./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp2x9.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/bench-exp2x9.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', 'af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6'] 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/bench-exp2x9.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 af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:21:01,638 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:21:01,688 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:21:01,692 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:21:01,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:21:01,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:21:01,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:21:01,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:21:01,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:21:01,717 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:21:01,717 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:21:01,717 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:21:01,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:21:01,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:21:01,720 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:21:01,720 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:21:01,720 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:21:01,720 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:21:01,721 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:21:01,721 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:21:01,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:21:01,721 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:21:01,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:21:01,721 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:21:01,721 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:21:01,721 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:21:01,721 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:21:01,721 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:21:01,722 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:21:01,722 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:21:01,722 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:21:01,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:21:01,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:21:01,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:21:01,722 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:21:01,722 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:21:01,723 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:21:01,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:21:01,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:21:01,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:21:01,723 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:21:01,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:21:01,723 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 -> af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6 [2024-11-07 11:21:01,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:21:01,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:21:02,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:21:02,002 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:21:02,002 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:21:02,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2024-11-07 11:21:03,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:21:03,329 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:21:03,330 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2024-11-07 11:21:03,337 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cebfd2b06/be0a0c9cca90452d96537b9a118faf76/FLAGba47dca8e [2024-11-07 11:21:03,353 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cebfd2b06/be0a0c9cca90452d96537b9a118faf76 [2024-11-07 11:21:03,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:21:03,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:21:03,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:21:03,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:21:03,361 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:21:03,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@754f7855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03, skipping insertion in model container [2024-11-07 11:21:03,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,375 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:21:03,513 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/bench-exp2x9.wvr.c[2721,2734] [2024-11-07 11:21:03,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:21:03,526 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:21:03,547 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/bench-exp2x9.wvr.c[2721,2734] [2024-11-07 11:21:03,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:21:03,559 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:21:03,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03 WrapperNode [2024-11-07 11:21:03,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:21:03,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:21:03,561 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:21:03,561 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:21:03,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,570 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,586 INFO L138 Inliner]: procedures = 19, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-07 11:21:03,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:21:03,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:21:03,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:21:03,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:21:03,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,595 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,607 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 11:21:03,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,609 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,624 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:21:03,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:21:03,626 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:21:03,626 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:21:03,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (1/1) ... [2024-11-07 11:21:03,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:21:03,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:03,651 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 11:21:03,653 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 11:21:03,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:21:03,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:21:03,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:21:03,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:21:03,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:21:03,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 11:21:03,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 11:21:03,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-07 11:21:03,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-07 11:21:03,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:21:03,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:21:03,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:21:03,670 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 11:21:03,745 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:21:03,746 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:21:03,891 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:21:03,892 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:21:04,029 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:21:04,031 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 11:21:04,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:21:04 BoogieIcfgContainer [2024-11-07 11:21:04,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:21:04,033 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:21:04,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:21:04,037 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:21:04,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:21:03" (1/3) ... [2024-11-07 11:21:04,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab6c237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:21:04, skipping insertion in model container [2024-11-07 11:21:04,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:21:03" (2/3) ... [2024-11-07 11:21:04,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab6c237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:21:04, skipping insertion in model container [2024-11-07 11:21:04,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:21:04" (3/3) ... [2024-11-07 11:21:04,039 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2024-11-07 11:21:04,050 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:21:04,050 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:21:04,050 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:21:04,109 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-07 11:21:04,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 92 flow [2024-11-07 11:21:04,167 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-07 11:21:04,170 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-07 11:21:04,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 28 events. 4/28 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-07 11:21:04,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 32 transitions, 92 flow [2024-11-07 11:21:04,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 27 transitions, 78 flow [2024-11-07 11:21:04,183 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:21:04,194 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;@337a55b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:21:04,196 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-07 11:21:04,208 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:21:04,208 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-11-07 11:21:04,208 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-07 11:21:04,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:04,209 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] [2024-11-07 11:21:04,210 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:21:04,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:04,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1825658945, now seen corresponding path program 1 times [2024-11-07 11:21:04,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:04,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447226880] [2024-11-07 11:21:04,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:04,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:04,577 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 11:21:04,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:04,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447226880] [2024-11-07 11:21:04,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447226880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:04,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:04,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:21:04,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142789103] [2024-11-07 11:21:04,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:04,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:21:04,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:04,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:21:04,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:21:04,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 11:21:04,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 11:21:04,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:04,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 11:21:04,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:04,859 INFO L124 PetriNetUnfolderBase]: 1367/1732 cut-off events. [2024-11-07 11:21:04,860 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-07 11:21:04,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 1732 events. 1367/1732 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5555 event pairs, 123 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 3091. Up to 1541 conditions per place. [2024-11-07 11:21:04,875 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 35 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-11-07 11:21:04,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 219 flow [2024-11-07 11:21:04,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:21:04,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:21:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-07 11:21:04,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-07 11:21:04,887 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 78 flow. Second operand 3 states and 69 transitions. [2024-11-07 11:21:04,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 219 flow [2024-11-07 11:21:04,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-07 11:21:04,897 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 95 flow [2024-11-07 11:21:04,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2024-11-07 11:21:04,903 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-11-07 11:21:04,903 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 95 flow [2024-11-07 11:21:04,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 11:21:04,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:04,903 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 11:21:04,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:21:04,904 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:21:04,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1779863488, now seen corresponding path program 1 times [2024-11-07 11:21:04,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:04,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279030420] [2024-11-07 11:21:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:04,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:21:05,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:05,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279030420] [2024-11-07 11:21:05,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279030420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:05,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:05,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:05,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995132615] [2024-11-07 11:21:05,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:05,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:05,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:05,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:05,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:05,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 11:21:05,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:05,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:05,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 11:21:05,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:05,268 INFO L124 PetriNetUnfolderBase]: 1593/2038 cut-off events. [2024-11-07 11:21:05,268 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2024-11-07 11:21:05,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 2038 events. 1593/2038 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7003 event pairs, 113 based on Foata normal form. 34/2066 useless extension candidates. Maximal degree in co-relation 1272. Up to 842 conditions per place. [2024-11-07 11:21:05,279 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 66 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-11-07 11:21:05,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 81 transitions, 391 flow [2024-11-07 11:21:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:05,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-07 11:21:05,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-07 11:21:05,282 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 95 flow. Second operand 5 states and 115 transitions. [2024-11-07 11:21:05,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 81 transitions, 391 flow [2024-11-07 11:21:05,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 81 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:05,285 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 155 flow [2024-11-07 11:21:05,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2024-11-07 11:21:05,286 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-11-07 11:21:05,286 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 155 flow [2024-11-07 11:21:05,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:05,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:05,286 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 11:21:05,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:21:05,287 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:21:05,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash -823057285, now seen corresponding path program 1 times [2024-11-07 11:21:05,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:05,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120927008] [2024-11-07 11:21:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:05,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:21:05,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:05,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120927008] [2024-11-07 11:21:05,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120927008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:05,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:05,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:05,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608636104] [2024-11-07 11:21:05,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:05,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:05,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:05,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:05,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:05,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 11:21:05,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:05,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:05,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 11:21:05,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:05,583 INFO L124 PetriNetUnfolderBase]: 1547/1992 cut-off events. [2024-11-07 11:21:05,583 INFO L125 PetriNetUnfolderBase]: For 1776/1776 co-relation queries the response was YES. [2024-11-07 11:21:05,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6028 conditions, 1992 events. 1547/1992 cut-off events. For 1776/1776 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6975 event pairs, 95 based on Foata normal form. 46/2032 useless extension candidates. Maximal degree in co-relation 2829. Up to 812 conditions per place. [2024-11-07 11:21:05,592 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 65 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2024-11-07 11:21:05,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 78 transitions, 412 flow [2024-11-07 11:21:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:05,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-07 11:21:05,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-11-07 11:21:05,594 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 155 flow. Second operand 5 states and 113 transitions. [2024-11-07 11:21:05,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 78 transitions, 412 flow [2024-11-07 11:21:05,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 78 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:21:05,598 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 169 flow [2024-11-07 11:21:05,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-11-07 11:21:05,599 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-11-07 11:21:05,599 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 169 flow [2024-11-07 11:21:05,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:05,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:05,599 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 11:21:05,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:21:05,600 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:21:05,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:05,600 INFO L85 PathProgramCache]: Analyzing trace with hash 47067324, now seen corresponding path program 2 times [2024-11-07 11:21:05,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:05,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493699614] [2024-11-07 11:21:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:05,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:21:05,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:05,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493699614] [2024-11-07 11:21:05,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493699614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:05,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796224605] [2024-11-07 11:21:05,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:21:05,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:05,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:05,713 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 11:21:05,714 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 11:21:05,785 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:21:05,785 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:05,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 11:21:05,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:21:05,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:21:06,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796224605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:06,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:06,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-07 11:21:06,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340499696] [2024-11-07 11:21:06,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:06,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:21:06,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:06,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:21:06,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:21:06,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 11:21:06,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 11:21:06,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:06,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 11:21:06,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:06,282 INFO L124 PetriNetUnfolderBase]: 1472/1927 cut-off events. [2024-11-07 11:21:06,282 INFO L125 PetriNetUnfolderBase]: For 2610/2610 co-relation queries the response was YES. [2024-11-07 11:21:06,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 1927 events. 1472/1927 cut-off events. For 2610/2610 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7133 event pairs, 354 based on Foata normal form. 61/1970 useless extension candidates. Maximal degree in co-relation 2582. Up to 1023 conditions per place. [2024-11-07 11:21:06,294 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 65 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2024-11-07 11:21:06,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 78 transitions, 444 flow [2024-11-07 11:21:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-07 11:21:06,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-11-07 11:21:06,297 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 169 flow. Second operand 5 states and 114 transitions. [2024-11-07 11:21:06,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 78 transitions, 444 flow [2024-11-07 11:21:06,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:06,301 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 212 flow [2024-11-07 11:21:06,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2024-11-07 11:21:06,302 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-11-07 11:21:06,302 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 212 flow [2024-11-07 11:21:06,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 11:21:06,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:06,303 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 11:21:06,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 11:21:06,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:06,503 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:21:06,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:06,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2003843596, now seen corresponding path program 1 times [2024-11-07 11:21:06,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:06,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480319005] [2024-11-07 11:21:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:06,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:21:06,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:06,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480319005] [2024-11-07 11:21:06,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480319005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:06,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:06,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:06,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425415026] [2024-11-07 11:21:06,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:06,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:06,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:06,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:06,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:06,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 11:21:06,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:06,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:06,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 11:21:06,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:06,786 INFO L124 PetriNetUnfolderBase]: 1783/2410 cut-off events. [2024-11-07 11:21:06,786 INFO L125 PetriNetUnfolderBase]: For 6337/6337 co-relation queries the response was YES. [2024-11-07 11:21:06,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8750 conditions, 2410 events. 1783/2410 cut-off events. For 6337/6337 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9863 event pairs, 285 based on Foata normal form. 64/2452 useless extension candidates. Maximal degree in co-relation 5382. Up to 1013 conditions per place. [2024-11-07 11:21:06,798 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2024-11-07 11:21:06,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 104 transitions, 803 flow [2024-11-07 11:21:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-07 11:21:06,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-07 11:21:06,800 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 212 flow. Second operand 5 states and 108 transitions. [2024-11-07 11:21:06,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 104 transitions, 803 flow [2024-11-07 11:21:06,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 104 transitions, 778 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:06,808 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 258 flow [2024-11-07 11:21:06,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-11-07 11:21:06,809 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-11-07 11:21:06,809 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 258 flow [2024-11-07 11:21:06,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:06,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:06,809 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 11:21:06,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:21:06,809 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:21:06,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:06,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2005361948, now seen corresponding path program 2 times [2024-11-07 11:21:06,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:06,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898810857] [2024-11-07 11:21:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:21:06,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:06,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898810857] [2024-11-07 11:21:06,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898810857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:06,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:06,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:06,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673812197] [2024-11-07 11:21:06,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:06,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:06,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:06,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:06,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:06,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 11:21:06,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:06,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:06,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 11:21:06,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:07,074 INFO L124 PetriNetUnfolderBase]: 1610/2155 cut-off events. [2024-11-07 11:21:07,075 INFO L125 PetriNetUnfolderBase]: For 6116/6116 co-relation queries the response was YES. [2024-11-07 11:21:07,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9020 conditions, 2155 events. 1610/2155 cut-off events. For 6116/6116 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8188 event pairs, 91 based on Foata normal form. 31/2164 useless extension candidates. Maximal degree in co-relation 5647. Up to 897 conditions per place. [2024-11-07 11:21:07,091 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 92 selfloop transitions, 11 changer transitions 0/108 dead transitions. [2024-11-07 11:21:07,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 108 transitions, 856 flow [2024-11-07 11:21:07,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-11-07 11:21:07,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.66875 [2024-11-07 11:21:07,093 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 258 flow. Second operand 5 states and 107 transitions. [2024-11-07 11:21:07,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 108 transitions, 856 flow [2024-11-07 11:21:07,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 108 transitions, 856 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:21:07,102 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 319 flow [2024-11-07 11:21:07,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-11-07 11:21:07,103 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-11-07 11:21:07,103 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 319 flow [2024-11-07 11:21:07,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:07,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:07,104 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 11:21:07,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:21:07,104 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:21:07,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash 595424223, now seen corresponding path program 1 times [2024-11-07 11:21:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:07,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172853151] [2024-11-07 11:21:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:21:07,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:07,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172853151] [2024-11-07 11:21:07,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172853151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:07,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:07,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:07,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589467414] [2024-11-07 11:21:07,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:07,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:07,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:07,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:07,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 11:21:07,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:07,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:07,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 11:21:07,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:07,399 INFO L124 PetriNetUnfolderBase]: 1577/2122 cut-off events. [2024-11-07 11:21:07,399 INFO L125 PetriNetUnfolderBase]: For 6970/6970 co-relation queries the response was YES. [2024-11-07 11:21:07,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9540 conditions, 2122 events. 1577/2122 cut-off events. For 6970/6970 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8181 event pairs, 71 based on Foata normal form. 33/2133 useless extension candidates. Maximal degree in co-relation 5985. Up to 983 conditions per place. [2024-11-07 11:21:07,411 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 88 selfloop transitions, 8 changer transitions 4/105 dead transitions. [2024-11-07 11:21:07,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 105 transitions, 865 flow [2024-11-07 11:21:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-11-07 11:21:07,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-07 11:21:07,412 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 319 flow. Second operand 5 states and 105 transitions. [2024-11-07 11:21:07,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 105 transitions, 865 flow [2024-11-07 11:21:07,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 105 transitions, 854 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:07,418 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 322 flow [2024-11-07 11:21:07,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-11-07 11:21:07,418 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2024-11-07 11:21:07,419 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 322 flow [2024-11-07 11:21:07,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:07,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:07,419 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 11:21:07,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 11:21:07,419 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:21:07,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:07,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1102090329, now seen corresponding path program 2 times [2024-11-07 11:21:07,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:07,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378718150] [2024-11-07 11:21:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:07,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:21:07,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:07,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378718150] [2024-11-07 11:21:07,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378718150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:07,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:07,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:07,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306549548] [2024-11-07 11:21:07,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:07,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:07,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:07,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:07,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:07,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 11:21:07,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:07,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:07,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 11:21:07,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:07,659 INFO L124 PetriNetUnfolderBase]: 1515/2072 cut-off events. [2024-11-07 11:21:07,660 INFO L125 PetriNetUnfolderBase]: For 7283/7283 co-relation queries the response was YES. [2024-11-07 11:21:07,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9584 conditions, 2072 events. 1515/2072 cut-off events. For 7283/7283 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8421 event pairs, 258 based on Foata normal form. 62/2112 useless extension candidates. Maximal degree in co-relation 6013. Up to 1124 conditions per place. [2024-11-07 11:21:07,676 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2024-11-07 11:21:07,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 104 transitions, 885 flow [2024-11-07 11:21:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:07,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-07 11:21:07,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-11-07 11:21:07,678 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 322 flow. Second operand 5 states and 103 transitions. [2024-11-07 11:21:07,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 104 transitions, 885 flow [2024-11-07 11:21:07,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 872 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:07,700 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 362 flow [2024-11-07 11:21:07,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-11-07 11:21:07,701 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-11-07 11:21:07,701 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 362 flow [2024-11-07 11:21:07,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:07,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:07,701 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 11:21:07,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 11:21:07,701 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:21:07,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:07,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1184458401, now seen corresponding path program 2 times [2024-11-07 11:21:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:07,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342868613] [2024-11-07 11:21:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:07,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:21:07,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:07,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342868613] [2024-11-07 11:21:07,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342868613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:21:07,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:21:07,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:21:07,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217299333] [2024-11-07 11:21:07,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:21:07,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:21:07,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:07,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:21:07,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:21:07,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 11:21:07,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:07,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:07,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 11:21:07,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:07,974 INFO L124 PetriNetUnfolderBase]: 1447/1987 cut-off events. [2024-11-07 11:21:07,974 INFO L125 PetriNetUnfolderBase]: For 6916/6916 co-relation queries the response was YES. [2024-11-07 11:21:07,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9747 conditions, 1987 events. 1447/1987 cut-off events. For 6916/6916 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8177 event pairs, 375 based on Foata normal form. 68/2045 useless extension candidates. Maximal degree in co-relation 8621. Up to 1150 conditions per place. [2024-11-07 11:21:07,984 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2024-11-07 11:21:07,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 124 transitions, 1092 flow [2024-11-07 11:21:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:21:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:21:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-07 11:21:07,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69375 [2024-11-07 11:21:07,985 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 362 flow. Second operand 5 states and 111 transitions. [2024-11-07 11:21:07,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 124 transitions, 1092 flow [2024-11-07 11:21:07,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 1034 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-07 11:21:07,991 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 399 flow [2024-11-07 11:21:07,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-07 11:21:07,992 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2024-11-07 11:21:07,992 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 399 flow [2024-11-07 11:21:07,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:21:07,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:07,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:07,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 11:21:07,992 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:21:07,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:07,992 INFO L85 PathProgramCache]: Analyzing trace with hash -547718246, now seen corresponding path program 1 times [2024-11-07 11:21:07,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:07,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083817970] [2024-11-07 11:21:07,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:07,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:08,396 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 11:21:08,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:08,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083817970] [2024-11-07 11:21:08,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083817970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:08,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042117112] [2024-11-07 11:21:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:08,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:08,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:08,399 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 11:21:08,400 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 11:21:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:08,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:21:08,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:10,899 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 11:21:10,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:11,253 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 11:21:11,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042117112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:11,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:11,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-07 11:21:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559567678] [2024-11-07 11:21:11,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:11,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 11:21:11,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:11,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 11:21:11,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-07 11:21:11,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 11:21:11,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 399 flow. Second operand has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 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 11:21:11,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:11,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 11:21:11,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:14,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:21:23,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:21:28,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:21:30,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:21:32,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:21:33,721 INFO L124 PetriNetUnfolderBase]: 2908/4016 cut-off events. [2024-11-07 11:21:33,721 INFO L125 PetriNetUnfolderBase]: For 14442/14442 co-relation queries the response was YES. [2024-11-07 11:21:33,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19832 conditions, 4016 events. 2908/4016 cut-off events. For 14442/14442 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 18186 event pairs, 274 based on Foata normal form. 5/4011 useless extension candidates. Maximal degree in co-relation 17421. Up to 2119 conditions per place. [2024-11-07 11:21:33,742 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 224 selfloop transitions, 129 changer transitions 12/370 dead transitions. [2024-11-07 11:21:33,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 370 transitions, 3308 flow [2024-11-07 11:21:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 11:21:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-07 11:21:33,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 458 transitions. [2024-11-07 11:21:33,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6505681818181818 [2024-11-07 11:21:33,746 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 399 flow. Second operand 22 states and 458 transitions. [2024-11-07 11:21:33,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 370 transitions, 3308 flow [2024-11-07 11:21:33,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 370 transitions, 3203 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:33,768 INFO L231 Difference]: Finished difference. Result has 100 places, 184 transitions, 1982 flow [2024-11-07 11:21:33,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1982, PETRI_PLACES=100, PETRI_TRANSITIONS=184} [2024-11-07 11:21:33,769 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2024-11-07 11:21:33,769 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 184 transitions, 1982 flow [2024-11-07 11:21:33,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 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 11:21:33,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:33,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:33,783 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 11:21:33,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:33,974 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:21:33,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:33,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1112763494, now seen corresponding path program 1 times [2024-11-07 11:21:33,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:33,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778206942] [2024-11-07 11:21:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:34,310 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 11:21:34,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:34,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778206942] [2024-11-07 11:21:34,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778206942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:34,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511047155] [2024-11-07 11:21:34,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:34,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:34,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:34,312 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 11:21:34,314 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 11:21:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:34,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:21:34,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:21:36,844 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 11:21:36,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:21:37,443 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 11:21:37,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511047155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:21:37,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:21:37,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-07 11:21:37,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205465688] [2024-11-07 11:21:37,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:21:37,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:21:37,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:21:37,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:21:37,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:21:37,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 11:21:37,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 184 transitions, 1982 flow. Second operand has 16 states, 16 states have (on average 12.4375) internal successors, (199), 16 states have internal predecessors, (199), 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 11:21:37,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:21:37,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 11:21:37,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:21:42,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:21:45,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 11:21:46,101 INFO L124 PetriNetUnfolderBase]: 4549/6300 cut-off events. [2024-11-07 11:21:46,102 INFO L125 PetriNetUnfolderBase]: For 31048/31048 co-relation queries the response was YES. [2024-11-07 11:21:46,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36172 conditions, 6300 events. 4549/6300 cut-off events. For 31048/31048 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 31293 event pairs, 253 based on Foata normal form. 21/6311 useless extension candidates. Maximal degree in co-relation 35540. Up to 4273 conditions per place. [2024-11-07 11:21:46,136 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 344 selfloop transitions, 100 changer transitions 15/464 dead transitions. [2024-11-07 11:21:46,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 464 transitions, 4785 flow [2024-11-07 11:21:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 11:21:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-07 11:21:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 376 transitions. [2024-11-07 11:21:46,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.734375 [2024-11-07 11:21:46,138 INFO L175 Difference]: Start difference. First operand has 100 places, 184 transitions, 1982 flow. Second operand 16 states and 376 transitions. [2024-11-07 11:21:46,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 464 transitions, 4785 flow [2024-11-07 11:21:46,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 464 transitions, 4440 flow, removed 170 selfloop flow, removed 1 redundant places. [2024-11-07 11:21:46,222 INFO L231 Difference]: Finished difference. Result has 124 places, 282 transitions, 2977 flow [2024-11-07 11:21:46,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2977, PETRI_PLACES=124, PETRI_TRANSITIONS=282} [2024-11-07 11:21:46,223 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 88 predicate places. [2024-11-07 11:21:46,223 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 282 transitions, 2977 flow [2024-11-07 11:21:46,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.4375) internal successors, (199), 16 states have internal predecessors, (199), 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 11:21:46,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:21:46,224 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:21:46,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 11:21:46,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:46,425 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:21:46,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:21:46,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1128596426, now seen corresponding path program 2 times [2024-11-07 11:21:46,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:21:46,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230940025] [2024-11-07 11:21:46,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:21:46,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:21:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:21:46,730 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 11:21:46,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:21:46,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230940025] [2024-11-07 11:21:46,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230940025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:21:46,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211529761] [2024-11-07 11:21:46,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:21:46,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:21:46,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:21:46,732 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 11:21:46,733 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 11:21:46,879 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:21:46,879 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:21:46,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:21:46,881 INFO L278 TraceCheckSpWp]: Computing forward predicates...