./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-2.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-2.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', 'c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf'] 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-2.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 c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:25:33,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:25:33,894 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:25:33,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:25:33,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:25:33,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:25:33,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:25:33,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:25:33,923 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:25:33,924 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:25:33,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:25:33,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:25:33,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:25:33,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:25:33,925 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:25:33,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:25:33,925 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:25:33,925 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:25:33,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:25:33,925 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:25:33,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:25:33,926 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:25:33,926 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:25:33,926 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:25:33,926 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:25:33,926 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:25:33,926 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:25:33,926 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:25:33,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:25:33,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:25:33,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:25:33,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:25:33,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:25:33,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:25:33,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:25:33,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:25:33,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:25:33,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:25:33,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:25:33,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:25:33,927 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:25:33,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:25:33,928 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 -> c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf [2024-11-07 11:25:34,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:25:34,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:25:34,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:25:34,218 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:25:34,218 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:25:34,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-11-07 11:25:35,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:25:35,826 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:25:35,827 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-11-07 11:25:35,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c467a9eff/5ab39bd92f6b4dcf9251ef2c50e6cd26/FLAG42ac35e8c [2024-11-07 11:25:36,166 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c467a9eff/5ab39bd92f6b4dcf9251ef2c50e6cd26 [2024-11-07 11:25:36,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:25:36,170 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:25:36,171 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:25:36,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:25:36,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:25:36,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1538e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36, skipping insertion in model container [2024-11-07 11:25:36,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,197 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:25:36,362 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-2.wvr.c[2249,2262] [2024-11-07 11:25:36,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:25:36,376 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:25:36,393 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-2.wvr.c[2249,2262] [2024-11-07 11:25:36,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:25:36,408 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:25:36,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36 WrapperNode [2024-11-07 11:25:36,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:25:36,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:25:36,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:25:36,410 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:25:36,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,439 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2024-11-07 11:25:36,440 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:25:36,441 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:25:36,441 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:25:36,441 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:25:36,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,469 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 11:25:36,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:25:36,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:25:36,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:25:36,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:25:36,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (1/1) ... [2024-11-07 11:25:36,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:25:36,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:36,514 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 11:25:36,520 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 11:25:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:25:36,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:25:36,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:25:36,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:25:36,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:25:36,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:25:36,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:25:36,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:25:36,541 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 11:25:36,620 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:25:36,621 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:25:36,831 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:25:36,831 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:25:36,990 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:25:36,990 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 11:25:36,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:25:36 BoogieIcfgContainer [2024-11-07 11:25:36,991 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:25:36,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:25:36,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:25:37,000 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:25:37,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:25:36" (1/3) ... [2024-11-07 11:25:37,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a6b3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:25:37, skipping insertion in model container [2024-11-07 11:25:37,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:25:36" (2/3) ... [2024-11-07 11:25:37,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a6b3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:25:37, skipping insertion in model container [2024-11-07 11:25:37,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:25:36" (3/3) ... [2024-11-07 11:25:37,003 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2024-11-07 11:25:37,039 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:25:37,039 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:25:37,039 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:25:37,089 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:25:37,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 32 transitions, 78 flow [2024-11-07 11:25:37,151 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-07 11:25:37,153 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:25:37,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 4/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 55 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-07 11:25:37,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 32 transitions, 78 flow [2024-11-07 11:25:37,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 29 transitions, 70 flow [2024-11-07 11:25:37,174 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:25:37,189 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;@725a85de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:25:37,190 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:25:37,206 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:25:37,207 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-07 11:25:37,207 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:25:37,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:37,208 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:37,208 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:37,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:37,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1272295163, now seen corresponding path program 1 times [2024-11-07 11:25:37,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:37,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413211877] [2024-11-07 11:25:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:37,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:37,546 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 11:25:37,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:37,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413211877] [2024-11-07 11:25:37,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413211877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:37,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:37,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:25:37,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306847163] [2024-11-07 11:25:37,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:37,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:25:37,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:37,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:25:37,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:25:37,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-07 11:25:37,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 11:25:37,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:37,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-07 11:25:37,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:37,735 INFO L124 PetriNetUnfolderBase]: 146/286 cut-off events. [2024-11-07 11:25:37,737 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-07 11:25:37,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 286 events. 146/286 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1137 event pairs, 12 based on Foata normal form. 1/254 useless extension candidates. Maximal degree in co-relation 458. Up to 186 conditions per place. [2024-11-07 11:25:37,744 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 21 selfloop transitions, 7 changer transitions 1/40 dead transitions. [2024-11-07 11:25:37,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 159 flow [2024-11-07 11:25:37,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:25:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:25:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-07 11:25:37,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-07 11:25:37,758 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 70 flow. Second operand 3 states and 69 transitions. [2024-11-07 11:25:37,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 159 flow [2024-11-07 11:25:37,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 145 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:25:37,767 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 101 flow [2024-11-07 11:25:37,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2024-11-07 11:25:37,774 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-11-07 11:25:37,774 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 101 flow [2024-11-07 11:25:37,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 11:25:37,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:37,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:37,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:25:37,776 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:37,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:37,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2086242437, now seen corresponding path program 1 times [2024-11-07 11:25:37,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:37,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954253632] [2024-11-07 11:25:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:37,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:38,036 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 11:25:38,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:38,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954253632] [2024-11-07 11:25:38,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954253632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:38,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:38,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:25:38,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322850704] [2024-11-07 11:25:38,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:38,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:25:38,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:38,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:25:38,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:25:38,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 11:25:38,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 11:25:38,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:38,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 11:25:38,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:38,233 INFO L124 PetriNetUnfolderBase]: 191/376 cut-off events. [2024-11-07 11:25:38,234 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-07 11:25:38,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 376 events. 191/376 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1753 event pairs, 20 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 276. Up to 143 conditions per place. [2024-11-07 11:25:38,240 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 10 changer transitions 5/65 dead transitions. [2024-11-07 11:25:38,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 65 transitions, 290 flow [2024-11-07 11:25:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:25:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:25:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-07 11:25:38,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7375 [2024-11-07 11:25:38,243 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 101 flow. Second operand 5 states and 118 transitions. [2024-11-07 11:25:38,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 65 transitions, 290 flow [2024-11-07 11:25:38,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 65 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:25:38,245 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 155 flow [2024-11-07 11:25:38,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2024-11-07 11:25:38,246 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2024-11-07 11:25:38,246 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 155 flow [2024-11-07 11:25:38,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 11:25:38,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:38,247 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:38,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:25:38,247 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:38,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:38,248 INFO L85 PathProgramCache]: Analyzing trace with hash 414343881, now seen corresponding path program 2 times [2024-11-07 11:25:38,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:38,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840931792] [2024-11-07 11:25:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:38,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:38,434 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 11:25:38,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:38,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840931792] [2024-11-07 11:25:38,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840931792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:38,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:38,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:25:38,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997545493] [2024-11-07 11:25:38,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:38,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:25:38,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:38,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:25:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:25:38,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 11:25:38,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 11:25:38,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:38,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 11:25:38,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:38,596 INFO L124 PetriNetUnfolderBase]: 185/391 cut-off events. [2024-11-07 11:25:38,596 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2024-11-07 11:25:38,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 391 events. 185/391 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1863 event pairs, 12 based on Foata normal form. 8/367 useless extension candidates. Maximal degree in co-relation 345. Up to 88 conditions per place. [2024-11-07 11:25:38,603 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 12 changer transitions 4/65 dead transitions. [2024-11-07 11:25:38,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 348 flow [2024-11-07 11:25:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:25:38,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:25:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-07 11:25:38,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-07 11:25:38,607 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 155 flow. Second operand 5 states and 115 transitions. [2024-11-07 11:25:38,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 348 flow [2024-11-07 11:25:38,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:25:38,611 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 241 flow [2024-11-07 11:25:38,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-11-07 11:25:38,613 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2024-11-07 11:25:38,613 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 241 flow [2024-11-07 11:25:38,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 11:25:38,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:38,614 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 11:25:38,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:25:38,614 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:38,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash -844618454, now seen corresponding path program 1 times [2024-11-07 11:25:38,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:38,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210957492] [2024-11-07 11:25:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:38,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:38,736 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 11:25:38,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:38,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210957492] [2024-11-07 11:25:38,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210957492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:38,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:38,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:25:38,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023697876] [2024-11-07 11:25:38,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:38,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:25:38,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:38,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:25:38,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:25:38,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 11:25:38,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:38,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:38,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 11:25:38,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:38,890 INFO L124 PetriNetUnfolderBase]: 182/379 cut-off events. [2024-11-07 11:25:38,892 INFO L125 PetriNetUnfolderBase]: For 588/588 co-relation queries the response was YES. [2024-11-07 11:25:38,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 379 events. 182/379 cut-off events. For 588/588 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1837 event pairs, 17 based on Foata normal form. 2/347 useless extension candidates. Maximal degree in co-relation 572. Up to 163 conditions per place. [2024-11-07 11:25:38,896 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 9 changer transitions 2/66 dead transitions. [2024-11-07 11:25:38,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 436 flow [2024-11-07 11:25:38,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:25:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:25:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-11-07 11:25:38,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-07 11:25:38,900 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 241 flow. Second operand 5 states and 112 transitions. [2024-11-07 11:25:38,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 436 flow [2024-11-07 11:25:38,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 432 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-07 11:25:38,905 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 292 flow [2024-11-07 11:25:38,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-07 11:25:38,906 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2024-11-07 11:25:38,906 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 292 flow [2024-11-07 11:25:38,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:38,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:38,906 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 11:25:38,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:25:38,908 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:38,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:38,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1900226788, now seen corresponding path program 2 times [2024-11-07 11:25:38,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:38,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604134143] [2024-11-07 11:25:38,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:38,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:39,042 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 11:25:39,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:39,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604134143] [2024-11-07 11:25:39,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604134143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:39,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:39,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:25:39,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850974801] [2024-11-07 11:25:39,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:39,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:25:39,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:39,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:25:39,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:25:39,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 11:25:39,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:39,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:39,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 11:25:39,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:39,192 INFO L124 PetriNetUnfolderBase]: 168/379 cut-off events. [2024-11-07 11:25:39,192 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-11-07 11:25:39,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 379 events. 168/379 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1730 event pairs, 6 based on Foata normal form. 17/361 useless extension candidates. Maximal degree in co-relation 751. Up to 99 conditions per place. [2024-11-07 11:25:39,196 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 43 selfloop transitions, 12 changer transitions 1/70 dead transitions. [2024-11-07 11:25:39,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 512 flow [2024-11-07 11:25:39,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:25:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:25:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-07 11:25:39,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-11-07 11:25:39,198 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 292 flow. Second operand 5 states and 113 transitions. [2024-11-07 11:25:39,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 512 flow [2024-11-07 11:25:39,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 496 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 11:25:39,205 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 355 flow [2024-11-07 11:25:39,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-07 11:25:39,206 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-11-07 11:25:39,206 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 355 flow [2024-11-07 11:25:39,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:39,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:39,206 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 11:25:39,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:25:39,207 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:39,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:39,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1926277624, now seen corresponding path program 1 times [2024-11-07 11:25:39,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:39,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005595166] [2024-11-07 11:25:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:39,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:39,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:39,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005595166] [2024-11-07 11:25:39,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005595166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:39,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13170494] [2024-11-07 11:25:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:39,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:39,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:39,533 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 11:25:39,535 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 11:25:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:39,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 11:25:39,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:39,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:40,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13170494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:40,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:40,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-07 11:25:40,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554872821] [2024-11-07 11:25:40,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:40,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:25:40,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:40,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:25:40,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-07 11:25:40,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-07 11:25:40,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 355 flow. Second operand has 12 states, 12 states have (on average 14.833333333333334) internal successors, (178), 12 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 11:25:40,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:40,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-07 11:25:40,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:40,945 INFO L124 PetriNetUnfolderBase]: 459/907 cut-off events. [2024-11-07 11:25:40,946 INFO L125 PetriNetUnfolderBase]: For 2614/2614 co-relation queries the response was YES. [2024-11-07 11:25:40,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3200 conditions, 907 events. 459/907 cut-off events. For 2614/2614 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4403 event pairs, 4 based on Foata normal form. 46/883 useless extension candidates. Maximal degree in co-relation 1278. Up to 254 conditions per place. [2024-11-07 11:25:40,954 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 105 selfloop transitions, 51 changer transitions 0/165 dead transitions. [2024-11-07 11:25:40,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 165 transitions, 1356 flow [2024-11-07 11:25:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 11:25:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 11:25:40,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 355 transitions. [2024-11-07 11:25:40,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5838815789473685 [2024-11-07 11:25:40,957 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 355 flow. Second operand 19 states and 355 transitions. [2024-11-07 11:25:40,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 165 transitions, 1356 flow [2024-11-07 11:25:40,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 165 transitions, 1317 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-07 11:25:40,980 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 848 flow [2024-11-07 11:25:40,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=848, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-11-07 11:25:40,981 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2024-11-07 11:25:40,981 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 848 flow [2024-11-07 11:25:40,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.833333333333334) internal successors, (178), 12 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 11:25:40,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:40,983 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:41,001 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 11:25:41,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:41,184 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:41,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:41,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1028412545, now seen corresponding path program 2 times [2024-11-07 11:25:41,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:41,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858131768] [2024-11-07 11:25:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:41,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:25:41,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:41,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858131768] [2024-11-07 11:25:41,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858131768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:41,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:41,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:25:41,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833552452] [2024-11-07 11:25:41,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:41,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:25:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:41,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:25:41,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:25:41,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 11:25:41,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 848 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 11:25:41,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:41,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 11:25:41,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:41,601 INFO L124 PetriNetUnfolderBase]: 591/1365 cut-off events. [2024-11-07 11:25:41,602 INFO L125 PetriNetUnfolderBase]: For 7454/7546 co-relation queries the response was YES. [2024-11-07 11:25:41,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5644 conditions, 1365 events. 591/1365 cut-off events. For 7454/7546 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8517 event pairs, 141 based on Foata normal form. 16/1209 useless extension candidates. Maximal degree in co-relation 4945. Up to 299 conditions per place. [2024-11-07 11:25:41,615 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 108 selfloop transitions, 21 changer transitions 0/161 dead transitions. [2024-11-07 11:25:41,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 161 transitions, 1994 flow [2024-11-07 11:25:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:25:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:25:41,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-07 11:25:41,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-11-07 11:25:41,617 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 848 flow. Second operand 4 states and 98 transitions. [2024-11-07 11:25:41,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 161 transitions, 1994 flow [2024-11-07 11:25:41,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 161 transitions, 1855 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-11-07 11:25:41,641 INFO L231 Difference]: Finished difference. Result has 86 places, 102 transitions, 1108 flow [2024-11-07 11:25:41,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1108, PETRI_PLACES=86, PETRI_TRANSITIONS=102} [2024-11-07 11:25:41,643 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2024-11-07 11:25:41,644 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 102 transitions, 1108 flow [2024-11-07 11:25:41,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 11:25:41,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:41,644 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-07 11:25:41,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 11:25:41,645 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:41,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:41,645 INFO L85 PathProgramCache]: Analyzing trace with hash -212638674, now seen corresponding path program 1 times [2024-11-07 11:25:41,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:41,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127029507] [2024-11-07 11:25:41,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:41,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:41,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:41,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:41,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127029507] [2024-11-07 11:25:41,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127029507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:41,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:41,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:25:41,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993564748] [2024-11-07 11:25:41,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:41,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:25:41,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:41,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:25:41,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:25:41,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 11:25:41,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 102 transitions, 1108 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 11:25:41,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:41,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 11:25:41,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:42,352 INFO L124 PetriNetUnfolderBase]: 1681/3415 cut-off events. [2024-11-07 11:25:42,352 INFO L125 PetriNetUnfolderBase]: For 19688/19735 co-relation queries the response was YES. [2024-11-07 11:25:42,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14658 conditions, 3415 events. 1681/3415 cut-off events. For 19688/19735 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25593 event pairs, 412 based on Foata normal form. 3/3050 useless extension candidates. Maximal degree in co-relation 12642. Up to 1045 conditions per place. [2024-11-07 11:25:42,384 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 149 selfloop transitions, 32 changer transitions 0/214 dead transitions. [2024-11-07 11:25:42,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 214 transitions, 2862 flow [2024-11-07 11:25:42,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:25:42,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:25:42,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-07 11:25:42,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7578125 [2024-11-07 11:25:42,388 INFO L175 Difference]: Start difference. First operand has 86 places, 102 transitions, 1108 flow. Second operand 4 states and 97 transitions. [2024-11-07 11:25:42,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 214 transitions, 2862 flow [2024-11-07 11:25:42,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 214 transitions, 2849 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-07 11:25:42,441 INFO L231 Difference]: Finished difference. Result has 91 places, 132 transitions, 1614 flow [2024-11-07 11:25:42,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1614, PETRI_PLACES=91, PETRI_TRANSITIONS=132} [2024-11-07 11:25:42,444 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-11-07 11:25:42,444 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 132 transitions, 1614 flow [2024-11-07 11:25:42,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 11:25:42,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:42,448 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:42,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 11:25:42,448 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:42,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1003239952, now seen corresponding path program 1 times [2024-11-07 11:25:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:42,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809783420] [2024-11-07 11:25:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:42,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:42,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:42,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809783420] [2024-11-07 11:25:42,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809783420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:42,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302880703] [2024-11-07 11:25:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:42,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:42,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:42,698 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 11:25:42,700 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 11:25:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:42,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 11:25:42,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:42,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:42,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302880703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:42,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:42,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-07 11:25:42,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087944733] [2024-11-07 11:25:42,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:42,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:25:42,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:42,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:25:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:25:42,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-07 11:25:42,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 132 transitions, 1614 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:42,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:42,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-07 11:25:42,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:44,344 INFO L124 PetriNetUnfolderBase]: 3484/7695 cut-off events. [2024-11-07 11:25:44,345 INFO L125 PetriNetUnfolderBase]: For 52551/52682 co-relation queries the response was YES. [2024-11-07 11:25:44,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36198 conditions, 7695 events. 3484/7695 cut-off events. For 52551/52682 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 66159 event pairs, 462 based on Foata normal form. 29/7528 useless extension candidates. Maximal degree in co-relation 30662. Up to 2546 conditions per place. [2024-11-07 11:25:44,424 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 323 selfloop transitions, 23 changer transitions 1/378 dead transitions. [2024-11-07 11:25:44,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 378 transitions, 5534 flow [2024-11-07 11:25:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:25:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:25:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-11-07 11:25:44,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2024-11-07 11:25:44,426 INFO L175 Difference]: Start difference. First operand has 91 places, 132 transitions, 1614 flow. Second operand 6 states and 152 transitions. [2024-11-07 11:25:44,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 378 transitions, 5534 flow [2024-11-07 11:25:44,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 378 transitions, 5534 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:25:44,566 INFO L231 Difference]: Finished difference. Result has 97 places, 148 transitions, 1748 flow [2024-11-07 11:25:44,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1748, PETRI_PLACES=97, PETRI_TRANSITIONS=148} [2024-11-07 11:25:44,567 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2024-11-07 11:25:44,567 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 148 transitions, 1748 flow [2024-11-07 11:25:44,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:44,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:44,568 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-07 11:25:44,586 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 11:25:44,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:44,769 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:44,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1867921802, now seen corresponding path program 1 times [2024-11-07 11:25:44,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:44,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975604847] [2024-11-07 11:25:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:44,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:44,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:44,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975604847] [2024-11-07 11:25:44,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975604847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:44,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:44,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:25:44,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681861294] [2024-11-07 11:25:44,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:44,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:25:44,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:44,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:25:44,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:25:44,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 11:25:44,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 148 transitions, 1748 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 11:25:44,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:44,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 11:25:44,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:46,078 INFO L124 PetriNetUnfolderBase]: 3430/7467 cut-off events. [2024-11-07 11:25:46,078 INFO L125 PetriNetUnfolderBase]: For 57199/57274 co-relation queries the response was YES. [2024-11-07 11:25:46,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36503 conditions, 7467 events. 3430/7467 cut-off events. For 57199/57274 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 63994 event pairs, 665 based on Foata normal form. 109/7298 useless extension candidates. Maximal degree in co-relation 31108. Up to 2436 conditions per place. [2024-11-07 11:25:46,177 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 136 selfloop transitions, 32 changer transitions 0/209 dead transitions. [2024-11-07 11:25:46,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 209 transitions, 2726 flow [2024-11-07 11:25:46,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:25:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:25:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-07 11:25:46,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2024-11-07 11:25:46,180 INFO L175 Difference]: Start difference. First operand has 97 places, 148 transitions, 1748 flow. Second operand 4 states and 93 transitions. [2024-11-07 11:25:46,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 209 transitions, 2726 flow [2024-11-07 11:25:46,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 209 transitions, 2662 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-11-07 11:25:46,446 INFO L231 Difference]: Finished difference. Result has 102 places, 137 transitions, 1656 flow [2024-11-07 11:25:46,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1656, PETRI_PLACES=102, PETRI_TRANSITIONS=137} [2024-11-07 11:25:46,448 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 70 predicate places. [2024-11-07 11:25:46,448 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 137 transitions, 1656 flow [2024-11-07 11:25:46,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 11:25:46,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:46,449 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:46,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 11:25:46,449 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:46,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:46,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1589292896, now seen corresponding path program 2 times [2024-11-07 11:25:46,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:46,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124099858] [2024-11-07 11:25:46,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:46,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:46,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124099858] [2024-11-07 11:25:46,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124099858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224175042] [2024-11-07 11:25:46,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:25:46,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:46,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:46,654 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 11:25:46,655 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 11:25:46,722 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:25:46,723 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:46,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 11:25:46,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:46,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:46,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224175042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:46,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:46,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-07 11:25:46,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798058293] [2024-11-07 11:25:46,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:46,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:25:46,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:46,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:25:46,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:25:46,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-07 11:25:46,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 137 transitions, 1656 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:46,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:46,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-07 11:25:46,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:48,173 INFO L124 PetriNetUnfolderBase]: 3846/8771 cut-off events. [2024-11-07 11:25:48,173 INFO L125 PetriNetUnfolderBase]: For 72599/72734 co-relation queries the response was YES. [2024-11-07 11:25:48,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44445 conditions, 8771 events. 3846/8771 cut-off events. For 72599/72734 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 79159 event pairs, 528 based on Foata normal form. 41/8652 useless extension candidates. Maximal degree in co-relation 37809. Up to 4682 conditions per place. [2024-11-07 11:25:48,235 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 265 selfloop transitions, 26 changer transitions 1/324 dead transitions. [2024-11-07 11:25:48,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 324 transitions, 4766 flow [2024-11-07 11:25:48,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:25:48,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:25:48,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-07 11:25:48,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7552083333333334 [2024-11-07 11:25:48,236 INFO L175 Difference]: Start difference. First operand has 102 places, 137 transitions, 1656 flow. Second operand 6 states and 145 transitions. [2024-11-07 11:25:48,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 324 transitions, 4766 flow [2024-11-07 11:25:48,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 324 transitions, 4766 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:25:48,439 INFO L231 Difference]: Finished difference. Result has 109 places, 155 transitions, 1839 flow [2024-11-07 11:25:48,439 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1839, PETRI_PLACES=109, PETRI_TRANSITIONS=155} [2024-11-07 11:25:48,440 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 77 predicate places. [2024-11-07 11:25:48,441 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 155 transitions, 1839 flow [2024-11-07 11:25:48,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:48,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:48,442 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:48,458 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 11:25:48,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:48,643 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:48,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:48,643 INFO L85 PathProgramCache]: Analyzing trace with hash 614024238, now seen corresponding path program 3 times [2024-11-07 11:25:48,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:48,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852806585] [2024-11-07 11:25:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:48,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:25:48,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852806585] [2024-11-07 11:25:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852806585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590936904] [2024-11-07 11:25:48,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:25:48,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:48,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:48,827 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 11:25:48,829 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 11:25:48,900 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-07 11:25:48,900 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:48,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 11:25:48,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:25:48,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:25:49,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590936904] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:49,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:49,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-07 11:25:49,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721148473] [2024-11-07 11:25:49,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:49,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:25:49,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:49,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:25:49,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:25:49,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-07 11:25:49,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 155 transitions, 1839 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:49,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:49,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-07 11:25:49,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:50,824 INFO L124 PetriNetUnfolderBase]: 5647/12740 cut-off events. [2024-11-07 11:25:50,824 INFO L125 PetriNetUnfolderBase]: For 112404/112684 co-relation queries the response was YES. [2024-11-07 11:25:50,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67363 conditions, 12740 events. 5647/12740 cut-off events. For 112404/112684 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 119962 event pairs, 758 based on Foata normal form. 80/12527 useless extension candidates. Maximal degree in co-relation 57651. Up to 4975 conditions per place. [2024-11-07 11:25:50,922 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 311 selfloop transitions, 48 changer transitions 1/392 dead transitions. [2024-11-07 11:25:50,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 392 transitions, 5811 flow [2024-11-07 11:25:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:25:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:25:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-11-07 11:25:50,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7760416666666666 [2024-11-07 11:25:50,923 INFO L175 Difference]: Start difference. First operand has 109 places, 155 transitions, 1839 flow. Second operand 6 states and 149 transitions. [2024-11-07 11:25:50,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 392 transitions, 5811 flow [2024-11-07 11:25:51,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 392 transitions, 5797 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-11-07 11:25:51,239 INFO L231 Difference]: Finished difference. Result has 118 places, 183 transitions, 2218 flow [2024-11-07 11:25:51,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2218, PETRI_PLACES=118, PETRI_TRANSITIONS=183} [2024-11-07 11:25:51,240 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 86 predicate places. [2024-11-07 11:25:51,240 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 183 transitions, 2218 flow [2024-11-07 11:25:51,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:51,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:51,241 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:51,255 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 11:25:51,445 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,SelfDestructingSolverStorable11 [2024-11-07 11:25:51,446 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:51,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:51,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1719315824, now seen corresponding path program 4 times [2024-11-07 11:25:51,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:51,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338153322] [2024-11-07 11:25:51,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:51,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:51,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:51,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:51,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338153322] [2024-11-07 11:25:51,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338153322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:51,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976785890] [2024-11-07 11:25:51,625 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:25:51,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:51,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:51,627 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 11:25:51,629 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 11:25:51,695 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:25:51,695 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:51,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 11:25:51,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:51,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:25:51,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976785890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:51,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:51,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-07 11:25:51,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473772645] [2024-11-07 11:25:51,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:51,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:25:51,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:51,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:25:51,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:25:51,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-07 11:25:51,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 183 transitions, 2218 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:51,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:51,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-07 11:25:51,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:54,122 INFO L124 PetriNetUnfolderBase]: 7967/18199 cut-off events. [2024-11-07 11:25:54,123 INFO L125 PetriNetUnfolderBase]: For 170639/171254 co-relation queries the response was YES. [2024-11-07 11:25:54,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99929 conditions, 18199 events. 7967/18199 cut-off events. For 170639/171254 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 180916 event pairs, 918 based on Foata normal form. 136/18067 useless extension candidates. Maximal degree in co-relation 84496. Up to 8503 conditions per place. [2024-11-07 11:25:54,276 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 374 selfloop transitions, 38 changer transitions 1/445 dead transitions. [2024-11-07 11:25:54,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 445 transitions, 6700 flow [2024-11-07 11:25:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:25:54,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:25:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-11-07 11:25:54,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2024-11-07 11:25:54,278 INFO L175 Difference]: Start difference. First operand has 118 places, 183 transitions, 2218 flow. Second operand 6 states and 152 transitions. [2024-11-07 11:25:54,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 445 transitions, 6700 flow [2024-11-07 11:25:54,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 445 transitions, 6676 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-11-07 11:25:54,874 INFO L231 Difference]: Finished difference. Result has 126 places, 214 transitions, 2614 flow [2024-11-07 11:25:54,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2614, PETRI_PLACES=126, PETRI_TRANSITIONS=214} [2024-11-07 11:25:54,875 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2024-11-07 11:25:54,875 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 214 transitions, 2614 flow [2024-11-07 11:25:54,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:25:54,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:54,875 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:25:54,887 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 11:25:55,075 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,SelfDestructingSolverStorable12 [2024-11-07 11:25:55,076 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:55,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:55,076 INFO L85 PathProgramCache]: Analyzing trace with hash 651385897, now seen corresponding path program 1 times [2024-11-07 11:25:55,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:55,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509815410] [2024-11-07 11:25:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:55,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:25:55,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:55,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509815410] [2024-11-07 11:25:55,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509815410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:25:55,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:25:55,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:25:55,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063599155] [2024-11-07 11:25:55,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:55,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:25:55,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:25:55,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:25:55,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 11:25:55,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 214 transitions, 2614 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 11:25:55,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:55,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 11:25:55,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:56,212 INFO L124 PetriNetUnfolderBase]: 3162/7466 cut-off events. [2024-11-07 11:25:56,212 INFO L125 PetriNetUnfolderBase]: For 84945/85689 co-relation queries the response was YES. [2024-11-07 11:25:56,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43200 conditions, 7466 events. 3162/7466 cut-off events. For 84945/85689 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 66994 event pairs, 401 based on Foata normal form. 256/7543 useless extension candidates. Maximal degree in co-relation 38075. Up to 2305 conditions per place. [2024-11-07 11:25:56,268 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 160 selfloop transitions, 21 changer transitions 0/249 dead transitions. [2024-11-07 11:25:56,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 249 transitions, 3598 flow [2024-11-07 11:25:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:25:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:25:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-07 11:25:56,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2024-11-07 11:25:56,269 INFO L175 Difference]: Start difference. First operand has 126 places, 214 transitions, 2614 flow. Second operand 4 states and 93 transitions. [2024-11-07 11:25:56,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 249 transitions, 3598 flow [2024-11-07 11:25:56,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 249 transitions, 3564 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-07 11:25:56,415 INFO L231 Difference]: Finished difference. Result has 130 places, 186 transitions, 2357 flow [2024-11-07 11:25:56,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2357, PETRI_PLACES=130, PETRI_TRANSITIONS=186} [2024-11-07 11:25:56,416 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-11-07 11:25:56,416 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 186 transitions, 2357 flow [2024-11-07 11:25:56,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 11:25:56,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:56,416 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2024-11-07 11:25:56,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 11:25:56,416 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:25:56,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:56,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1358227114, now seen corresponding path program 5 times [2024-11-07 11:25:56,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:56,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578964000] [2024-11-07 11:25:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:56,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:56,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:56,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578964000] [2024-11-07 11:25:56,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578964000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:56,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986477693] [2024-11-07 11:25:56,716 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:25:56,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:56,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:56,719 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 11:25:56,721 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 11:25:56,839 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-07 11:25:56,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:56,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:25:56,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:57,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:57,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986477693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:25:57,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:25:57,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2024-11-07 11:25:57,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062598898] [2024-11-07 11:25:57,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:25:57,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:25:57,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:25:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:25:57,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 11:25:57,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 186 transitions, 2357 flow. Second operand has 19 states, 19 states have (on average 17.05263157894737) internal successors, (324), 19 states have internal predecessors, (324), 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 11:25:57,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:57,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 11:25:57,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:26:06,702 INFO L124 PetriNetUnfolderBase]: 7103/15946 cut-off events. [2024-11-07 11:26:06,702 INFO L125 PetriNetUnfolderBase]: For 196994/198328 co-relation queries the response was YES. [2024-11-07 11:26:06,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93429 conditions, 15946 events. 7103/15946 cut-off events. For 196994/198328 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 152976 event pairs, 32 based on Foata normal form. 1096/17015 useless extension candidates. Maximal degree in co-relation 83873. Up to 2941 conditions per place. [2024-11-07 11:26:06,804 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 640 selfloop transitions, 207 changer transitions 0/899 dead transitions. [2024-11-07 11:26:06,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 899 transitions, 12084 flow [2024-11-07 11:26:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-07 11:26:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-07 11:26:06,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 705 transitions. [2024-11-07 11:26:06,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6676136363636364 [2024-11-07 11:26:06,808 INFO L175 Difference]: Start difference. First operand has 130 places, 186 transitions, 2357 flow. Second operand 33 states and 705 transitions. [2024-11-07 11:26:06,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 899 transitions, 12084 flow [2024-11-07 11:26:07,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 899 transitions, 12084 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:26:07,147 INFO L231 Difference]: Finished difference. Result has 180 places, 356 transitions, 6108 flow [2024-11-07 11:26:07,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6108, PETRI_PLACES=180, PETRI_TRANSITIONS=356} [2024-11-07 11:26:07,148 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-11-07 11:26:07,148 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 356 transitions, 6108 flow [2024-11-07 11:26:07,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.05263157894737) internal successors, (324), 19 states have internal predecessors, (324), 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 11:26:07,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:26:07,148 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2024-11-07 11:26:07,161 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 11:26:07,349 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,SelfDestructingSolverStorable14 [2024-11-07 11:26:07,349 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:26:07,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:26:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash -349675694, now seen corresponding path program 6 times [2024-11-07 11:26:07,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:26:07,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888398771] [2024-11-07 11:26:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:07,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:26:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:07,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:26:07,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888398771] [2024-11-07 11:26:07,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888398771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:26:07,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679756565] [2024-11-07 11:26:07,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:26:07,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:07,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:26:07,879 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 11:26:07,881 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 11:26:07,991 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-07 11:26:07,991 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:26:07,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 11:26:07,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:26:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:08,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:26:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:08,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679756565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:26:08,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:26:08,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2024-11-07 11:26:08,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030752838] [2024-11-07 11:26:08,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:26:08,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:26:08,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:26:08,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:26:08,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:26:08,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-07 11:26:08,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 356 transitions, 6108 flow. Second operand has 21 states, 21 states have (on average 14.428571428571429) internal successors, (303), 21 states have internal predecessors, (303), 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 11:26:08,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:26:08,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-07 11:26:08,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:26:24,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:26:29,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:26:33,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:26:38,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:26:48,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:26:49,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:26:54,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:26:59,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:27:00,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []