./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e'] 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-queue-add-2.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:31:34,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:31:34,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:31:34,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:31:34,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:31:34,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:31:34,548 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:31:34,548 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:31:34,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:31:34,550 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:31:34,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:31:34,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:31:34,550 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:31:34,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:31:34,551 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:31:34,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:31:34,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:31:34,551 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:31:34,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:31:34,551 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:31:34,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:31:34,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:31:34,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:31:34,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:31:34,551 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:31:34,551 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:31:34,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:31:34,552 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:31:34,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:31:34,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:31:34,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:31:34,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:31:34,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:31:34,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:31:34,552 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:31:34,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:31:34,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:31:34,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:31:34,552 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:31:34,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:31:34,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:31:34,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:31:34,553 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 -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2024-11-07 11:31:34,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:31:34,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:31:34,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:31:34,849 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:31:34,849 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:31:34,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-11-07 11:31:36,162 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:31:36,368 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:31:36,369 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-11-07 11:31:36,375 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0ce7a8508/2d5dee8bb3c940c0b1a1047fcb8739d8/FLAG2678b0c4b [2024-11-07 11:31:36,396 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0ce7a8508/2d5dee8bb3c940c0b1a1047fcb8739d8 [2024-11-07 11:31:36,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:31:36,404 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:31:36,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:31:36,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:31:36,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:31:36,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567a66d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36, skipping insertion in model container [2024-11-07 11:31:36,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:31:36,602 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-queue-add-2.wvr.c[2722,2735] [2024-11-07 11:31:36,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:31:36,625 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:31:36,650 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-queue-add-2.wvr.c[2722,2735] [2024-11-07 11:31:36,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:31:36,670 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:31:36,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36 WrapperNode [2024-11-07 11:31:36,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:31:36,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:31:36,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:31:36,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:31:36,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,715 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 149 [2024-11-07 11:31:36,719 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:31:36,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:31:36,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:31:36,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:31:36,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,762 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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 11:31:36,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,768 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:31:36,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:31:36,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:31:36,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:31:36,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (1/1) ... [2024-11-07 11:31:36,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:31:36,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:36,825 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 11:31:36,827 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 11:31:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:31:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:31:36,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:31:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:31:36,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:31:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:31:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:31:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:31:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:31:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 11:31:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 11:31:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:31:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:31:36,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:31:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:31:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:31:36,854 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 11:31:36,962 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:31:36,964 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:31:37,252 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:31:37,252 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:31:37,466 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:31:37,467 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-07 11:31:37,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:31:37 BoogieIcfgContainer [2024-11-07 11:31:37,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:31:37,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:31:37,471 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:31:37,475 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:31:37,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:31:36" (1/3) ... [2024-11-07 11:31:37,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2deed364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:31:37, skipping insertion in model container [2024-11-07 11:31:37,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:31:36" (2/3) ... [2024-11-07 11:31:37,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2deed364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:31:37, skipping insertion in model container [2024-11-07 11:31:37,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:31:37" (3/3) ... [2024-11-07 11:31:37,478 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2024-11-07 11:31:37,491 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:31:37,491 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:31:37,491 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:31:37,552 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:31:37,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2024-11-07 11:31:37,618 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-07 11:31:37,623 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:31:37,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-07 11:31:37,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2024-11-07 11:31:37,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2024-11-07 11:31:37,642 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:31:37,656 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;@5044c7f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:31:37,656 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:31:37,665 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:31:37,665 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-07 11:31:37,665 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:31:37,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:37,666 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:37,667 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:37,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:37,671 INFO L85 PathProgramCache]: Analyzing trace with hash 898408006, now seen corresponding path program 1 times [2024-11-07 11:31:37,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:37,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942440586] [2024-11-07 11:31:37,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:37,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:37,829 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 11:31:37,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:37,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942440586] [2024-11-07 11:31:37,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942440586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:37,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:37,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:31:37,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746531035] [2024-11-07 11:31:37,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:37,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 11:31:37,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:37,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 11:31:37,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 11:31:37,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-07 11:31:37,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:37,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:37,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-07 11:31:37,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:37,961 INFO L124 PetriNetUnfolderBase]: 87/187 cut-off events. [2024-11-07 11:31:37,963 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-07 11:31:37,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 187 events. 87/187 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 646 event pairs, 66 based on Foata normal form. 13/183 useless extension candidates. Maximal degree in co-relation 317. Up to 146 conditions per place. [2024-11-07 11:31:37,968 INFO L140 encePairwiseOnDemand]: 28/29 looper letters, 19 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2024-11-07 11:31:37,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 100 flow [2024-11-07 11:31:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 11:31:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 11:31:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 36 transitions. [2024-11-07 11:31:37,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-11-07 11:31:37,986 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 2 states and 36 transitions. [2024-11-07 11:31:37,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 100 flow [2024-11-07 11:31:37,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:31:37,994 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 54 flow [2024-11-07 11:31:37,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2024-11-07 11:31:38,002 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2024-11-07 11:31:38,002 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 54 flow [2024-11-07 11:31:38,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:38,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:38,003 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:38,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:31:38,003 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:38,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:38,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1095861289, now seen corresponding path program 1 times [2024-11-07 11:31:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681735382] [2024-11-07 11:31:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:38,330 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 11:31:38,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:38,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681735382] [2024-11-07 11:31:38,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681735382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:38,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:38,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:31:38,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522327655] [2024-11-07 11:31:38,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:38,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:31:38,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:38,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:31:38,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:31:38,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-07 11:31:38,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 11:31:38,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:38,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-07 11:31:38,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:38,481 INFO L124 PetriNetUnfolderBase]: 100/227 cut-off events. [2024-11-07 11:31:38,481 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:31:38,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 227 events. 100/227 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 832 event pairs, 79 based on Foata normal form. 17/228 useless extension candidates. Maximal degree in co-relation 416. Up to 146 conditions per place. [2024-11-07 11:31:38,484 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 18 selfloop transitions, 2 changer transitions 8/34 dead transitions. [2024-11-07 11:31:38,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 130 flow [2024-11-07 11:31:38,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:31:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:31:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-07 11:31:38,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2024-11-07 11:31:38,487 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 54 flow. Second operand 4 states and 63 transitions. [2024-11-07 11:31:38,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 130 flow [2024-11-07 11:31:38,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:31:38,490 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 72 flow [2024-11-07 11:31:38,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-07 11:31:38,491 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2024-11-07 11:31:38,491 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 72 flow [2024-11-07 11:31:38,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 11:31:38,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:38,492 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:38,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:31:38,492 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:38,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:38,493 INFO L85 PathProgramCache]: Analyzing trace with hash -798163703, now seen corresponding path program 1 times [2024-11-07 11:31:38,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:38,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565454780] [2024-11-07 11:31:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:38,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:38,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:38,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565454780] [2024-11-07 11:31:38,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565454780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:38,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:38,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 11:31:38,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658688407] [2024-11-07 11:31:38,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:38,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:31:38,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:31:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:31:38,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-07 11:31:38,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 72 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 11:31:38,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:38,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-07 11:31:38,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:39,076 INFO L124 PetriNetUnfolderBase]: 229/444 cut-off events. [2024-11-07 11:31:39,077 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-07 11:31:39,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 444 events. 229/444 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1986 event pairs, 54 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 961. Up to 155 conditions per place. [2024-11-07 11:31:39,084 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 46 selfloop transitions, 9 changer transitions 7/66 dead transitions. [2024-11-07 11:31:39,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 66 transitions, 303 flow [2024-11-07 11:31:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 11:31:39,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 11:31:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-11-07 11:31:39,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47413793103448276 [2024-11-07 11:31:39,087 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 72 flow. Second operand 8 states and 110 transitions. [2024-11-07 11:31:39,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 66 transitions, 303 flow [2024-11-07 11:31:39,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 66 transitions, 299 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:31:39,092 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 126 flow [2024-11-07 11:31:39,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=126, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-07 11:31:39,093 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2024-11-07 11:31:39,094 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 126 flow [2024-11-07 11:31:39,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 11:31:39,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:39,094 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:39,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:31:39,094 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:39,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:39,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1929446763, now seen corresponding path program 2 times [2024-11-07 11:31:39,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:39,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437581299] [2024-11-07 11:31:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:39,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437581299] [2024-11-07 11:31:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437581299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:39,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:39,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:31:39,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094079400] [2024-11-07 11:31:39,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:39,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:31:39,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:39,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:31:39,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:31:39,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-07 11:31:39,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:39,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:39,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-07 11:31:39,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:39,287 INFO L124 PetriNetUnfolderBase]: 145/326 cut-off events. [2024-11-07 11:31:39,288 INFO L125 PetriNetUnfolderBase]: For 182/186 co-relation queries the response was YES. [2024-11-07 11:31:39,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 326 events. 145/326 cut-off events. For 182/186 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1327 event pairs, 39 based on Foata normal form. 6/328 useless extension candidates. Maximal degree in co-relation 815. Up to 214 conditions per place. [2024-11-07 11:31:39,293 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 26 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-07 11:31:39,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 197 flow [2024-11-07 11:31:39,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:31:39,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:31:39,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-07 11:31:39,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-07 11:31:39,296 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 126 flow. Second operand 3 states and 51 transitions. [2024-11-07 11:31:39,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 197 flow [2024-11-07 11:31:39,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 187 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-07 11:31:39,300 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 135 flow [2024-11-07 11:31:39,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-07 11:31:39,301 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-11-07 11:31:39,302 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 135 flow [2024-11-07 11:31:39,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:39,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:39,303 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:39,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:31:39,303 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:39,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:39,304 INFO L85 PathProgramCache]: Analyzing trace with hash -126642015, now seen corresponding path program 1 times [2024-11-07 11:31:39,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:39,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952701573] [2024-11-07 11:31:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:39,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:39,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:39,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952701573] [2024-11-07 11:31:39,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952701573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:39,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654715972] [2024-11-07 11:31:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:39,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:39,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:39,508 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 11:31:39,510 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 11:31:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:39,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:31:39,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:39,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:39,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:39,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654715972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:39,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:39,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-07 11:31:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035879207] [2024-11-07 11:31:39,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:39,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:31:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:39,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:31:39,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 11:31:39,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-07 11:31:39,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 135 flow. Second operand has 12 states, 12 states have (on average 10.75) internal successors, (129), 12 states have internal predecessors, (129), 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 11:31:39,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:39,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-07 11:31:39,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:39,969 INFO L124 PetriNetUnfolderBase]: 244/562 cut-off events. [2024-11-07 11:31:39,969 INFO L125 PetriNetUnfolderBase]: For 558/597 co-relation queries the response was YES. [2024-11-07 11:31:39,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 562 events. 244/562 cut-off events. For 558/597 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2830 event pairs, 137 based on Foata normal form. 26/560 useless extension candidates. Maximal degree in co-relation 1505. Up to 262 conditions per place. [2024-11-07 11:31:39,973 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 41 selfloop transitions, 5 changer transitions 4/59 dead transitions. [2024-11-07 11:31:39,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 327 flow [2024-11-07 11:31:39,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:31:39,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:31:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-11-07 11:31:39,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-07 11:31:39,975 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 135 flow. Second operand 6 states and 93 transitions. [2024-11-07 11:31:39,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 327 flow [2024-11-07 11:31:39,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 306 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-07 11:31:39,978 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 163 flow [2024-11-07 11:31:39,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-11-07 11:31:39,978 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-11-07 11:31:39,979 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 163 flow [2024-11-07 11:31:39,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 12 states have internal predecessors, (129), 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 11:31:39,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:39,979 INFO L204 CegarLoopForPetriNet]: trace histogram [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 11:31:39,997 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 11:31:40,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:40,180 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:40,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:40,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1356069503, now seen corresponding path program 2 times [2024-11-07 11:31:40,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:40,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061439510] [2024-11-07 11:31:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:40,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:40,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:40,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061439510] [2024-11-07 11:31:40,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061439510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:40,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117195362] [2024-11-07 11:31:40,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:31:40,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:40,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:40,825 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 11:31:40,826 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 11:31:40,928 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:31:40,928 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:40,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-07 11:31:40,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:41,153 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 12 treesize of output 3 [2024-11-07 11:31:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:41,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:41,431 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:31:41,431 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 24 treesize of output 11 [2024-11-07 11:31:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:41,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117195362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:41,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:41,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 21 [2024-11-07 11:31:41,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476607956] [2024-11-07 11:31:41,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:41,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 11:31:41,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:41,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 11:31:41,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2024-11-07 11:31:41,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-07 11:31:41,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 163 flow. Second operand has 22 states, 22 states have (on average 8.5) internal successors, (187), 22 states have internal predecessors, (187), 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 11:31:41,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:41,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-07 11:31:41,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:43,426 INFO L124 PetriNetUnfolderBase]: 745/1590 cut-off events. [2024-11-07 11:31:43,426 INFO L125 PetriNetUnfolderBase]: For 1144/1147 co-relation queries the response was YES. [2024-11-07 11:31:43,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4054 conditions, 1590 events. 745/1590 cut-off events. For 1144/1147 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9480 event pairs, 65 based on Foata normal form. 78/1662 useless extension candidates. Maximal degree in co-relation 4042. Up to 294 conditions per place. [2024-11-07 11:31:43,437 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 157 selfloop transitions, 39 changer transitions 16/219 dead transitions. [2024-11-07 11:31:43,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 219 transitions, 1224 flow [2024-11-07 11:31:43,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-07 11:31:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-07 11:31:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 391 transitions. [2024-11-07 11:31:43,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4815270935960591 [2024-11-07 11:31:43,440 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 163 flow. Second operand 28 states and 391 transitions. [2024-11-07 11:31:43,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 219 transitions, 1224 flow [2024-11-07 11:31:43,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 219 transitions, 1173 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-11-07 11:31:43,447 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 504 flow [2024-11-07 11:31:43,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=504, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-11-07 11:31:43,449 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-11-07 11:31:43,449 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 504 flow [2024-11-07 11:31:43,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.5) internal successors, (187), 22 states have internal predecessors, (187), 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 11:31:43,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:43,450 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:43,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 11:31:43,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:43,655 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:43,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:43,656 INFO L85 PathProgramCache]: Analyzing trace with hash -623450337, now seen corresponding path program 1 times [2024-11-07 11:31:43,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:43,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130136929] [2024-11-07 11:31:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:43,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:43,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:43,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130136929] [2024-11-07 11:31:43,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130136929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:43,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929634123] [2024-11-07 11:31:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:43,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:43,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:43,803 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 11:31:43,805 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 11:31:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:43,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 11:31:43,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:43,923 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:31:43,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929634123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:43,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:31:43,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-07 11:31:43,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117014891] [2024-11-07 11:31:43,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:43,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:31:43,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:43,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:31:43,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:31:43,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-07 11:31:43,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 504 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:43,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:43,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-07 11:31:43,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:44,149 INFO L124 PetriNetUnfolderBase]: 599/1528 cut-off events. [2024-11-07 11:31:44,150 INFO L125 PetriNetUnfolderBase]: For 5895/5978 co-relation queries the response was YES. [2024-11-07 11:31:44,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4832 conditions, 1528 events. 599/1528 cut-off events. For 5895/5978 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 10269 event pairs, 150 based on Foata normal form. 39/1529 useless extension candidates. Maximal degree in co-relation 4809. Up to 609 conditions per place. [2024-11-07 11:31:44,161 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 63 selfloop transitions, 16 changer transitions 8/102 dead transitions. [2024-11-07 11:31:44,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 102 transitions, 837 flow [2024-11-07 11:31:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:31:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:31:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-07 11:31:44,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6810344827586207 [2024-11-07 11:31:44,163 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 504 flow. Second operand 4 states and 79 transitions. [2024-11-07 11:31:44,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 102 transitions, 837 flow [2024-11-07 11:31:44,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 102 transitions, 698 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-11-07 11:31:44,181 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 489 flow [2024-11-07 11:31:44,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=489, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2024-11-07 11:31:44,182 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-11-07 11:31:44,182 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 489 flow [2024-11-07 11:31:44,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:44,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:44,182 INFO L204 CegarLoopForPetriNet]: trace histogram [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 11:31:44,199 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 11:31:44,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:44,384 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:44,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:44,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2046369205, now seen corresponding path program 3 times [2024-11-07 11:31:44,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:44,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66001638] [2024-11-07 11:31:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:44,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:44,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:44,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66001638] [2024-11-07 11:31:44,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66001638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:44,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851675326] [2024-11-07 11:31:44,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:31:44,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:44,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:44,839 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 11:31:44,841 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 11:31:44,918 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:31:44,919 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:44,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-07 11:31:44,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:45,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:45,265 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:31:45,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-07 11:31:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:45,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851675326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:45,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:45,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-07 11:31:45,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641704202] [2024-11-07 11:31:45,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:45,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 11:31:45,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 11:31:45,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-07 11:31:45,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-07 11:31:45,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 489 flow. Second operand has 22 states, 22 states have (on average 8.454545454545455) internal successors, (186), 22 states have internal predecessors, (186), 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 11:31:45,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:45,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-07 11:31:45,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:46,727 INFO L124 PetriNetUnfolderBase]: 1228/2533 cut-off events. [2024-11-07 11:31:46,728 INFO L125 PetriNetUnfolderBase]: For 13129/13129 co-relation queries the response was YES. [2024-11-07 11:31:46,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8772 conditions, 2533 events. 1228/2533 cut-off events. For 13129/13129 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16265 event pairs, 120 based on Foata normal form. 93/2609 useless extension candidates. Maximal degree in co-relation 8751. Up to 546 conditions per place. [2024-11-07 11:31:46,756 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 142 selfloop transitions, 62 changer transitions 1/211 dead transitions. [2024-11-07 11:31:46,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 211 transitions, 1889 flow [2024-11-07 11:31:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 11:31:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 11:31:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 282 transitions. [2024-11-07 11:31:46,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4862068965517241 [2024-11-07 11:31:46,759 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 489 flow. Second operand 20 states and 282 transitions. [2024-11-07 11:31:46,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 211 transitions, 1889 flow [2024-11-07 11:31:46,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 211 transitions, 1647 flow, removed 121 selfloop flow, removed 3 redundant places. [2024-11-07 11:31:46,789 INFO L231 Difference]: Finished difference. Result has 97 places, 103 transitions, 1020 flow [2024-11-07 11:31:46,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1020, PETRI_PLACES=97, PETRI_TRANSITIONS=103} [2024-11-07 11:31:46,791 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-11-07 11:31:46,792 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 103 transitions, 1020 flow [2024-11-07 11:31:46,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.454545454545455) internal successors, (186), 22 states have internal predecessors, (186), 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 11:31:46,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:46,793 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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 11:31:46,810 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 11:31:46,993 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,SelfDestructingSolverStorable7 [2024-11-07 11:31:46,994 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:46,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:46,994 INFO L85 PathProgramCache]: Analyzing trace with hash 639799825, now seen corresponding path program 4 times [2024-11-07 11:31:46,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:46,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508607876] [2024-11-07 11:31:46,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:46,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:47,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:47,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508607876] [2024-11-07 11:31:47,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508607876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:47,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195547539] [2024-11-07 11:31:47,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:31:47,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:47,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:47,653 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 11:31:47,655 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 11:31:47,728 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:31:47,728 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:47,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 11:31:47,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:47,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:47,868 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 11:31:47,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-07 11:31:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:31:47,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195547539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:47,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:47,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 15 [2024-11-07 11:31:47,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230781133] [2024-11-07 11:31:47,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:47,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:31:47,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:47,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:31:47,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:31:47,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-07 11:31:47,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 103 transitions, 1020 flow. Second operand has 16 states, 16 states have (on average 8.8125) internal successors, (141), 16 states have internal predecessors, (141), 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 11:31:47,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:47,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-07 11:31:47,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:48,614 INFO L124 PetriNetUnfolderBase]: 1366/2825 cut-off events. [2024-11-07 11:31:48,614 INFO L125 PetriNetUnfolderBase]: For 21530/21530 co-relation queries the response was YES. [2024-11-07 11:31:48,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11364 conditions, 2825 events. 1366/2825 cut-off events. For 21530/21530 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 18340 event pairs, 181 based on Foata normal form. 56/2878 useless extension candidates. Maximal degree in co-relation 11335. Up to 940 conditions per place. [2024-11-07 11:31:48,645 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 122 selfloop transitions, 51 changer transitions 0/179 dead transitions. [2024-11-07 11:31:48,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 179 transitions, 2067 flow [2024-11-07 11:31:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:31:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:31:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-11-07 11:31:48,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4323607427055703 [2024-11-07 11:31:48,647 INFO L175 Difference]: Start difference. First operand has 97 places, 103 transitions, 1020 flow. Second operand 13 states and 163 transitions. [2024-11-07 11:31:48,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 179 transitions, 2067 flow [2024-11-07 11:31:48,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 179 transitions, 1821 flow, removed 113 selfloop flow, removed 8 redundant places. [2024-11-07 11:31:48,728 INFO L231 Difference]: Finished difference. Result has 101 places, 112 transitions, 1075 flow [2024-11-07 11:31:48,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1075, PETRI_PLACES=101, PETRI_TRANSITIONS=112} [2024-11-07 11:31:48,729 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-11-07 11:31:48,729 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 112 transitions, 1075 flow [2024-11-07 11:31:48,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.8125) internal successors, (141), 16 states have internal predecessors, (141), 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 11:31:48,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:48,729 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] [2024-11-07 11:31:48,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 11:31:48,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:48,930 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:48,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:48,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1047447405, now seen corresponding path program 1 times [2024-11-07 11:31:48,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:48,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704041773] [2024-11-07 11:31:48,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:48,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:49,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:49,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704041773] [2024-11-07 11:31:49,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704041773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:49,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106029627] [2024-11-07 11:31:49,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:49,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:49,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:49,676 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 11:31:49,678 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 11:31:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:49,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-07 11:31:49,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:50,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:50,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:31:50,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-07 11:31:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:51,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106029627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:51,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:51,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 40 [2024-11-07 11:31:51,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820774794] [2024-11-07 11:31:51,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:51,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-07 11:31:51,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:51,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-07 11:31:51,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2024-11-07 11:31:51,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-07 11:31:51,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 112 transitions, 1075 flow. Second operand has 41 states, 41 states have (on average 5.829268292682927) internal successors, (239), 41 states have internal predecessors, (239), 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 11:31:51,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:51,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-07 11:31:51,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:54,802 INFO L124 PetriNetUnfolderBase]: 3252/6086 cut-off events. [2024-11-07 11:31:54,803 INFO L125 PetriNetUnfolderBase]: For 41889/41889 co-relation queries the response was YES. [2024-11-07 11:31:54,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24383 conditions, 6086 events. 3252/6086 cut-off events. For 41889/41889 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 39873 event pairs, 271 based on Foata normal form. 6/6092 useless extension candidates. Maximal degree in co-relation 24354. Up to 2244 conditions per place. [2024-11-07 11:31:54,851 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 279 selfloop transitions, 151 changer transitions 49/481 dead transitions. [2024-11-07 11:31:54,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 481 transitions, 4606 flow [2024-11-07 11:31:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-07 11:31:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-07 11:31:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 502 transitions. [2024-11-07 11:31:54,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34620689655172415 [2024-11-07 11:31:54,855 INFO L175 Difference]: Start difference. First operand has 101 places, 112 transitions, 1075 flow. Second operand 50 states and 502 transitions. [2024-11-07 11:31:54,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 481 transitions, 4606 flow [2024-11-07 11:31:54,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 481 transitions, 4592 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 11:31:54,969 INFO L231 Difference]: Finished difference. Result has 164 places, 232 transitions, 2657 flow [2024-11-07 11:31:54,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2657, PETRI_PLACES=164, PETRI_TRANSITIONS=232} [2024-11-07 11:31:54,971 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-11-07 11:31:54,971 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 232 transitions, 2657 flow [2024-11-07 11:31:54,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.829268292682927) internal successors, (239), 41 states have internal predecessors, (239), 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 11:31:54,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:54,971 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] [2024-11-07 11:31:54,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 11:31:55,172 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,SelfDestructingSolverStorable9 [2024-11-07 11:31:55,172 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:31:55,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:55,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1326045745, now seen corresponding path program 2 times [2024-11-07 11:31:55,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:55,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391753404] [2024-11-07 11:31:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:55,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:55,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:55,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391753404] [2024-11-07 11:31:55,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391753404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:55,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646625061] [2024-11-07 11:31:55,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:31:55,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:55,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:55,868 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 11:31:55,870 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 11:31:55,943 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:31:55,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:55,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-07 11:31:55,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:56,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:31:56,295 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 24 treesize of output 17 [2024-11-07 11:31:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:56,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:56,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:31:56,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-07 11:31:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:57,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646625061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:57,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:57,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 40 [2024-11-07 11:31:57,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120978221] [2024-11-07 11:31:57,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:57,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-07 11:31:57,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:57,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-07 11:31:57,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1439, Unknown=0, NotChecked=0, Total=1640 [2024-11-07 11:31:57,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-07 11:31:57,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 232 transitions, 2657 flow. Second operand has 41 states, 41 states have (on average 5.780487804878049) internal successors, (237), 41 states have internal predecessors, (237), 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 11:31:57,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:57,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-07 11:31:57,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:32:02,672 INFO L124 PetriNetUnfolderBase]: 4218/8010 cut-off events. [2024-11-07 11:32:02,672 INFO L125 PetriNetUnfolderBase]: For 74344/74344 co-relation queries the response was YES. [2024-11-07 11:32:02,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38898 conditions, 8010 events. 4218/8010 cut-off events. For 74344/74344 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 57041 event pairs, 280 based on Foata normal form. 4/8014 useless extension candidates. Maximal degree in co-relation 38850. Up to 2233 conditions per place. [2024-11-07 11:32:02,737 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 286 selfloop transitions, 535 changer transitions 69/892 dead transitions. [2024-11-07 11:32:02,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 892 transitions, 10318 flow [2024-11-07 11:32:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-07 11:32:02,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-11-07 11:32:02,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 815 transitions. [2024-11-07 11:32:02,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3345648604269294 [2024-11-07 11:32:02,745 INFO L175 Difference]: Start difference. First operand has 164 places, 232 transitions, 2657 flow. Second operand 84 states and 815 transitions. [2024-11-07 11:32:02,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 892 transitions, 10318 flow [2024-11-07 11:32:03,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 892 transitions, 10158 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-11-07 11:32:03,013 INFO L231 Difference]: Finished difference. Result has 260 places, 621 transitions, 8851 flow [2024-11-07 11:32:03,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=8851, PETRI_PLACES=260, PETRI_TRANSITIONS=621} [2024-11-07 11:32:03,015 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-11-07 11:32:03,016 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 621 transitions, 8851 flow [2024-11-07 11:32:03,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.780487804878049) internal successors, (237), 41 states have internal predecessors, (237), 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 11:32:03,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:32:03,017 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] [2024-11-07 11:32:03,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 11:32:03,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:03,217 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:32:03,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:32:03,218 INFO L85 PathProgramCache]: Analyzing trace with hash -166545805, now seen corresponding path program 3 times [2024-11-07 11:32:03,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:32:03,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769206070] [2024-11-07 11:32:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:32:03,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:32:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:03,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:32:03,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769206070] [2024-11-07 11:32:03,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769206070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:32:03,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752822430] [2024-11-07 11:32:03,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:32:03,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:03,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:32:03,931 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:32:03,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 11:32:03,995 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:32:03,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:32:03,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-07 11:32:04,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:32:04,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:32:04,294 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 23 treesize of output 15 [2024-11-07 11:32:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:04,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:32:04,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:32:04,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-07 11:32:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:04,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752822430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:32:04,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:32:04,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 41 [2024-11-07 11:32:04,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719815924] [2024-11-07 11:32:04,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:32:04,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-07 11:32:04,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:32:04,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-07 11:32:04,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1515, Unknown=0, NotChecked=0, Total=1722 [2024-11-07 11:32:05,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-07 11:32:05,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 621 transitions, 8851 flow. Second operand has 42 states, 42 states have (on average 5.785714285714286) internal successors, (243), 42 states have internal predecessors, (243), 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 11:32:05,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:32:05,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-07 11:32:05,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:32:09,516 INFO L124 PetriNetUnfolderBase]: 4290/8156 cut-off events. [2024-11-07 11:32:09,516 INFO L125 PetriNetUnfolderBase]: For 130454/130454 co-relation queries the response was YES. [2024-11-07 11:32:09,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49928 conditions, 8156 events. 4290/8156 cut-off events. For 130454/130454 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 58242 event pairs, 342 based on Foata normal form. 3/8153 useless extension candidates. Maximal degree in co-relation 49852. Up to 3759 conditions per place. [2024-11-07 11:32:09,597 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 297 selfloop transitions, 559 changer transitions 48/906 dead transitions. [2024-11-07 11:32:09,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 906 transitions, 13581 flow [2024-11-07 11:32:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-07 11:32:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-07 11:32:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 596 transitions. [2024-11-07 11:32:09,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3483343074225599 [2024-11-07 11:32:09,600 INFO L175 Difference]: Start difference. First operand has 260 places, 621 transitions, 8851 flow. Second operand 59 states and 596 transitions. [2024-11-07 11:32:09,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 906 transitions, 13581 flow [2024-11-07 11:32:10,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 906 transitions, 12627 flow, removed 442 selfloop flow, removed 22 redundant places. [2024-11-07 11:32:10,408 INFO L231 Difference]: Finished difference. Result has 307 places, 717 transitions, 11420 flow [2024-11-07 11:32:10,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=8051, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=460, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=11420, PETRI_PLACES=307, PETRI_TRANSITIONS=717} [2024-11-07 11:32:10,409 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 278 predicate places. [2024-11-07 11:32:10,409 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 717 transitions, 11420 flow [2024-11-07 11:32:10,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.785714285714286) internal successors, (243), 42 states have internal predecessors, (243), 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 11:32:10,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:32:10,410 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] [2024-11-07 11:32:10,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 11:32:10,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:10,610 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:32:10,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:32:10,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1222013193, now seen corresponding path program 4 times [2024-11-07 11:32:10,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:32:10,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406977089] [2024-11-07 11:32:10,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:32:10,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:32:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:11,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:32:11,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406977089] [2024-11-07 11:32:11,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406977089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:32:11,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039688303] [2024-11-07 11:32:11,212 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:32:11,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:11,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:32:11,215 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:32:11,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 11:32:11,284 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:32:11,284 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:32:11,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:32:11,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:32:11,598 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 11 treesize of output 3 [2024-11-07 11:32:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:11,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:32:12,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:32:12,235 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 37 treesize of output 21 [2024-11-07 11:32:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:12,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039688303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:32:12,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:32:12,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 43 [2024-11-07 11:32:12,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763586516] [2024-11-07 11:32:12,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:32:12,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-07 11:32:12,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:32:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-07 11:32:12,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1664, Unknown=0, NotChecked=0, Total=1892 [2024-11-07 11:32:12,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-07 11:32:12,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 717 transitions, 11420 flow. Second operand has 44 states, 44 states have (on average 5.704545454545454) internal successors, (251), 44 states have internal predecessors, (251), 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 11:32:12,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:32:12,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-07 11:32:12,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:32:23,004 INFO L124 PetriNetUnfolderBase]: 9906/18286 cut-off events. [2024-11-07 11:32:23,004 INFO L125 PetriNetUnfolderBase]: For 433189/433189 co-relation queries the response was YES. [2024-11-07 11:32:23,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132155 conditions, 18286 events. 9906/18286 cut-off events. For 433189/433189 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 145956 event pairs, 247 based on Foata normal form. 147/18433 useless extension candidates. Maximal degree in co-relation 132067. Up to 3312 conditions per place. [2024-11-07 11:32:23,256 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 658 selfloop transitions, 1527 changer transitions 153/2340 dead transitions. [2024-11-07 11:32:23,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 2340 transitions, 41970 flow [2024-11-07 11:32:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-11-07 11:32:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2024-11-07 11:32:23,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 1219 transitions. [2024-11-07 11:32:23,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36551724137931035 [2024-11-07 11:32:23,260 INFO L175 Difference]: Start difference. First operand has 307 places, 717 transitions, 11420 flow. Second operand 115 states and 1219 transitions. [2024-11-07 11:32:23,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 2340 transitions, 41970 flow [2024-11-07 11:32:26,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 2340 transitions, 41242 flow, removed 236 selfloop flow, removed 31 redundant places. [2024-11-07 11:32:26,231 INFO L231 Difference]: Finished difference. Result has 431 places, 1847 transitions, 37214 flow [2024-11-07 11:32:26,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=10823, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=552, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=115, PETRI_FLOW=37214, PETRI_PLACES=431, PETRI_TRANSITIONS=1847} [2024-11-07 11:32:26,232 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 402 predicate places. [2024-11-07 11:32:26,233 INFO L471 AbstractCegarLoop]: Abstraction has has 431 places, 1847 transitions, 37214 flow [2024-11-07 11:32:26,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.704545454545454) internal successors, (251), 44 states have internal predecessors, (251), 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 11:32:26,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:32:26,233 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] [2024-11-07 11:32:26,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 11:32:26,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:26,434 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:32:26,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:32:26,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1158242463, now seen corresponding path program 5 times [2024-11-07 11:32:26,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:32:26,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040112554] [2024-11-07 11:32:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:32:26,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:32:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:27,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:32:27,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040112554] [2024-11-07 11:32:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040112554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:32:27,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506959369] [2024-11-07 11:32:27,147 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:32:27,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:27,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:32:27,150 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:32:27,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 11:32:27,233 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-07 11:32:27,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:32:27,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-07 11:32:27,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:32:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:32:27,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:32:27,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:32:27,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-07 11:32:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:32:27,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506959369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:32:27,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:32:27,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 10] total 33 [2024-11-07 11:32:27,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768026758] [2024-11-07 11:32:27,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:32:27,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 11:32:27,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:32:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 11:32:27,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 11:32:28,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-07 11:32:28,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 1847 transitions, 37214 flow. Second operand has 34 states, 34 states have (on average 6.147058823529412) internal successors, (209), 34 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:32:28,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:32:28,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-07 11:32:28,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:32:35,826 INFO L124 PetriNetUnfolderBase]: 9385/17423 cut-off events. [2024-11-07 11:32:35,826 INFO L125 PetriNetUnfolderBase]: For 686149/686149 co-relation queries the response was YES. [2024-11-07 11:32:36,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151344 conditions, 17423 events. 9385/17423 cut-off events. For 686149/686149 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 138081 event pairs, 843 based on Foata normal form. 2/17425 useless extension candidates. Maximal degree in co-relation 151216. Up to 8608 conditions per place. [2024-11-07 11:32:36,135 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 806 selfloop transitions, 1168 changer transitions 42/2018 dead transitions. [2024-11-07 11:32:36,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 2018 transitions, 44046 flow [2024-11-07 11:32:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-07 11:32:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-07 11:32:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 287 transitions. [2024-11-07 11:32:36,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3192436040044494 [2024-11-07 11:32:36,137 INFO L175 Difference]: Start difference. First operand has 431 places, 1847 transitions, 37214 flow. Second operand 31 states and 287 transitions. [2024-11-07 11:32:36,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 2018 transitions, 44046 flow [2024-11-07 11:32:45,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 2018 transitions, 39855 flow, removed 2051 selfloop flow, removed 28 redundant places. [2024-11-07 11:32:45,985 INFO L231 Difference]: Finished difference. Result has 427 places, 1886 transitions, 37802 flow [2024-11-07 11:32:45,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=33473, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=37802, PETRI_PLACES=427, PETRI_TRANSITIONS=1886} [2024-11-07 11:32:45,987 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 398 predicate places. [2024-11-07 11:32:45,987 INFO L471 AbstractCegarLoop]: Abstraction has has 427 places, 1886 transitions, 37802 flow [2024-11-07 11:32:45,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.147058823529412) internal successors, (209), 34 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:32:45,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:32:45,988 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:32:45,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 11:32:46,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-07 11:32:46,188 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:32:46,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:32:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash -947273369, now seen corresponding path program 6 times [2024-11-07 11:32:46,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:32:46,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271182973] [2024-11-07 11:32:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:32:46,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:32:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:32:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:32:47,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:32:47,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271182973] [2024-11-07 11:32:47,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271182973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:32:47,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421688590] [2024-11-07 11:32:47,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:32:47,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:32:47,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:32:47,174 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:32:47,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-07 11:32:47,260 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-07 11:32:47,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:32:47,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 11:32:47,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:32:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:32:47,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:32:47,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:32:47,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-07 11:32:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 11:32:47,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421688590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:32:47,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:32:47,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 10] total 35 [2024-11-07 11:32:47,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521727939] [2024-11-07 11:32:47,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:32:47,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 11:32:47,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:32:47,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 11:32:47,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 11:32:47,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-07 11:32:47,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 1886 transitions, 37802 flow. Second operand has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 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 11:32:47,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:32:47,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-07 11:32:47,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:32:54,770 INFO L124 PetriNetUnfolderBase]: 9479/17532 cut-off events. [2024-11-07 11:32:54,770 INFO L125 PetriNetUnfolderBase]: For 565006/565006 co-relation queries the response was YES. [2024-11-07 11:32:55,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144181 conditions, 17532 events. 9479/17532 cut-off events. For 565006/565006 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 138550 event pairs, 806 based on Foata normal form. 1/17533 useless extension candidates. Maximal degree in co-relation 144052. Up to 8537 conditions per place. [2024-11-07 11:32:55,127 INFO L140 encePairwiseOnDemand]: 16/29 looper letters, 912 selfloop transitions, 1142 changer transitions 23/2079 dead transitions. [2024-11-07 11:32:55,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 2079 transitions, 44726 flow [2024-11-07 11:32:55,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-07 11:32:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-07 11:32:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 284 transitions. [2024-11-07 11:32:55,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3497536945812808 [2024-11-07 11:32:55,129 INFO L175 Difference]: Start difference. First operand has 427 places, 1886 transitions, 37802 flow. Second operand 28 states and 284 transitions. [2024-11-07 11:32:55,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 2079 transitions, 44726 flow