./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/weaver/popl20-prod-cons.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', '7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-prod-cons.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 7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:31:18,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:31:18,342 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:31:18,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:31:18,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:31:18,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:31:18,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:31:18,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:31:18,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:31:18,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:31:18,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:31:18,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:31:18,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:31:18,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:31:18,376 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:31:18,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:31:18,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:31:18,376 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:31:18,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:31:18,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:31:18,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:31:18,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:31:18,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:31:18,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:31:18,377 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:31:18,377 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:31:18,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:31:18,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:31:18,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:31:18,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:31:18,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:31:18,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:31:18,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:31:18,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:31:18,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:31:18,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:31:18,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:31:18,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:31:18,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:31:18,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:31:18,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:31:18,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:31:18,379 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 -> 7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0 [2024-11-07 11:31:18,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:31:18,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:31:18,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:31:18,604 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:31:18,604 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:31:18,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2024-11-07 11:31:19,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:31:20,021 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:31:20,021 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2024-11-07 11:31:20,029 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8624e7c74/267cab00843d4a8f8af23c508ce75e60/FLAG12456a4fc [2024-11-07 11:31:20,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8624e7c74/267cab00843d4a8f8af23c508ce75e60 [2024-11-07 11:31:20,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:31:20,380 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:31:20,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:31:20,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:31:20,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:31:20,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5671c698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20, skipping insertion in model container [2024-11-07 11:31:20,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:31:20,523 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3095,3108] [2024-11-07 11:31:20,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:31:20,540 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:31:20,555 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3095,3108] [2024-11-07 11:31:20,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:31:20,568 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:31:20,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20 WrapperNode [2024-11-07 11:31:20,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:31:20,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:31:20,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:31:20,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:31:20,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,602 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 156 [2024-11-07 11:31:20,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:31:20,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:31:20,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:31:20,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:31:20,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,614 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,627 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-07 11:31:20,627 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:31:20,636 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:31:20,636 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:31:20,636 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:31:20,637 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (1/1) ... [2024-11-07 11:31:20,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:31:20,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:20,661 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 11:31:20,669 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 11:31:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:31:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:31:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:31:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:31:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:31:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 11:31:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 11:31:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:31:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:31:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:31:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:31:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 11:31:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 11:31:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:31:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:31:20,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:31:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:31:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:31:20,687 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 11:31:20,757 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:31:20,759 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:31:21,000 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:31:21,001 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:31:21,180 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:31:21,180 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-07 11:31:21,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:31:21 BoogieIcfgContainer [2024-11-07 11:31:21,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:31:21,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:31:21,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:31:21,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:31:21,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:31:20" (1/3) ... [2024-11-07 11:31:21,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399e5486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:31:21, skipping insertion in model container [2024-11-07 11:31:21,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:20" (2/3) ... [2024-11-07 11:31:21,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399e5486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:31:21, skipping insertion in model container [2024-11-07 11:31:21,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:31:21" (3/3) ... [2024-11-07 11:31:21,187 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2024-11-07 11:31:21,197 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:31:21,198 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:31:21,198 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:31:21,236 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 11:31:21,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 95 flow [2024-11-07 11:31:21,311 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-07 11:31:21,317 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:31:21,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 4/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-11-07 11:31:21,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 95 flow [2024-11-07 11:31:21,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 33 transitions, 84 flow [2024-11-07 11:31:21,330 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:31:21,337 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;@76342d70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:31:21,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 11:31:21,346 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:31:21,346 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2024-11-07 11:31:21,346 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:31:21,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:21,347 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 11:31:21,348 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:21,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1998691310, now seen corresponding path program 1 times [2024-11-07 11:31:21,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:21,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381740946] [2024-11-07 11:31:21,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:21,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:21,798 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 11:31:21,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:21,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381740946] [2024-11-07 11:31:21,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381740946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:21,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:21,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:31:21,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428098397] [2024-11-07 11:31:21,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:21,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:31:21,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:21,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:31:21,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:31:21,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-07 11:31:21,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 11:31:21,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:21,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-07 11:31:21,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:22,094 INFO L124 PetriNetUnfolderBase]: 778/1290 cut-off events. [2024-11-07 11:31:22,094 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-07 11:31:22,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2582 conditions, 1290 events. 778/1290 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6682 event pairs, 296 based on Foata normal form. 2/1249 useless extension candidates. Maximal degree in co-relation 2346. Up to 517 conditions per place. [2024-11-07 11:31:22,103 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 46 selfloop transitions, 4 changer transitions 3/62 dead transitions. [2024-11-07 11:31:22,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 269 flow [2024-11-07 11:31:22,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:31:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:31:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-07 11:31:22,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-11-07 11:31:22,116 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 84 flow. Second operand 5 states and 115 transitions. [2024-11-07 11:31:22,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 269 flow [2024-11-07 11:31:22,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 62 transitions, 243 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 11:31:22,123 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 96 flow [2024-11-07 11:31:22,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-11-07 11:31:22,126 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2024-11-07 11:31:22,126 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 96 flow [2024-11-07 11:31:22,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 11:31:22,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:22,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:22,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:31:22,127 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:22,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:22,127 INFO L85 PathProgramCache]: Analyzing trace with hash 832852343, now seen corresponding path program 1 times [2024-11-07 11:31:22,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:22,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374087426] [2024-11-07 11:31:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:22,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:22,178 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 11:31:22,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:22,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374087426] [2024-11-07 11:31:22,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374087426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:22,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:31:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045606858] [2024-11-07 11:31:22,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:22,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:31:22,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:22,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:31:22,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:31:22,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-11-07 11:31:22,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 11:31:22,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:22,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-11-07 11:31:22,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:22,303 INFO L124 PetriNetUnfolderBase]: 566/1077 cut-off events. [2024-11-07 11:31:22,303 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-07 11:31:22,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 1077 events. 566/1077 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5616 event pairs, 231 based on Foata normal form. 18/1034 useless extension candidates. Maximal degree in co-relation 1223. Up to 614 conditions per place. [2024-11-07 11:31:22,308 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 27 selfloop transitions, 2 changer transitions 7/49 dead transitions. [2024-11-07 11:31:22,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 201 flow [2024-11-07 11:31:22,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:31:22,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:31:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-07 11:31:22,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2024-11-07 11:31:22,310 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 96 flow. Second operand 3 states and 79 transitions. [2024-11-07 11:31:22,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 201 flow [2024-11-07 11:31:22,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 49 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 11:31:22,311 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 104 flow [2024-11-07 11:31:22,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-11-07 11:31:22,312 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-11-07 11:31:22,312 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 104 flow [2024-11-07 11:31:22,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 11:31:22,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:22,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:22,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:31:22,313 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:22,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:22,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1617767189, now seen corresponding path program 1 times [2024-11-07 11:31:22,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:22,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536552572] [2024-11-07 11:31:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:22,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:22,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:22,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536552572] [2024-11-07 11:31:22,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536552572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:22,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:22,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:31:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348451283] [2024-11-07 11:31:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:22,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:31:22,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:22,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:31:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:31:22,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-11-07 11:31:22,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 11:31:22,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:22,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-11-07 11:31:22,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:22,567 INFO L124 PetriNetUnfolderBase]: 679/1306 cut-off events. [2024-11-07 11:31:22,567 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-07 11:31:22,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2604 conditions, 1306 events. 679/1306 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7777 event pairs, 580 based on Foata normal form. 15/1162 useless extension candidates. Maximal degree in co-relation 1526. Up to 823 conditions per place. [2024-11-07 11:31:22,573 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 22 selfloop transitions, 2 changer transitions 16/53 dead transitions. [2024-11-07 11:31:22,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 226 flow [2024-11-07 11:31:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:31:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:31:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-07 11:31:22,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-11-07 11:31:22,575 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 104 flow. Second operand 4 states and 96 transitions. [2024-11-07 11:31:22,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 226 flow [2024-11-07 11:31:22,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:31:22,576 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 116 flow [2024-11-07 11:31:22,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-11-07 11:31:22,577 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2024-11-07 11:31:22,577 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 116 flow [2024-11-07 11:31:22,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 11:31:22,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:22,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:22,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:31:22,577 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:22,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:22,577 INFO L85 PathProgramCache]: Analyzing trace with hash -450042783, now seen corresponding path program 1 times [2024-11-07 11:31:22,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:22,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16698959] [2024-11-07 11:31:22,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:22,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:22,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:22,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16698959] [2024-11-07 11:31:22,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16698959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:22,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020957765] [2024-11-07 11:31:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:22,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:22,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:22,723 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 11:31:22,725 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 11:31:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:22,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-07 11:31:22,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:22,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 11:31:23,124 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 11:31:23,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:23,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-07 11:31:23,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:31:23,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 50 treesize of output 46 [2024-11-07 11:31:23,607 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 11:31:23,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020957765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:23,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:23,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 10, 10] total 20 [2024-11-07 11:31:23,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836670138] [2024-11-07 11:31:23,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:23,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 11:31:23,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:23,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 11:31:23,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-07 11:31:23,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-11-07 11:31:23,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 116 flow. Second operand has 21 states, 21 states have (on average 12.857142857142858) internal successors, (270), 21 states have internal predecessors, (270), 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 11:31:23,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:23,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-11-07 11:31:23,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:26,972 INFO L124 PetriNetUnfolderBase]: 5178/8594 cut-off events. [2024-11-07 11:31:26,972 INFO L125 PetriNetUnfolderBase]: For 2223/2223 co-relation queries the response was YES. [2024-11-07 11:31:26,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18901 conditions, 8594 events. 5178/8594 cut-off events. For 2223/2223 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 54768 event pairs, 482 based on Foata normal form. 565/8638 useless extension candidates. Maximal degree in co-relation 18885. Up to 1207 conditions per place. [2024-11-07 11:31:27,002 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 339 selfloop transitions, 109 changer transitions 151/605 dead transitions. [2024-11-07 11:31:27,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 605 transitions, 2833 flow [2024-11-07 11:31:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-07 11:31:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2024-11-07 11:31:27,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 1208 transitions. [2024-11-07 11:31:27,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49467649467649466 [2024-11-07 11:31:27,008 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 116 flow. Second operand 66 states and 1208 transitions. [2024-11-07 11:31:27,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 605 transitions, 2833 flow [2024-11-07 11:31:27,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 605 transitions, 2801 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-07 11:31:27,019 INFO L231 Difference]: Finished difference. Result has 150 places, 167 transitions, 1094 flow [2024-11-07 11:31:27,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=1094, PETRI_PLACES=150, PETRI_TRANSITIONS=167} [2024-11-07 11:31:27,020 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 111 predicate places. [2024-11-07 11:31:27,020 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 167 transitions, 1094 flow [2024-11-07 11:31:27,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.857142857142858) internal successors, (270), 21 states have internal predecessors, (270), 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 11:31:27,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:27,020 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:27,034 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 11:31:27,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:27,221 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:27,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:27,222 INFO L85 PathProgramCache]: Analyzing trace with hash -285273189, now seen corresponding path program 2 times [2024-11-07 11:31:27,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:27,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295004367] [2024-11-07 11:31:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:27,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:28,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:28,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295004367] [2024-11-07 11:31:28,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295004367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:28,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014636146] [2024-11-07 11:31:28,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:31:28,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:28,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:28,396 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 11:31:28,397 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 11:31:28,471 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:31:28,471 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:28,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-07 11:31:28,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:28,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:29,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:31:29,016 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 28 treesize of output 20 [2024-11-07 11:31:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 11:31:29,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014636146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:29,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:29,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 33 [2024-11-07 11:31:29,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176108087] [2024-11-07 11:31:29,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:29,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 11:31:29,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:29,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 11:31:29,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 11:31:29,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-07 11:31:29,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 167 transitions, 1094 flow. Second operand has 34 states, 34 states have (on average 10.588235294117647) internal successors, (360), 34 states have internal predecessors, (360), 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 11:31:29,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:29,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-07 11:31:29,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:31,858 INFO L124 PetriNetUnfolderBase]: 6203/10342 cut-off events. [2024-11-07 11:31:31,858 INFO L125 PetriNetUnfolderBase]: For 333087/333494 co-relation queries the response was YES. [2024-11-07 11:31:31,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57094 conditions, 10342 events. 6203/10342 cut-off events. For 333087/333494 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 68992 event pairs, 411 based on Foata normal form. 246/10102 useless extension candidates. Maximal degree in co-relation 43496. Up to 2031 conditions per place. [2024-11-07 11:31:31,924 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 151 selfloop transitions, 118 changer transitions 155/443 dead transitions. [2024-11-07 11:31:31,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 443 transitions, 4543 flow [2024-11-07 11:31:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 11:31:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-07 11:31:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 453 transitions. [2024-11-07 11:31:31,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4708939708939709 [2024-11-07 11:31:31,926 INFO L175 Difference]: Start difference. First operand has 150 places, 167 transitions, 1094 flow. Second operand 26 states and 453 transitions. [2024-11-07 11:31:31,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 443 transitions, 4543 flow [2024-11-07 11:31:32,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 443 transitions, 4100 flow, removed 219 selfloop flow, removed 7 redundant places. [2024-11-07 11:31:32,413 INFO L231 Difference]: Finished difference. Result has 171 places, 171 transitions, 1555 flow [2024-11-07 11:31:32,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1555, PETRI_PLACES=171, PETRI_TRANSITIONS=171} [2024-11-07 11:31:32,413 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 132 predicate places. [2024-11-07 11:31:32,413 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 171 transitions, 1555 flow [2024-11-07 11:31:32,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.588235294117647) internal successors, (360), 34 states have internal predecessors, (360), 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 11:31:32,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:32,414 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:32,427 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 11:31:32,614 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 11:31:32,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:32,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:32,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1583234698, now seen corresponding path program 3 times [2024-11-07 11:31:32,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:32,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420600830] [2024-11-07 11:31:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:32,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:32,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:32,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420600830] [2024-11-07 11:31:32,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420600830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:32,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321738257] [2024-11-07 11:31:32,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:31:32,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:32,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:32,669 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 11:31:32,674 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 11:31:32,736 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 11:31:32,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:32,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 11:31:32,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:32,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:32,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321738257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:32,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:32,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 6 [2024-11-07 11:31:32,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199836340] [2024-11-07 11:31:32,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:32,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:31:32,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:32,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:31:32,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:31:32,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-11-07 11:31:32,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 171 transitions, 1555 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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 11:31:32,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:32,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-11-07 11:31:32,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:33,494 INFO L124 PetriNetUnfolderBase]: 2974/6140 cut-off events. [2024-11-07 11:31:33,494 INFO L125 PetriNetUnfolderBase]: For 179065/179895 co-relation queries the response was YES. [2024-11-07 11:31:33,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36136 conditions, 6140 events. 2974/6140 cut-off events. For 179065/179895 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 45422 event pairs, 625 based on Foata normal form. 289/6120 useless extension candidates. Maximal degree in co-relation 30048. Up to 1652 conditions per place. [2024-11-07 11:31:33,563 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 148 selfloop transitions, 25 changer transitions 21/271 dead transitions. [2024-11-07 11:31:33,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 271 transitions, 2943 flow [2024-11-07 11:31:33,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:31:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:31:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-07 11:31:33,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7567567567567568 [2024-11-07 11:31:33,566 INFO L175 Difference]: Start difference. First operand has 171 places, 171 transitions, 1555 flow. Second operand 4 states and 112 transitions. [2024-11-07 11:31:33,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 271 transitions, 2943 flow [2024-11-07 11:31:34,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 271 transitions, 2472 flow, removed 185 selfloop flow, removed 19 redundant places. [2024-11-07 11:31:34,058 INFO L231 Difference]: Finished difference. Result has 139 places, 187 transitions, 1536 flow [2024-11-07 11:31:34,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1536, PETRI_PLACES=139, PETRI_TRANSITIONS=187} [2024-11-07 11:31:34,059 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 100 predicate places. [2024-11-07 11:31:34,059 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 187 transitions, 1536 flow [2024-11-07 11:31:34,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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 11:31:34,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:34,059 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:34,072 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 11:31:34,263 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 11:31:34,264 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:34,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:34,264 INFO L85 PathProgramCache]: Analyzing trace with hash 850715392, now seen corresponding path program 4 times [2024-11-07 11:31:34,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:34,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135184893] [2024-11-07 11:31:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:34,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:31:34,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:34,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135184893] [2024-11-07 11:31:34,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135184893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:34,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719228727] [2024-11-07 11:31:34,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:31:34,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:34,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:34,379 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 11:31:34,381 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 11:31:34,444 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:31:34,444 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:34,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:31:34,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:31:34,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:31:34,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719228727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:34,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:34,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-07 11:31:34,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654436657] [2024-11-07 11:31:34,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:34,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:31:34,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:34,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:31:34,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 11:31:34,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-11-07 11:31:34,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 187 transitions, 1536 flow. Second operand has 12 states, 12 states have (on average 17.75) internal successors, (213), 12 states have internal predecessors, (213), 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 11:31:34,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:34,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-11-07 11:31:34,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:35,165 INFO L124 PetriNetUnfolderBase]: 2446/5132 cut-off events. [2024-11-07 11:31:35,165 INFO L125 PetriNetUnfolderBase]: For 95261/95957 co-relation queries the response was YES. [2024-11-07 11:31:35,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26650 conditions, 5132 events. 2446/5132 cut-off events. For 95261/95957 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 36451 event pairs, 1311 based on Foata normal form. 144/5005 useless extension candidates. Maximal degree in co-relation 22302. Up to 3192 conditions per place. [2024-11-07 11:31:35,204 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 86 selfloop transitions, 3 changer transitions 38/188 dead transitions. [2024-11-07 11:31:35,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 188 transitions, 1706 flow [2024-11-07 11:31:35,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:31:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:31:35,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-11-07 11:31:35,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855855855855856 [2024-11-07 11:31:35,206 INFO L175 Difference]: Start difference. First operand has 139 places, 187 transitions, 1536 flow. Second operand 6 states and 130 transitions. [2024-11-07 11:31:35,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 188 transitions, 1706 flow [2024-11-07 11:31:35,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 188 transitions, 1674 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-11-07 11:31:35,362 INFO L231 Difference]: Finished difference. Result has 144 places, 150 transitions, 1201 flow [2024-11-07 11:31:35,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1201, PETRI_PLACES=144, PETRI_TRANSITIONS=150} [2024-11-07 11:31:35,364 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 105 predicate places. [2024-11-07 11:31:35,365 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 150 transitions, 1201 flow [2024-11-07 11:31:35,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.75) internal successors, (213), 12 states have internal predecessors, (213), 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 11:31:35,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:35,365 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:35,380 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 11:31:35,566 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 11:31:35,566 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:35,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:35,567 INFO L85 PathProgramCache]: Analyzing trace with hash -419238970, now seen corresponding path program 5 times [2024-11-07 11:31:35,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:35,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194882567] [2024-11-07 11:31:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:35,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:36,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:36,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194882567] [2024-11-07 11:31:36,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194882567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:36,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707703601] [2024-11-07 11:31:36,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:31:36,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:36,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:36,453 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 11:31:36,456 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 11:31:36,522 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-07 11:31:36,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:36,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-07 11:31:36,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:37,669 INFO L349 Elim1Store]: treesize reduction 38, result has 15.6 percent of original size [2024-11-07 11:31:37,670 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 46 treesize of output 19 [2024-11-07 11:31:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:37,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:38,346 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-07 11:31:38,346 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 50 treesize of output 53 [2024-11-07 11:31:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:38,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707703601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:38,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:38,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 50 [2024-11-07 11:31:38,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062251895] [2024-11-07 11:31:38,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:38,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-07 11:31:38,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:38,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-07 11:31:38,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=2232, Unknown=0, NotChecked=0, Total=2550 [2024-11-07 11:31:39,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-07 11:31:39,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 150 transitions, 1201 flow. Second operand has 51 states, 51 states have (on average 10.058823529411764) internal successors, (513), 51 states have internal predecessors, (513), 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 11:31:39,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:39,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-07 11:31:39,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:51,911 INFO L124 PetriNetUnfolderBase]: 10334/17538 cut-off events. [2024-11-07 11:31:51,912 INFO L125 PetriNetUnfolderBase]: For 228658/229161 co-relation queries the response was YES. [2024-11-07 11:31:51,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83870 conditions, 17538 events. 10334/17538 cut-off events. For 228658/229161 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 119599 event pairs, 1434 based on Foata normal form. 473/17712 useless extension candidates. Maximal degree in co-relation 83810. Up to 4164 conditions per place. [2024-11-07 11:31:52,032 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 687 selfloop transitions, 445 changer transitions 206/1353 dead transitions. [2024-11-07 11:31:52,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1353 transitions, 12344 flow [2024-11-07 11:31:52,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2024-11-07 11:31:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2024-11-07 11:31:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 2071 transitions. [2024-11-07 11:31:52,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43389901529436414 [2024-11-07 11:31:52,036 INFO L175 Difference]: Start difference. First operand has 144 places, 150 transitions, 1201 flow. Second operand 129 states and 2071 transitions. [2024-11-07 11:31:52,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1353 transitions, 12344 flow [2024-11-07 11:31:52,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 1353 transitions, 11552 flow, removed 393 selfloop flow, removed 12 redundant places. [2024-11-07 11:31:52,861 INFO L231 Difference]: Finished difference. Result has 280 places, 566 transitions, 6659 flow [2024-11-07 11:31:52,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=129, PETRI_FLOW=6659, PETRI_PLACES=280, PETRI_TRANSITIONS=566} [2024-11-07 11:31:52,862 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 241 predicate places. [2024-11-07 11:31:52,862 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 566 transitions, 6659 flow [2024-11-07 11:31:52,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 10.058823529411764) internal successors, (513), 51 states have internal predecessors, (513), 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 11:31:52,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:52,863 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:52,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-07 11:31:53,063 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 11:31:53,064 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:31:53,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:53,064 INFO L85 PathProgramCache]: Analyzing trace with hash 308063968, now seen corresponding path program 6 times [2024-11-07 11:31:53,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:53,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404320101] [2024-11-07 11:31:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:53,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:53,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:53,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404320101] [2024-11-07 11:31:53,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404320101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:53,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704505575] [2024-11-07 11:31:53,995 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:31:53,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:53,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:53,997 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 11:31:54,002 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 11:31:54,114 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-07 11:31:54,114 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:54,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-07 11:31:54,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:54,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:55,225 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-07 11:31:55,225 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 51 treesize of output 43 [2024-11-07 11:31:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:55,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704505575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:55,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:55,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2024-11-07 11:31:55,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491483686] [2024-11-07 11:31:55,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:55,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-07 11:31:55,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-07 11:31:55,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1591, Unknown=0, NotChecked=0, Total=1806 [2024-11-07 11:31:55,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-07 11:31:55,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 566 transitions, 6659 flow. Second operand has 43 states, 43 states have (on average 13.162790697674419) internal successors, (566), 43 states have internal predecessors, (566), 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 11:31:55,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:55,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-07 11:31:55,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:32:09,403 INFO L124 PetriNetUnfolderBase]: 21908/39097 cut-off events. [2024-11-07 11:32:09,403 INFO L125 PetriNetUnfolderBase]: For 553242/554226 co-relation queries the response was YES. [2024-11-07 11:32:09,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230805 conditions, 39097 events. 21908/39097 cut-off events. For 553242/554226 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 329242 event pairs, 1147 based on Foata normal form. 761/39079 useless extension candidates. Maximal degree in co-relation 228001. Up to 6674 conditions per place. [2024-11-07 11:32:10,337 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 1017 selfloop transitions, 1052 changer transitions 496/2610 dead transitions. [2024-11-07 11:32:10,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 2610 transitions, 34448 flow [2024-11-07 11:32:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-11-07 11:32:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2024-11-07 11:32:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 2583 transitions. [2024-11-07 11:32:10,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5095679621227066 [2024-11-07 11:32:10,341 INFO L175 Difference]: Start difference. First operand has 280 places, 566 transitions, 6659 flow. Second operand 137 states and 2583 transitions. [2024-11-07 11:32:10,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 2610 transitions, 34448 flow [2024-11-07 11:32:35,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 2610 transitions, 27455 flow, removed 3080 selfloop flow, removed 12 redundant places. [2024-11-07 11:32:35,201 INFO L231 Difference]: Finished difference. Result has 469 places, 1401 transitions, 17755 flow [2024-11-07 11:32:35,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5079, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=137, PETRI_FLOW=17755, PETRI_PLACES=469, PETRI_TRANSITIONS=1401} [2024-11-07 11:32:35,202 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 430 predicate places. [2024-11-07 11:32:35,203 INFO L471 AbstractCegarLoop]: Abstraction has has 469 places, 1401 transitions, 17755 flow [2024-11-07 11:32:35,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 13.162790697674419) internal successors, (566), 43 states have internal predecessors, (566), 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 11:32:35,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:32:35,203 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:32:35,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-07 11:32:35,404 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,SelfDestructingSolverStorable8 [2024-11-07 11:32:35,404 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:32:35,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:32:35,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1094556248, now seen corresponding path program 7 times [2024-11-07 11:32:35,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:32:35,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074999332] [2024-11-07 11:32:35,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:32:35,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:32:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:36,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:32:36,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074999332] [2024-11-07 11:32:36,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074999332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:32:36,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383690632] [2024-11-07 11:32:36,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:32:36,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:36,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:32:36,168 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 11:32:36,180 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 11:32:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:36,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-07 11:32:36,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:32:36,818 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-07 11:32:36,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2024-11-07 11:32:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:36,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:32:37,362 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2024-11-07 11:32:37,362 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 50 treesize of output 45 [2024-11-07 11:32:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:37,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383690632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:32:37,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:32:37,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2024-11-07 11:32:37,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118755379] [2024-11-07 11:32:37,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:32:37,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-07 11:32:37,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:32:37,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-07 11:32:37,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1558, Unknown=0, NotChecked=0, Total=1806 [2024-11-07 11:32:37,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-07 11:32:37,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 1401 transitions, 17755 flow. Second operand has 43 states, 43 states have (on average 13.069767441860465) internal successors, (562), 43 states have internal predecessors, (562), 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 11:32:37,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:32:37,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-07 11:32:37,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand