./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/weaver/popl20-mult-4.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', 'b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-mult-4.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 b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:30:41,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:30:41,134 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:30:41,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:30:41,140 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:30:41,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:30:41,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:30:41,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:30:41,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:30:41,173 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:30:41,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:30:41,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:30:41,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:30:41,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:30:41,174 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:30:41,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:30:41,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:30:41,175 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:30:41,175 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:30:41,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:30:41,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:30:41,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:30:41,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:30:41,176 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:30:41,176 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:30:41,176 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:30:41,176 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:30:41,176 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:30:41,177 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:30:41,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:30:41,177 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:30:41,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:30:41,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:30:41,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:30:41,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:30:41,178 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:30:41,178 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:30:41,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:30:41,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:30:41,179 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:30:41,179 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:30:41,179 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:30:41,179 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 -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2024-11-07 11:30:41,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:30:41,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:30:41,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:30:41,503 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:30:41,505 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:30:41,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-07 11:30:42,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:30:43,040 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:30:43,041 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-07 11:30:43,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/556d5cd24/b85a68f1742c45e2b3ba4dea2a0483b8/FLAGd127fc30e [2024-11-07 11:30:43,410 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/556d5cd24/b85a68f1742c45e2b3ba4dea2a0483b8 [2024-11-07 11:30:43,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:30:43,413 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:30:43,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:30:43,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:30:43,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:30:43,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46bc6227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43, skipping insertion in model container [2024-11-07 11:30:43,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,432 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:30:43,598 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2664,2677] [2024-11-07 11:30:43,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:30:43,613 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:30:43,637 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2664,2677] [2024-11-07 11:30:43,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:30:43,658 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:30:43,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43 WrapperNode [2024-11-07 11:30:43,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:30:43,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:30:43,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:30:43,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:30:43,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,698 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 98 [2024-11-07 11:30:43,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:30:43,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:30:43,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:30:43,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:30:43,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,712 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,733 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 11:30:43,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:30:43,756 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:30:43,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:30:43,756 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:30:43,757 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (1/1) ... [2024-11-07 11:30:43,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:30:43,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:43,788 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 11:30:43,794 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 11:30:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:30:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:30:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:30:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:30:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:30:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 11:30:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 11:30:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-07 11:30:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-07 11:30:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:30:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 11:30:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 11:30:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:30:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:30:43,824 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 11:30:43,920 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:30:43,922 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:30:44,126 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:30:44,126 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:30:44,264 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:30:44,264 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 11:30:44,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:30:44 BoogieIcfgContainer [2024-11-07 11:30:44,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:30:44,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:30:44,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:30:44,273 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:30:44,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:30:43" (1/3) ... [2024-11-07 11:30:44,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee8e832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:30:44, skipping insertion in model container [2024-11-07 11:30:44,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:43" (2/3) ... [2024-11-07 11:30:44,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee8e832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:30:44, skipping insertion in model container [2024-11-07 11:30:44,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:30:44" (3/3) ... [2024-11-07 11:30:44,276 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-11-07 11:30:44,288 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:30:44,289 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:30:44,289 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:30:44,363 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-07 11:30:44,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-11-07 11:30:44,430 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-07 11:30:44,434 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-07 11:30:44,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-07 11:30:44,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-11-07 11:30:44,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-11-07 11:30:44,451 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:30:44,464 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;@1bf1dc3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:30:44,464 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-07 11:30:44,478 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:30:44,479 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-07 11:30:44,479 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-07 11:30:44,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:44,480 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 11:30:44,480 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 11:30:44,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:44,484 INFO L85 PathProgramCache]: Analyzing trace with hash -196909692, now seen corresponding path program 1 times [2024-11-07 11:30:44,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:44,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651461048] [2024-11-07 11:30:44,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:44,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:44,900 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 11:30:44,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:44,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651461048] [2024-11-07 11:30:44,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651461048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:30:44,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:30:44,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:30:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839093370] [2024-11-07 11:30:44,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:30:44,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:30:44,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:44,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:30:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:30:44,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-07 11:30:44,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 11:30:44,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:44,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-07 11:30:44,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:45,551 INFO L124 PetriNetUnfolderBase]: 3042/4228 cut-off events. [2024-11-07 11:30:45,551 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2024-11-07 11:30:45,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8628 conditions, 4228 events. 3042/4228 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18771 event pairs, 763 based on Foata normal form. 152/4370 useless extension candidates. Maximal degree in co-relation 7622. Up to 3203 conditions per place. [2024-11-07 11:30:45,584 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-07 11:30:45,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2024-11-07 11:30:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:30:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:30:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-07 11:30:45,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-07 11:30:45,615 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-11-07 11:30:45,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2024-11-07 11:30:45,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-07 11:30:45,631 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-07 11:30:45,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-07 11:30:45,638 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-07 11:30:45,639 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-07 11:30:45,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 11:30:45,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:45,640 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:45,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:30:45,641 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 11:30:45,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:45,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1212674722, now seen corresponding path program 1 times [2024-11-07 11:30:45,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:45,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224049520] [2024-11-07 11:30:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:45,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:45,872 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 11:30:45,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:45,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224049520] [2024-11-07 11:30:45,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224049520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:30:45,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:30:45,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:30:45,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817271891] [2024-11-07 11:30:45,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:30:45,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:30:45,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:45,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:30:45,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:30:45,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-07 11:30:45,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 11:30:45,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:45,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-07 11:30:45,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:47,141 INFO L124 PetriNetUnfolderBase]: 11982/15969 cut-off events. [2024-11-07 11:30:47,142 INFO L125 PetriNetUnfolderBase]: For 965/965 co-relation queries the response was YES. [2024-11-07 11:30:47,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33885 conditions, 15969 events. 11982/15969 cut-off events. For 965/965 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 80300 event pairs, 4246 based on Foata normal form. 0/12597 useless extension candidates. Maximal degree in co-relation 9444. Up to 8562 conditions per place. [2024-11-07 11:30:47,267 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-11-07 11:30:47,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 418 flow [2024-11-07 11:30:47,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:30:47,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:30:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-07 11:30:47,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-11-07 11:30:47,269 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 129 transitions. [2024-11-07 11:30:47,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 418 flow [2024-11-07 11:30:47,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:30:47,272 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2024-11-07 11:30:47,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-11-07 11:30:47,274 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-07 11:30:47,274 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2024-11-07 11:30:47,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 11:30:47,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:47,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:47,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:30:47,275 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 11:30:47,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:47,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1378229130, now seen corresponding path program 2 times [2024-11-07 11:30:47,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:47,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964321279] [2024-11-07 11:30:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:47,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:47,505 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 11:30:47,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:47,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964321279] [2024-11-07 11:30:47,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964321279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:30:47,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:30:47,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:30:47,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471340885] [2024-11-07 11:30:47,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:30:47,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:30:47,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:47,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:30:47,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:30:47,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-07 11:30:47,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 11:30:47,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:47,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-07 11:30:47,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:49,206 INFO L124 PetriNetUnfolderBase]: 17012/23075 cut-off events. [2024-11-07 11:30:49,207 INFO L125 PetriNetUnfolderBase]: For 10240/10264 co-relation queries the response was YES. [2024-11-07 11:30:49,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59304 conditions, 23075 events. 17012/23075 cut-off events. For 10240/10264 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 128533 event pairs, 1739 based on Foata normal form. 1551/24214 useless extension candidates. Maximal degree in co-relation 34291. Up to 6690 conditions per place. [2024-11-07 11:30:49,371 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 119 selfloop transitions, 23 changer transitions 2/149 dead transitions. [2024-11-07 11:30:49,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 149 transitions, 759 flow [2024-11-07 11:30:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:30:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:30:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-11-07 11:30:49,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2024-11-07 11:30:49,377 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 7 states and 188 transitions. [2024-11-07 11:30:49,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 149 transitions, 759 flow [2024-11-07 11:30:49,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 149 transitions, 759 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:30:49,388 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 355 flow [2024-11-07 11:30:49,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=355, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2024-11-07 11:30:49,390 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2024-11-07 11:30:49,390 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 355 flow [2024-11-07 11:30:49,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 11:30:49,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:49,391 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:49,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:30:49,391 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 11:30:49,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1181142688, now seen corresponding path program 3 times [2024-11-07 11:30:49,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:49,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5433608] [2024-11-07 11:30:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:49,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:49,563 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 11:30:49,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:49,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5433608] [2024-11-07 11:30:49,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5433608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:30:49,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:30:49,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:30:49,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600046690] [2024-11-07 11:30:49,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:30:49,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:30:49,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:49,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:30:49,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:30:49,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-07 11:30:49,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 355 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 11:30:49,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:49,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-07 11:30:49,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:51,346 INFO L124 PetriNetUnfolderBase]: 22345/30237 cut-off events. [2024-11-07 11:30:51,346 INFO L125 PetriNetUnfolderBase]: For 50507/50583 co-relation queries the response was YES. [2024-11-07 11:30:51,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97892 conditions, 30237 events. 22345/30237 cut-off events. For 50507/50583 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 170935 event pairs, 6489 based on Foata normal form. 556/30186 useless extension candidates. Maximal degree in co-relation 53450. Up to 15419 conditions per place. [2024-11-07 11:30:51,564 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 103 selfloop transitions, 12 changer transitions 9/129 dead transitions. [2024-11-07 11:30:51,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 129 transitions, 891 flow [2024-11-07 11:30:51,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:30:51,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:30:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-07 11:30:51,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-11-07 11:30:51,566 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 355 flow. Second operand 5 states and 129 transitions. [2024-11-07 11:30:51,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 129 transitions, 891 flow [2024-11-07 11:30:51,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 129 transitions, 879 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-07 11:30:51,908 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 440 flow [2024-11-07 11:30:51,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=440, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-11-07 11:30:51,909 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-11-07 11:30:51,909 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 440 flow [2024-11-07 11:30:51,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 11:30:51,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:51,909 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:51,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:30:51,910 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 11:30:51,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:51,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1923555558, now seen corresponding path program 1 times [2024-11-07 11:30:51,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:51,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955035375] [2024-11-07 11:30:51,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:51,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:52,038 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 11:30:52,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:52,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955035375] [2024-11-07 11:30:52,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955035375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:30:52,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:30:52,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:30:52,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884671672] [2024-11-07 11:30:52,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:30:52,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:30:52,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:30:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:30:52,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-07 11:30:52,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 11:30:52,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:52,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-07 11:30:52,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:53,852 INFO L124 PetriNetUnfolderBase]: 22445/30176 cut-off events. [2024-11-07 11:30:53,853 INFO L125 PetriNetUnfolderBase]: For 91411/91433 co-relation queries the response was YES. [2024-11-07 11:30:53,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110644 conditions, 30176 events. 22445/30176 cut-off events. For 91411/91433 co-relation queries the response was YES. Maximal size of possible extension queue 1126. Compared 166708 event pairs, 7842 based on Foata normal form. 114/29521 useless extension candidates. Maximal degree in co-relation 49421. Up to 15999 conditions per place. [2024-11-07 11:30:54,035 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 71 selfloop transitions, 9 changer transitions 29/114 dead transitions. [2024-11-07 11:30:54,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 114 transitions, 876 flow [2024-11-07 11:30:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:30:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:30:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-11-07 11:30:54,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-07 11:30:54,037 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 440 flow. Second operand 5 states and 124 transitions. [2024-11-07 11:30:54,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 114 transitions, 876 flow [2024-11-07 11:30:54,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 812 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-11-07 11:30:54,367 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 413 flow [2024-11-07 11:30:54,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-11-07 11:30:54,368 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 24 predicate places. [2024-11-07 11:30:54,368 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 413 flow [2024-11-07 11:30:54,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 11:30:54,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:54,368 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:54,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:30:54,369 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 11:30:54,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash 861508722, now seen corresponding path program 4 times [2024-11-07 11:30:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:54,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435901758] [2024-11-07 11:30:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:54,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:54,497 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 11:30:54,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:54,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435901758] [2024-11-07 11:30:54,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435901758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:30:54,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:30:54,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:30:54,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864546109] [2024-11-07 11:30:54,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:30:54,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:30:54,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:54,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:30:54,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:30:54,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-07 11:30:54,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 413 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 11:30:54,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:54,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-07 11:30:54,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:55,996 INFO L124 PetriNetUnfolderBase]: 21387/28703 cut-off events. [2024-11-07 11:30:55,997 INFO L125 PetriNetUnfolderBase]: For 74254/74326 co-relation queries the response was YES. [2024-11-07 11:30:56,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101382 conditions, 28703 events. 21387/28703 cut-off events. For 74254/74326 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 155781 event pairs, 6396 based on Foata normal form. 562/28612 useless extension candidates. Maximal degree in co-relation 65402. Up to 10986 conditions per place. [2024-11-07 11:30:56,163 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 105 selfloop transitions, 35 changer transitions 3/148 dead transitions. [2024-11-07 11:30:56,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 148 transitions, 1127 flow [2024-11-07 11:30:56,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:30:56,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:30:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-11-07 11:30:56,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-11-07 11:30:56,165 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 413 flow. Second operand 6 states and 155 transitions. [2024-11-07 11:30:56,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 148 transitions, 1127 flow [2024-11-07 11:30:56,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 148 transitions, 1071 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-07 11:30:56,407 INFO L231 Difference]: Finished difference. Result has 71 places, 80 transitions, 689 flow [2024-11-07 11:30:56,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=689, PETRI_PLACES=71, PETRI_TRANSITIONS=80} [2024-11-07 11:30:56,407 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2024-11-07 11:30:56,408 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 80 transitions, 689 flow [2024-11-07 11:30:56,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 11:30:56,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:56,408 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:56,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:30:56,408 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 11:30:56,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:56,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1556545025, now seen corresponding path program 1 times [2024-11-07 11:30:56,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:56,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045527348] [2024-11-07 11:30:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:56,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:56,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:56,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045527348] [2024-11-07 11:30:56,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045527348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:56,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053655257] [2024-11-07 11:30:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:56,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:56,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:56,561 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 11:30:56,563 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 11:30:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:56,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:30:56,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:56,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:56,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053655257] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:56,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:30:56,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-11-07 11:30:56,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628061457] [2024-11-07 11:30:56,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:30:56,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:30:56,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:56,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:30:56,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:30:56,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-07 11:30:56,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 80 transitions, 689 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 11:30:56,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:56,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-07 11:30:56,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:58,930 INFO L124 PetriNetUnfolderBase]: 23218/31449 cut-off events. [2024-11-07 11:30:58,931 INFO L125 PetriNetUnfolderBase]: For 116623/116649 co-relation queries the response was YES. [2024-11-07 11:30:58,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126099 conditions, 31449 events. 23218/31449 cut-off events. For 116623/116649 co-relation queries the response was YES. Maximal size of possible extension queue 1214. Compared 177971 event pairs, 2979 based on Foata normal form. 915/31862 useless extension candidates. Maximal degree in co-relation 81751. Up to 15130 conditions per place. [2024-11-07 11:30:59,089 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 108 selfloop transitions, 21 changer transitions 0/134 dead transitions. [2024-11-07 11:30:59,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 134 transitions, 1364 flow [2024-11-07 11:30:59,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:30:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:30:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-07 11:30:59,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-11-07 11:30:59,090 INFO L175 Difference]: Start difference. First operand has 71 places, 80 transitions, 689 flow. Second operand 4 states and 98 transitions. [2024-11-07 11:30:59,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 134 transitions, 1364 flow [2024-11-07 11:30:59,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 134 transitions, 1268 flow, removed 39 selfloop flow, removed 1 redundant places. [2024-11-07 11:30:59,377 INFO L231 Difference]: Finished difference. Result has 73 places, 84 transitions, 737 flow [2024-11-07 11:30:59,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=737, PETRI_PLACES=73, PETRI_TRANSITIONS=84} [2024-11-07 11:30:59,378 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2024-11-07 11:30:59,378 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 84 transitions, 737 flow [2024-11-07 11:30:59,378 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 11:30:59,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:59,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:59,391 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 11:30:59,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:59,579 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 11:30:59,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1417153903, now seen corresponding path program 2 times [2024-11-07 11:30:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:59,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943288496] [2024-11-07 11:30:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:59,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:30:59,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:59,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943288496] [2024-11-07 11:30:59,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943288496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:30:59,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:30:59,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:30:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709124184] [2024-11-07 11:30:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:30:59,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:30:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:30:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:30:59,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-07 11:30:59,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 84 transitions, 737 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 11:30:59,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:59,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-07 11:30:59,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:02,239 INFO L124 PetriNetUnfolderBase]: 28978/38784 cut-off events. [2024-11-07 11:31:02,239 INFO L125 PetriNetUnfolderBase]: For 175708/175746 co-relation queries the response was YES. [2024-11-07 11:31:02,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167271 conditions, 38784 events. 28978/38784 cut-off events. For 175708/175746 co-relation queries the response was YES. Maximal size of possible extension queue 1469. Compared 219521 event pairs, 7781 based on Foata normal form. 200/38198 useless extension candidates. Maximal degree in co-relation 115193. Up to 19286 conditions per place. [2024-11-07 11:31:02,483 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 148 selfloop transitions, 24 changer transitions 1/178 dead transitions. [2024-11-07 11:31:02,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 178 transitions, 1840 flow [2024-11-07 11:31:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:31:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:31:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-07 11:31:02,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-11-07 11:31:02,486 INFO L175 Difference]: Start difference. First operand has 73 places, 84 transitions, 737 flow. Second operand 5 states and 123 transitions. [2024-11-07 11:31:02,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 178 transitions, 1840 flow [2024-11-07 11:31:02,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 178 transitions, 1789 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-07 11:31:02,995 INFO L231 Difference]: Finished difference. Result has 78 places, 97 transitions, 940 flow [2024-11-07 11:31:02,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=940, PETRI_PLACES=78, PETRI_TRANSITIONS=97} [2024-11-07 11:31:02,996 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 34 predicate places. [2024-11-07 11:31:02,996 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 97 transitions, 940 flow [2024-11-07 11:31:02,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:02,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:02,996 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:02,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 11:31:02,996 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 11:31:02,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:02,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1829799521, now seen corresponding path program 3 times [2024-11-07 11:31:02,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:02,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487887995] [2024-11-07 11:31:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:03,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:03,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487887995] [2024-11-07 11:31:03,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487887995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:03,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692413465] [2024-11-07 11:31:03,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:31:03,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:03,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:03,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:03,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 11:31:03,206 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:31:03,206 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:03,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:31:03,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:03,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:03,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692413465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:03,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:03,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-07 11:31:03,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705475162] [2024-11-07 11:31:03,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:03,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 11:31:03,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 11:31:03,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-07 11:31:03,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-07 11:31:03,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 97 transitions, 940 flow. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:03,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:03,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-07 11:31:03,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:06,592 INFO L124 PetriNetUnfolderBase]: 36553/49922 cut-off events. [2024-11-07 11:31:06,592 INFO L125 PetriNetUnfolderBase]: For 276233/276267 co-relation queries the response was YES. [2024-11-07 11:31:06,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230047 conditions, 49922 events. 36553/49922 cut-off events. For 276233/276267 co-relation queries the response was YES. Maximal size of possible extension queue 1836. Compared 301182 event pairs, 7282 based on Foata normal form. 1015/50066 useless extension candidates. Maximal degree in co-relation 154521. Up to 17366 conditions per place. [2024-11-07 11:31:06,911 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 207 selfloop transitions, 76 changer transitions 1/289 dead transitions. [2024-11-07 11:31:06,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 289 transitions, 3343 flow [2024-11-07 11:31:06,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:31:06,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:31:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-11-07 11:31:06,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-11-07 11:31:06,913 INFO L175 Difference]: Start difference. First operand has 78 places, 97 transitions, 940 flow. Second operand 7 states and 172 transitions. [2024-11-07 11:31:06,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 289 transitions, 3343 flow [2024-11-07 11:31:07,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 289 transitions, 3224 flow, removed 37 selfloop flow, removed 1 redundant places. [2024-11-07 11:31:07,541 INFO L231 Difference]: Finished difference. Result has 88 places, 156 transitions, 2027 flow [2024-11-07 11:31:07,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2027, PETRI_PLACES=88, PETRI_TRANSITIONS=156} [2024-11-07 11:31:07,541 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2024-11-07 11:31:07,541 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 156 transitions, 2027 flow [2024-11-07 11:31:07,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:07,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:07,542 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:07,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 11:31:07,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:07,743 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 11:31:07,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:07,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1451895657, now seen corresponding path program 4 times [2024-11-07 11:31:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:07,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569893138] [2024-11-07 11:31:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:07,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:07,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:07,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569893138] [2024-11-07 11:31:07,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569893138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:07,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:07,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:31:07,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685540648] [2024-11-07 11:31:07,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:07,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:31:07,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:07,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:31:07,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:31:07,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-07 11:31:07,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 156 transitions, 2027 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:07,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:07,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-07 11:31:07,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:11,616 INFO L124 PetriNetUnfolderBase]: 36999/50104 cut-off events. [2024-11-07 11:31:11,616 INFO L125 PetriNetUnfolderBase]: For 394247/394301 co-relation queries the response was YES. [2024-11-07 11:31:11,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256786 conditions, 50104 events. 36999/50104 cut-off events. For 394247/394301 co-relation queries the response was YES. Maximal size of possible extension queue 1758. Compared 294798 event pairs, 11919 based on Foata normal form. 104/48986 useless extension candidates. Maximal degree in co-relation 180710. Up to 24662 conditions per place. [2024-11-07 11:31:11,977 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 175 selfloop transitions, 7 changer transitions 17/204 dead transitions. [2024-11-07 11:31:11,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 204 transitions, 2782 flow [2024-11-07 11:31:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:31:11,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:31:11,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-07 11:31:11,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-11-07 11:31:11,978 INFO L175 Difference]: Start difference. First operand has 88 places, 156 transitions, 2027 flow. Second operand 5 states and 108 transitions. [2024-11-07 11:31:11,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 204 transitions, 2782 flow [2024-11-07 11:31:13,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 204 transitions, 2654 flow, removed 64 selfloop flow, removed 2 redundant places. [2024-11-07 11:31:13,405 INFO L231 Difference]: Finished difference. Result has 91 places, 154 transitions, 1937 flow [2024-11-07 11:31:13,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1937, PETRI_PLACES=91, PETRI_TRANSITIONS=154} [2024-11-07 11:31:13,405 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 47 predicate places. [2024-11-07 11:31:13,405 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 154 transitions, 1937 flow [2024-11-07 11:31:13,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:13,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:13,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:13,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 11:31:13,406 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 11:31:13,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:13,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1372284545, now seen corresponding path program 1 times [2024-11-07 11:31:13,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:13,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058457784] [2024-11-07 11:31:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:13,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:13,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:13,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058457784] [2024-11-07 11:31:13,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058457784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:13,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:13,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:31:13,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905714814] [2024-11-07 11:31:13,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:13,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:31:13,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:13,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:31:13,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:31:13,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-07 11:31:13,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 154 transitions, 1937 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:13,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:13,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-07 11:31:13,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:18,130 INFO L124 PetriNetUnfolderBase]: 47704/63921 cut-off events. [2024-11-07 11:31:18,131 INFO L125 PetriNetUnfolderBase]: For 521446/521514 co-relation queries the response was YES. [2024-11-07 11:31:18,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330840 conditions, 63921 events. 47704/63921 cut-off events. For 521446/521514 co-relation queries the response was YES. Maximal size of possible extension queue 2354. Compared 381364 event pairs, 11903 based on Foata normal form. 722/62918 useless extension candidates. Maximal degree in co-relation 258682. Up to 28686 conditions per place. [2024-11-07 11:31:18,969 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 160 selfloop transitions, 113 changer transitions 0/278 dead transitions. [2024-11-07 11:31:18,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 278 transitions, 3818 flow [2024-11-07 11:31:18,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:31:18,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:31:18,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-07 11:31:18,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-07 11:31:18,970 INFO L175 Difference]: Start difference. First operand has 91 places, 154 transitions, 1937 flow. Second operand 5 states and 128 transitions. [2024-11-07 11:31:18,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 278 transitions, 3818 flow [2024-11-07 11:31:21,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 278 transitions, 3698 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-11-07 11:31:21,225 INFO L231 Difference]: Finished difference. Result has 90 places, 188 transitions, 2772 flow [2024-11-07 11:31:21,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2772, PETRI_PLACES=90, PETRI_TRANSITIONS=188} [2024-11-07 11:31:21,225 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 46 predicate places. [2024-11-07 11:31:21,225 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 188 transitions, 2772 flow [2024-11-07 11:31:21,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:21,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:21,226 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:21,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 11:31:21,226 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 11:31:21,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:21,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2115531539, now seen corresponding path program 2 times [2024-11-07 11:31:21,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:21,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915498058] [2024-11-07 11:31:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:21,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:21,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:21,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915498058] [2024-11-07 11:31:21,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915498058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:21,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270973906] [2024-11-07 11:31:21,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:31:21,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:21,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:21,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:31:21,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 11:31:21,535 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:31:21,536 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:21,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:31:21,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:21,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:31:21,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270973906] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:21,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:31:21,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-11-07 11:31:21,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412960816] [2024-11-07 11:31:21,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:21,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:31:21,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:21,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:31:21,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:31:21,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-07 11:31:21,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 188 transitions, 2772 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:21,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:21,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-07 11:31:21,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:26,738 INFO L124 PetriNetUnfolderBase]: 52170/69784 cut-off events. [2024-11-07 11:31:26,738 INFO L125 PetriNetUnfolderBase]: For 675267/675401 co-relation queries the response was YES. [2024-11-07 11:31:27,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392766 conditions, 69784 events. 52170/69784 cut-off events. For 675267/675401 co-relation queries the response was YES. Maximal size of possible extension queue 2642. Compared 420046 event pairs, 6561 based on Foata normal form. 1731/69507 useless extension candidates. Maximal degree in co-relation 269507. Up to 36214 conditions per place. [2024-11-07 11:31:27,464 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 228 selfloop transitions, 51 changer transitions 0/284 dead transitions. [2024-11-07 11:31:27,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 284 transitions, 4660 flow [2024-11-07 11:31:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:31:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:31:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-11-07 11:31:27,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-07 11:31:27,465 INFO L175 Difference]: Start difference. First operand has 90 places, 188 transitions, 2772 flow. Second operand 4 states and 95 transitions. [2024-11-07 11:31:27,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 284 transitions, 4660 flow [2024-11-07 11:31:30,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 284 transitions, 4451 flow, removed 70 selfloop flow, removed 2 redundant places. [2024-11-07 11:31:30,557 INFO L231 Difference]: Finished difference. Result has 93 places, 198 transitions, 2973 flow [2024-11-07 11:31:30,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2651, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2973, PETRI_PLACES=93, PETRI_TRANSITIONS=198} [2024-11-07 11:31:30,558 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2024-11-07 11:31:30,558 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 198 transitions, 2973 flow [2024-11-07 11:31:30,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:30,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:30,558 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:30,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 11:31:30,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:30,759 INFO L396 AbstractCegarLoop]: === Iteration 13 === 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 11:31:30,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:30,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1909169881, now seen corresponding path program 3 times [2024-11-07 11:31:30,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:30,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727068368] [2024-11-07 11:31:30,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:30,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:30,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:31:30,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:30,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727068368] [2024-11-07 11:31:30,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727068368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:31:30,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:31:30,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:31:30,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008834863] [2024-11-07 11:31:30,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:31:30,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:31:30,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:30,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:31:30,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:31:30,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-07 11:31:30,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 198 transitions, 2973 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:30,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:30,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-07 11:31:30,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand