 11:27:51,152 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 170 selfloop transitions, 216 changer transitions 8/395 dead transitions. [2024-11-07 11:27:51,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 395 transitions, 6604 flow [2024-11-07 11:27:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 11:27:51,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 11:27:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 139 transitions. [2024-11-07 11:27:51,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33253588516746413 [2024-11-07 11:27:51,153 INFO L175 Difference]: Start difference. First operand has 254 places, 354 transitions, 5532 flow. Second operand 19 states and 139 transitions. [2024-11-07 11:27:51,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 395 transitions, 6604 flow [2024-11-07 11:27:51,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 395 transitions, 6532 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-11-07 11:27:51,272 INFO L231 Difference]: Finished difference. Result has 267 places, 363 transitions, 6292 flow [2024-11-07 11:27:51,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5466, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6292, PETRI_PLACES=267, PETRI_TRANSITIONS=363} [2024-11-07 11:27:51,273 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 243 predicate places. [2024-11-07 11:27:51,273 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 363 transitions, 6292 flow [2024-11-07 11:27:51,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:51,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:51,273 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:51,286 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 11:27:51,476 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 11:27:51,476 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 11:27:51,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash 89811812, now seen corresponding path program 9 times [2024-11-07 11:27:51,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:51,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117697633] [2024-11-07 11:27:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:51,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:51,639 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 11:27:51,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:51,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117697633] [2024-11-07 11:27:51,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117697633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:51,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832315053] [2024-11-07 11:27:51,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:27:51,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:51,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:51,642 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 11:27:51,643 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 11:27:51,688 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:27:51,688 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:51,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:51,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:51,822 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 11:27:51,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:51,961 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 11:27:51,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832315053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:51,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:51,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-07 11:27:51,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816818935] [2024-11-07 11:27:51,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:51,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 11:27:51,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:51,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 11:27:51,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:27:51,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:27:51,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 363 transitions, 6292 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:51,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:51,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:27:51,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:52,709 INFO L124 PetriNetUnfolderBase]: 912/1752 cut-off events. [2024-11-07 11:27:52,710 INFO L125 PetriNetUnfolderBase]: For 25400/25400 co-relation queries the response was YES. [2024-11-07 11:27:52,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13802 conditions, 1752 events. 912/1752 cut-off events. For 25400/25400 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10117 event pairs, 82 based on Foata normal form. 1/1753 useless extension candidates. Maximal degree in co-relation 13726. Up to 1131 conditions per place. [2024-11-07 11:27:52,724 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 164 selfloop transitions, 234 changer transitions 4/403 dead transitions. [2024-11-07 11:27:52,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 403 transitions, 7338 flow [2024-11-07 11:27:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 11:27:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-07 11:27:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 168 transitions. [2024-11-07 11:27:52,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-11-07 11:27:52,726 INFO L175 Difference]: Start difference. First operand has 267 places, 363 transitions, 6292 flow. Second operand 24 states and 168 transitions. [2024-11-07 11:27:52,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 403 transitions, 7338 flow [2024-11-07 11:27:52,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 403 transitions, 7305 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-07 11:27:52,858 INFO L231 Difference]: Finished difference. Result has 285 places, 368 transitions, 6845 flow [2024-11-07 11:27:52,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6260, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6845, PETRI_PLACES=285, PETRI_TRANSITIONS=368} [2024-11-07 11:27:52,859 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 261 predicate places. [2024-11-07 11:27:52,859 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 368 transitions, 6845 flow [2024-11-07 11:27:52,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:52,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:52,859 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:52,872 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 11:27:53,060 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 11:27:53,060 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 11:27:53,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:53,061 INFO L85 PathProgramCache]: Analyzing trace with hash 263059504, now seen corresponding path program 10 times [2024-11-07 11:27:53,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:53,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101383759] [2024-11-07 11:27:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:53,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:53,212 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 11:27:53,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:53,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101383759] [2024-11-07 11:27:53,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101383759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:53,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955035375] [2024-11-07 11:27:53,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:27:53,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:53,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:53,216 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 11:27:53,217 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 11:27:53,268 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:27:53,268 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:53,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:53,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:53,451 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 11:27:53,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:53,607 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 11:27:53,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955035375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:53,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:53,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-07 11:27:53,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859250928] [2024-11-07 11:27:53,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:53,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 11:27:53,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:53,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 11:27:53,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:27:53,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:27:53,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 368 transitions, 6845 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:53,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:53,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:27:53,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:54,288 INFO L124 PetriNetUnfolderBase]: 917/1769 cut-off events. [2024-11-07 11:27:54,288 INFO L125 PetriNetUnfolderBase]: For 27172/27172 co-relation queries the response was YES. [2024-11-07 11:27:54,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14595 conditions, 1769 events. 917/1769 cut-off events. For 27172/27172 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10295 event pairs, 99 based on Foata normal form. 2/1771 useless extension candidates. Maximal degree in co-relation 14518. Up to 1138 conditions per place. [2024-11-07 11:27:54,308 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 159 selfloop transitions, 244 changer transitions 8/412 dead transitions. [2024-11-07 11:27:54,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 412 transitions, 7965 flow [2024-11-07 11:27:54,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-07 11:27:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-07 11:27:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 176 transitions. [2024-11-07 11:27:54,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-11-07 11:27:54,309 INFO L175 Difference]: Start difference. First operand has 285 places, 368 transitions, 6845 flow. Second operand 25 states and 176 transitions. [2024-11-07 11:27:54,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 412 transitions, 7965 flow [2024-11-07 11:27:54,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 412 transitions, 7612 flow, removed 7 selfloop flow, removed 19 redundant places. [2024-11-07 11:27:54,524 INFO L231 Difference]: Finished difference. Result has 296 places, 373 transitions, 7384 flow [2024-11-07 11:27:54,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6492, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7384, PETRI_PLACES=296, PETRI_TRANSITIONS=373} [2024-11-07 11:27:54,525 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 272 predicate places. [2024-11-07 11:27:54,525 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 373 transitions, 7384 flow [2024-11-07 11:27:54,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:54,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:54,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:54,543 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 11:27:54,726 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 11:27:54,726 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 11:27:54,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:54,727 INFO L85 PathProgramCache]: Analyzing trace with hash 963552492, now seen corresponding path program 11 times [2024-11-07 11:27:54,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:54,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452173090] [2024-11-07 11:27:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:54,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:54,893 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 11:27:54,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:54,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452173090] [2024-11-07 11:27:54,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452173090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:54,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122689137] [2024-11-07 11:27:54,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:27:54,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:54,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:54,897 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 11:27:54,898 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 11:27:54,942 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:27:54,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:54,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:54,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:55,130 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 11:27:55,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:55,300 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 11:27:55,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122689137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:55,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:55,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-07 11:27:55,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111195939] [2024-11-07 11:27:55,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:55,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 11:27:55,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:55,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 11:27:55,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:27:55,308 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:27:55,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 373 transitions, 7384 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:55,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:55,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:27:55,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:56,408 INFO L124 PetriNetUnfolderBase]: 979/1893 cut-off events. [2024-11-07 11:27:56,408 INFO L125 PetriNetUnfolderBase]: For 35025/35025 co-relation queries the response was YES. [2024-11-07 11:27:56,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16288 conditions, 1893 events. 979/1893 cut-off events. For 35025/35025 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11258 event pairs, 75 based on Foata normal form. 3/1896 useless extension candidates. Maximal degree in co-relation 16205. Up to 982 conditions per place. [2024-11-07 11:27:56,431 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 183 selfloop transitions, 293 changer transitions 12/489 dead transitions. [2024-11-07 11:27:56,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 489 transitions, 9562 flow [2024-11-07 11:27:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-07 11:27:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-07 11:27:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 285 transitions. [2024-11-07 11:27:56,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3321678321678322 [2024-11-07 11:27:56,434 INFO L175 Difference]: Start difference. First operand has 296 places, 373 transitions, 7384 flow. Second operand 39 states and 285 transitions. [2024-11-07 11:27:56,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 489 transitions, 9562 flow [2024-11-07 11:27:56,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 489 transitions, 9365 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-11-07 11:27:56,707 INFO L231 Difference]: Finished difference. Result has 328 places, 419 transitions, 9028 flow [2024-11-07 11:27:56,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7188, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=9028, PETRI_PLACES=328, PETRI_TRANSITIONS=419} [2024-11-07 11:27:56,708 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 304 predicate places. [2024-11-07 11:27:56,708 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 419 transitions, 9028 flow [2024-11-07 11:27:56,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:56,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:56,709 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:56,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-07 11:27:56,909 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 11:27:56,909 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 11:27:56,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1613071098, now seen corresponding path program 12 times [2024-11-07 11:27:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:56,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406770078] [2024-11-07 11:27:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:56,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:57,069 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 11:27:57,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:57,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406770078] [2024-11-07 11:27:57,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406770078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:57,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146484552] [2024-11-07 11:27:57,069 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:27:57,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:57,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:57,072 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 11:27:57,073 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 11:27:57,112 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-07 11:27:57,113 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:57,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:57,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:57,281 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 11:27:57,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:57,415 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 11:27:57,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146484552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:57,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:57,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-07 11:27:57,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616961496] [2024-11-07 11:27:57,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:57,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 11:27:57,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:57,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 11:27:57,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:27:57,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:27:57,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 419 transitions, 9028 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:57,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:57,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:27:57,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:59,260 INFO L124 PetriNetUnfolderBase]: 1037/2017 cut-off events. [2024-11-07 11:27:59,260 INFO L125 PetriNetUnfolderBase]: For 51421/51421 co-relation queries the response was YES. [2024-11-07 11:27:59,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19152 conditions, 2017 events. 1037/2017 cut-off events. For 51421/51421 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12256 event pairs, 71 based on Foata normal form. 3/2020 useless extension candidates. Maximal degree in co-relation 19058. Up to 858 conditions per place. [2024-11-07 11:27:59,284 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 194 selfloop transitions, 368 changer transitions 12/575 dead transitions. [2024-11-07 11:27:59,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 575 transitions, 12026 flow [2024-11-07 11:27:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-07 11:27:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-11-07 11:27:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 415 transitions. [2024-11-07 11:27:59,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32523510971786834 [2024-11-07 11:27:59,285 INFO L175 Difference]: Start difference. First operand has 328 places, 419 transitions, 9028 flow. Second operand 58 states and 415 transitions. [2024-11-07 11:27:59,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 575 transitions, 12026 flow [2024-11-07 11:27:59,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 575 transitions, 11601 flow, removed 150 selfloop flow, removed 17 redundant places. [2024-11-07 11:27:59,564 INFO L231 Difference]: Finished difference. Result has 372 places, 482 transitions, 11032 flow [2024-11-07 11:27:59,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=8716, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=11032, PETRI_PLACES=372, PETRI_TRANSITIONS=482} [2024-11-07 11:27:59,565 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 348 predicate places. [2024-11-07 11:27:59,565 INFO L471 AbstractCegarLoop]: Abstraction has has 372 places, 482 transitions, 11032 flow [2024-11-07 11:27:59,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:59,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:59,566 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:59,579 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 11:27:59,767 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 11:27:59,767 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 11:27:59,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1745343138, now seen corresponding path program 13 times [2024-11-07 11:27:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:59,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376959814] [2024-11-07 11:27:59,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:59,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:59,914 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 11:27:59,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:59,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376959814] [2024-11-07 11:27:59,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376959814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:59,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614664794] [2024-11-07 11:27:59,915 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:27:59,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:59,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:59,917 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 11:27:59,917 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 11:27:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:59,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:27:59,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:00,096 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 11:28:00,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:00,248 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 11:28:00,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614664794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:00,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:00,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-07 11:28:00,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790285503] [2024-11-07 11:28:00,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:00,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 11:28:00,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:00,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 11:28:00,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:28:00,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:28:00,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 482 transitions, 11032 flow. Second operand has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 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 11:28:00,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:00,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:28:00,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:01,772 INFO L124 PetriNetUnfolderBase]: 1202/2285 cut-off events. [2024-11-07 11:28:01,772 INFO L125 PetriNetUnfolderBase]: For 59640/59640 co-relation queries the response was YES. [2024-11-07 11:28:01,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22815 conditions, 2285 events. 1202/2285 cut-off events. For 59640/59640 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 13872 event pairs, 77 based on Foata normal form. 3/2288 useless extension candidates. Maximal degree in co-relation 22604. Up to 906 conditions per place. [2024-11-07 11:28:01,799 INFO L140 encePairwiseOnDemand]: 9/22 looper letters, 237 selfloop transitions, 391 changer transitions 15/644 dead transitions. [2024-11-07 11:28:01,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 644 transitions, 14535 flow [2024-11-07 11:28:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-07 11:28:01,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-07 11:28:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 371 transitions. [2024-11-07 11:28:01,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35880077369439073 [2024-11-07 11:28:01,801 INFO L175 Difference]: Start difference. First operand has 372 places, 482 transitions, 11032 flow. Second operand 47 states and 371 transitions. [2024-11-07 11:28:01,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 644 transitions, 14535 flow [2024-11-07 11:28:02,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 644 transitions, 13748 flow, removed 297 selfloop flow, removed 29 redundant places. [2024-11-07 11:28:02,138 INFO L231 Difference]: Finished difference. Result has 389 places, 546 transitions, 13041 flow [2024-11-07 11:28:02,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=10401, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=13041, PETRI_PLACES=389, PETRI_TRANSITIONS=546} [2024-11-07 11:28:02,139 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 365 predicate places. [2024-11-07 11:28:02,139 INFO L471 AbstractCegarLoop]: Abstraction has has 389 places, 546 transitions, 13041 flow [2024-11-07 11:28:02,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 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 11:28:02,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:02,139 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:02,151 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 11:28:02,339 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 11:28:02,340 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 11:28:02,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:02,340 INFO L85 PathProgramCache]: Analyzing trace with hash 704012910, now seen corresponding path program 14 times [2024-11-07 11:28:02,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:02,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816695177] [2024-11-07 11:28:02,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:02,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:02,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:02,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816695177] [2024-11-07 11:28:02,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816695177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:02,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244040418] [2024-11-07 11:28:02,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:28:02,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:02,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:02,539 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 11:28:02,541 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 11:28:02,589 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:28:02,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:02,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:28:02,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:02,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:02,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244040418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:02,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:02,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-07 11:28:02,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528783593] [2024-11-07 11:28:02,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:02,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-07 11:28:02,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:02,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-07 11:28:02,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2024-11-07 11:28:02,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:28:02,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 546 transitions, 13041 flow. Second operand has 31 states, 31 states have (on average 4.67741935483871) internal successors, (145), 31 states have internal predecessors, (145), 0 states have call successors, (0), 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 11:28:02,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:02,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:28:02,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:07,995 INFO L124 PetriNetUnfolderBase]: 2983/5488 cut-off events. [2024-11-07 11:28:07,995 INFO L125 PetriNetUnfolderBase]: For 142793/142793 co-relation queries the response was YES. [2024-11-07 11:28:08,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55621 conditions, 5488 events. 2983/5488 cut-off events. For 142793/142793 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 37483 event pairs, 93 based on Foata normal form. 52/5540 useless extension candidates. Maximal degree in co-relation 55131. Up to 1545 conditions per place. [2024-11-07 11:28:08,123 INFO L140 encePairwiseOnDemand]: 9/22 looper letters, 521 selfloop transitions, 1054 changer transitions 21/1597 dead transitions. [2024-11-07 11:28:08,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 1597 transitions, 36996 flow [2024-11-07 11:28:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-07 11:28:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2024-11-07 11:28:08,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 1057 transitions. [2024-11-07 11:28:08,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-11-07 11:28:08,126 INFO L175 Difference]: Start difference. First operand has 389 places, 546 transitions, 13041 flow. Second operand 126 states and 1057 transitions. [2024-11-07 11:28:08,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 1597 transitions, 36996 flow [2024-11-07 11:28:09,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 1597 transitions, 35811 flow, removed 374 selfloop flow, removed 23 redundant places. [2024-11-07 11:28:09,040 INFO L231 Difference]: Finished difference. Result has 532 places, 1254 transitions, 33454 flow [2024-11-07 11:28:09,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=12580, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=432, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=33454, PETRI_PLACES=532, PETRI_TRANSITIONS=1254} [2024-11-07 11:28:09,041 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 508 predicate places. [2024-11-07 11:28:09,041 INFO L471 AbstractCegarLoop]: Abstraction has has 532 places, 1254 transitions, 33454 flow [2024-11-07 11:28:09,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.67741935483871) internal successors, (145), 31 states have internal predecessors, (145), 0 states have call successors, (0), 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 11:28:09,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:09,042 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:09,053 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 11:28:09,242 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 11:28:09,242 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 11:28:09,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:09,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1746344626, now seen corresponding path program 15 times [2024-11-07 11:28:09,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:09,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727700631] [2024-11-07 11:28:09,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:09,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:09,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727700631] [2024-11-07 11:28:09,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727700631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643341053] [2024-11-07 11:28:09,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:28:09,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:09,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:09,450 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 11:28:09,451 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 11:28:09,490 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 11:28:09,490 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:09,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:28:09,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:09,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:09,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643341053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:09,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:09,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-07 11:28:09,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770509854] [2024-11-07 11:28:09,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:09,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-07 11:28:09,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:09,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-07 11:28:09,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-11-07 11:28:09,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:28:09,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 1254 transitions, 33454 flow. Second operand has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 11:28:09,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:09,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:28:09,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:16,617 INFO L124 PetriNetUnfolderBase]: 4033/7299 cut-off events. [2024-11-07 11:28:16,617 INFO L125 PetriNetUnfolderBase]: For 276504/276504 co-relation queries the response was YES. [2024-11-07 11:28:16,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85892 conditions, 7299 events. 4033/7299 cut-off events. For 276504/276504 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 51425 event pairs, 111 based on Foata normal form. 9/7308 useless extension candidates. Maximal degree in co-relation 85745. Up to 2266 conditions per place. [2024-11-07 11:28:16,710 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 625 selfloop transitions, 1359 changer transitions 29/2014 dead transitions. [2024-11-07 11:28:16,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 2014 transitions, 53581 flow [2024-11-07 11:28:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2024-11-07 11:28:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2024-11-07 11:28:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 1163 transitions. [2024-11-07 11:28:16,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3571867321867322 [2024-11-07 11:28:16,713 INFO L175 Difference]: Start difference. First operand has 532 places, 1254 transitions, 33454 flow. Second operand 148 states and 1163 transitions. [2024-11-07 11:28:16,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 2014 transitions, 53581 flow [2024-11-07 11:28:18,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 2014 transitions, 51874 flow, removed 759 selfloop flow, removed 20 redundant places. [2024-11-07 11:28:18,974 INFO L231 Difference]: Finished difference. Result has 682 places, 1655 transitions, 48223 flow [2024-11-07 11:28:18,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=32348, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=980, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=148, PETRI_FLOW=48223, PETRI_PLACES=682, PETRI_TRANSITIONS=1655} [2024-11-07 11:28:18,975 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 658 predicate places. [2024-11-07 11:28:18,975 INFO L471 AbstractCegarLoop]: Abstraction has has 682 places, 1655 transitions, 48223 flow [2024-11-07 11:28:18,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 11:28:18,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:18,975 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 11:28:18,987 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 11:28:19,176 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 11:28:19,176 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 11:28:19,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:19,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1749761351, now seen corresponding path program 1 times [2024-11-07 11:28:19,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:19,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025868106] [2024-11-07 11:28:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:19,339 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 11:28:19,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:19,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025868106] [2024-11-07 11:28:19,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025868106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:19,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987829987] [2024-11-07 11:28:19,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:19,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:19,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:19,342 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 11:28:19,344 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 11:28:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:19,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:28:19,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:19,564 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 11:28:19,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:19,704 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 11:28:19,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987829987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:19,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:19,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2024-11-07 11:28:19,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176996430] [2024-11-07 11:28:19,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:19,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-07 11:28:19,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:19,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-07 11:28:19,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2024-11-07 11:28:19,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:28:19,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 1655 transitions, 48223 flow. Second operand has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 0 states have call successors, (0), 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 11:28:19,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:19,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:28:19,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:23,459 INFO L124 PetriNetUnfolderBase]: 4029/7270 cut-off events. [2024-11-07 11:28:23,460 INFO L125 PetriNetUnfolderBase]: For 363915/363915 co-relation queries the response was YES. [2024-11-07 11:28:23,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91404 conditions, 7270 events. 4029/7270 cut-off events. For 363915/363915 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 51030 event pairs, 152 based on Foata normal form. 2/7272 useless extension candidates. Maximal degree in co-relation 91234. Up to 3974 conditions per place. [2024-11-07 11:28:23,585 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 738 selfloop transitions, 988 changer transitions 23/1750 dead transitions. [2024-11-07 11:28:23,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 1750 transitions, 52830 flow [2024-11-07 11:28:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-07 11:28:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-07 11:28:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 289 transitions. [2024-11-07 11:28:23,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-11-07 11:28:23,587 INFO L175 Difference]: Start difference. First operand has 682 places, 1655 transitions, 48223 flow. Second operand 34 states and 289 transitions. [2024-11-07 11:28:23,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 1750 transitions, 52830 flow [2024-11-07 11:28:27,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 1750 transitions, 51291 flow, removed 319 selfloop flow, removed 57 redundant places. [2024-11-07 11:28:27,379 INFO L231 Difference]: Finished difference. Result has 658 places, 1654 transitions, 48765 flow [2024-11-07 11:28:27,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=46711, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=984, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=48765, PETRI_PLACES=658, PETRI_TRANSITIONS=1654} [2024-11-07 11:28:27,381 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 634 predicate places. [2024-11-07 11:28:27,382 INFO L471 AbstractCegarLoop]: Abstraction has has 658 places, 1654 transitions, 48765 flow [2024-11-07 11:28:27,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 0 states have call successors, (0), 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 11:28:27,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:27,382 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:27,400 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 11:28:27,583 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 11:28:27,583 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 11:28:27,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:27,584 INFO L85 PathProgramCache]: Analyzing trace with hash 643665236, now seen corresponding path program 16 times [2024-11-07 11:28:27,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:27,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255063761] [2024-11-07 11:28:27,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:27,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:27,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:27,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255063761] [2024-11-07 11:28:27,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255063761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:27,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4213365] [2024-11-07 11:28:27,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:28:27,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:27,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:27,760 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 11:28:27,761 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 11:28:27,799 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:28:27,799 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:27,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:28:27,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:28,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:28,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4213365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:28,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:28,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-07 11:28:28,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796846567] [2024-11-07 11:28:28,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:28,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-07 11:28:28,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-07 11:28:28,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2024-11-07 11:28:28,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:28:28,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 1654 transitions, 48765 flow. Second operand has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 11:28:28,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:28,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:28:28,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:32,694 INFO L124 PetriNetUnfolderBase]: 4313/7735 cut-off events. [2024-11-07 11:28:32,695 INFO L125 PetriNetUnfolderBase]: For 403318/403318 co-relation queries the response was YES. [2024-11-07 11:28:32,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100073 conditions, 7735 events. 4313/7735 cut-off events. For 403318/403318 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 54583 event pairs, 208 based on Foata normal form. 3/7738 useless extension candidates. Maximal degree in co-relation 99827. Up to 4525 conditions per place. [2024-11-07 11:28:32,800 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 741 selfloop transitions, 1138 changer transitions 12/1892 dead transitions. [2024-11-07 11:28:32,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 1892 transitions, 58148 flow [2024-11-07 11:28:32,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-07 11:28:32,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-07 11:28:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 398 transitions. [2024-11-07 11:28:32,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34133790737564323 [2024-11-07 11:28:32,802 INFO L175 Difference]: Start difference. First operand has 658 places, 1654 transitions, 48765 flow. Second operand 53 states and 398 transitions. [2024-11-07 11:28:32,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 1892 transitions, 58148 flow [2024-11-07 11:28:36,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 1892 transitions, 55968 flow, removed 38 selfloop flow, removed 32 redundant places. [2024-11-07 11:28:36,714 INFO L231 Difference]: Finished difference. Result has 679 places, 1781 transitions, 53987 flow [2024-11-07 11:28:36,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=46792, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1013, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=53987, PETRI_PLACES=679, PETRI_TRANSITIONS=1781} [2024-11-07 11:28:36,717 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 655 predicate places. [2024-11-07 11:28:36,717 INFO L471 AbstractCegarLoop]: Abstraction has has 679 places, 1781 transitions, 53987 flow [2024-11-07 11:28:36,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 11:28:36,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:36,717 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:36,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-07 11:28:36,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:36,918 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:28:36,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:36,919 INFO L85 PathProgramCache]: Analyzing trace with hash -628764844, now seen corresponding path program 17 times [2024-11-07 11:28:36,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:36,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974210042] [2024-11-07 11:28:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:36,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:37,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:37,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974210042] [2024-11-07 11:28:37,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974210042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:37,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882383407] [2024-11-07 11:28:37,115 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:28:37,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:37,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:37,118 INFO L229 MonitoredProcess]: Starting monitored process 19 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 11:28:37,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-07 11:28:37,168 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-07 11:28:37,168 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:37,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:28:37,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:37,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:28:37,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882383407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:37,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:37,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-07 11:28:37,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696865331] [2024-11-07 11:28:37,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:37,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-07 11:28:37,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:37,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-07 11:28:37,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-11-07 11:28:37,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:28:37,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 1781 transitions, 53987 flow. Second operand has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 11:28:37,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:37,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:28:37,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:47,194 INFO L124 PetriNetUnfolderBase]: 6446/11492 cut-off events. [2024-11-07 11:28:47,194 INFO L125 PetriNetUnfolderBase]: For 606233/606233 co-relation queries the response was YES. [2024-11-07 11:28:47,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151750 conditions, 11492 events. 6446/11492 cut-off events. For 606233/606233 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 87628 event pairs, 207 based on Foata normal form. 9/11501 useless extension candidates. Maximal degree in co-relation 151583. Up to 4111 conditions per place. [2024-11-07 11:28:47,391 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 914 selfloop transitions, 2064 changer transitions 26/3005 dead transitions. [2024-11-07 11:28:47,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 801 places, 3005 transitions, 93518 flow [2024-11-07 11:28:47,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-07 11:28:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2024-11-07 11:28:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 933 transitions. [2024-11-07 11:28:47,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3365800865800866 [2024-11-07 11:28:47,394 INFO L175 Difference]: Start difference. First operand has 679 places, 1781 transitions, 53987 flow. Second operand 126 states and 933 transitions. [2024-11-07 11:28:47,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 801 places, 3005 transitions, 93518 flow [2024-11-07 11:28:54,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 3005 transitions, 93320 flow, removed 22 selfloop flow, removed 16 redundant places. [2024-11-07 11:28:54,698 INFO L231 Difference]: Finished difference. Result has 840 places, 2733 transitions, 92428 flow [2024-11-07 11:28:54,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=53828, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=92428, PETRI_PLACES=840, PETRI_TRANSITIONS=2733} [2024-11-07 11:28:54,700 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 816 predicate places. [2024-11-07 11:28:54,700 INFO L471 AbstractCegarLoop]: Abstraction has has 840 places, 2733 transitions, 92428 flow [2024-11-07 11:28:54,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 11:28:54,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:54,701 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 11:28:54,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-07 11:28:54,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-07 11:28:54,901 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:28:54,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:54,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1211905773, now seen corresponding path program 2 times [2024-11-07 11:28:54,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:54,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196815132] [2024-11-07 11:28:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:54,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:55,091 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 11:28:55,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:55,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196815132] [2024-11-07 11:28:55,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196815132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:55,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692413465] [2024-11-07 11:28:55,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:28:55,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:55,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:55,094 INFO L229 MonitoredProcess]: Starting monitored process 20 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 11:28:55,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-07 11:28:55,146 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:28:55,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:55,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:28:55,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:55,340 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 11:28:55,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:28:55,503 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 11:28:55,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692413465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:28:55,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:28:55,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-11-07 11:28:55,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900126949] [2024-11-07 11:28:55,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:28:55,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-07 11:28:55,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:28:55,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-07 11:28:55,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2024-11-07 11:28:55,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-07 11:28:55,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 2733 transitions, 92428 flow. Second operand has 30 states, 30 states have (on average 4.333333333333333) internal successors, (130), 30 states have internal predecessors, (130), 0 states have call successors, (0), 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 11:28:55,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:28:55,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-07 11:28:55,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand