./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-5.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/parallel-misc-5.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', '103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f'] 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/parallel-misc-5.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 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:25:43,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:25:43,999 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:25:44,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:25:44,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:25:44,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:25:44,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:25:44,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:25:44,019 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:25:44,020 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:25:44,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:25:44,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:25:44,020 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:25:44,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:25:44,020 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:25:44,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:25:44,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:25:44,020 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:25:44,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:25:44,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:25:44,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:25:44,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:25:44,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:25:44,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:25:44,021 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:25:44,021 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:25:44,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:25:44,021 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:25:44,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:25:44,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:25:44,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:25:44,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:25:44,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:25:44,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:25:44,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:25:44,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:25:44,022 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:25:44,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:25:44,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:25:44,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:25:44,023 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:25:44,023 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:25:44,023 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 -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2024-11-07 11:25:44,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:25:44,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:25:44,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:25:44,258 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:25:44,258 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:25:44,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-11-07 11:25:45,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:25:45,528 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:25:45,529 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-11-07 11:25:45,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a563e248c/d5ed8be37260438c99905cd5ef5b092e/FLAG0968494a8 [2024-11-07 11:25:45,916 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a563e248c/d5ed8be37260438c99905cd5ef5b092e [2024-11-07 11:25:45,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:25:45,918 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:25:45,919 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:25:45,919 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:25:45,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:25:45,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:25:45" (1/1) ... [2024-11-07 11:25:45,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f42093a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:45, skipping insertion in model container [2024-11-07 11:25:45,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:25:45" (1/1) ... [2024-11-07 11:25:45,932 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:25:46,029 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/parallel-misc-5.wvr.c[3066,3079] [2024-11-07 11:25:46,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:25:46,036 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:25:46,049 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/parallel-misc-5.wvr.c[3066,3079] [2024-11-07 11:25:46,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:25:46,062 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:25:46,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46 WrapperNode [2024-11-07 11:25:46,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:25:46,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:25:46,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:25:46,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:25:46,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (1/1) ... [2024-11-07 11:25:46,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (1/1) ... [2024-11-07 11:25:46,097 INFO L138 Inliner]: procedures = 21, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-11-07 11:25:46,098 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:25:46,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:25:46,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:25:46,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:25:46,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (1/1) ... [2024-11-07 11:25:46,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (1/1) ... [2024-11-07 11:25:46,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (1/1) ... [2024-11-07 11:25:46,125 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 11:25:46,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (1/1) ... [2024-11-07 11:25:46,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (1/1) ... [2024-11-07 11:25:46,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (1/1) ... [2024-11-07 11:25:46,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (1/1) ... [2024-11-07 11:25:46,137 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (1/1) ... [2024-11-07 11:25:46,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (1/1) ... [2024-11-07 11:25:46,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:25:46,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:25:46,144 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:25:46,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:25:46,145 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (1/1) ... [2024-11-07 11:25:46,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:25:46,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:46,172 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 11:25:46,175 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 11:25:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:25:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:25:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:25:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:25:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:25:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 11:25:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 11:25:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:25:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 11:25:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 11:25:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:25:46,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:25:46,196 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 11:25:46,270 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:25:46,272 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:25:46,453 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:25:46,455 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:25:46,610 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:25:46,610 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 11:25:46,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:25:46 BoogieIcfgContainer [2024-11-07 11:25:46,611 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:25:46,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:25:46,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:25:46,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:25:46,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:25:45" (1/3) ... [2024-11-07 11:25:46,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ea555f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:25:46, skipping insertion in model container [2024-11-07 11:25:46,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:46" (2/3) ... [2024-11-07 11:25:46,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ea555f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:25:46, skipping insertion in model container [2024-11-07 11:25:46,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:25:46" (3/3) ... [2024-11-07 11:25:46,619 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2024-11-07 11:25:46,629 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:25:46,629 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:25:46,630 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:25:46,693 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 11:25:46,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 93 flow [2024-11-07 11:25:46,741 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-07 11:25:46,742 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:25:46,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 4/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 70 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-11-07 11:25:46,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 93 flow [2024-11-07 11:25:46,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 82 flow [2024-11-07 11:25:46,753 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:25:46,763 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;@75a9d8ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:25:46,763 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 11:25:46,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:25:46,776 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-11-07 11:25:46,776 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:25:46,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:46,777 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:46,777 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:25:46,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1869697828, now seen corresponding path program 1 times [2024-11-07 11:25:46,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:46,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703776710] [2024-11-07 11:25:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:46,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:47,222 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 11:25:47,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:47,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703776710] [2024-11-07 11:25:47,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703776710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:47,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:47,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:25:47,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995000058] [2024-11-07 11:25:47,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:47,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:25:47,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:47,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:25:47,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:25:47,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-07 11:25:47,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 11:25:47,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:47,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-07 11:25:47,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:47,698 INFO L124 PetriNetUnfolderBase]: 1930/2760 cut-off events. [2024-11-07 11:25:47,699 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-11-07 11:25:47,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5645 conditions, 2760 events. 1930/2760 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13547 event pairs, 66 based on Foata normal form. 0/2246 useless extension candidates. Maximal degree in co-relation 5542. Up to 970 conditions per place. [2024-11-07 11:25:47,718 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 71 selfloop transitions, 8 changer transitions 6/91 dead transitions. [2024-11-07 11:25:47,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 91 transitions, 385 flow [2024-11-07 11:25:47,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:25:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:25:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-11-07 11:25:47,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-11-07 11:25:47,730 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 82 flow. Second operand 6 states and 141 transitions. [2024-11-07 11:25:47,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 91 transitions, 385 flow [2024-11-07 11:25:47,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 91 transitions, 363 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 11:25:47,741 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 120 flow [2024-11-07 11:25:47,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-11-07 11:25:47,746 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-11-07 11:25:47,747 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 120 flow [2024-11-07 11:25:47,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 11:25:47,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:47,747 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:47,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:25:47,748 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:25:47,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:47,748 INFO L85 PathProgramCache]: Analyzing trace with hash 973632830, now seen corresponding path program 1 times [2024-11-07 11:25:47,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:47,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663656120] [2024-11-07 11:25:47,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:47,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:47,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:47,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663656120] [2024-11-07 11:25:47,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663656120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:47,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:47,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:25:47,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710530998] [2024-11-07 11:25:47,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:47,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:25:47,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:25:47,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:25:47,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-07 11:25:47,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:47,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:47,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-07 11:25:47,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:48,003 INFO L124 PetriNetUnfolderBase]: 1274/1985 cut-off events. [2024-11-07 11:25:48,003 INFO L125 PetriNetUnfolderBase]: For 484/518 co-relation queries the response was YES. [2024-11-07 11:25:48,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4363 conditions, 1985 events. 1274/1985 cut-off events. For 484/518 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9821 event pairs, 424 based on Foata normal form. 86/1666 useless extension candidates. Maximal degree in co-relation 3922. Up to 1047 conditions per place. [2024-11-07 11:25:48,012 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 45 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-07 11:25:48,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 273 flow [2024-11-07 11:25:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:25:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:25:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-07 11:25:48,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-11-07 11:25:48,014 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 120 flow. Second operand 3 states and 80 transitions. [2024-11-07 11:25:48,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 273 flow [2024-11-07 11:25:48,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:25:48,016 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 134 flow [2024-11-07 11:25:48,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-11-07 11:25:48,017 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2024-11-07 11:25:48,017 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 134 flow [2024-11-07 11:25:48,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:48,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:48,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:48,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:25:48,017 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:25:48,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:48,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1520712930, now seen corresponding path program 1 times [2024-11-07 11:25:48,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:48,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081983874] [2024-11-07 11:25:48,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:48,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:48,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:48,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081983874] [2024-11-07 11:25:48,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081983874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:48,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:48,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:25:48,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693610073] [2024-11-07 11:25:48,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:48,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:25:48,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:48,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:25:48,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:25:48,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-07 11:25:48,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:48,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:48,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-07 11:25:48,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:48,253 INFO L124 PetriNetUnfolderBase]: 1715/2705 cut-off events. [2024-11-07 11:25:48,253 INFO L125 PetriNetUnfolderBase]: For 968/1026 co-relation queries the response was YES. [2024-11-07 11:25:48,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6284 conditions, 2705 events. 1715/2705 cut-off events. For 968/1026 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14216 event pairs, 587 based on Foata normal form. 114/2305 useless extension candidates. Maximal degree in co-relation 5840. Up to 1613 conditions per place. [2024-11-07 11:25:48,267 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 44 selfloop transitions, 2 changer transitions 1/59 dead transitions. [2024-11-07 11:25:48,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 291 flow [2024-11-07 11:25:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:25:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:25:48,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-11-07 11:25:48,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-11-07 11:25:48,271 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 134 flow. Second operand 3 states and 78 transitions. [2024-11-07 11:25:48,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 291 flow [2024-11-07 11:25:48,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:25:48,274 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 148 flow [2024-11-07 11:25:48,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-07 11:25:48,275 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2024-11-07 11:25:48,275 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 148 flow [2024-11-07 11:25:48,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:48,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:48,276 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:48,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:25:48,276 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:25:48,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:48,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1930732514, now seen corresponding path program 1 times [2024-11-07 11:25:48,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:48,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951223016] [2024-11-07 11:25:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:48,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:25:48,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:48,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951223016] [2024-11-07 11:25:48,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951223016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:48,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:48,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:25:48,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885272601] [2024-11-07 11:25:48,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:48,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:25:48,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:25:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:25:48,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-07 11:25:48,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:48,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:48,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-07 11:25:48,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:48,623 INFO L124 PetriNetUnfolderBase]: 2217/3273 cut-off events. [2024-11-07 11:25:48,624 INFO L125 PetriNetUnfolderBase]: For 1592/1636 co-relation queries the response was YES. [2024-11-07 11:25:48,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8230 conditions, 3273 events. 2217/3273 cut-off events. For 1592/1636 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14718 event pairs, 156 based on Foata normal form. 44/2841 useless extension candidates. Maximal degree in co-relation 7532. Up to 1635 conditions per place. [2024-11-07 11:25:48,637 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 53 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-11-07 11:25:48,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 353 flow [2024-11-07 11:25:48,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:25:48,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:25:48,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-07 11:25:48,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-07 11:25:48,639 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 148 flow. Second operand 4 states and 85 transitions. [2024-11-07 11:25:48,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 353 flow [2024-11-07 11:25:48,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:25:48,644 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 173 flow [2024-11-07 11:25:48,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-07 11:25:48,645 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2024-11-07 11:25:48,645 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 173 flow [2024-11-07 11:25:48,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:48,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:48,645 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:48,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:25:48,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:25:48,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:48,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1261304906, now seen corresponding path program 2 times [2024-11-07 11:25:48,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:48,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354021249] [2024-11-07 11:25:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:48,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:25:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:48,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354021249] [2024-11-07 11:25:48,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354021249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:48,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328325354] [2024-11-07 11:25:48,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:25:48,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:48,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:48,785 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 11:25:48,786 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 11:25:48,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:25:48,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:48,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:25:48,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:48,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:49,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328325354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:49,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:49,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2024-11-07 11:25:49,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433602499] [2024-11-07 11:25:49,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:49,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 11:25:49,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:49,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 11:25:49,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-07 11:25:49,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-07 11:25:49,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 173 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 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 11:25:49,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:49,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-07 11:25:49,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:49,363 INFO L124 PetriNetUnfolderBase]: 2936/4328 cut-off events. [2024-11-07 11:25:49,364 INFO L125 PetriNetUnfolderBase]: For 2399/2456 co-relation queries the response was YES. [2024-11-07 11:25:49,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11073 conditions, 4328 events. 2936/4328 cut-off events. For 2399/2456 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21948 event pairs, 111 based on Foata normal form. 165/3964 useless extension candidates. Maximal degree in co-relation 10560. Up to 2614 conditions per place. [2024-11-07 11:25:49,382 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 70 selfloop transitions, 9 changer transitions 1/87 dead transitions. [2024-11-07 11:25:49,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 87 transitions, 477 flow [2024-11-07 11:25:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:25:49,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:25:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-11-07 11:25:49,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-11-07 11:25:49,384 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 173 flow. Second operand 6 states and 125 transitions. [2024-11-07 11:25:49,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 87 transitions, 477 flow [2024-11-07 11:25:49,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:25:49,390 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 210 flow [2024-11-07 11:25:49,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2024-11-07 11:25:49,392 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2024-11-07 11:25:49,392 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 210 flow [2024-11-07 11:25:49,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 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 11:25:49,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:49,392 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:49,409 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 11:25:49,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:49,593 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:25:49,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:49,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1094006826, now seen corresponding path program 3 times [2024-11-07 11:25:49,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:49,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665266594] [2024-11-07 11:25:49,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:49,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:25:49,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665266594] [2024-11-07 11:25:49,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665266594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:49,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:49,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:25:49,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130927461] [2024-11-07 11:25:49,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:49,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:25:49,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:49,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:25:49,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:25:49,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-07 11:25:49,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 11:25:49,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:49,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-07 11:25:49,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:50,044 INFO L124 PetriNetUnfolderBase]: 4229/6275 cut-off events. [2024-11-07 11:25:50,044 INFO L125 PetriNetUnfolderBase]: For 5699/5827 co-relation queries the response was YES. [2024-11-07 11:25:50,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16873 conditions, 6275 events. 4229/6275 cut-off events. For 5699/5827 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 32919 event pairs, 848 based on Foata normal form. 250/5719 useless extension candidates. Maximal degree in co-relation 13488. Up to 2457 conditions per place. [2024-11-07 11:25:50,065 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 69 selfloop transitions, 6 changer transitions 2/86 dead transitions. [2024-11-07 11:25:50,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 86 transitions, 518 flow [2024-11-07 11:25:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:25:50,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:25:50,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-07 11:25:50,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-11-07 11:25:50,067 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 210 flow. Second operand 5 states and 109 transitions. [2024-11-07 11:25:50,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 86 transitions, 518 flow [2024-11-07 11:25:50,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 86 transitions, 492 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-07 11:25:50,074 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 204 flow [2024-11-07 11:25:50,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-11-07 11:25:50,076 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2024-11-07 11:25:50,076 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 204 flow [2024-11-07 11:25:50,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 11:25:50,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:50,077 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:50,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:25:50,077 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:25:50,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:50,077 INFO L85 PathProgramCache]: Analyzing trace with hash -287348584, now seen corresponding path program 4 times [2024-11-07 11:25:50,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:50,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672997601] [2024-11-07 11:25:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:50,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:50,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:50,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672997601] [2024-11-07 11:25:50,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672997601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:50,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732576303] [2024-11-07 11:25:50,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:25:50,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:50,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:50,268 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 11:25:50,269 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 11:25:50,321 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:25:50,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:50,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 11:25:50,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:50,394 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 11:25:50,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:50,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732576303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:50,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:50,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 14 [2024-11-07 11:25:50,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441757160] [2024-11-07 11:25:50,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:50,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:25:50,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:50,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:25:50,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:25:50,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-07 11:25:50,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 204 flow. Second operand has 15 states, 15 states have (on average 11.866666666666667) internal successors, (178), 15 states have internal predecessors, (178), 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 11:25:50,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:50,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-07 11:25:50,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:51,599 INFO L124 PetriNetUnfolderBase]: 9235/14017 cut-off events. [2024-11-07 11:25:51,600 INFO L125 PetriNetUnfolderBase]: For 15229/15344 co-relation queries the response was YES. [2024-11-07 11:25:51,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37905 conditions, 14017 events. 9235/14017 cut-off events. For 15229/15344 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 85273 event pairs, 1191 based on Foata normal form. 429/12749 useless extension candidates. Maximal degree in co-relation 33095. Up to 3700 conditions per place. [2024-11-07 11:25:51,646 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 155 selfloop transitions, 35 changer transitions 27/225 dead transitions. [2024-11-07 11:25:51,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 225 transitions, 1308 flow [2024-11-07 11:25:51,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 11:25:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-07 11:25:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 329 transitions. [2024-11-07 11:25:51,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6092592592592593 [2024-11-07 11:25:51,648 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 204 flow. Second operand 15 states and 329 transitions. [2024-11-07 11:25:51,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 225 transitions, 1308 flow [2024-11-07 11:25:51,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 225 transitions, 1291 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 11:25:51,659 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 546 flow [2024-11-07 11:25:51,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=546, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2024-11-07 11:25:51,660 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 40 predicate places. [2024-11-07 11:25:51,660 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 546 flow [2024-11-07 11:25:51,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.866666666666667) internal successors, (178), 15 states have internal predecessors, (178), 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 11:25:51,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:51,660 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:51,673 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 11:25:51,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:51,861 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:25:51,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:51,861 INFO L85 PathProgramCache]: Analyzing trace with hash 900343102, now seen corresponding path program 5 times [2024-11-07 11:25:51,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:51,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377159467] [2024-11-07 11:25:51,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:51,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:25:51,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:51,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377159467] [2024-11-07 11:25:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377159467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:51,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979363734] [2024-11-07 11:25:51,931 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:25:51,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:51,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:51,933 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 11:25:51,934 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 11:25:51,992 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 11:25:51,992 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:51,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 11:25:51,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:52,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:25:52,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979363734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:52,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:52,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-11-07 11:25:52,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718604530] [2024-11-07 11:25:52,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:52,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:25:52,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:52,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:25:52,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:25:52,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-07 11:25:52,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 546 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 11:25:52,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:52,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-07 11:25:52,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:52,845 INFO L124 PetriNetUnfolderBase]: 7392/11805 cut-off events. [2024-11-07 11:25:52,845 INFO L125 PetriNetUnfolderBase]: For 23853/24311 co-relation queries the response was YES. [2024-11-07 11:25:52,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36540 conditions, 11805 events. 7392/11805 cut-off events. For 23853/24311 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 74484 event pairs, 3683 based on Foata normal form. 466/10684 useless extension candidates. Maximal degree in co-relation 34510. Up to 4310 conditions per place. [2024-11-07 11:25:52,922 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 108 selfloop transitions, 14 changer transitions 0/143 dead transitions. [2024-11-07 11:25:52,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 143 transitions, 1257 flow [2024-11-07 11:25:52,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:25:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:25:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-07 11:25:52,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-11-07 11:25:52,923 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 546 flow. Second operand 4 states and 113 transitions. [2024-11-07 11:25:52,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 143 transitions, 1257 flow [2024-11-07 11:25:52,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 143 transitions, 1051 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-11-07 11:25:53,000 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 589 flow [2024-11-07 11:25:53,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=589, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-11-07 11:25:53,000 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2024-11-07 11:25:53,000 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 589 flow [2024-11-07 11:25:53,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 11:25:53,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:53,001 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:53,014 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 11:25:53,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:53,205 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:25:53,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:53,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1081977900, now seen corresponding path program 1 times [2024-11-07 11:25:53,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:53,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592050942] [2024-11-07 11:25:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:53,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:25:53,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:53,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592050942] [2024-11-07 11:25:53,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592050942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:53,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501448007] [2024-11-07 11:25:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:53,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:53,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:53,280 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 11:25:53,281 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 11:25:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:53,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 11:25:53,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:53,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:25:53,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501448007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:53,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:53,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-11-07 11:25:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932716521] [2024-11-07 11:25:53,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:53,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:25:53,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:25:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:25:53,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-07 11:25:53,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 589 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 11:25:53,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:53,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-07 11:25:53,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:54,813 INFO L124 PetriNetUnfolderBase]: 15353/24646 cut-off events. [2024-11-07 11:25:54,813 INFO L125 PetriNetUnfolderBase]: For 39989/40815 co-relation queries the response was YES. [2024-11-07 11:25:54,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73414 conditions, 24646 events. 15353/24646 cut-off events. For 39989/40815 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 174313 event pairs, 6194 based on Foata normal form. 1024/22327 useless extension candidates. Maximal degree in co-relation 71633. Up to 8983 conditions per place. [2024-11-07 11:25:54,936 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 125 selfloop transitions, 21 changer transitions 0/167 dead transitions. [2024-11-07 11:25:54,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 167 transitions, 1490 flow [2024-11-07 11:25:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:25:54,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:25:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-07 11:25:54,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7569444444444444 [2024-11-07 11:25:54,937 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 589 flow. Second operand 4 states and 109 transitions. [2024-11-07 11:25:54,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 167 transitions, 1490 flow [2024-11-07 11:25:55,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 167 transitions, 1446 flow, removed 22 selfloop flow, removed 0 redundant places. [2024-11-07 11:25:55,004 INFO L231 Difference]: Finished difference. Result has 82 places, 99 transitions, 819 flow [2024-11-07 11:25:55,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=819, PETRI_PLACES=82, PETRI_TRANSITIONS=99} [2024-11-07 11:25:55,005 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 44 predicate places. [2024-11-07 11:25:55,005 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 99 transitions, 819 flow [2024-11-07 11:25:55,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 11:25:55,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:55,005 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:55,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 11:25:55,205 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,SelfDestructingSolverStorable8 [2024-11-07 11:25:55,206 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:25:55,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:55,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1913882398, now seen corresponding path program 6 times [2024-11-07 11:25:55,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:55,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093881250] [2024-11-07 11:25:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:55,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:25:55,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:55,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093881250] [2024-11-07 11:25:55,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093881250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:55,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372706445] [2024-11-07 11:25:55,406 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:25:55,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:55,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:55,408 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 11:25:55,409 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 11:25:55,466 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-07 11:25:55,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:55,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 11:25:55,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:25:55,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:25:55,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372706445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:55,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:55,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 15 [2024-11-07 11:25:55,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54824098] [2024-11-07 11:25:55,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:55,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:25:55,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:55,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:25:55,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:25:55,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-07 11:25:55,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 99 transitions, 819 flow. Second operand has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:55,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:55,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-07 11:25:55,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:26:00,153 INFO L124 PetriNetUnfolderBase]: 43127/65083 cut-off events. [2024-11-07 11:26:00,154 INFO L125 PetriNetUnfolderBase]: For 147443/147822 co-relation queries the response was YES. [2024-11-07 11:26:00,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205838 conditions, 65083 events. 43127/65083 cut-off events. For 147443/147822 co-relation queries the response was YES. Maximal size of possible extension queue 2099. Compared 471247 event pairs, 6714 based on Foata normal form. 2161/58739 useless extension candidates. Maximal degree in co-relation 199418. Up to 15250 conditions per place. [2024-11-07 11:26:00,441 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 179 selfloop transitions, 115 changer transitions 107/409 dead transitions. [2024-11-07 11:26:00,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 409 transitions, 3739 flow [2024-11-07 11:26:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 11:26:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-07 11:26:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 345 transitions. [2024-11-07 11:26:00,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-07 11:26:00,443 INFO L175 Difference]: Start difference. First operand has 82 places, 99 transitions, 819 flow. Second operand 15 states and 345 transitions. [2024-11-07 11:26:00,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 409 transitions, 3739 flow [2024-11-07 11:26:00,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 409 transitions, 3617 flow, removed 61 selfloop flow, removed 0 redundant places. [2024-11-07 11:26:00,758 INFO L231 Difference]: Finished difference. Result has 106 places, 173 transitions, 2097 flow [2024-11-07 11:26:00,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2097, PETRI_PLACES=106, PETRI_TRANSITIONS=173} [2024-11-07 11:26:00,758 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 68 predicate places. [2024-11-07 11:26:00,759 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 173 transitions, 2097 flow [2024-11-07 11:26:00,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:26:00,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:26:00,759 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:26:00,771 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 11:26:00,963 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,SelfDestructingSolverStorable9 [2024-11-07 11:26:00,963 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:26:00,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:26:00,964 INFO L85 PathProgramCache]: Analyzing trace with hash 129412852, now seen corresponding path program 7 times [2024-11-07 11:26:00,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:26:00,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962451462] [2024-11-07 11:26:00,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:00,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:26:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 11:26:01,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:26:01,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962451462] [2024-11-07 11:26:01,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962451462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:26:01,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607730267] [2024-11-07 11:26:01,031 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:26:01,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:01,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:26:01,034 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 11:26:01,035 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 11:26:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:01,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:26:01,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:26:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:26:01,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:26:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 11:26:01,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607730267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:26:01,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:26:01,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2024-11-07 11:26:01,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949391848] [2024-11-07 11:26:01,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:26:01,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:26:01,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:26:01,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:26:01,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:26:01,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-07 11:26:01,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 173 transitions, 2097 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:26:01,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:26:01,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-07 11:26:01,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:26:05,387 INFO L124 PetriNetUnfolderBase]: 30678/48741 cut-off events. [2024-11-07 11:26:05,388 INFO L125 PetriNetUnfolderBase]: For 270118/271658 co-relation queries the response was YES. [2024-11-07 11:26:05,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202196 conditions, 48741 events. 30678/48741 cut-off events. For 270118/271658 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 358692 event pairs, 11293 based on Foata normal form. 1216/42964 useless extension candidates. Maximal degree in co-relation 199353. Up to 14568 conditions per place. [2024-11-07 11:26:05,703 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 328 selfloop transitions, 56 changer transitions 2/413 dead transitions. [2024-11-07 11:26:05,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 413 transitions, 5713 flow [2024-11-07 11:26:05,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:26:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:26:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-07 11:26:05,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2024-11-07 11:26:05,705 INFO L175 Difference]: Start difference. First operand has 106 places, 173 transitions, 2097 flow. Second operand 5 states and 146 transitions. [2024-11-07 11:26:05,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 413 transitions, 5713 flow [2024-11-07 11:26:06,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 413 transitions, 5511 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-11-07 11:26:06,770 INFO L231 Difference]: Finished difference. Result has 105 places, 202 transitions, 2546 flow [2024-11-07 11:26:06,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2546, PETRI_PLACES=105, PETRI_TRANSITIONS=202} [2024-11-07 11:26:06,770 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 67 predicate places. [2024-11-07 11:26:06,770 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 202 transitions, 2546 flow [2024-11-07 11:26:06,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:26:06,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:26:06,771 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:26:06,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 11:26:06,971 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,SelfDestructingSolverStorable10 [2024-11-07 11:26:06,971 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:26:06,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:26:06,971 INFO L85 PathProgramCache]: Analyzing trace with hash -398154300, now seen corresponding path program 2 times [2024-11-07 11:26:06,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:26:06,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016392476] [2024-11-07 11:26:06,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:06,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:26:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 11:26:07,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:26:07,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016392476] [2024-11-07 11:26:07,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016392476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:26:07,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458590063] [2024-11-07 11:26:07,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:26:07,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:07,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:26:07,044 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 11:26:07,045 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 11:26:07,097 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:26:07,097 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:26:07,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:26:07,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:26:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:26:07,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:26:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 11:26:07,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458590063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:26:07,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:26:07,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2024-11-07 11:26:07,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757310514] [2024-11-07 11:26:07,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:26:07,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:26:07,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:26:07,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:26:07,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:26:07,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-07 11:26:07,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 202 transitions, 2546 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:26:07,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:26:07,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-07 11:26:07,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:26:15,531 INFO L124 PetriNetUnfolderBase]: 60101/95442 cut-off events. [2024-11-07 11:26:15,531 INFO L125 PetriNetUnfolderBase]: For 596984/600881 co-relation queries the response was YES. [2024-11-07 11:26:16,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398664 conditions, 95442 events. 60101/95442 cut-off events. For 596984/600881 co-relation queries the response was YES. Maximal size of possible extension queue 2215. Compared 773987 event pairs, 21018 based on Foata normal form. 2706/84685 useless extension candidates. Maximal degree in co-relation 395914. Up to 26023 conditions per place. [2024-11-07 11:26:16,359 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 346 selfloop transitions, 106 changer transitions 0/479 dead transitions. [2024-11-07 11:26:16,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 479 transitions, 7028 flow [2024-11-07 11:26:16,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:26:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:26:16,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-11-07 11:26:16,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-11-07 11:26:16,360 INFO L175 Difference]: Start difference. First operand has 105 places, 202 transitions, 2546 flow. Second operand 5 states and 140 transitions. [2024-11-07 11:26:16,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 479 transitions, 7028 flow [2024-11-07 11:26:17,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 479 transitions, 6498 flow, removed 237 selfloop flow, removed 1 redundant places. [2024-11-07 11:26:17,762 INFO L231 Difference]: Finished difference. Result has 111 places, 260 transitions, 3697 flow [2024-11-07 11:26:17,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3697, PETRI_PLACES=111, PETRI_TRANSITIONS=260} [2024-11-07 11:26:17,762 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 73 predicate places. [2024-11-07 11:26:17,762 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 260 transitions, 3697 flow [2024-11-07 11:26:17,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:26:17,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:26:17,763 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:26:17,776 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 11:26:17,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:17,963 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:26:17,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:26:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash 365706584, now seen corresponding path program 1 times [2024-11-07 11:26:17,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:26:17,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7535784] [2024-11-07 11:26:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:17,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:26:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:26:18,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:26:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7535784] [2024-11-07 11:26:18,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7535784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:26:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693258970] [2024-11-07 11:26:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:18,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:18,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:26:18,147 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 11:26:18,148 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 11:26:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:18,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:26:18,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:26:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:26:18,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:26:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:26:18,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693258970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:26:18,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:26:18,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 16 [2024-11-07 11:26:18,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574159744] [2024-11-07 11:26:18,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:26:18,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 11:26:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:26:18,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 11:26:18,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-07 11:26:18,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-07 11:26:18,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 260 transitions, 3697 flow. Second operand has 17 states, 17 states have (on average 12.294117647058824) internal successors, (209), 17 states have internal predecessors, (209), 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 11:26:18,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:26:18,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-07 11:26:18,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand