./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-array-int-symm.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/chl-array-int-symm.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', '8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325'] 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/chl-array-int-symm.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 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:22:10,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:22:10,370 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:22:10,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:22:10,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:22:10,406 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:22:10,407 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:22:10,407 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:22:10,407 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:22:10,408 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:22:10,408 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:22:10,408 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:22:10,409 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:22:10,409 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:22:10,411 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:22:10,411 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:22:10,411 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:22:10,411 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:22:10,411 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:22:10,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:22:10,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:22:10,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:22:10,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:22:10,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:22:10,412 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:22:10,412 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:22:10,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:22:10,412 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:22:10,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:22:10,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:22:10,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:22:10,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:22:10,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:22:10,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:22:10,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:22:10,414 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:22:10,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:22:10,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:22:10,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:22:10,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:22:10,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:22:10,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:22:10,415 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 -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2024-11-07 11:22:10,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:22:10,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:22:10,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:22:10,678 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:22:10,680 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:22:10,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-07 11:22:11,958 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:22:12,215 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:22:12,216 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-07 11:22:12,224 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a4a07415a/a008868ea5454fa99fbcc8a883c0c1d4/FLAG368efba27 [2024-11-07 11:22:12,535 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a4a07415a/a008868ea5454fa99fbcc8a883c0c1d4 [2024-11-07 11:22:12,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:22:12,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:22:12,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:22:12,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:22:12,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:22:12,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611a9e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12, skipping insertion in model container [2024-11-07 11:22:12,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,557 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:22:12,695 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/chl-array-int-symm.wvr.c[2508,2521] [2024-11-07 11:22:12,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:22:12,711 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:22:12,733 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/chl-array-int-symm.wvr.c[2508,2521] [2024-11-07 11:22:12,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:22:12,753 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:22:12,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12 WrapperNode [2024-11-07 11:22:12,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:22:12,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:22:12,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:22:12,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:22:12,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,800 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 193 [2024-11-07 11:22:12,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:22:12,801 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:22:12,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:22:12,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:22:12,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,813 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,829 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-07 11:22:12,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,835 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,838 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:22:12,847 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:22:12,847 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:22:12,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:22:12,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (1/1) ... [2024-11-07 11:22:12,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:22:12,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:12,877 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 11:22:12,881 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 11:22:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:22:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:22:12,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:22:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:22:12,905 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:22:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:22:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:22:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:22:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:22:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:22:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:22:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:22:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:22:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:22:12,907 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 11:22:12,991 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:22:12,992 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:22:13,315 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:22:13,316 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:22:13,573 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:22:13,574 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 11:22:13,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:22:13 BoogieIcfgContainer [2024-11-07 11:22:13,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:22:13,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:22:13,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:22:13,580 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:22:13,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:22:12" (1/3) ... [2024-11-07 11:22:13,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c75df33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:22:13, skipping insertion in model container [2024-11-07 11:22:13,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:12" (2/3) ... [2024-11-07 11:22:13,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c75df33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:22:13, skipping insertion in model container [2024-11-07 11:22:13,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:22:13" (3/3) ... [2024-11-07 11:22:13,583 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2024-11-07 11:22:13,593 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:22:13,594 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:22:13,594 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:22:13,637 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:22:13,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 70 flow [2024-11-07 11:22:13,698 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-07 11:22:13,700 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:22:13,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 6/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-11-07 11:22:13,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 70 flow [2024-11-07 11:22:13,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 25 transitions, 62 flow [2024-11-07 11:22:13,717 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:22:13,730 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;@4d13e676, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:22:13,732 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:22:13,742 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:22:13,742 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2024-11-07 11:22:13,742 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:22:13,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:13,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:13,743 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 11:22:13,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:13,749 INFO L85 PathProgramCache]: Analyzing trace with hash 245197459, now seen corresponding path program 1 times [2024-11-07 11:22:13,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:13,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209202117] [2024-11-07 11:22:13,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:13,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:14,435 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 11:22:14,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:14,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209202117] [2024-11-07 11:22:14,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209202117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:14,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:14,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:22:14,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338422752] [2024-11-07 11:22:14,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:14,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:22:14,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:14,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:22:14,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:22:14,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:14,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 11:22:14,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:14,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:14,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:14,817 INFO L124 PetriNetUnfolderBase]: 288/485 cut-off events. [2024-11-07 11:22:14,817 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-07 11:22:14,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 485 events. 288/485 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1769 event pairs, 96 based on Foata normal form. 1/372 useless extension candidates. Maximal degree in co-relation 536. Up to 178 conditions per place. [2024-11-07 11:22:14,827 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 64 selfloop transitions, 10 changer transitions 1/76 dead transitions. [2024-11-07 11:22:14,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 76 transitions, 344 flow [2024-11-07 11:22:14,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 11:22:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 11:22:14,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-11-07 11:22:14,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-11-07 11:22:14,843 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 8 states and 100 transitions. [2024-11-07 11:22:14,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 76 transitions, 344 flow [2024-11-07 11:22:14,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 76 transitions, 316 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:22:14,853 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 123 flow [2024-11-07 11:22:14,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=123, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2024-11-07 11:22:14,860 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-11-07 11:22:14,860 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 123 flow [2024-11-07 11:22:14,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 11:22:14,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:14,861 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:14,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:22:14,861 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 11:22:14,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:14,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1983090722, now seen corresponding path program 1 times [2024-11-07 11:22:14,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:14,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667260677] [2024-11-07 11:22:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:14,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:22:15,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:15,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667260677] [2024-11-07 11:22:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667260677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:15,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344513336] [2024-11-07 11:22:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:15,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:15,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:15,151 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 11:22:15,153 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 11:22:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:15,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 11:22:15,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:22:15,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:15,598 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 11:22:15,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344513336] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:15,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:22:15,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2024-11-07 11:22:15,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098746408] [2024-11-07 11:22:15,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:15,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:22:15,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:15,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:22:15,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-07 11:22:15,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:15,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 123 flow. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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 11:22:15,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:15,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:15,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:15,977 INFO L124 PetriNetUnfolderBase]: 617/1023 cut-off events. [2024-11-07 11:22:15,977 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-07 11:22:15,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1023 events. 617/1023 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4490 event pairs, 279 based on Foata normal form. 1/897 useless extension candidates. Maximal degree in co-relation 1517. Up to 479 conditions per place. [2024-11-07 11:22:15,985 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 92 selfloop transitions, 12 changer transitions 1/106 dead transitions. [2024-11-07 11:22:15,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 106 transitions, 540 flow [2024-11-07 11:22:15,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 11:22:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 11:22:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-11-07 11:22:15,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-07 11:22:15,989 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 123 flow. Second operand 8 states and 119 transitions. [2024-11-07 11:22:15,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 106 transitions, 540 flow [2024-11-07 11:22:15,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 106 transitions, 536 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-07 11:22:15,993 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 210 flow [2024-11-07 11:22:15,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2024-11-07 11:22:15,994 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2024-11-07 11:22:15,994 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 210 flow [2024-11-07 11:22:15,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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 11:22:15,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:15,995 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:16,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 11:22:16,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:16,199 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 11:22:16,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:16,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1744370288, now seen corresponding path program 1 times [2024-11-07 11:22:16,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:16,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735225261] [2024-11-07 11:22:16,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:16,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:16,309 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 11:22:16,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:16,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735225261] [2024-11-07 11:22:16,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735225261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:16,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:16,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:22:16,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135559337] [2024-11-07 11:22:16,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:16,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:16,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:16,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:16,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:16,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 11:22:16,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:16,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:16,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:16,507 INFO L124 PetriNetUnfolderBase]: 487/833 cut-off events. [2024-11-07 11:22:16,507 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2024-11-07 11:22:16,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 833 events. 487/833 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3707 event pairs, 199 based on Foata normal form. 0/745 useless extension candidates. Maximal degree in co-relation 1625. Up to 539 conditions per place. [2024-11-07 11:22:16,515 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 62 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2024-11-07 11:22:16,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 447 flow [2024-11-07 11:22:16,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:22:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:22:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-11-07 11:22:16,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-11-07 11:22:16,517 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 210 flow. Second operand 6 states and 74 transitions. [2024-11-07 11:22:16,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 447 flow [2024-11-07 11:22:16,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 420 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-07 11:22:16,523 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 214 flow [2024-11-07 11:22:16,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-07 11:22:16,524 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2024-11-07 11:22:16,524 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 214 flow [2024-11-07 11:22:16,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 11:22:16,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:16,525 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:16,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:22:16,525 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 11:22:16,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:16,526 INFO L85 PathProgramCache]: Analyzing trace with hash 574455480, now seen corresponding path program 1 times [2024-11-07 11:22:16,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:16,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413129819] [2024-11-07 11:22:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:16,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:16,630 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 11:22:16,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:16,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413129819] [2024-11-07 11:22:16,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413129819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:16,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:16,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:22:16,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926817091] [2024-11-07 11:22:16,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:16,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:16,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:16,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:16,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:16,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 214 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 11:22:16,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:16,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:16,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:16,803 INFO L124 PetriNetUnfolderBase]: 416/723 cut-off events. [2024-11-07 11:22:16,803 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2024-11-07 11:22:16,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 723 events. 416/723 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3036 event pairs, 207 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 1535. Up to 539 conditions per place. [2024-11-07 11:22:16,810 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 52 selfloop transitions, 6 changer transitions 2/61 dead transitions. [2024-11-07 11:22:16,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 400 flow [2024-11-07 11:22:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:22:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:22:16,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-11-07 11:22:16,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-11-07 11:22:16,811 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 214 flow. Second operand 6 states and 67 transitions. [2024-11-07 11:22:16,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 400 flow [2024-11-07 11:22:16,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 384 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-07 11:22:16,819 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 220 flow [2024-11-07 11:22:16,819 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-11-07 11:22:16,820 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 24 predicate places. [2024-11-07 11:22:16,820 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 220 flow [2024-11-07 11:22:16,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 11:22:16,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:16,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:16,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:22:16,821 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 11:22:16,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:16,822 INFO L85 PathProgramCache]: Analyzing trace with hash 603243545, now seen corresponding path program 1 times [2024-11-07 11:22:16,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:16,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601685121] [2024-11-07 11:22:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:16,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:22:17,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:17,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601685121] [2024-11-07 11:22:17,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601685121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:17,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791309559] [2024-11-07 11:22:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:17,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:17,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:17,020 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 11:22:17,022 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 11:22:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:17,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 11:22:17,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:22:17,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:17,324 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 11:22:17,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791309559] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:17,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:22:17,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2024-11-07 11:22:17,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526384255] [2024-11-07 11:22:17,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:17,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:22:17,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:17,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:22:17,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:22:17,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:17,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 11:22:17,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:17,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:17,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:17,585 INFO L124 PetriNetUnfolderBase]: 391/674 cut-off events. [2024-11-07 11:22:17,586 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-11-07 11:22:17,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1792 conditions, 674 events. 391/674 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2835 event pairs, 192 based on Foata normal form. 1/673 useless extension candidates. Maximal degree in co-relation 1757. Up to 539 conditions per place. [2024-11-07 11:22:17,592 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 50 selfloop transitions, 5 changer transitions 11/67 dead transitions. [2024-11-07 11:22:17,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 421 flow [2024-11-07 11:22:17,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:22:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:22:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-11-07 11:22:17,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-11-07 11:22:17,593 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 220 flow. Second operand 7 states and 77 transitions. [2024-11-07 11:22:17,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 421 flow [2024-11-07 11:22:17,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 408 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-07 11:22:17,597 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 205 flow [2024-11-07 11:22:17,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2024-11-07 11:22:17,598 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-11-07 11:22:17,598 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 205 flow [2024-11-07 11:22:17,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 11:22:17,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:17,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:17,614 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 11:22:17,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:17,803 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 11:22:17,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:17,803 INFO L85 PathProgramCache]: Analyzing trace with hash -915834458, now seen corresponding path program 2 times [2024-11-07 11:22:17,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:17,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836827498] [2024-11-07 11:22:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:17,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:17,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:22:17,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:17,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836827498] [2024-11-07 11:22:17,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836827498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:17,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220958564] [2024-11-07 11:22:17,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:22:17,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:17,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:17,969 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 11:22:17,970 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 11:22:18,042 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 11:22:18,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:18,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 11:22:18,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:18,157 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:22:18,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220958564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:18,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:22:18,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-07 11:22:18,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933245903] [2024-11-07 11:22:18,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:18,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:22:18,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:18,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:22:18,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:22:18,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:18,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 205 flow. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 11:22:18,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:18,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:18,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:18,446 INFO L124 PetriNetUnfolderBase]: 388/672 cut-off events. [2024-11-07 11:22:18,446 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-07 11:22:18,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 672 events. 388/672 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2805 event pairs, 61 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 1737. Up to 232 conditions per place. [2024-11-07 11:22:18,452 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 67 selfloop transitions, 18 changer transitions 1/87 dead transitions. [2024-11-07 11:22:18,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 87 transitions, 523 flow [2024-11-07 11:22:18,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-11-07 11:22:18,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2024-11-07 11:22:18,455 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 205 flow. Second operand 9 states and 107 transitions. [2024-11-07 11:22:18,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 87 transitions, 523 flow [2024-11-07 11:22:18,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 504 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-07 11:22:18,460 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 288 flow [2024-11-07 11:22:18,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=288, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-11-07 11:22:18,460 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 31 predicate places. [2024-11-07 11:22:18,460 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 288 flow [2024-11-07 11:22:18,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 11:22:18,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:18,460 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:18,478 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 11:22:18,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:18,661 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 11:22:18,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash -133012491, now seen corresponding path program 2 times [2024-11-07 11:22:18,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:18,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156075957] [2024-11-07 11:22:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:18,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:22:18,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:18,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156075957] [2024-11-07 11:22:18,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156075957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:18,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387197577] [2024-11-07 11:22:18,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:22:18,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:18,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:18,818 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 11:22:18,819 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 11:22:18,895 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 11:22:18,896 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:18,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 11:22:18,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:18,931 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:22:18,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387197577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:18,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:22:18,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-11-07 11:22:18,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50680591] [2024-11-07 11:22:18,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:18,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:22:18,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:18,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:22:18,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:18,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:18,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 11:22:18,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:18,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:18,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:19,083 INFO L124 PetriNetUnfolderBase]: 482/826 cut-off events. [2024-11-07 11:22:19,083 INFO L125 PetriNetUnfolderBase]: For 901/901 co-relation queries the response was YES. [2024-11-07 11:22:19,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2306 conditions, 826 events. 482/826 cut-off events. For 901/901 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3584 event pairs, 33 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 2104. Up to 313 conditions per place. [2024-11-07 11:22:19,103 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 50 selfloop transitions, 17 changer transitions 5/73 dead transitions. [2024-11-07 11:22:19,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 519 flow [2024-11-07 11:22:19,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-11-07 11:22:19,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-11-07 11:22:19,109 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 288 flow. Second operand 5 states and 69 transitions. [2024-11-07 11:22:19,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 519 flow [2024-11-07 11:22:19,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 505 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-07 11:22:19,114 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 317 flow [2024-11-07 11:22:19,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2024-11-07 11:22:19,116 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 35 predicate places. [2024-11-07 11:22:19,117 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 317 flow [2024-11-07 11:22:19,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 11:22:19,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:19,117 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 11:22:19,134 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 11:22:19,321 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,SelfDestructingSolverStorable6 [2024-11-07 11:22:19,322 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 11:22:19,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:19,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2026604512, now seen corresponding path program 1 times [2024-11-07 11:22:19,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:19,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031573291] [2024-11-07 11:22:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:19,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:19,469 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 11:22:19,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031573291] [2024-11-07 11:22:19,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031573291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065978599] [2024-11-07 11:22:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:19,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:19,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:19,474 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 11:22:19,475 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 11:22:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:19,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:22:19,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:19,634 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 11:22:19,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:22:19,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065978599] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:19,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:22:19,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-07 11:22:19,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227568609] [2024-11-07 11:22:19,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:19,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:22:19,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:19,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:22:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-07 11:22:19,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:19,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 317 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:19,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:19,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:19,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:19,969 INFO L124 PetriNetUnfolderBase]: 488/817 cut-off events. [2024-11-07 11:22:19,969 INFO L125 PetriNetUnfolderBase]: For 1632/1632 co-relation queries the response was YES. [2024-11-07 11:22:19,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 817 events. 488/817 cut-off events. For 1632/1632 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3379 event pairs, 182 based on Foata normal form. 20/836 useless extension candidates. Maximal degree in co-relation 2449. Up to 264 conditions per place. [2024-11-07 11:22:19,975 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 74 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2024-11-07 11:22:19,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 663 flow [2024-11-07 11:22:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 11:22:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 11:22:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-11-07 11:22:19,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-11-07 11:22:19,977 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 317 flow. Second operand 8 states and 94 transitions. [2024-11-07 11:22:19,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 663 flow [2024-11-07 11:22:19,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 86 transitions, 620 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-11-07 11:22:19,984 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 326 flow [2024-11-07 11:22:19,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=326, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-11-07 11:22:19,986 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 31 predicate places. [2024-11-07 11:22:19,987 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 326 flow [2024-11-07 11:22:19,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:19,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:19,987 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 11:22:20,004 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 11:22:20,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:20,188 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 11:22:20,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:20,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1401016533, now seen corresponding path program 1 times [2024-11-07 11:22:20,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:20,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56274578] [2024-11-07 11:22:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:20,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:20,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:20,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56274578] [2024-11-07 11:22:20,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56274578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:20,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:20,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:20,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936995133] [2024-11-07 11:22:20,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:20,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:20,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:20,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:20,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:20,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:20,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 326 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 11:22:20,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:20,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:20,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:20,406 INFO L124 PetriNetUnfolderBase]: 370/636 cut-off events. [2024-11-07 11:22:20,406 INFO L125 PetriNetUnfolderBase]: For 1179/1179 co-relation queries the response was YES. [2024-11-07 11:22:20,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 636 events. 370/636 cut-off events. For 1179/1179 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2525 event pairs, 188 based on Foata normal form. 25/616 useless extension candidates. Maximal degree in co-relation 1872. Up to 396 conditions per place. [2024-11-07 11:22:20,410 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 52 selfloop transitions, 6 changer transitions 2/61 dead transitions. [2024-11-07 11:22:20,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 446 flow [2024-11-07 11:22:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-11-07 11:22:20,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-11-07 11:22:20,411 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 326 flow. Second operand 5 states and 66 transitions. [2024-11-07 11:22:20,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 446 flow [2024-11-07 11:22:20,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 422 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-07 11:22:20,414 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 263 flow [2024-11-07 11:22:20,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-11-07 11:22:20,415 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2024-11-07 11:22:20,415 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 263 flow [2024-11-07 11:22:20,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 11:22:20,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:20,416 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 11:22:20,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 11:22:20,416 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 11:22:20,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:20,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1357813479, now seen corresponding path program 1 times [2024-11-07 11:22:20,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:20,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311698445] [2024-11-07 11:22:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:20,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:20,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:20,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311698445] [2024-11-07 11:22:20,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311698445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:20,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:20,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:20,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430589424] [2024-11-07 11:22:20,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:20,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:20,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:20,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:20,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:20,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:20,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 11:22:20,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:20,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:20,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:20,616 INFO L124 PetriNetUnfolderBase]: 302/525 cut-off events. [2024-11-07 11:22:20,616 INFO L125 PetriNetUnfolderBase]: For 767/767 co-relation queries the response was YES. [2024-11-07 11:22:20,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1535 conditions, 525 events. 302/525 cut-off events. For 767/767 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1960 event pairs, 170 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 1504. Up to 396 conditions per place. [2024-11-07 11:22:20,619 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 30 selfloop transitions, 2 changer transitions 20/53 dead transitions. [2024-11-07 11:22:20,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 368 flow [2024-11-07 11:22:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:20,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-07 11:22:20,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-07 11:22:20,620 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 263 flow. Second operand 5 states and 60 transitions. [2024-11-07 11:22:20,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 368 flow [2024-11-07 11:22:20,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 354 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-07 11:22:20,623 INFO L231 Difference]: Finished difference. Result has 54 places, 33 transitions, 168 flow [2024-11-07 11:22:20,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=54, PETRI_TRANSITIONS=33} [2024-11-07 11:22:20,625 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2024-11-07 11:22:20,625 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 33 transitions, 168 flow [2024-11-07 11:22:20,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 11:22:20,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:20,625 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 11:22:20,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 11:22:20,626 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 11:22:20,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:20,626 INFO L85 PathProgramCache]: Analyzing trace with hash -333811787, now seen corresponding path program 1 times [2024-11-07 11:22:20,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:20,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859023747] [2024-11-07 11:22:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:20,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:20,766 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 11:22:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:20,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859023747] [2024-11-07 11:22:20,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859023747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:20,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391366368] [2024-11-07 11:22:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:20,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:20,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:20,769 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 11:22:20,772 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 11:22:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:20,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:22:20,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:20,924 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 11:22:20,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:22:21,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391366368] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:21,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:22:21,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-07 11:22:21,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092295180] [2024-11-07 11:22:21,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:21,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:22:21,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:21,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:22:21,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-07 11:22:21,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:21,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 33 transitions, 168 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:21,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:21,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:21,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:21,128 INFO L124 PetriNetUnfolderBase]: 328/561 cut-off events. [2024-11-07 11:22:21,129 INFO L125 PetriNetUnfolderBase]: For 674/674 co-relation queries the response was YES. [2024-11-07 11:22:21,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 561 events. 328/561 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2111 event pairs, 159 based on Foata normal form. 28/588 useless extension candidates. Maximal degree in co-relation 1614. Up to 278 conditions per place. [2024-11-07 11:22:21,132 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 39 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-11-07 11:22:21,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 333 flow [2024-11-07 11:22:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:22:21,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:22:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2024-11-07 11:22:21,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3163265306122449 [2024-11-07 11:22:21,133 INFO L175 Difference]: Start difference. First operand has 54 places, 33 transitions, 168 flow. Second operand 7 states and 62 transitions. [2024-11-07 11:22:21,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 333 flow [2024-11-07 11:22:21,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 312 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-07 11:22:21,135 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 186 flow [2024-11-07 11:22:21,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2024-11-07 11:22:21,135 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2024-11-07 11:22:21,135 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 186 flow [2024-11-07 11:22:21,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:21,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:21,136 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] [2024-11-07 11:22:21,152 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 11:22:21,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-07 11:22:21,339 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 11:22:21,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1721947342, now seen corresponding path program 1 times [2024-11-07 11:22:21,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:21,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132717899] [2024-11-07 11:22:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:21,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:21,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:21,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132717899] [2024-11-07 11:22:21,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132717899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:21,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075366753] [2024-11-07 11:22:21,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:21,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:21,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:21,916 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 11:22:21,918 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 11:22:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:21,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:22:21,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:22,108 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-07 11:22:22,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 24 [2024-11-07 11:22:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:22,139 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:22:22,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075366753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:22,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:22:22,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-07 11:22:22,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854433495] [2024-11-07 11:22:22,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:22,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:22:22,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:22,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:22:22,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:22:22,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:22,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 11:22:22,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:22,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:22,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:22,434 INFO L124 PetriNetUnfolderBase]: 461/793 cut-off events. [2024-11-07 11:22:22,435 INFO L125 PetriNetUnfolderBase]: For 1154/1154 co-relation queries the response was YES. [2024-11-07 11:22:22,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2490 conditions, 793 events. 461/793 cut-off events. For 1154/1154 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3428 event pairs, 195 based on Foata normal form. 1/793 useless extension candidates. Maximal degree in co-relation 2458. Up to 497 conditions per place. [2024-11-07 11:22:22,439 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 68 selfloop transitions, 9 changer transitions 6/84 dead transitions. [2024-11-07 11:22:22,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 84 transitions, 567 flow [2024-11-07 11:22:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:22:22,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:22:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-07 11:22:22,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-07 11:22:22,440 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 186 flow. Second operand 7 states and 91 transitions. [2024-11-07 11:22:22,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 84 transitions, 567 flow [2024-11-07 11:22:22,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 554 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 11:22:22,443 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 252 flow [2024-11-07 11:22:22,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-11-07 11:22:22,445 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2024-11-07 11:22:22,446 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 252 flow [2024-11-07 11:22:22,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 11:22:22,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:22,446 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] [2024-11-07 11:22:22,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-07 11:22:22,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:22,647 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 11:22:22,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:22,648 INFO L85 PathProgramCache]: Analyzing trace with hash -686636724, now seen corresponding path program 2 times [2024-11-07 11:22:22,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:22,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514928488] [2024-11-07 11:22:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:22,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:23,201 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 11:22:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514928488] [2024-11-07 11:22:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514928488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342155729] [2024-11-07 11:22:23,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:22:23,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:23,204 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:23,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 11:22:23,286 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 11:22:23,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:23,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:22:23,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:23,397 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-07 11:22:23,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 24 [2024-11-07 11:22:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:23,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:22:23,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342155729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:23,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:22:23,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2024-11-07 11:22:23,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815235414] [2024-11-07 11:22:23,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:23,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:22:23,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:23,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:22:23,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:22:23,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:23,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 11:22:23,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:23,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:23,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:23,709 INFO L124 PetriNetUnfolderBase]: 500/867 cut-off events. [2024-11-07 11:22:23,710 INFO L125 PetriNetUnfolderBase]: For 2057/2057 co-relation queries the response was YES. [2024-11-07 11:22:23,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3034 conditions, 867 events. 500/867 cut-off events. For 2057/2057 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3857 event pairs, 222 based on Foata normal form. 1/867 useless extension candidates. Maximal degree in co-relation 3001. Up to 503 conditions per place. [2024-11-07 11:22:23,715 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 63 selfloop transitions, 13 changer transitions 6/83 dead transitions. [2024-11-07 11:22:23,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 83 transitions, 632 flow [2024-11-07 11:22:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:22:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:22:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-07 11:22:23,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-07 11:22:23,716 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 252 flow. Second operand 7 states and 91 transitions. [2024-11-07 11:22:23,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 83 transitions, 632 flow [2024-11-07 11:22:23,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 83 transitions, 597 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-07 11:22:23,720 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 342 flow [2024-11-07 11:22:23,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=342, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-11-07 11:22:23,721 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2024-11-07 11:22:23,721 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 342 flow [2024-11-07 11:22:23,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 11:22:23,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:23,721 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] [2024-11-07 11:22:23,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 11:22:23,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:23,922 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 11:22:23,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:23,923 INFO L85 PathProgramCache]: Analyzing trace with hash 810573182, now seen corresponding path program 3 times [2024-11-07 11:22:23,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:23,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049061062] [2024-11-07 11:22:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:23,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:24,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:24,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049061062] [2024-11-07 11:22:24,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049061062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:24,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770753063] [2024-11-07 11:22:24,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:22:24,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:24,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:24,427 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:24,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 11:22:24,508 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-07 11:22:24,508 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:24,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:22:24,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:24,618 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-07 11:22:24,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 24 [2024-11-07 11:22:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:24,649 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:22:24,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770753063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:24,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:22:24,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-07 11:22:24,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19106936] [2024-11-07 11:22:24,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:24,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:22:24,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:24,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:22:24,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:22:24,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:24,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 11:22:24,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:24,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:24,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:24,923 INFO L124 PetriNetUnfolderBase]: 527/912 cut-off events. [2024-11-07 11:22:24,924 INFO L125 PetriNetUnfolderBase]: For 2681/2681 co-relation queries the response was YES. [2024-11-07 11:22:24,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3454 conditions, 912 events. 527/912 cut-off events. For 2681/2681 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4116 event pairs, 232 based on Foata normal form. 1/912 useless extension candidates. Maximal degree in co-relation 3418. Up to 511 conditions per place. [2024-11-07 11:22:24,930 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 70 selfloop transitions, 17 changer transitions 6/94 dead transitions. [2024-11-07 11:22:24,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 94 transitions, 818 flow [2024-11-07 11:22:24,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:22:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:22:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-11-07 11:22:24,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45408163265306123 [2024-11-07 11:22:24,931 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 342 flow. Second operand 7 states and 89 transitions. [2024-11-07 11:22:24,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 94 transitions, 818 flow [2024-11-07 11:22:24,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 94 transitions, 792 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-07 11:22:24,939 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 466 flow [2024-11-07 11:22:24,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=466, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2024-11-07 11:22:24,940 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 41 predicate places. [2024-11-07 11:22:24,940 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 466 flow [2024-11-07 11:22:24,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 11:22:24,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:24,940 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] [2024-11-07 11:22:24,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 11:22:25,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:25,141 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 11:22:25,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2087679896, now seen corresponding path program 4 times [2024-11-07 11:22:25,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:25,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900521193] [2024-11-07 11:22:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:25,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:25,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:25,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900521193] [2024-11-07 11:22:25,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900521193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:25,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:25,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:25,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088962819] [2024-11-07 11:22:25,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:25,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:25,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:25,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:25,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 466 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:25,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:25,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:25,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:25,823 INFO L124 PetriNetUnfolderBase]: 517/889 cut-off events. [2024-11-07 11:22:25,824 INFO L125 PetriNetUnfolderBase]: For 3234/3234 co-relation queries the response was YES. [2024-11-07 11:22:25,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3566 conditions, 889 events. 517/889 cut-off events. For 3234/3234 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3943 event pairs, 225 based on Foata normal form. 1/889 useless extension candidates. Maximal degree in co-relation 3527. Up to 504 conditions per place. [2024-11-07 11:22:25,829 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 59 selfloop transitions, 23 changer transitions 6/89 dead transitions. [2024-11-07 11:22:25,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 834 flow [2024-11-07 11:22:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-11-07 11:22:25,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-11-07 11:22:25,831 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 466 flow. Second operand 9 states and 96 transitions. [2024-11-07 11:22:25,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 834 flow [2024-11-07 11:22:25,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 89 transitions, 784 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-07 11:22:25,838 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 546 flow [2024-11-07 11:22:25,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=546, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2024-11-07 11:22:25,838 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2024-11-07 11:22:25,839 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 546 flow [2024-11-07 11:22:25,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:25,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:25,839 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] [2024-11-07 11:22:25,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 11:22:25,839 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 11:22:25,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash 200190496, now seen corresponding path program 5 times [2024-11-07 11:22:25,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:25,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494885237] [2024-11-07 11:22:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:25,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:26,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:26,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494885237] [2024-11-07 11:22:26,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494885237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:26,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806401845] [2024-11-07 11:22:26,316 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:22:26,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:26,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:26,318 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:26,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 11:22:26,406 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:22:26,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:26,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 11:22:26,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:26,539 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 11:22:26,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-07 11:22:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:26,572 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:22:26,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806401845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:26,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:22:26,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2024-11-07 11:22:26,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014490989] [2024-11-07 11:22:26,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:26,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:26,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:26,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:26,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:22:26,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:26,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 546 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:26,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:26,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:26,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:26,884 INFO L124 PetriNetUnfolderBase]: 683/1178 cut-off events. [2024-11-07 11:22:26,885 INFO L125 PetriNetUnfolderBase]: For 4237/4237 co-relation queries the response was YES. [2024-11-07 11:22:26,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4751 conditions, 1178 events. 683/1178 cut-off events. For 4237/4237 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5552 event pairs, 272 based on Foata normal form. 1/1179 useless extension candidates. Maximal degree in co-relation 4708. Up to 682 conditions per place. [2024-11-07 11:22:26,893 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 83 selfloop transitions, 25 changer transitions 6/115 dead transitions. [2024-11-07 11:22:26,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 1168 flow [2024-11-07 11:22:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-11-07 11:22:26,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-11-07 11:22:26,895 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 546 flow. Second operand 9 states and 96 transitions. [2024-11-07 11:22:26,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 1168 flow [2024-11-07 11:22:26,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 115 transitions, 1107 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-07 11:22:26,903 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 672 flow [2024-11-07 11:22:26,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=672, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-11-07 11:22:26,903 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2024-11-07 11:22:26,904 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 672 flow [2024-11-07 11:22:26,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:26,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:26,904 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] [2024-11-07 11:22:26,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 11:22:27,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-07 11:22:27,105 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:27,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:27,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1659732378, now seen corresponding path program 6 times [2024-11-07 11:22:27,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:27,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334261107] [2024-11-07 11:22:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:27,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:22:27,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:27,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334261107] [2024-11-07 11:22:27,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334261107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:27,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613427364] [2024-11-07 11:22:27,495 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:22:27,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:27,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:27,497 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:27,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-07 11:22:27,578 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-07 11:22:27,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:27,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:22:27,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:27,660 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-07 11:22:27,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 24 [2024-11-07 11:22:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:27,685 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:22:27,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613427364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:27,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:22:27,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-07 11:22:27,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411101794] [2024-11-07 11:22:27,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:27,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:22:27,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:27,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:22:27,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:22:27,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:27,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 672 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 11:22:27,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:27,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:27,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:27,968 INFO L124 PetriNetUnfolderBase]: 679/1172 cut-off events. [2024-11-07 11:22:27,969 INFO L125 PetriNetUnfolderBase]: For 5075/5075 co-relation queries the response was YES. [2024-11-07 11:22:27,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5083 conditions, 1172 events. 679/1172 cut-off events. For 5075/5075 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5488 event pairs, 281 based on Foata normal form. 2/1174 useless extension candidates. Maximal degree in co-relation 5037. Up to 689 conditions per place. [2024-11-07 11:22:27,977 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 75 selfloop transitions, 27 changer transitions 7/110 dead transitions. [2024-11-07 11:22:27,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 110 transitions, 1177 flow [2024-11-07 11:22:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:22:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:22:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-11-07 11:22:27,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44387755102040816 [2024-11-07 11:22:27,978 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 672 flow. Second operand 7 states and 87 transitions. [2024-11-07 11:22:27,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 110 transitions, 1177 flow [2024-11-07 11:22:27,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 110 transitions, 1114 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-07 11:22:27,988 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 849 flow [2024-11-07 11:22:27,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=849, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2024-11-07 11:22:27,989 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 60 predicate places. [2024-11-07 11:22:27,989 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 849 flow [2024-11-07 11:22:27,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 11:22:27,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:27,989 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] [2024-11-07 11:22:28,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-07 11:22:28,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-07 11:22:28,190 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:28,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:28,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2015334144, now seen corresponding path program 7 times [2024-11-07 11:22:28,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:28,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883379962] [2024-11-07 11:22:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:28,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:28,591 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 11:22:28,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:28,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883379962] [2024-11-07 11:22:28,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883379962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:28,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357047168] [2024-11-07 11:22:28,591 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:22:28,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:28,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:28,594 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:28,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-07 11:22:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:28,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 11:22:28,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:28,782 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-07 11:22:28,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 24 [2024-11-07 11:22:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:28,811 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:22:28,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357047168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:28,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:22:28,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2024-11-07 11:22:28,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850469173] [2024-11-07 11:22:28,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:28,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:22:28,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:28,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:22:28,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:22:28,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:28,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 849 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 11:22:28,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:28,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:28,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:29,123 INFO L124 PetriNetUnfolderBase]: 676/1166 cut-off events. [2024-11-07 11:22:29,123 INFO L125 PetriNetUnfolderBase]: For 6097/6097 co-relation queries the response was YES. [2024-11-07 11:22:29,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5200 conditions, 1166 events. 676/1166 cut-off events. For 6097/6097 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5438 event pairs, 291 based on Foata normal form. 1/1166 useless extension candidates. Maximal degree in co-relation 5151. Up to 689 conditions per place. [2024-11-07 11:22:29,133 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 76 selfloop transitions, 28 changer transitions 6/111 dead transitions. [2024-11-07 11:22:29,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 111 transitions, 1269 flow [2024-11-07 11:22:29,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:22:29,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:22:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-11-07 11:22:29,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-11-07 11:22:29,134 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 849 flow. Second operand 7 states and 90 transitions. [2024-11-07 11:22:29,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 111 transitions, 1269 flow [2024-11-07 11:22:29,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 1213 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-11-07 11:22:29,147 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 938 flow [2024-11-07 11:22:29,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=938, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-11-07 11:22:29,147 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2024-11-07 11:22:29,147 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 938 flow [2024-11-07 11:22:29,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 11:22:29,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:29,148 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] [2024-11-07 11:22:29,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-07 11:22:29,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 11:22:29,352 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:29,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:29,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1802163952, now seen corresponding path program 8 times [2024-11-07 11:22:29,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:29,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722035739] [2024-11-07 11:22:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:29,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:29,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:29,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722035739] [2024-11-07 11:22:29,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722035739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:29,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:29,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181031608] [2024-11-07 11:22:29,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:29,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:29,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:29,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:29,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:29,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:29,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 938 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:29,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:29,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:29,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:29,986 INFO L124 PetriNetUnfolderBase]: 667/1144 cut-off events. [2024-11-07 11:22:29,987 INFO L125 PetriNetUnfolderBase]: For 6286/6286 co-relation queries the response was YES. [2024-11-07 11:22:29,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5217 conditions, 1144 events. 667/1144 cut-off events. For 6286/6286 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5243 event pairs, 290 based on Foata normal form. 1/1144 useless extension candidates. Maximal degree in co-relation 5165. Up to 682 conditions per place. [2024-11-07 11:22:29,997 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 75 selfloop transitions, 29 changer transitions 6/111 dead transitions. [2024-11-07 11:22:29,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 111 transitions, 1309 flow [2024-11-07 11:22:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:22:29,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:22:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-11-07 11:22:29,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-11-07 11:22:29,999 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 938 flow. Second operand 10 states and 90 transitions. [2024-11-07 11:22:29,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 111 transitions, 1309 flow [2024-11-07 11:22:30,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 111 transitions, 1256 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-07 11:22:30,015 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 968 flow [2024-11-07 11:22:30,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=968, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-11-07 11:22:30,016 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2024-11-07 11:22:30,016 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 968 flow [2024-11-07 11:22:30,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:30,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:30,018 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] [2024-11-07 11:22:30,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 11:22:30,018 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:30,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:30,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2087307079, now seen corresponding path program 1 times [2024-11-07 11:22:30,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:30,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645012830] [2024-11-07 11:22:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:30,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:30,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:30,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645012830] [2024-11-07 11:22:30,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645012830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:30,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:30,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:30,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329197693] [2024-11-07 11:22:30,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:30,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:30,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:30,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:30,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:30,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:30,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 968 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:30,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:30,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:30,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:30,545 INFO L124 PetriNetUnfolderBase]: 718/1240 cut-off events. [2024-11-07 11:22:30,545 INFO L125 PetriNetUnfolderBase]: For 6578/6578 co-relation queries the response was YES. [2024-11-07 11:22:30,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5652 conditions, 1240 events. 718/1240 cut-off events. For 6578/6578 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5949 event pairs, 287 based on Foata normal form. 12/1252 useless extension candidates. Maximal degree in co-relation 5596. Up to 684 conditions per place. [2024-11-07 11:22:30,555 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 88 selfloop transitions, 35 changer transitions 0/124 dead transitions. [2024-11-07 11:22:30,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 124 transitions, 1448 flow [2024-11-07 11:22:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-11-07 11:22:30,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-11-07 11:22:30,556 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 968 flow. Second operand 9 states and 104 transitions. [2024-11-07 11:22:30,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 124 transitions, 1448 flow [2024-11-07 11:22:30,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 124 transitions, 1387 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:30,572 INFO L231 Difference]: Finished difference. Result has 103 places, 84 transitions, 1035 flow [2024-11-07 11:22:30,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1035, PETRI_PLACES=103, PETRI_TRANSITIONS=84} [2024-11-07 11:22:30,572 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 77 predicate places. [2024-11-07 11:22:30,573 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 84 transitions, 1035 flow [2024-11-07 11:22:30,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:30,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:30,573 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] [2024-11-07 11:22:30,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 11:22:30,573 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:30,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:30,574 INFO L85 PathProgramCache]: Analyzing trace with hash -226551663, now seen corresponding path program 2 times [2024-11-07 11:22:30,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:30,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502123105] [2024-11-07 11:22:30,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:30,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:30,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502123105] [2024-11-07 11:22:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502123105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:30,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:30,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:30,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545776663] [2024-11-07 11:22:30,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:30,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:30,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:30,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:30,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:30,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 84 transitions, 1035 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:30,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:30,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:30,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:31,085 INFO L124 PetriNetUnfolderBase]: 713/1235 cut-off events. [2024-11-07 11:22:31,086 INFO L125 PetriNetUnfolderBase]: For 6741/6741 co-relation queries the response was YES. [2024-11-07 11:22:31,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5710 conditions, 1235 events. 713/1235 cut-off events. For 6741/6741 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6049 event pairs, 266 based on Foata normal form. 5/1240 useless extension candidates. Maximal degree in co-relation 5655. Up to 684 conditions per place. [2024-11-07 11:22:31,096 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 83 selfloop transitions, 33 changer transitions 10/127 dead transitions. [2024-11-07 11:22:31,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 127 transitions, 1497 flow [2024-11-07 11:22:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:31,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-11-07 11:22:31,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-07 11:22:31,098 INFO L175 Difference]: Start difference. First operand has 103 places, 84 transitions, 1035 flow. Second operand 9 states and 93 transitions. [2024-11-07 11:22:31,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 127 transitions, 1497 flow [2024-11-07 11:22:31,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 127 transitions, 1411 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-07 11:22:31,119 INFO L231 Difference]: Finished difference. Result has 106 places, 82 transitions, 982 flow [2024-11-07 11:22:31,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=982, PETRI_PLACES=106, PETRI_TRANSITIONS=82} [2024-11-07 11:22:31,120 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 80 predicate places. [2024-11-07 11:22:31,120 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 82 transitions, 982 flow [2024-11-07 11:22:31,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:31,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:31,120 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] [2024-11-07 11:22:31,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-07 11:22:31,120 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:31,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:31,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1851301303, now seen corresponding path program 3 times [2024-11-07 11:22:31,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:31,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553891135] [2024-11-07 11:22:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:31,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:31,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:31,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553891135] [2024-11-07 11:22:31,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553891135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:31,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576800662] [2024-11-07 11:22:31,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:22:31,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:31,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:31,380 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:31,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-07 11:22:31,471 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:22:31,471 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:31,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:22:31,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:31,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:31,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-07 11:22:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:31,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:31,678 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:22:31,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-07 11:22:31,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:31,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576800662] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:31,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:22:31,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 18 [2024-11-07 11:22:31,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596753350] [2024-11-07 11:22:31,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:31,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:22:31,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:31,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:22:31,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:22:31,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:31,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 82 transitions, 982 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 11:22:31,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:31,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:31,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:32,011 INFO L124 PetriNetUnfolderBase]: 751/1311 cut-off events. [2024-11-07 11:22:32,011 INFO L125 PetriNetUnfolderBase]: For 6861/6861 co-relation queries the response was YES. [2024-11-07 11:22:32,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5960 conditions, 1311 events. 751/1311 cut-off events. For 6861/6861 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6529 event pairs, 291 based on Foata normal form. 12/1323 useless extension candidates. Maximal degree in co-relation 5904. Up to 703 conditions per place. [2024-11-07 11:22:32,020 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 97 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-11-07 11:22:32,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 130 transitions, 1511 flow [2024-11-07 11:22:32,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:22:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:22:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-11-07 11:22:32,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-07 11:22:32,021 INFO L175 Difference]: Start difference. First operand has 106 places, 82 transitions, 982 flow. Second operand 7 states and 96 transitions. [2024-11-07 11:22:32,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 130 transitions, 1511 flow [2024-11-07 11:22:32,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 130 transitions, 1425 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:32,038 INFO L231 Difference]: Finished difference. Result has 105 places, 85 transitions, 1032 flow [2024-11-07 11:22:32,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1032, PETRI_PLACES=105, PETRI_TRANSITIONS=85} [2024-11-07 11:22:32,039 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 79 predicate places. [2024-11-07 11:22:32,039 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 85 transitions, 1032 flow [2024-11-07 11:22:32,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 11:22:32,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:32,039 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] [2024-11-07 11:22:32,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-07 11:22:32,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:32,240 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:32,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:32,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1323625025, now seen corresponding path program 1 times [2024-11-07 11:22:32,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:32,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778235798] [2024-11-07 11:22:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:32,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:32,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:32,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778235798] [2024-11-07 11:22:32,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778235798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:32,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724353237] [2024-11-07 11:22:32,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:32,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:32,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:32,471 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:32,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-07 11:22:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:32,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:22:32,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:32,629 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-07 11:22:32,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-07 11:22:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:32,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:32,729 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:22:32,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-07 11:22:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:32,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724353237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:32,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:32,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-07 11:22:32,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055407145] [2024-11-07 11:22:32,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:32,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 11:22:32,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 11:22:32,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-07 11:22:32,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:32,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 85 transitions, 1032 flow. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 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 11:22:32,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:32,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:32,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:33,102 INFO L124 PetriNetUnfolderBase]: 791/1379 cut-off events. [2024-11-07 11:22:33,103 INFO L125 PetriNetUnfolderBase]: For 6638/6638 co-relation queries the response was YES. [2024-11-07 11:22:33,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6271 conditions, 1379 events. 791/1379 cut-off events. For 6638/6638 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7009 event pairs, 154 based on Foata normal form. 14/1392 useless extension candidates. Maximal degree in co-relation 6215. Up to 659 conditions per place. [2024-11-07 11:22:33,111 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 101 selfloop transitions, 38 changer transitions 0/140 dead transitions. [2024-11-07 11:22:33,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 140 transitions, 1625 flow [2024-11-07 11:22:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:22:33,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:22:33,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-11-07 11:22:33,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-11-07 11:22:33,112 INFO L175 Difference]: Start difference. First operand has 105 places, 85 transitions, 1032 flow. Second operand 10 states and 106 transitions. [2024-11-07 11:22:33,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 140 transitions, 1625 flow [2024-11-07 11:22:33,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 140 transitions, 1586 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-07 11:22:33,129 INFO L231 Difference]: Finished difference. Result has 114 places, 87 transitions, 1099 flow [2024-11-07 11:22:33,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1099, PETRI_PLACES=114, PETRI_TRANSITIONS=87} [2024-11-07 11:22:33,130 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 88 predicate places. [2024-11-07 11:22:33,130 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 87 transitions, 1099 flow [2024-11-07 11:22:33,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 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 11:22:33,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:33,130 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] [2024-11-07 11:22:33,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-07 11:22:33,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-07 11:22:33,331 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:33,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:33,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2049108817, now seen corresponding path program 4 times [2024-11-07 11:22:33,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:33,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846418604] [2024-11-07 11:22:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:33,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:33,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:33,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846418604] [2024-11-07 11:22:33,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846418604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:33,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:33,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:33,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871675698] [2024-11-07 11:22:33,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:33,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:33,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:33,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:33,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:33,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:33,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 87 transitions, 1099 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:33,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:33,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:33,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:33,841 INFO L124 PetriNetUnfolderBase]: 791/1384 cut-off events. [2024-11-07 11:22:33,841 INFO L125 PetriNetUnfolderBase]: For 7467/7467 co-relation queries the response was YES. [2024-11-07 11:22:33,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6492 conditions, 1384 events. 791/1384 cut-off events. For 7467/7467 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7020 event pairs, 336 based on Foata normal form. 5/1389 useless extension candidates. Maximal degree in co-relation 6432. Up to 764 conditions per place. [2024-11-07 11:22:33,849 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 79 selfloop transitions, 38 changer transitions 4/122 dead transitions. [2024-11-07 11:22:33,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 122 transitions, 1536 flow [2024-11-07 11:22:33,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-11-07 11:22:33,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-07 11:22:33,850 INFO L175 Difference]: Start difference. First operand has 114 places, 87 transitions, 1099 flow. Second operand 9 states and 90 transitions. [2024-11-07 11:22:33,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 122 transitions, 1536 flow [2024-11-07 11:22:33,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 122 transitions, 1445 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:33,871 INFO L231 Difference]: Finished difference. Result has 117 places, 88 transitions, 1109 flow [2024-11-07 11:22:33,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1109, PETRI_PLACES=117, PETRI_TRANSITIONS=88} [2024-11-07 11:22:33,872 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 91 predicate places. [2024-11-07 11:22:33,872 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 88 transitions, 1109 flow [2024-11-07 11:22:33,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:33,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:33,872 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] [2024-11-07 11:22:33,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-07 11:22:33,872 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:33,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:33,873 INFO L85 PathProgramCache]: Analyzing trace with hash 218597905, now seen corresponding path program 5 times [2024-11-07 11:22:33,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:33,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067318503] [2024-11-07 11:22:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:33,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:34,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:34,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067318503] [2024-11-07 11:22:34,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067318503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:34,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:34,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:34,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887054406] [2024-11-07 11:22:34,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:34,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:34,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:34,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:34,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 88 transitions, 1109 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:34,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:34,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:34,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:34,388 INFO L124 PetriNetUnfolderBase]: 754/1306 cut-off events. [2024-11-07 11:22:34,388 INFO L125 PetriNetUnfolderBase]: For 6520/6520 co-relation queries the response was YES. [2024-11-07 11:22:34,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6176 conditions, 1306 events. 754/1306 cut-off events. For 6520/6520 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6421 event pairs, 329 based on Foata normal form. 5/1311 useless extension candidates. Maximal degree in co-relation 6132. Up to 764 conditions per place. [2024-11-07 11:22:34,395 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 78 selfloop transitions, 35 changer transitions 8/122 dead transitions. [2024-11-07 11:22:34,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 122 transitions, 1499 flow [2024-11-07 11:22:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:34,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-11-07 11:22:34,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-11-07 11:22:34,396 INFO L175 Difference]: Start difference. First operand has 117 places, 88 transitions, 1109 flow. Second operand 9 states and 91 transitions. [2024-11-07 11:22:34,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 122 transitions, 1499 flow [2024-11-07 11:22:34,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 122 transitions, 1416 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:34,411 INFO L231 Difference]: Finished difference. Result has 117 places, 85 transitions, 1046 flow [2024-11-07 11:22:34,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1046, PETRI_PLACES=117, PETRI_TRANSITIONS=85} [2024-11-07 11:22:34,412 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 91 predicate places. [2024-11-07 11:22:34,412 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 85 transitions, 1046 flow [2024-11-07 11:22:34,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:34,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:34,412 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] [2024-11-07 11:22:34,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-07 11:22:34,413 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:34,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1511752797, now seen corresponding path program 2 times [2024-11-07 11:22:34,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:34,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234758652] [2024-11-07 11:22:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:34,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:34,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:34,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234758652] [2024-11-07 11:22:34,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234758652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:34,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085535528] [2024-11-07 11:22:34,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:22:34,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:34,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:34,684 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:34,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-07 11:22:34,783 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:22:34,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:34,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:22:34,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:34,889 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-07 11:22:34,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-07 11:22:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:34,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:35,002 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:22:35,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-07 11:22:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:35,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085535528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:35,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:35,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-11-07 11:22:35,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135975025] [2024-11-07 11:22:35,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:35,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 11:22:35,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:35,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 11:22:35,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-07 11:22:35,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:35,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 85 transitions, 1046 flow. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 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 11:22:35,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:35,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:35,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:35,485 INFO L124 PetriNetUnfolderBase]: 1117/1932 cut-off events. [2024-11-07 11:22:35,485 INFO L125 PetriNetUnfolderBase]: For 8393/8393 co-relation queries the response was YES. [2024-11-07 11:22:35,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8484 conditions, 1932 events. 1117/1932 cut-off events. For 8393/8393 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10388 event pairs, 362 based on Foata normal form. 14/1946 useless extension candidates. Maximal degree in co-relation 8440. Up to 730 conditions per place. [2024-11-07 11:22:35,492 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 119 selfloop transitions, 44 changer transitions 0/164 dead transitions. [2024-11-07 11:22:35,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 164 transitions, 1833 flow [2024-11-07 11:22:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:22:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:22:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-11-07 11:22:35,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-11-07 11:22:35,493 INFO L175 Difference]: Start difference. First operand has 117 places, 85 transitions, 1046 flow. Second operand 12 states and 138 transitions. [2024-11-07 11:22:35,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 164 transitions, 1833 flow [2024-11-07 11:22:35,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 164 transitions, 1745 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-11-07 11:22:35,504 INFO L231 Difference]: Finished difference. Result has 120 places, 93 transitions, 1178 flow [2024-11-07 11:22:35,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1178, PETRI_PLACES=120, PETRI_TRANSITIONS=93} [2024-11-07 11:22:35,505 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 94 predicate places. [2024-11-07 11:22:35,505 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 93 transitions, 1178 flow [2024-11-07 11:22:35,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 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 11:22:35,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:35,505 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] [2024-11-07 11:22:35,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-07 11:22:35,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-07 11:22:35,705 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:35,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:35,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1292645215, now seen corresponding path program 3 times [2024-11-07 11:22:35,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:35,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343034305] [2024-11-07 11:22:35,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:35,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:35,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:35,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343034305] [2024-11-07 11:22:35,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343034305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:35,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:35,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:35,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077741965] [2024-11-07 11:22:35,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:35,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:35,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:35,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:35,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:35,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:35,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 93 transitions, 1178 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:35,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:35,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:35,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:36,290 INFO L124 PetriNetUnfolderBase]: 1113/1928 cut-off events. [2024-11-07 11:22:36,290 INFO L125 PetriNetUnfolderBase]: For 10454/10454 co-relation queries the response was YES. [2024-11-07 11:22:36,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8959 conditions, 1928 events. 1113/1928 cut-off events. For 10454/10454 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10298 event pairs, 581 based on Foata normal form. 4/1932 useless extension candidates. Maximal degree in co-relation 8913. Up to 1396 conditions per place. [2024-11-07 11:22:36,298 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 84 selfloop transitions, 35 changer transitions 3/123 dead transitions. [2024-11-07 11:22:36,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 123 transitions, 1565 flow [2024-11-07 11:22:36,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-07 11:22:36,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3412698412698413 [2024-11-07 11:22:36,299 INFO L175 Difference]: Start difference. First operand has 120 places, 93 transitions, 1178 flow. Second operand 9 states and 86 transitions. [2024-11-07 11:22:36,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 123 transitions, 1565 flow [2024-11-07 11:22:36,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 123 transitions, 1489 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-11-07 11:22:36,314 INFO L231 Difference]: Finished difference. Result has 120 places, 91 transitions, 1139 flow [2024-11-07 11:22:36,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1139, PETRI_PLACES=120, PETRI_TRANSITIONS=91} [2024-11-07 11:22:36,314 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 94 predicate places. [2024-11-07 11:22:36,314 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 91 transitions, 1139 flow [2024-11-07 11:22:36,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:36,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:36,315 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] [2024-11-07 11:22:36,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-07 11:22:36,315 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:36,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:36,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2058021563, now seen corresponding path program 4 times [2024-11-07 11:22:36,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:36,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122058575] [2024-11-07 11:22:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:36,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:36,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:36,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122058575] [2024-11-07 11:22:36,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122058575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:36,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452482600] [2024-11-07 11:22:36,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:22:36,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:36,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:36,534 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:36,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-07 11:22:36,616 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:22:36,617 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:36,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:22:36,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:36,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:36,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-07 11:22:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:36,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:36,791 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:22:36,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-07 11:22:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:36,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452482600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:36,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:36,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 20 [2024-11-07 11:22:36,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360670395] [2024-11-07 11:22:36,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:36,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:22:36,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:22:36,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:22:36,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:36,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 91 transitions, 1139 flow. Second operand has 20 states, 20 states have (on average 5.45) internal successors, (109), 20 states have internal predecessors, (109), 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 11:22:36,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:36,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:36,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:37,336 INFO L124 PetriNetUnfolderBase]: 1161/2007 cut-off events. [2024-11-07 11:22:37,336 INFO L125 PetriNetUnfolderBase]: For 10211/10211 co-relation queries the response was YES. [2024-11-07 11:22:37,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9039 conditions, 2007 events. 1161/2007 cut-off events. For 10211/10211 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10807 event pairs, 455 based on Foata normal form. 21/2028 useless extension candidates. Maximal degree in co-relation 8994. Up to 1016 conditions per place. [2024-11-07 11:22:37,345 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 116 selfloop transitions, 49 changer transitions 0/166 dead transitions. [2024-11-07 11:22:37,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 166 transitions, 1891 flow [2024-11-07 11:22:37,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 11:22:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 11:22:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 141 transitions. [2024-11-07 11:22:37,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3596938775510204 [2024-11-07 11:22:37,346 INFO L175 Difference]: Start difference. First operand has 120 places, 91 transitions, 1139 flow. Second operand 14 states and 141 transitions. [2024-11-07 11:22:37,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 166 transitions, 1891 flow [2024-11-07 11:22:37,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 166 transitions, 1813 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:37,369 INFO L231 Difference]: Finished difference. Result has 130 places, 101 transitions, 1302 flow [2024-11-07 11:22:37,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1302, PETRI_PLACES=130, PETRI_TRANSITIONS=101} [2024-11-07 11:22:37,370 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 104 predicate places. [2024-11-07 11:22:37,370 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 101 transitions, 1302 flow [2024-11-07 11:22:37,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.45) internal successors, (109), 20 states have internal predecessors, (109), 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 11:22:37,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:37,370 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] [2024-11-07 11:22:37,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-07 11:22:37,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-07 11:22:37,574 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:37,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1115061845, now seen corresponding path program 6 times [2024-11-07 11:22:37,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:37,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930921176] [2024-11-07 11:22:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:37,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:37,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:37,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930921176] [2024-11-07 11:22:37,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930921176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:37,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:37,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:37,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853080965] [2024-11-07 11:22:37,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:37,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:37,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:37,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:37,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:37,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:37,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 101 transitions, 1302 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:37,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:37,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:37,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:38,099 INFO L124 PetriNetUnfolderBase]: 1186/2046 cut-off events. [2024-11-07 11:22:38,099 INFO L125 PetriNetUnfolderBase]: For 13300/13300 co-relation queries the response was YES. [2024-11-07 11:22:38,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9639 conditions, 2046 events. 1186/2046 cut-off events. For 13300/13300 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10967 event pairs, 646 based on Foata normal form. 12/2058 useless extension candidates. Maximal degree in co-relation 9589. Up to 1495 conditions per place. [2024-11-07 11:22:38,112 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 96 selfloop transitions, 38 changer transitions 0/135 dead transitions. [2024-11-07 11:22:38,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 135 transitions, 1787 flow [2024-11-07 11:22:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:38,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-11-07 11:22:38,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-11-07 11:22:38,114 INFO L175 Difference]: Start difference. First operand has 130 places, 101 transitions, 1302 flow. Second operand 9 states and 96 transitions. [2024-11-07 11:22:38,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 135 transitions, 1787 flow [2024-11-07 11:22:38,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 135 transitions, 1719 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:38,140 INFO L231 Difference]: Finished difference. Result has 134 places, 107 transitions, 1439 flow [2024-11-07 11:22:38,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1439, PETRI_PLACES=134, PETRI_TRANSITIONS=107} [2024-11-07 11:22:38,141 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 108 predicate places. [2024-11-07 11:22:38,141 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 107 transitions, 1439 flow [2024-11-07 11:22:38,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:38,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:38,141 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] [2024-11-07 11:22:38,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-07 11:22:38,141 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:38,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:38,141 INFO L85 PathProgramCache]: Analyzing trace with hash -102369313, now seen corresponding path program 7 times [2024-11-07 11:22:38,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:38,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700576535] [2024-11-07 11:22:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:38,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:38,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:38,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700576535] [2024-11-07 11:22:38,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700576535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:38,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:38,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:38,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847457401] [2024-11-07 11:22:38,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:38,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:38,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:38,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:38,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:38,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:38,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 107 transitions, 1439 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:38,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:38,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:38,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:38,630 INFO L124 PetriNetUnfolderBase]: 1174/2034 cut-off events. [2024-11-07 11:22:38,630 INFO L125 PetriNetUnfolderBase]: For 12761/12761 co-relation queries the response was YES. [2024-11-07 11:22:38,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9557 conditions, 2034 events. 1174/2034 cut-off events. For 12761/12761 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10913 event pairs, 635 based on Foata normal form. 12/2046 useless extension candidates. Maximal degree in co-relation 9504. Up to 1495 conditions per place. [2024-11-07 11:22:38,645 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 96 selfloop transitions, 39 changer transitions 0/136 dead transitions. [2024-11-07 11:22:38,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 136 transitions, 1856 flow [2024-11-07 11:22:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-11-07 11:22:38,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-11-07 11:22:38,646 INFO L175 Difference]: Start difference. First operand has 134 places, 107 transitions, 1439 flow. Second operand 9 states and 96 transitions. [2024-11-07 11:22:38,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 136 transitions, 1856 flow [2024-11-07 11:22:38,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 136 transitions, 1786 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-07 11:22:38,678 INFO L231 Difference]: Finished difference. Result has 140 places, 110 transitions, 1524 flow [2024-11-07 11:22:38,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1524, PETRI_PLACES=140, PETRI_TRANSITIONS=110} [2024-11-07 11:22:38,678 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 114 predicate places. [2024-11-07 11:22:38,678 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 110 transitions, 1524 flow [2024-11-07 11:22:38,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:38,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:38,679 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] [2024-11-07 11:22:38,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-07 11:22:38,679 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:38,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:38,679 INFO L85 PathProgramCache]: Analyzing trace with hash -68770085, now seen corresponding path program 8 times [2024-11-07 11:22:38,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:38,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330353308] [2024-11-07 11:22:38,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:38,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:38,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:38,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330353308] [2024-11-07 11:22:38,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330353308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:38,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:38,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:38,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819896002] [2024-11-07 11:22:38,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:38,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:38,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:38,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:38,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:38,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:38,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 110 transitions, 1524 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:38,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:38,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:38,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:39,170 INFO L124 PetriNetUnfolderBase]: 1174/2039 cut-off events. [2024-11-07 11:22:39,170 INFO L125 PetriNetUnfolderBase]: For 12422/12422 co-relation queries the response was YES. [2024-11-07 11:22:39,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9603 conditions, 2039 events. 1174/2039 cut-off events. For 12422/12422 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10989 event pairs, 632 based on Foata normal form. 5/2044 useless extension candidates. Maximal degree in co-relation 9547. Up to 1495 conditions per place. [2024-11-07 11:22:39,183 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 92 selfloop transitions, 36 changer transitions 5/134 dead transitions. [2024-11-07 11:22:39,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 134 transitions, 1877 flow [2024-11-07 11:22:39,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:39,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-11-07 11:22:39,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-07 11:22:39,184 INFO L175 Difference]: Start difference. First operand has 140 places, 110 transitions, 1524 flow. Second operand 9 states and 90 transitions. [2024-11-07 11:22:39,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 134 transitions, 1877 flow [2024-11-07 11:22:39,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 134 transitions, 1767 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:39,206 INFO L231 Difference]: Finished difference. Result has 142 places, 109 transitions, 1474 flow [2024-11-07 11:22:39,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1474, PETRI_PLACES=142, PETRI_TRANSITIONS=109} [2024-11-07 11:22:39,206 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 116 predicate places. [2024-11-07 11:22:39,207 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 109 transitions, 1474 flow [2024-11-07 11:22:39,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:39,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:39,207 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] [2024-11-07 11:22:39,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-07 11:22:39,207 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:39,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:39,207 INFO L85 PathProgramCache]: Analyzing trace with hash -600675833, now seen corresponding path program 5 times [2024-11-07 11:22:39,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:39,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576560773] [2024-11-07 11:22:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:39,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:39,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:39,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576560773] [2024-11-07 11:22:39,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576560773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:39,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042485466] [2024-11-07 11:22:39,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:22:39,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:39,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:39,426 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:39,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-07 11:22:39,506 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:22:39,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:39,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 11:22:39,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:39,684 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-07 11:22:39,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-07 11:22:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:22:39,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:39,854 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-07 11:22:39,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2024-11-07 11:22:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:22:40,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042485466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:40,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:40,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2024-11-07 11:22:40,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810469099] [2024-11-07 11:22:40,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:40,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-07 11:22:40,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:40,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-07 11:22:40,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2024-11-07 11:22:40,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:40,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 109 transitions, 1474 flow. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 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 11:22:40,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:40,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:40,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:42,674 INFO L124 PetriNetUnfolderBase]: 4662/8106 cut-off events. [2024-11-07 11:22:42,674 INFO L125 PetriNetUnfolderBase]: For 42793/42793 co-relation queries the response was YES. [2024-11-07 11:22:42,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36033 conditions, 8106 events. 4662/8106 cut-off events. For 42793/42793 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 57649 event pairs, 880 based on Foata normal form. 194/8300 useless extension candidates. Maximal degree in co-relation 35976. Up to 1424 conditions per place. [2024-11-07 11:22:42,714 INFO L140 encePairwiseOnDemand]: 11/28 looper letters, 384 selfloop transitions, 241 changer transitions 19/645 dead transitions. [2024-11-07 11:22:42,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 645 transitions, 7806 flow [2024-11-07 11:22:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-07 11:22:42,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-07 11:22:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 524 transitions. [2024-11-07 11:22:42,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40683229813664595 [2024-11-07 11:22:42,716 INFO L175 Difference]: Start difference. First operand has 142 places, 109 transitions, 1474 flow. Second operand 46 states and 524 transitions. [2024-11-07 11:22:42,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 645 transitions, 7806 flow [2024-11-07 11:22:42,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 645 transitions, 7556 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-11-07 11:22:42,818 INFO L231 Difference]: Finished difference. Result has 201 places, 334 transitions, 5280 flow [2024-11-07 11:22:42,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5280, PETRI_PLACES=201, PETRI_TRANSITIONS=334} [2024-11-07 11:22:42,818 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 175 predicate places. [2024-11-07 11:22:42,818 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 334 transitions, 5280 flow [2024-11-07 11:22:42,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 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 11:22:42,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:42,819 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] [2024-11-07 11:22:42,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-07 11:22:43,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:43,019 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:43,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:43,019 INFO L85 PathProgramCache]: Analyzing trace with hash -317493349, now seen corresponding path program 9 times [2024-11-07 11:22:43,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:43,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826205126] [2024-11-07 11:22:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:43,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:43,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:43,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826205126] [2024-11-07 11:22:43,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826205126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:43,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:43,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:43,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829861588] [2024-11-07 11:22:43,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:43,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:43,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:43,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:43,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:43,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 334 transitions, 5280 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:43,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:43,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:43,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:44,366 INFO L124 PetriNetUnfolderBase]: 4589/8014 cut-off events. [2024-11-07 11:22:44,367 INFO L125 PetriNetUnfolderBase]: For 91839/91839 co-relation queries the response was YES. [2024-11-07 11:22:44,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47496 conditions, 8014 events. 4589/8014 cut-off events. For 91839/91839 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 57131 event pairs, 2484 based on Foata normal form. 15/8025 useless extension candidates. Maximal degree in co-relation 47417. Up to 6406 conditions per place. [2024-11-07 11:22:44,425 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 246 selfloop transitions, 104 changer transitions 6/357 dead transitions. [2024-11-07 11:22:44,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 357 transitions, 6135 flow [2024-11-07 11:22:44,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-11-07 11:22:44,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3531746031746032 [2024-11-07 11:22:44,426 INFO L175 Difference]: Start difference. First operand has 201 places, 334 transitions, 5280 flow. Second operand 9 states and 89 transitions. [2024-11-07 11:22:44,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 357 transitions, 6135 flow [2024-11-07 11:22:44,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 357 transitions, 5851 flow, removed 124 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:44,742 INFO L231 Difference]: Finished difference. Result has 202 places, 331 transitions, 5148 flow [2024-11-07 11:22:44,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4996, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5148, PETRI_PLACES=202, PETRI_TRANSITIONS=331} [2024-11-07 11:22:44,742 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 176 predicate places. [2024-11-07 11:22:44,742 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 331 transitions, 5148 flow [2024-11-07 11:22:44,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:44,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:44,743 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] [2024-11-07 11:22:44,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-07 11:22:44,743 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:44,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:44,743 INFO L85 PathProgramCache]: Analyzing trace with hash 469085493, now seen corresponding path program 10 times [2024-11-07 11:22:44,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:44,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181250328] [2024-11-07 11:22:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:44,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:44,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:45,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181250328] [2024-11-07 11:22:45,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181250328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:45,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:45,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:45,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990497468] [2024-11-07 11:22:45,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:45,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:45,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:45,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:45,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:45,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:45,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 331 transitions, 5148 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:45,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:45,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:45,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:46,140 INFO L124 PetriNetUnfolderBase]: 4478/7780 cut-off events. [2024-11-07 11:22:46,141 INFO L125 PetriNetUnfolderBase]: For 87280/87280 co-relation queries the response was YES. [2024-11-07 11:22:46,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45596 conditions, 7780 events. 4478/7780 cut-off events. For 87280/87280 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 54757 event pairs, 2413 based on Foata normal form. 15/7795 useless extension candidates. Maximal degree in co-relation 45519. Up to 6406 conditions per place. [2024-11-07 11:22:46,198 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 243 selfloop transitions, 100 changer transitions 6/350 dead transitions. [2024-11-07 11:22:46,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 350 transitions, 5924 flow [2024-11-07 11:22:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:46,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-11-07 11:22:46,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3531746031746032 [2024-11-07 11:22:46,199 INFO L175 Difference]: Start difference. First operand has 202 places, 331 transitions, 5148 flow. Second operand 9 states and 89 transitions. [2024-11-07 11:22:46,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 350 transitions, 5924 flow [2024-11-07 11:22:46,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 350 transitions, 5722 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:46,482 INFO L231 Difference]: Finished difference. Result has 202 places, 325 transitions, 5037 flow [2024-11-07 11:22:46,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4884, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5037, PETRI_PLACES=202, PETRI_TRANSITIONS=325} [2024-11-07 11:22:46,482 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 176 predicate places. [2024-11-07 11:22:46,482 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 325 transitions, 5037 flow [2024-11-07 11:22:46,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:46,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:46,482 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] [2024-11-07 11:22:46,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-07 11:22:46,483 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:46,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:46,483 INFO L85 PathProgramCache]: Analyzing trace with hash -872369295, now seen corresponding path program 6 times [2024-11-07 11:22:46,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:46,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196540221] [2024-11-07 11:22:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:46,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:46,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:46,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196540221] [2024-11-07 11:22:46,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196540221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:46,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:46,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:46,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478007214] [2024-11-07 11:22:46,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:46,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:46,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:46,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:46,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:46,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:46,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 325 transitions, 5037 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:46,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:46,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:46,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:47,812 INFO L124 PetriNetUnfolderBase]: 4472/7771 cut-off events. [2024-11-07 11:22:47,812 INFO L125 PetriNetUnfolderBase]: For 87898/87898 co-relation queries the response was YES. [2024-11-07 11:22:47,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45522 conditions, 7771 events. 4472/7771 cut-off events. For 87898/87898 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 54709 event pairs, 2433 based on Foata normal form. 12/7783 useless extension candidates. Maximal degree in co-relation 45445. Up to 6406 conditions per place. [2024-11-07 11:22:47,866 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 244 selfloop transitions, 97 changer transitions 6/348 dead transitions. [2024-11-07 11:22:47,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 348 transitions, 5922 flow [2024-11-07 11:22:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-07 11:22:47,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32936507936507936 [2024-11-07 11:22:47,867 INFO L175 Difference]: Start difference. First operand has 202 places, 325 transitions, 5037 flow. Second operand 9 states and 83 transitions. [2024-11-07 11:22:47,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 348 transitions, 5922 flow [2024-11-07 11:22:48,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 348 transitions, 5714 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-07 11:22:48,138 INFO L231 Difference]: Finished difference. Result has 201 places, 324 transitions, 5022 flow [2024-11-07 11:22:48,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4835, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5022, PETRI_PLACES=201, PETRI_TRANSITIONS=324} [2024-11-07 11:22:48,138 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 175 predicate places. [2024-11-07 11:22:48,138 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 324 transitions, 5022 flow [2024-11-07 11:22:48,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:48,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:48,138 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] [2024-11-07 11:22:48,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-07 11:22:48,139 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:48,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:48,139 INFO L85 PathProgramCache]: Analyzing trace with hash 646669503, now seen corresponding path program 7 times [2024-11-07 11:22:48,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:48,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653140003] [2024-11-07 11:22:48,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:48,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:48,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:48,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653140003] [2024-11-07 11:22:48,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653140003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:48,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:48,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:48,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450857144] [2024-11-07 11:22:48,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:48,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:48,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:48,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:48,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:48,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:48,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 324 transitions, 5022 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:48,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:48,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:48,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:49,582 INFO L124 PetriNetUnfolderBase]: 4454/7741 cut-off events. [2024-11-07 11:22:49,582 INFO L125 PetriNetUnfolderBase]: For 88108/88108 co-relation queries the response was YES. [2024-11-07 11:22:49,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45332 conditions, 7741 events. 4454/7741 cut-off events. For 88108/88108 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 54415 event pairs, 2461 based on Foata normal form. 12/7753 useless extension candidates. Maximal degree in co-relation 45255. Up to 6406 conditions per place. [2024-11-07 11:22:49,660 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 241 selfloop transitions, 99 changer transitions 3/344 dead transitions. [2024-11-07 11:22:49,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 344 transitions, 5843 flow [2024-11-07 11:22:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-11-07 11:22:49,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-07 11:22:49,662 INFO L175 Difference]: Start difference. First operand has 201 places, 324 transitions, 5022 flow. Second operand 9 states and 84 transitions. [2024-11-07 11:22:49,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 344 transitions, 5843 flow [2024-11-07 11:22:49,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 344 transitions, 5616 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-11-07 11:22:50,003 INFO L231 Difference]: Finished difference. Result has 197 places, 323 transitions, 4981 flow [2024-11-07 11:22:50,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4795, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4981, PETRI_PLACES=197, PETRI_TRANSITIONS=323} [2024-11-07 11:22:50,004 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 171 predicate places. [2024-11-07 11:22:50,004 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 323 transitions, 4981 flow [2024-11-07 11:22:50,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:50,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:50,004 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] [2024-11-07 11:22:50,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-07 11:22:50,004 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:50,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:50,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1975366923, now seen corresponding path program 8 times [2024-11-07 11:22:50,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:50,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931221502] [2024-11-07 11:22:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:50,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:50,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:50,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931221502] [2024-11-07 11:22:50,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931221502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:50,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:50,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:50,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98339832] [2024-11-07 11:22:50,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:50,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:50,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:50,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:50,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:50,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 323 transitions, 4981 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:50,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:50,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:50,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:51,279 INFO L124 PetriNetUnfolderBase]: 4423/7681 cut-off events. [2024-11-07 11:22:51,280 INFO L125 PetriNetUnfolderBase]: For 86688/86688 co-relation queries the response was YES. [2024-11-07 11:22:51,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44919 conditions, 7681 events. 4423/7681 cut-off events. For 86688/86688 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 53972 event pairs, 2426 based on Foata normal form. 12/7693 useless extension candidates. Maximal degree in co-relation 44846. Up to 6365 conditions per place. [2024-11-07 11:22:51,337 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 239 selfloop transitions, 96 changer transitions 3/339 dead transitions. [2024-11-07 11:22:51,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 339 transitions, 5723 flow [2024-11-07 11:22:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:51,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-07 11:22:51,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32936507936507936 [2024-11-07 11:22:51,338 INFO L175 Difference]: Start difference. First operand has 197 places, 323 transitions, 4981 flow. Second operand 9 states and 83 transitions. [2024-11-07 11:22:51,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 339 transitions, 5723 flow [2024-11-07 11:22:51,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 339 transitions, 5531 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:51,610 INFO L231 Difference]: Finished difference. Result has 197 places, 319 transitions, 4898 flow [2024-11-07 11:22:51,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4722, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4898, PETRI_PLACES=197, PETRI_TRANSITIONS=319} [2024-11-07 11:22:51,611 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 171 predicate places. [2024-11-07 11:22:51,611 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 319 transitions, 4898 flow [2024-11-07 11:22:51,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:51,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:51,611 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] [2024-11-07 11:22:51,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-07 11:22:51,612 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:51,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:51,612 INFO L85 PathProgramCache]: Analyzing trace with hash 536257337, now seen corresponding path program 11 times [2024-11-07 11:22:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:51,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067438546] [2024-11-07 11:22:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:51,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:51,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:51,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067438546] [2024-11-07 11:22:51,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067438546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:51,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563790718] [2024-11-07 11:22:51,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:22:51,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:51,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:51,831 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:51,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-07 11:22:51,909 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:22:51,909 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:51,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:22:51,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:51,982 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-07 11:22:51,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-07 11:22:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:51,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:52,072 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:22:52,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-07 11:22:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:52,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563790718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:52,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:52,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 20 [2024-11-07 11:22:52,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336532784] [2024-11-07 11:22:52,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:52,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 11:22:52,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:52,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 11:22:52,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-07 11:22:52,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:52,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 319 transitions, 4898 flow. Second operand has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:52,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:52,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:52,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:53,760 INFO L124 PetriNetUnfolderBase]: 6441/11224 cut-off events. [2024-11-07 11:22:53,760 INFO L125 PetriNetUnfolderBase]: For 114596/114596 co-relation queries the response was YES. [2024-11-07 11:22:53,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62776 conditions, 11224 events. 6441/11224 cut-off events. For 114596/114596 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 83963 event pairs, 2113 based on Foata normal form. 36/11260 useless extension candidates. Maximal degree in co-relation 62703. Up to 5071 conditions per place. [2024-11-07 11:22:53,836 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 371 selfloop transitions, 140 changer transitions 0/512 dead transitions. [2024-11-07 11:22:53,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 512 transitions, 8243 flow [2024-11-07 11:22:53,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:22:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:22:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-11-07 11:22:53,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-11-07 11:22:53,837 INFO L175 Difference]: Start difference. First operand has 197 places, 319 transitions, 4898 flow. Second operand 12 states and 138 transitions. [2024-11-07 11:22:53,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 512 transitions, 8243 flow [2024-11-07 11:22:54,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 512 transitions, 7997 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-07 11:22:54,211 INFO L231 Difference]: Finished difference. Result has 203 places, 343 transitions, 5568 flow [2024-11-07 11:22:54,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4706, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5568, PETRI_PLACES=203, PETRI_TRANSITIONS=343} [2024-11-07 11:22:54,212 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 177 predicate places. [2024-11-07 11:22:54,212 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 343 transitions, 5568 flow [2024-11-07 11:22:54,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:54,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:54,212 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] [2024-11-07 11:22:54,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-07 11:22:54,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-07 11:22:54,412 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:54,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:54,413 INFO L85 PathProgramCache]: Analyzing trace with hash 188378157, now seen corresponding path program 9 times [2024-11-07 11:22:54,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:54,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542653337] [2024-11-07 11:22:54,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:54,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:54,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:54,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542653337] [2024-11-07 11:22:54,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542653337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:54,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:54,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:22:54,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611153966] [2024-11-07 11:22:54,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:54,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:22:54,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:54,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:22:54,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:22:54,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:54,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 343 transitions, 5568 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:54,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:54,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:54,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:56,184 INFO L124 PetriNetUnfolderBase]: 6534/11382 cut-off events. [2024-11-07 11:22:56,184 INFO L125 PetriNetUnfolderBase]: For 135527/135527 co-relation queries the response was YES. [2024-11-07 11:22:56,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66793 conditions, 11382 events. 6534/11382 cut-off events. For 135527/135527 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 85515 event pairs, 3274 based on Foata normal form. 56/11438 useless extension candidates. Maximal degree in co-relation 66716. Up to 8783 conditions per place. [2024-11-07 11:22:56,260 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 295 selfloop transitions, 136 changer transitions 0/432 dead transitions. [2024-11-07 11:22:56,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 432 transitions, 7460 flow [2024-11-07 11:22:56,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:22:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:22:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-11-07 11:22:56,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-07 11:22:56,261 INFO L175 Difference]: Start difference. First operand has 203 places, 343 transitions, 5568 flow. Second operand 9 states and 102 transitions. [2024-11-07 11:22:56,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 432 transitions, 7460 flow [2024-11-07 11:22:56,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 432 transitions, 7218 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-11-07 11:22:56,747 INFO L231 Difference]: Finished difference. Result has 208 places, 359 transitions, 5994 flow [2024-11-07 11:22:56,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5352, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5994, PETRI_PLACES=208, PETRI_TRANSITIONS=359} [2024-11-07 11:22:56,748 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 182 predicate places. [2024-11-07 11:22:56,749 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 359 transitions, 5994 flow [2024-11-07 11:22:56,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:22:56,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:56,749 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] [2024-11-07 11:22:56,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-07 11:22:56,749 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:22:56,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:56,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1034053993, now seen corresponding path program 12 times [2024-11-07 11:22:56,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:56,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015469853] [2024-11-07 11:22:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:56,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:56,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:56,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015469853] [2024-11-07 11:22:56,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015469853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:56,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740126715] [2024-11-07 11:22:56,948 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:22:56,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:56,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:56,951 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:56,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-07 11:22:57,042 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-07 11:22:57,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:57,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:22:57,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:57,093 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-07 11:22:57,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-07 11:22:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:57,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:57,168 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:22:57,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:22:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:22:57,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740126715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:57,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:57,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2024-11-07 11:22:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666272030] [2024-11-07 11:22:57,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:57,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:22:57,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:57,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:22:57,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:22:57,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:22:57,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 359 transitions, 5994 flow. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 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 11:22:57,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:57,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:22:57,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:59,117 INFO L124 PetriNetUnfolderBase]: 6849/11931 cut-off events. [2024-11-07 11:22:59,117 INFO L125 PetriNetUnfolderBase]: For 146260/146260 co-relation queries the response was YES. [2024-11-07 11:22:59,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70723 conditions, 11931 events. 6849/11931 cut-off events. For 146260/146260 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 90577 event pairs, 3405 based on Foata normal form. 54/11985 useless extension candidates. Maximal degree in co-relation 70644. Up to 8660 conditions per place. [2024-11-07 11:22:59,281 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 290 selfloop transitions, 145 changer transitions 0/436 dead transitions. [2024-11-07 11:22:59,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 436 transitions, 7765 flow [2024-11-07 11:22:59,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:22:59,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:22:59,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-11-07 11:22:59,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-11-07 11:22:59,282 INFO L175 Difference]: Start difference. First operand has 208 places, 359 transitions, 5994 flow. Second operand 10 states and 108 transitions. [2024-11-07 11:22:59,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 436 transitions, 7765 flow [2024-11-07 11:23:00,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 436 transitions, 7428 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-11-07 11:23:00,022 INFO L231 Difference]: Finished difference. Result has 214 places, 369 transitions, 6196 flow [2024-11-07 11:23:00,023 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5660, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6196, PETRI_PLACES=214, PETRI_TRANSITIONS=369} [2024-11-07 11:23:00,023 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 188 predicate places. [2024-11-07 11:23:00,023 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 369 transitions, 6196 flow [2024-11-07 11:23:00,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 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 11:23:00,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:00,023 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] [2024-11-07 11:23:00,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-07 11:23:00,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:00,224 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:00,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:00,224 INFO L85 PathProgramCache]: Analyzing trace with hash -62205495, now seen corresponding path program 13 times [2024-11-07 11:23:00,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:00,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422983761] [2024-11-07 11:23:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:00,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:00,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:00,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422983761] [2024-11-07 11:23:00,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422983761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:00,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035181019] [2024-11-07 11:23:00,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:23:00,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:00,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:00,458 INFO L229 MonitoredProcess]: Starting monitored process 21 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 11:23:00,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-07 11:23:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:00,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:23:00,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:00,624 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-07 11:23:00,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-07 11:23:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:00,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:00,707 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:23:00,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-07 11:23:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:00,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035181019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:00,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:00,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-07 11:23:00,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139960864] [2024-11-07 11:23:00,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:00,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 11:23:00,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:00,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 11:23:00,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-07 11:23:00,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:23:00,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 369 transitions, 6196 flow. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 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 11:23:00,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:00,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:23:00,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:02,372 INFO L124 PetriNetUnfolderBase]: 6660/11580 cut-off events. [2024-11-07 11:23:02,373 INFO L125 PetriNetUnfolderBase]: For 134957/134957 co-relation queries the response was YES. [2024-11-07 11:23:02,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68675 conditions, 11580 events. 6660/11580 cut-off events. For 134957/134957 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 86811 event pairs, 1139 based on Foata normal form. 54/11634 useless extension candidates. Maximal degree in co-relation 68594. Up to 8354 conditions per place. [2024-11-07 11:23:02,486 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 326 selfloop transitions, 145 changer transitions 2/474 dead transitions. [2024-11-07 11:23:02,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 474 transitions, 8316 flow [2024-11-07 11:23:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:23:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:23:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-11-07 11:23:02,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-07 11:23:02,487 INFO L175 Difference]: Start difference. First operand has 214 places, 369 transitions, 6196 flow. Second operand 10 states and 100 transitions. [2024-11-07 11:23:02,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 474 transitions, 8316 flow [2024-11-07 11:23:03,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 474 transitions, 8117 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-11-07 11:23:03,343 INFO L231 Difference]: Finished difference. Result has 219 places, 373 transitions, 6413 flow [2024-11-07 11:23:03,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5999, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6413, PETRI_PLACES=219, PETRI_TRANSITIONS=373} [2024-11-07 11:23:03,344 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 193 predicate places. [2024-11-07 11:23:03,344 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 373 transitions, 6413 flow [2024-11-07 11:23:03,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 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 11:23:03,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:03,344 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] [2024-11-07 11:23:03,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-07 11:23:03,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:03,545 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:03,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:03,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1589112913, now seen corresponding path program 10 times [2024-11-07 11:23:03,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:03,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165499949] [2024-11-07 11:23:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:03,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:03,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:03,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165499949] [2024-11-07 11:23:03,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165499949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:23:03,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:23:03,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:23:03,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973908749] [2024-11-07 11:23:03,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:03,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:23:03,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:03,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:23:03,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:23:03,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:23:03,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 373 transitions, 6413 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:23:03,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:03,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:23:03,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:05,333 INFO L124 PetriNetUnfolderBase]: 6660/11592 cut-off events. [2024-11-07 11:23:05,333 INFO L125 PetriNetUnfolderBase]: For 140719/140719 co-relation queries the response was YES. [2024-11-07 11:23:05,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69681 conditions, 11592 events. 6660/11592 cut-off events. For 140719/140719 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 87023 event pairs, 3311 based on Foata normal form. 12/11604 useless extension candidates. Maximal degree in co-relation 69598. Up to 8984 conditions per place. [2024-11-07 11:23:05,427 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 304 selfloop transitions, 137 changer transitions 3/445 dead transitions. [2024-11-07 11:23:05,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 445 transitions, 8014 flow [2024-11-07 11:23:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-11-07 11:23:05,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3492063492063492 [2024-11-07 11:23:05,428 INFO L175 Difference]: Start difference. First operand has 219 places, 373 transitions, 6413 flow. Second operand 9 states and 88 transitions. [2024-11-07 11:23:05,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 445 transitions, 8014 flow [2024-11-07 11:23:05,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 445 transitions, 7672 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-11-07 11:23:05,981 INFO L231 Difference]: Finished difference. Result has 221 places, 373 transitions, 6351 flow [2024-11-07 11:23:05,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6071, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6351, PETRI_PLACES=221, PETRI_TRANSITIONS=373} [2024-11-07 11:23:05,982 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 195 predicate places. [2024-11-07 11:23:05,982 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 373 transitions, 6351 flow [2024-11-07 11:23:05,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:23:05,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:05,982 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] [2024-11-07 11:23:05,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-07 11:23:05,982 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:05,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:05,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1413500475, now seen corresponding path program 14 times [2024-11-07 11:23:05,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:05,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803323389] [2024-11-07 11:23:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:05,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:06,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:06,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803323389] [2024-11-07 11:23:06,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803323389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:23:06,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:23:06,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:23:06,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841349398] [2024-11-07 11:23:06,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:06,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:23:06,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:23:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:23:06,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:23:06,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 373 transitions, 6351 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:23:06,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:06,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:23:06,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:07,717 INFO L124 PetriNetUnfolderBase]: 6648/11583 cut-off events. [2024-11-07 11:23:07,718 INFO L125 PetriNetUnfolderBase]: For 136357/136357 co-relation queries the response was YES. [2024-11-07 11:23:07,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69248 conditions, 11583 events. 6648/11583 cut-off events. For 136357/136357 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 87164 event pairs, 3470 based on Foata normal form. 15/11598 useless extension candidates. Maximal degree in co-relation 69165. Up to 8984 conditions per place. [2024-11-07 11:23:07,829 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 277 selfloop transitions, 133 changer transitions 5/416 dead transitions. [2024-11-07 11:23:07,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 416 transitions, 7533 flow [2024-11-07 11:23:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-07 11:23:07,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-11-07 11:23:07,830 INFO L175 Difference]: Start difference. First operand has 221 places, 373 transitions, 6351 flow. Second operand 9 states and 87 transitions. [2024-11-07 11:23:07,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 416 transitions, 7533 flow [2024-11-07 11:23:08,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 416 transitions, 7251 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-07 11:23:08,620 INFO L231 Difference]: Finished difference. Result has 222 places, 373 transitions, 6349 flow [2024-11-07 11:23:08,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6077, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6349, PETRI_PLACES=222, PETRI_TRANSITIONS=373} [2024-11-07 11:23:08,621 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 196 predicate places. [2024-11-07 11:23:08,621 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 373 transitions, 6349 flow [2024-11-07 11:23:08,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:23:08,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:08,621 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] [2024-11-07 11:23:08,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-07 11:23:08,621 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:08,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:08,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1216445901, now seen corresponding path program 15 times [2024-11-07 11:23:08,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:08,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650964498] [2024-11-07 11:23:08,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:08,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:08,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:08,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650964498] [2024-11-07 11:23:08,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650964498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:23:08,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:23:08,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:23:08,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249644009] [2024-11-07 11:23:08,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:08,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:23:08,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:08,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:23:08,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:23:08,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:23:08,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 373 transitions, 6349 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:23:08,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:08,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:23:08,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:10,775 INFO L124 PetriNetUnfolderBase]: 6654/11595 cut-off events. [2024-11-07 11:23:10,775 INFO L125 PetriNetUnfolderBase]: For 135760/135760 co-relation queries the response was YES. [2024-11-07 11:23:10,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69170 conditions, 11595 events. 6654/11595 cut-off events. For 135760/135760 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 87196 event pairs, 3495 based on Foata normal form. 15/11610 useless extension candidates. Maximal degree in co-relation 69086. Up to 8990 conditions per place. [2024-11-07 11:23:10,910 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 280 selfloop transitions, 137 changer transitions 5/423 dead transitions. [2024-11-07 11:23:10,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 423 transitions, 7716 flow [2024-11-07 11:23:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-11-07 11:23:10,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-11-07 11:23:10,912 INFO L175 Difference]: Start difference. First operand has 222 places, 373 transitions, 6349 flow. Second operand 9 states and 92 transitions. [2024-11-07 11:23:10,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 423 transitions, 7716 flow [2024-11-07 11:23:11,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 423 transitions, 7432 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-07 11:23:11,618 INFO L231 Difference]: Finished difference. Result has 224 places, 379 transitions, 6494 flow [2024-11-07 11:23:11,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6083, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6494, PETRI_PLACES=224, PETRI_TRANSITIONS=379} [2024-11-07 11:23:11,618 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 198 predicate places. [2024-11-07 11:23:11,618 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 379 transitions, 6494 flow [2024-11-07 11:23:11,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:23:11,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:11,618 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] [2024-11-07 11:23:11,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-07 11:23:11,619 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:11,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:11,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1813782559, now seen corresponding path program 16 times [2024-11-07 11:23:11,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:11,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203865582] [2024-11-07 11:23:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:11,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:11,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:11,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203865582] [2024-11-07 11:23:11,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203865582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:23:11,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:23:11,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:23:11,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435113305] [2024-11-07 11:23:11,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:11,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:23:11,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:11,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:23:11,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:23:11,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:23:11,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 379 transitions, 6494 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:23:11,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:11,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:23:11,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:13,600 INFO L124 PetriNetUnfolderBase]: 6633/11559 cut-off events. [2024-11-07 11:23:13,600 INFO L125 PetriNetUnfolderBase]: For 135040/135040 co-relation queries the response was YES. [2024-11-07 11:23:13,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68960 conditions, 11559 events. 6633/11559 cut-off events. For 135040/135040 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 87008 event pairs, 3335 based on Foata normal form. 15/11574 useless extension candidates. Maximal degree in co-relation 68874. Up to 8975 conditions per place. [2024-11-07 11:23:13,682 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 302 selfloop transitions, 136 changer transitions 8/447 dead transitions. [2024-11-07 11:23:13,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 447 transitions, 8076 flow [2024-11-07 11:23:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:13,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-07 11:23:13,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3412698412698413 [2024-11-07 11:23:13,683 INFO L175 Difference]: Start difference. First operand has 224 places, 379 transitions, 6494 flow. Second operand 9 states and 86 transitions. [2024-11-07 11:23:13,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 447 transitions, 8076 flow [2024-11-07 11:23:14,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 447 transitions, 7802 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-07 11:23:14,277 INFO L231 Difference]: Finished difference. Result has 227 places, 379 transitions, 6508 flow [2024-11-07 11:23:14,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6201, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6508, PETRI_PLACES=227, PETRI_TRANSITIONS=379} [2024-11-07 11:23:14,277 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 201 predicate places. [2024-11-07 11:23:14,277 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 379 transitions, 6508 flow [2024-11-07 11:23:14,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:23:14,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:14,278 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] [2024-11-07 11:23:14,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-07 11:23:14,278 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:14,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:14,278 INFO L85 PathProgramCache]: Analyzing trace with hash 222114165, now seen corresponding path program 17 times [2024-11-07 11:23:14,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:14,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85648977] [2024-11-07 11:23:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:14,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:14,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:14,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85648977] [2024-11-07 11:23:14,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85648977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:14,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207554863] [2024-11-07 11:23:14,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:23:14,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:14,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:14,604 INFO L229 MonitoredProcess]: Starting monitored process 22 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 11:23:14,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-07 11:23:14,691 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:23:14,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:14,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:23:14,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:14,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:14,873 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:23:14,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-07 11:23:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:14,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207554863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:14,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:14,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-07 11:23:14,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911206603] [2024-11-07 11:23:14,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:14,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:23:14,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:14,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:23:14,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:23:14,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:23:14,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 379 transitions, 6508 flow. Second operand has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:14,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:14,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:23:14,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:17,159 INFO L124 PetriNetUnfolderBase]: 7219/12581 cut-off events. [2024-11-07 11:23:17,159 INFO L125 PetriNetUnfolderBase]: For 143306/143306 co-relation queries the response was YES. [2024-11-07 11:23:17,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74002 conditions, 12581 events. 7219/12581 cut-off events. For 143306/143306 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 95618 event pairs, 2649 based on Foata normal form. 36/12617 useless extension candidates. Maximal degree in co-relation 73914. Up to 6715 conditions per place. [2024-11-07 11:23:17,261 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 369 selfloop transitions, 162 changer transitions 2/534 dead transitions. [2024-11-07 11:23:17,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 534 transitions, 9318 flow [2024-11-07 11:23:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:23:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:23:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-11-07 11:23:17,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2024-11-07 11:23:17,262 INFO L175 Difference]: Start difference. First operand has 227 places, 379 transitions, 6508 flow. Second operand 13 states and 126 transitions. [2024-11-07 11:23:17,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 534 transitions, 9318 flow [2024-11-07 11:23:17,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 534 transitions, 8999 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-07 11:23:17,842 INFO L231 Difference]: Finished difference. Result has 234 places, 392 transitions, 6876 flow [2024-11-07 11:23:17,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6189, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6876, PETRI_PLACES=234, PETRI_TRANSITIONS=392} [2024-11-07 11:23:17,842 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 208 predicate places. [2024-11-07 11:23:17,842 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 392 transitions, 6876 flow [2024-11-07 11:23:17,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:23:17,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:17,843 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] [2024-11-07 11:23:17,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-07 11:23:18,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-07 11:23:18,043 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:18,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:18,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1016050527, now seen corresponding path program 11 times [2024-11-07 11:23:18,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:18,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521101947] [2024-11-07 11:23:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:18,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:18,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:18,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521101947] [2024-11-07 11:23:18,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521101947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:23:18,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:23:18,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:23:18,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982385875] [2024-11-07 11:23:18,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:18,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:23:18,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:23:18,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:23:18,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:23:18,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 392 transitions, 6876 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:23:18,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:18,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:23:18,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:20,417 INFO L124 PetriNetUnfolderBase]: 7207/12569 cut-off events. [2024-11-07 11:23:20,417 INFO L125 PetriNetUnfolderBase]: For 152326/152326 co-relation queries the response was YES. [2024-11-07 11:23:20,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75615 conditions, 12569 events. 7207/12569 cut-off events. For 152326/152326 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 96375 event pairs, 3646 based on Foata normal form. 12/12581 useless extension candidates. Maximal degree in co-relation 75524. Up to 10028 conditions per place. [2024-11-07 11:23:20,556 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 333 selfloop transitions, 129 changer transitions 10/473 dead transitions. [2024-11-07 11:23:20,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 473 transitions, 8585 flow [2024-11-07 11:23:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:23:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:23:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-07 11:23:20,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-11-07 11:23:20,557 INFO L175 Difference]: Start difference. First operand has 234 places, 392 transitions, 6876 flow. Second operand 9 states and 87 transitions. [2024-11-07 11:23:20,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 473 transitions, 8585 flow [2024-11-07 11:23:21,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 473 transitions, 8368 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-07 11:23:21,253 INFO L231 Difference]: Finished difference. Result has 234 places, 385 transitions, 6769 flow [2024-11-07 11:23:21,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6579, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6769, PETRI_PLACES=234, PETRI_TRANSITIONS=385} [2024-11-07 11:23:21,254 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 208 predicate places. [2024-11-07 11:23:21,254 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 385 transitions, 6769 flow [2024-11-07 11:23:21,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:23:21,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:21,255 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] [2024-11-07 11:23:21,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-07 11:23:21,255 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:21,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash 213244371, now seen corresponding path program 18 times [2024-11-07 11:23:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:21,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186786671] [2024-11-07 11:23:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:21,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:21,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186786671] [2024-11-07 11:23:21,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186786671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:21,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832414672] [2024-11-07 11:23:21,574 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:23:21,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:21,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:21,576 INFO L229 MonitoredProcess]: Starting monitored process 23 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 11:23:21,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-07 11:23:21,666 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-07 11:23:21,666 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:21,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:23:21,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:21,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:21,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-07 11:23:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:21,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:21,802 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:23:21,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:23:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:21,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832414672] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:21,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:23:21,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2024-11-07 11:23:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133076744] [2024-11-07 11:23:21,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:21,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:23:21,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:21,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:23:21,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-07 11:23:21,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:23:21,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 385 transitions, 6769 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 11:23:21,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:21,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:23:21,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:24,263 INFO L124 PetriNetUnfolderBase]: 7399/12953 cut-off events. [2024-11-07 11:23:24,263 INFO L125 PetriNetUnfolderBase]: For 160339/160339 co-relation queries the response was YES. [2024-11-07 11:23:24,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77970 conditions, 12953 events. 7399/12953 cut-off events. For 160339/160339 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 100262 event pairs, 3887 based on Foata normal form. 54/13007 useless extension candidates. Maximal degree in co-relation 77879. Up to 10074 conditions per place. [2024-11-07 11:23:24,359 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 311 selfloop transitions, 132 changer transitions 4/448 dead transitions. [2024-11-07 11:23:24,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 448 transitions, 8337 flow [2024-11-07 11:23:24,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:23:24,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:23:24,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-11-07 11:23:24,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4744897959183674 [2024-11-07 11:23:24,360 INFO L175 Difference]: Start difference. First operand has 234 places, 385 transitions, 6769 flow. Second operand 7 states and 93 transitions. [2024-11-07 11:23:24,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 448 transitions, 8337 flow [2024-11-07 11:23:25,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 448 transitions, 8065 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-07 11:23:25,075 INFO L231 Difference]: Finished difference. Result has 232 places, 393 transitions, 6993 flow [2024-11-07 11:23:25,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6501, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6993, PETRI_PLACES=232, PETRI_TRANSITIONS=393} [2024-11-07 11:23:25,075 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 206 predicate places. [2024-11-07 11:23:25,076 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 393 transitions, 6993 flow [2024-11-07 11:23:25,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 11:23:25,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:25,076 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] [2024-11-07 11:23:25,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-07 11:23:25,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-07 11:23:25,277 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:25,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:25,277 INFO L85 PathProgramCache]: Analyzing trace with hash -63705097, now seen corresponding path program 19 times [2024-11-07 11:23:25,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:25,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994500307] [2024-11-07 11:23:25,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:25,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:25,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:25,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994500307] [2024-11-07 11:23:25,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994500307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:25,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149756118] [2024-11-07 11:23:25,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:23:25,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:25,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:25,466 INFO L229 MonitoredProcess]: Starting monitored process 24 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 11:23:25,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-07 11:23:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:25,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:23:25,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:25,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:25,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-07 11:23:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:25,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:25,668 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-07 11:23:25,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-07 11:23:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:25,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149756118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:23:25,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:23:25,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-07 11:23:25,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331304151] [2024-11-07 11:23:25,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:23:25,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:23:25,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:25,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:23:25,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:23:25,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:23:25,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 393 transitions, 6993 flow. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 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 11:23:25,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:25,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:23:25,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:27,871 INFO L124 PetriNetUnfolderBase]: 7210/12602 cut-off events. [2024-11-07 11:23:27,872 INFO L125 PetriNetUnfolderBase]: For 155056/155056 co-relation queries the response was YES. [2024-11-07 11:23:27,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75739 conditions, 12602 events. 7210/12602 cut-off events. For 155056/155056 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 96743 event pairs, 3758 based on Foata normal form. 54/12655 useless extension candidates. Maximal degree in co-relation 75647. Up to 9833 conditions per place. [2024-11-07 11:23:27,961 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 299 selfloop transitions, 149 changer transitions 6/455 dead transitions. [2024-11-07 11:23:27,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 455 transitions, 8408 flow [2024-11-07 11:23:27,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:23:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:23:27,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 129 transitions. [2024-11-07 11:23:27,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3543956043956044 [2024-11-07 11:23:27,962 INFO L175 Difference]: Start difference. First operand has 232 places, 393 transitions, 6993 flow. Second operand 13 states and 129 transitions. [2024-11-07 11:23:27,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 455 transitions, 8408 flow [2024-11-07 11:23:28,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 455 transitions, 8157 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-07 11:23:28,661 INFO L231 Difference]: Finished difference. Result has 242 places, 393 transitions, 6988 flow [2024-11-07 11:23:28,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6688, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6988, PETRI_PLACES=242, PETRI_TRANSITIONS=393} [2024-11-07 11:23:28,661 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 216 predicate places. [2024-11-07 11:23:28,662 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 393 transitions, 6988 flow [2024-11-07 11:23:28,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 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 11:23:28,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:28,662 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] [2024-11-07 11:23:28,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-07 11:23:28,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-07 11:23:28,862 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:28,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:28,863 INFO L85 PathProgramCache]: Analyzing trace with hash 68757571, now seen corresponding path program 12 times [2024-11-07 11:23:28,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:28,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202187536] [2024-11-07 11:23:28,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:28,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:29,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:29,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:29,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202187536] [2024-11-07 11:23:29,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202187536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:29,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405926575] [2024-11-07 11:23:29,227 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:23:29,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:29,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:29,230 INFO L229 MonitoredProcess]: Starting monitored process 25 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 11:23:29,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-07 11:23:29,333 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-07 11:23:29,333 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:23:29,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:23:29,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:29,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:29,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-07 11:23:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:29,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:23:29,497 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-07 11:23:29,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-07 11:23:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:29,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405926575] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:29,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:23:29,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 18 [2024-11-07 11:23:29,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678140870] [2024-11-07 11:23:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:29,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:23:29,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:29,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:23:29,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:23:29,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:23:29,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 393 transitions, 6988 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 11:23:29,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:29,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:23:29,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:31,899 INFO L124 PetriNetUnfolderBase]: 7406/12993 cut-off events. [2024-11-07 11:23:31,899 INFO L125 PetriNetUnfolderBase]: For 157169/157169 co-relation queries the response was YES. [2024-11-07 11:23:31,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78182 conditions, 12993 events. 7406/12993 cut-off events. For 157169/157169 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 100875 event pairs, 3720 based on Foata normal form. 56/13049 useless extension candidates. Maximal degree in co-relation 78089. Up to 10142 conditions per place. [2024-11-07 11:23:32,033 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 344 selfloop transitions, 137 changer transitions 2/484 dead transitions. [2024-11-07 11:23:32,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 484 transitions, 8983 flow [2024-11-07 11:23:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:23:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:23:32,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-11-07 11:23:32,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44387755102040816 [2024-11-07 11:23:32,034 INFO L175 Difference]: Start difference. First operand has 242 places, 393 transitions, 6988 flow. Second operand 7 states and 87 transitions. [2024-11-07 11:23:32,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 484 transitions, 8983 flow [2024-11-07 11:23:32,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 484 transitions, 8651 flow, removed 28 selfloop flow, removed 18 redundant places. [2024-11-07 11:23:32,929 INFO L231 Difference]: Finished difference. Result has 231 places, 400 transitions, 7131 flow [2024-11-07 11:23:32,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6668, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7131, PETRI_PLACES=231, PETRI_TRANSITIONS=400} [2024-11-07 11:23:32,930 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 205 predicate places. [2024-11-07 11:23:32,930 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 400 transitions, 7131 flow [2024-11-07 11:23:32,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 11:23:32,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:32,930 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] [2024-11-07 11:23:32,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-07 11:23:33,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-07 11:23:33,131 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:23:33,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:33,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1092287649, now seen corresponding path program 13 times [2024-11-07 11:23:33,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:33,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716059109] [2024-11-07 11:23:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:33,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:33,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:33,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716059109] [2024-11-07 11:23:33,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716059109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:23:33,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:23:33,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 11:23:33,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067718133] [2024-11-07 11:23:33,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:33,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 11:23:33,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:33,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 11:23:33,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-07 11:23:33,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-07 11:23:33,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 400 transitions, 7131 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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 11:23:33,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:33,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-07 11:23:33,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand