./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/weaver/chl-chromosome-subst.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', '60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-chromosome-subst.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 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:22:20,051 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:22:20,118 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:22:20,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:22:20,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:22:20,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:22:20,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:22:20,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:22:20,151 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:22:20,151 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:22:20,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:22:20,152 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:22:20,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:22:20,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:22:20,152 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:22:20,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:22:20,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:22:20,153 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:22:20,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:22:20,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:22:20,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:22:20,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:22:20,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:22:20,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:22:20,153 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:22:20,154 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:22:20,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:22:20,154 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:22:20,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:22:20,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:22:20,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:22:20,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:22:20,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:22:20,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:22:20,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:22:20,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:22:20,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:22:20,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:22:20,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:22:20,155 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:22:20,155 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:22:20,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:22:20,156 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 -> 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c [2024-11-07 11:22:20,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:22:20,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:22:20,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:22:20,365 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:22:20,365 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:22:20,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2024-11-07 11:22:21,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:22:21,611 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:22:21,611 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2024-11-07 11:22:21,616 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/785b3c369/3da7743e29304a61b8bcc7ac66183ccd/FLAG79e2c0083 [2024-11-07 11:22:22,010 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/785b3c369/3da7743e29304a61b8bcc7ac66183ccd [2024-11-07 11:22:22,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:22:22,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:22:22,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:22:22,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:22:22,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:22:22,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6405996c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22, skipping insertion in model container [2024-11-07 11:22:22,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,027 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:22:22,137 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3136,3149] [2024-11-07 11:22:22,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:22:22,152 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:22:22,168 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3136,3149] [2024-11-07 11:22:22,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:22:22,181 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:22:22,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22 WrapperNode [2024-11-07 11:22:22,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:22:22,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:22:22,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:22:22,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:22:22,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,227 INFO L138 Inliner]: procedures = 25, calls = 32, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 271 [2024-11-07 11:22:22,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:22:22,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:22:22,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:22:22,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:22:22,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,241 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,260 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-07 11:22:22,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:22:22,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:22:22,285 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:22:22,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:22:22,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (1/1) ... [2024-11-07 11:22:22,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:22:22,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:22,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 11:22:22,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 11:22:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:22:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:22:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:22:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:22:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:22:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 11:22:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 11:22:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:22:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:22:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:22:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:22:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:22:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:22:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:22:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:22:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:22:22,332 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 11:22:22,432 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:22:22,434 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:22:22,797 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:22:22,798 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:22:23,122 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:22:23,122 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-07 11:22:23,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:22:23 BoogieIcfgContainer [2024-11-07 11:22:23,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:22:23,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:22:23,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:22:23,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:22:23,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:22:22" (1/3) ... [2024-11-07 11:22:23,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbb1d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:22:23, skipping insertion in model container [2024-11-07 11:22:23,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:22" (2/3) ... [2024-11-07 11:22:23,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbb1d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:22:23, skipping insertion in model container [2024-11-07 11:22:23,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:22:23" (3/3) ... [2024-11-07 11:22:23,130 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2024-11-07 11:22:23,141 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:22:23,141 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:22:23,141 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:22:23,199 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 11:22:23,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 83 flow [2024-11-07 11:22:23,255 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-11-07 11:22:23,259 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:22:23,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 6/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-11-07 11:22:23,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 83 flow [2024-11-07 11:22:23,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 72 flow [2024-11-07 11:22:23,270 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:22:23,282 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;@4bc8ffe0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:22:23,282 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 11:22:23,295 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:22:23,295 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-07 11:22:23,296 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:22:23,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:23,297 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:23,297 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:23,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash 931474529, now seen corresponding path program 1 times [2024-11-07 11:22:23,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:23,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997336291] [2024-11-07 11:22:23,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:23,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:22:23,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:23,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997336291] [2024-11-07 11:22:23,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997336291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:23,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:23,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:22:23,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35322568] [2024-11-07 11:22:23,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:23,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:22:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:23,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:22:23,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:22:23,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:23,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:23,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:23,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:23,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:23,885 INFO L124 PetriNetUnfolderBase]: 202/302 cut-off events. [2024-11-07 11:22:23,885 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-07 11:22:23,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 302 events. 202/302 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 694 event pairs, 124 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 534. Up to 299 conditions per place. [2024-11-07 11:22:23,891 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2024-11-07 11:22:23,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 136 flow [2024-11-07 11:22:23,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:22:23,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:22:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-07 11:22:23,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-11-07 11:22:23,903 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 72 flow. Second operand 3 states and 44 transitions. [2024-11-07 11:22:23,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 136 flow [2024-11-07 11:22:23,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 11:22:23,910 INFO L231 Difference]: Finished difference. Result has 28 places, 30 transitions, 92 flow [2024-11-07 11:22:23,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=28, PETRI_TRANSITIONS=30} [2024-11-07 11:22:23,915 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2024-11-07 11:22:23,915 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 30 transitions, 92 flow [2024-11-07 11:22:23,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:23,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:23,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:23,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:22:23,915 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:23,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:23,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1048452415, now seen corresponding path program 1 times [2024-11-07 11:22:23,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:23,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497955607] [2024-11-07 11:22:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:23,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:22:24,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497955607] [2024-11-07 11:22:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497955607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:24,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:24,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:22:24,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281811818] [2024-11-07 11:22:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:24,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:22:24,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:22:24,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:22:24,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:24,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 30 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:24,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:24,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:24,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:24,316 INFO L124 PetriNetUnfolderBase]: 341/506 cut-off events. [2024-11-07 11:22:24,317 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 11:22:24,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 506 events. 341/506 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1516 event pairs, 124 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1018. Up to 302 conditions per place. [2024-11-07 11:22:24,321 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 39 selfloop transitions, 2 changer transitions 4/46 dead transitions. [2024-11-07 11:22:24,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 46 transitions, 219 flow [2024-11-07 11:22:24,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:22:24,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:22:24,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-07 11:22:24,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2024-11-07 11:22:24,323 INFO L175 Difference]: Start difference. First operand has 28 places, 30 transitions, 92 flow. Second operand 3 states and 55 transitions. [2024-11-07 11:22:24,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 46 transitions, 219 flow [2024-11-07 11:22:24,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:22:24,325 INFO L231 Difference]: Finished difference. Result has 30 places, 31 transitions, 98 flow [2024-11-07 11:22:24,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2024-11-07 11:22:24,325 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2024-11-07 11:22:24,325 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 98 flow [2024-11-07 11:22:24,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:24,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:24,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:24,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:22:24,326 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:24,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:24,326 INFO L85 PathProgramCache]: Analyzing trace with hash 855025178, now seen corresponding path program 1 times [2024-11-07 11:22:24,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:24,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474625189] [2024-11-07 11:22:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:24,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:22:24,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:24,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474625189] [2024-11-07 11:22:24,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474625189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078423157] [2024-11-07 11:22:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:24,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:24,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:24,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:24,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 11:22:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:24,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 11:22:24,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:22:24,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:22:24,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078423157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:24,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:24,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-07 11:22:24,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143823988] [2024-11-07 11:22:24,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:24,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:22:24,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:24,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:22:24,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:22:24,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:24,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 11:22:24,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:24,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:24,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:24,779 INFO L124 PetriNetUnfolderBase]: 341/515 cut-off events. [2024-11-07 11:22:24,780 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-11-07 11:22:24,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 515 events. 341/515 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1406 event pairs, 228 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 1117. Up to 503 conditions per place. [2024-11-07 11:22:24,782 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 15 changer transitions 0/40 dead transitions. [2024-11-07 11:22:24,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 212 flow [2024-11-07 11:22:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:22:24,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:22:24,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-11-07 11:22:24,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-11-07 11:22:24,784 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 98 flow. Second operand 6 states and 71 transitions. [2024-11-07 11:22:24,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 212 flow [2024-11-07 11:22:24,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:22:24,785 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 192 flow [2024-11-07 11:22:24,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2024-11-07 11:22:24,786 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-11-07 11:22:24,786 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 192 flow [2024-11-07 11:22:24,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 11:22:24,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:24,786 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:24,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 11:22:24,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:24,991 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:24,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:24,991 INFO L85 PathProgramCache]: Analyzing trace with hash -804320266, now seen corresponding path program 2 times [2024-11-07 11:22:24,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:24,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198171980] [2024-11-07 11:22:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:24,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-07 11:22:25,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:25,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198171980] [2024-11-07 11:22:25,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198171980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:25,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204920080] [2024-11-07 11:22:25,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:22:25,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:25,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:25,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:25,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 11:22:25,309 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 11:22:25,309 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:25,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:22:25,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-07 11:22:25,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:22:25,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204920080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:25,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:22:25,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-07 11:22:25,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144127817] [2024-11-07 11:22:25,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:25,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:22:25,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:25,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:22:25,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-07 11:22:25,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:25,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:25,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:25,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:25,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:25,587 INFO L124 PetriNetUnfolderBase]: 681/1011 cut-off events. [2024-11-07 11:22:25,588 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2024-11-07 11:22:25,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2260 conditions, 1011 events. 681/1011 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3588 event pairs, 228 based on Foata normal form. 1/804 useless extension candidates. Maximal degree in co-relation 2171. Up to 539 conditions per place. [2024-11-07 11:22:25,594 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 61 selfloop transitions, 5 changer transitions 1/68 dead transitions. [2024-11-07 11:22:25,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 403 flow [2024-11-07 11:22:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:22:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:22:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-07 11:22:25,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-11-07 11:22:25,595 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 192 flow. Second operand 4 states and 69 transitions. [2024-11-07 11:22:25,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 403 flow [2024-11-07 11:22:25,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 68 transitions, 379 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-07 11:22:25,597 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 201 flow [2024-11-07 11:22:25,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2024-11-07 11:22:25,597 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-11-07 11:22:25,597 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 201 flow [2024-11-07 11:22:25,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:25,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:25,598 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:22:25,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 11:22:25,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:25,802 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:25,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:25,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1968055638, now seen corresponding path program 3 times [2024-11-07 11:22:25,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:25,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026258956] [2024-11-07 11:22:25,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:25,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-07 11:22:26,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:26,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026258956] [2024-11-07 11:22:26,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026258956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:26,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623243541] [2024-11-07 11:22:26,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:22:26,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:26,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:26,003 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:26,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 11:22:26,101 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-07 11:22:26,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:26,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:22:26,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-07 11:22:26,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:22:26,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623243541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:26,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:22:26,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-07 11:22:26,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75544266] [2024-11-07 11:22:26,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:26,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:22:26,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:26,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:22:26,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-07 11:22:26,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:26,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:26,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:26,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:26,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:26,368 INFO L124 PetriNetUnfolderBase]: 979/1443 cut-off events. [2024-11-07 11:22:26,368 INFO L125 PetriNetUnfolderBase]: For 693/693 co-relation queries the response was YES. [2024-11-07 11:22:26,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3776 conditions, 1443 events. 979/1443 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5421 event pairs, 380 based on Foata normal form. 1/1442 useless extension candidates. Maximal degree in co-relation 3696. Up to 862 conditions per place. [2024-11-07 11:22:26,373 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 61 selfloop transitions, 7 changer transitions 1/70 dead transitions. [2024-11-07 11:22:26,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 425 flow [2024-11-07 11:22:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:22:26,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:22:26,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-11-07 11:22:26,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-11-07 11:22:26,374 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 201 flow. Second operand 4 states and 67 transitions. [2024-11-07 11:22:26,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 425 flow [2024-11-07 11:22:26,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 70 transitions, 425 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:22:26,377 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 250 flow [2024-11-07 11:22:26,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2024-11-07 11:22:26,377 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-11-07 11:22:26,377 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 250 flow [2024-11-07 11:22:26,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:26,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:26,378 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 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 11:22:26,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 11:22:26,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:26,578 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:26,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash 76006112, now seen corresponding path program 1 times [2024-11-07 11:22:26,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:26,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568094667] [2024-11-07 11:22:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:26,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 11:22:26,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:26,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568094667] [2024-11-07 11:22:26,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568094667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:26,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613083426] [2024-11-07 11:22:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:26,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:26,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:26,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:26,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 11:22:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:26,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:22:26,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 11:22:26,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 11:22:26,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613083426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:22:26,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:22:26,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-11-07 11:22:26,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994878719] [2024-11-07 11:22:26,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:22:26,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 11:22:26,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:26,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 11:22:26,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-11-07 11:22:26,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:26,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 250 flow. Second operand has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:26,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:26,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:26,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:27,255 INFO L124 PetriNetUnfolderBase]: 979/1446 cut-off events. [2024-11-07 11:22:27,255 INFO L125 PetriNetUnfolderBase]: For 1506/1506 co-relation queries the response was YES. [2024-11-07 11:22:27,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 1446 events. 979/1446 cut-off events. For 1506/1506 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5403 event pairs, 672 based on Foata normal form. 1/1445 useless extension candidates. Maximal degree in co-relation 4195. Up to 1429 conditions per place. [2024-11-07 11:22:27,262 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 18 changer transitions 0/51 dead transitions. [2024-11-07 11:22:27,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 368 flow [2024-11-07 11:22:27,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:22:27,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:22:27,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-11-07 11:22:27,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2024-11-07 11:22:27,263 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 250 flow. Second operand 7 states and 72 transitions. [2024-11-07 11:22:27,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 368 flow [2024-11-07 11:22:27,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 366 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-07 11:22:27,267 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 316 flow [2024-11-07 11:22:27,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-07 11:22:27,268 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-11-07 11:22:27,268 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 316 flow [2024-11-07 11:22:27,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:27,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:27,269 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:27,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 11:22:27,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-07 11:22:27,474 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:27,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:27,474 INFO L85 PathProgramCache]: Analyzing trace with hash -292710812, now seen corresponding path program 2 times [2024-11-07 11:22:27,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:27,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129789324] [2024-11-07 11:22:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:27,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:27,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:27,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129789324] [2024-11-07 11:22:27,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129789324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:27,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420849232] [2024-11-07 11:22:27,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:22:27,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:27,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:27,730 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:27,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 11:22:27,847 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:22:27,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:22:27,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 11:22:27,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:27,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420849232] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:27,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:22:27,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2024-11-07 11:22:27,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612038684] [2024-11-07 11:22:27,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:27,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:27,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:27,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:27,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 11:22:27,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:27,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:27,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:27,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:27,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:28,206 INFO L124 PetriNetUnfolderBase]: 1039/1532 cut-off events. [2024-11-07 11:22:28,206 INFO L125 PetriNetUnfolderBase]: For 1329/1329 co-relation queries the response was YES. [2024-11-07 11:22:28,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 1532 events. 1039/1532 cut-off events. For 1329/1329 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6085 event pairs, 108 based on Foata normal form. 26/1558 useless extension candidates. Maximal degree in co-relation 4449. Up to 645 conditions per place. [2024-11-07 11:22:28,214 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 77 selfloop transitions, 9 changer transitions 0/87 dead transitions. [2024-11-07 11:22:28,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 617 flow [2024-11-07 11:22:28,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:28,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:28,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-11-07 11:22:28,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5225806451612903 [2024-11-07 11:22:28,216 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 316 flow. Second operand 5 states and 81 transitions. [2024-11-07 11:22:28,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 617 flow [2024-11-07 11:22:28,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 581 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-07 11:22:28,220 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 327 flow [2024-11-07 11:22:28,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-07 11:22:28,220 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-11-07 11:22:28,220 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 327 flow [2024-11-07 11:22:28,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:28,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:28,221 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:28,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 11:22:28,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:28,421 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:28,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:28,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1818608736, now seen corresponding path program 1 times [2024-11-07 11:22:28,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:28,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313368866] [2024-11-07 11:22:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:28,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:28,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313368866] [2024-11-07 11:22:28,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313368866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:28,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496430985] [2024-11-07 11:22:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:28,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:28,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:28,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:28,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 11:22:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:28,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 11:22:28,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-07 11:22:28,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:29,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496430985] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:29,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:22:29,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 8] total 14 [2024-11-07 11:22:29,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171726627] [2024-11-07 11:22:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:29,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:22:29,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:29,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:22:29,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-07 11:22:29,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:29,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 327 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 11:22:29,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:29,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:29,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:29,345 INFO L124 PetriNetUnfolderBase]: 1595/2380 cut-off events. [2024-11-07 11:22:29,345 INFO L125 PetriNetUnfolderBase]: For 4132/4132 co-relation queries the response was YES. [2024-11-07 11:22:29,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7781 conditions, 2380 events. 1595/2380 cut-off events. For 4132/4132 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10779 event pairs, 318 based on Foata normal form. 1/2381 useless extension candidates. Maximal degree in co-relation 7679. Up to 1194 conditions per place. [2024-11-07 11:22:29,355 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 25 changer transitions 3/121 dead transitions. [2024-11-07 11:22:29,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 121 transitions, 932 flow [2024-11-07 11:22:29,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:22:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:22:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-11-07 11:22:29,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-11-07 11:22:29,357 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 327 flow. Second operand 6 states and 103 transitions. [2024-11-07 11:22:29,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 121 transitions, 932 flow [2024-11-07 11:22:29,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 121 transitions, 892 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-07 11:22:29,366 INFO L231 Difference]: Finished difference. Result has 63 places, 75 transitions, 555 flow [2024-11-07 11:22:29,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=555, PETRI_PLACES=63, PETRI_TRANSITIONS=75} [2024-11-07 11:22:29,367 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-11-07 11:22:29,367 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 75 transitions, 555 flow [2024-11-07 11:22:29,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 11:22:29,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:29,367 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:29,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 11:22:29,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-07 11:22:29,569 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:29,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash 392700814, now seen corresponding path program 2 times [2024-11-07 11:22:29,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:29,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075566163] [2024-11-07 11:22:29,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:29,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-07 11:22:29,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:29,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075566163] [2024-11-07 11:22:29,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075566163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:29,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:29,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:29,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154345522] [2024-11-07 11:22:29,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:29,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:29,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:29,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:29,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:29,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:29,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 75 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:29,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:29,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:29,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:30,151 INFO L124 PetriNetUnfolderBase]: 1595/2374 cut-off events. [2024-11-07 11:22:30,151 INFO L125 PetriNetUnfolderBase]: For 6350/6350 co-relation queries the response was YES. [2024-11-07 11:22:30,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9368 conditions, 2374 events. 1595/2374 cut-off events. For 6350/6350 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10425 event pairs, 340 based on Foata normal form. 40/2414 useless extension candidates. Maximal degree in co-relation 9260. Up to 994 conditions per place. [2024-11-07 11:22:30,162 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 79 selfloop transitions, 20 changer transitions 4/104 dead transitions. [2024-11-07 11:22:30,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 104 transitions, 908 flow [2024-11-07 11:22:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-07 11:22:30,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2024-11-07 11:22:30,163 INFO L175 Difference]: Start difference. First operand has 63 places, 75 transitions, 555 flow. Second operand 5 states and 77 transitions. [2024-11-07 11:22:30,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 104 transitions, 908 flow [2024-11-07 11:22:30,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 104 transitions, 870 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-07 11:22:30,173 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 593 flow [2024-11-07 11:22:30,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=593, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2024-11-07 11:22:30,173 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-11-07 11:22:30,174 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 593 flow [2024-11-07 11:22:30,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:30,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:30,174 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:30,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 11:22:30,174 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:30,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:30,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1335172478, now seen corresponding path program 3 times [2024-11-07 11:22:30,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:30,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817658980] [2024-11-07 11:22:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:30,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-07 11:22:30,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:30,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817658980] [2024-11-07 11:22:30,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817658980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:30,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:30,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:30,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929830580] [2024-11-07 11:22:30,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:30,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:30,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:30,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:30,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:30,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:30,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 593 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:30,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:30,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:30,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:30,664 INFO L124 PetriNetUnfolderBase]: 1206/1790 cut-off events. [2024-11-07 11:22:30,664 INFO L125 PetriNetUnfolderBase]: For 6572/6572 co-relation queries the response was YES. [2024-11-07 11:22:30,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7361 conditions, 1790 events. 1206/1790 cut-off events. For 6572/6572 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7508 event pairs, 269 based on Foata normal form. 16/1806 useless extension candidates. Maximal degree in co-relation 7250. Up to 963 conditions per place. [2024-11-07 11:22:30,672 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 99 selfloop transitions, 10 changer transitions 16/126 dead transitions. [2024-11-07 11:22:30,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 126 transitions, 1152 flow [2024-11-07 11:22:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-11-07 11:22:30,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-11-07 11:22:30,673 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 593 flow. Second operand 5 states and 80 transitions. [2024-11-07 11:22:30,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 126 transitions, 1152 flow [2024-11-07 11:22:30,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 126 transitions, 1102 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-07 11:22:30,682 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 600 flow [2024-11-07 11:22:30,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=600, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-11-07 11:22:30,683 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-11-07 11:22:30,683 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 600 flow [2024-11-07 11:22:30,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:30,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:30,683 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:30,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 11:22:30,683 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 1 more)] === [2024-11-07 11:22:30,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:30,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1831051926, now seen corresponding path program 4 times [2024-11-07 11:22:30,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:30,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160055611] [2024-11-07 11:22:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:30,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:30,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:30,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160055611] [2024-11-07 11:22:30,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160055611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:30,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:30,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:30,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963889094] [2024-11-07 11:22:30,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:30,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:30,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:30,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:30,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:30,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 600 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:30,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:30,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:30,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:31,247 INFO L124 PetriNetUnfolderBase]: 1280/1896 cut-off events. [2024-11-07 11:22:31,247 INFO L125 PetriNetUnfolderBase]: For 6809/6809 co-relation queries the response was YES. [2024-11-07 11:22:31,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8153 conditions, 1896 events. 1280/1896 cut-off events. For 6809/6809 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7801 event pairs, 346 based on Foata normal form. 28/1920 useless extension candidates. Maximal degree in co-relation 8039. Up to 991 conditions per place. [2024-11-07 11:22:31,258 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 103 selfloop transitions, 14 changer transitions 1/119 dead transitions. [2024-11-07 11:22:31,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 119 transitions, 1060 flow [2024-11-07 11:22:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:31,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-11-07 11:22:31,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5419354838709678 [2024-11-07 11:22:31,260 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 600 flow. Second operand 5 states and 84 transitions. [2024-11-07 11:22:31,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 119 transitions, 1060 flow [2024-11-07 11:22:31,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 119 transitions, 1003 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-11-07 11:22:31,273 INFO L231 Difference]: Finished difference. Result has 73 places, 75 transitions, 612 flow [2024-11-07 11:22:31,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=612, PETRI_PLACES=73, PETRI_TRANSITIONS=75} [2024-11-07 11:22:31,274 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-11-07 11:22:31,274 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 75 transitions, 612 flow [2024-11-07 11:22:31,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:31,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:31,274 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:31,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 11:22:31,275 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 1 more)] === [2024-11-07 11:22:31,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1416161536, now seen corresponding path program 3 times [2024-11-07 11:22:31,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:31,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034040536] [2024-11-07 11:22:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:31,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:31,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:31,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034040536] [2024-11-07 11:22:31,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034040536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:31,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:31,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:31,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140652728] [2024-11-07 11:22:31,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:31,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:31,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:31,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:31,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:31,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:31,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 612 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:31,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:31,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:31,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:31,870 INFO L124 PetriNetUnfolderBase]: 1390/2072 cut-off events. [2024-11-07 11:22:31,871 INFO L125 PetriNetUnfolderBase]: For 6689/6689 co-relation queries the response was YES. [2024-11-07 11:22:31,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8584 conditions, 2072 events. 1390/2072 cut-off events. For 6689/6689 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 8833 event pairs, 370 based on Foata normal form. 30/1936 useless extension candidates. Maximal degree in co-relation 8471. Up to 993 conditions per place. [2024-11-07 11:22:31,889 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 103 selfloop transitions, 16 changer transitions 1/121 dead transitions. [2024-11-07 11:22:31,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 1068 flow [2024-11-07 11:22:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:31,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-11-07 11:22:31,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5419354838709678 [2024-11-07 11:22:31,890 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 612 flow. Second operand 5 states and 84 transitions. [2024-11-07 11:22:31,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 1068 flow [2024-11-07 11:22:31,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 121 transitions, 1038 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-07 11:22:31,904 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 651 flow [2024-11-07 11:22:31,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=651, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-11-07 11:22:31,905 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-11-07 11:22:31,905 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 651 flow [2024-11-07 11:22:31,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:31,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:31,906 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:31,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 11:22:31,906 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 1 more)] === [2024-11-07 11:22:31,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:31,907 INFO L85 PathProgramCache]: Analyzing trace with hash 857660792, now seen corresponding path program 4 times [2024-11-07 11:22:31,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:31,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759899135] [2024-11-07 11:22:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:31,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:32,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:32,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759899135] [2024-11-07 11:22:32,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759899135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:32,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:32,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:32,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578085472] [2024-11-07 11:22:32,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:32,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:32,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:32,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:32,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:32,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:32,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 651 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:32,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:32,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:32,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:32,442 INFO L124 PetriNetUnfolderBase]: 1336/1982 cut-off events. [2024-11-07 11:22:32,442 INFO L125 PetriNetUnfolderBase]: For 7244/7244 co-relation queries the response was YES. [2024-11-07 11:22:32,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8585 conditions, 1982 events. 1336/1982 cut-off events. For 7244/7244 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8359 event pairs, 344 based on Foata normal form. 14/1838 useless extension candidates. Maximal degree in co-relation 8471. Up to 993 conditions per place. [2024-11-07 11:22:32,454 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 100 selfloop transitions, 16 changer transitions 12/129 dead transitions. [2024-11-07 11:22:32,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 129 transitions, 1136 flow [2024-11-07 11:22:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:22:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:22:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-11-07 11:22:32,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-07 11:22:32,456 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 651 flow. Second operand 6 states and 93 transitions. [2024-11-07 11:22:32,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 129 transitions, 1136 flow [2024-11-07 11:22:32,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 129 transitions, 1095 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-07 11:22:32,470 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 649 flow [2024-11-07 11:22:32,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=649, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-07 11:22:32,471 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-11-07 11:22:32,471 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 649 flow [2024-11-07 11:22:32,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:32,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:32,471 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:32,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 11:22:32,472 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:32,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:32,472 INFO L85 PathProgramCache]: Analyzing trace with hash -800982924, now seen corresponding path program 5 times [2024-11-07 11:22:32,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:32,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987219374] [2024-11-07 11:22:32,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:32,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:32,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:32,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987219374] [2024-11-07 11:22:32,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987219374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:32,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:32,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:32,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335386092] [2024-11-07 11:22:32,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:32,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:32,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:32,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:32,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:32,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 649 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:32,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:32,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:32,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:32,960 INFO L124 PetriNetUnfolderBase]: 1220/1796 cut-off events. [2024-11-07 11:22:32,960 INFO L125 PetriNetUnfolderBase]: For 7064/7064 co-relation queries the response was YES. [2024-11-07 11:22:32,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7976 conditions, 1796 events. 1220/1796 cut-off events. For 7064/7064 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7293 event pairs, 353 based on Foata normal form. 16/1670 useless extension candidates. Maximal degree in co-relation 7861. Up to 1077 conditions per place. [2024-11-07 11:22:32,970 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 96 selfloop transitions, 12 changer transitions 10/119 dead transitions. [2024-11-07 11:22:32,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 119 transitions, 1081 flow [2024-11-07 11:22:32,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:32,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-07 11:22:32,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2024-11-07 11:22:32,971 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 649 flow. Second operand 5 states and 77 transitions. [2024-11-07 11:22:32,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 119 transitions, 1081 flow [2024-11-07 11:22:32,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 119 transitions, 1039 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-07 11:22:32,983 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 643 flow [2024-11-07 11:22:32,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=643, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-11-07 11:22:32,983 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-11-07 11:22:32,983 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 643 flow [2024-11-07 11:22:32,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:32,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:32,984 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:32,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 11:22:32,984 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:32,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash -180442164, now seen corresponding path program 6 times [2024-11-07 11:22:32,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:32,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050398257] [2024-11-07 11:22:32,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:32,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:33,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:33,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050398257] [2024-11-07 11:22:33,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050398257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:33,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:33,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:33,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306517846] [2024-11-07 11:22:33,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:33,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:33,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:33,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:33,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:33,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:33,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 643 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:33,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:33,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:33,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:33,478 INFO L124 PetriNetUnfolderBase]: 1168/1728 cut-off events. [2024-11-07 11:22:33,478 INFO L125 PetriNetUnfolderBase]: For 7298/7298 co-relation queries the response was YES. [2024-11-07 11:22:33,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 1728 events. 1168/1728 cut-off events. For 7298/7298 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6877 event pairs, 328 based on Foata normal form. 32/1622 useless extension candidates. Maximal degree in co-relation 7586. Up to 910 conditions per place. [2024-11-07 11:22:33,486 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 99 selfloop transitions, 20 changer transitions 13/133 dead transitions. [2024-11-07 11:22:33,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 133 transitions, 1172 flow [2024-11-07 11:22:33,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:22:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:22:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-11-07 11:22:33,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4792626728110599 [2024-11-07 11:22:33,487 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 643 flow. Second operand 7 states and 104 transitions. [2024-11-07 11:22:33,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 133 transitions, 1172 flow [2024-11-07 11:22:33,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 133 transitions, 1129 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-07 11:22:33,500 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 668 flow [2024-11-07 11:22:33,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=668, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2024-11-07 11:22:33,501 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-11-07 11:22:33,501 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 668 flow [2024-11-07 11:22:33,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:33,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:33,501 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:33,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 11:22:33,502 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:33,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2076939690, now seen corresponding path program 5 times [2024-11-07 11:22:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:33,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112428630] [2024-11-07 11:22:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:33,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:33,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:33,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112428630] [2024-11-07 11:22:33,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112428630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:33,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:33,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:33,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629728814] [2024-11-07 11:22:33,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:33,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:33,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:33,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:33,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:33,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:33,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 668 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:33,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:33,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:33,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:33,953 INFO L124 PetriNetUnfolderBase]: 1089/1611 cut-off events. [2024-11-07 11:22:33,953 INFO L125 PetriNetUnfolderBase]: For 7321/7321 co-relation queries the response was YES. [2024-11-07 11:22:33,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7219 conditions, 1611 events. 1089/1611 cut-off events. For 7321/7321 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6363 event pairs, 319 based on Foata normal form. 14/1495 useless extension candidates. Maximal degree in co-relation 7102. Up to 1037 conditions per place. [2024-11-07 11:22:33,962 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 83 selfloop transitions, 17 changer transitions 9/110 dead transitions. [2024-11-07 11:22:33,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 110 transitions, 1031 flow [2024-11-07 11:22:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:33,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-11-07 11:22:33,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2024-11-07 11:22:33,963 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 668 flow. Second operand 5 states and 74 transitions. [2024-11-07 11:22:33,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 110 transitions, 1031 flow [2024-11-07 11:22:33,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 110 transitions, 971 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-07 11:22:33,974 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 680 flow [2024-11-07 11:22:33,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=680, PETRI_PLACES=82, PETRI_TRANSITIONS=79} [2024-11-07 11:22:33,974 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-11-07 11:22:33,974 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 680 flow [2024-11-07 11:22:33,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:33,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:33,974 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:33,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 11:22:33,975 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:33,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:33,975 INFO L85 PathProgramCache]: Analyzing trace with hash 467777006, now seen corresponding path program 6 times [2024-11-07 11:22:33,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:33,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801915834] [2024-11-07 11:22:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:34,152 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:34,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:34,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801915834] [2024-11-07 11:22:34,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801915834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:34,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:34,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:34,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988143075] [2024-11-07 11:22:34,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:34,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:34,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:34,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:34,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:34,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:34,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 680 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:34,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:34,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:34,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:34,391 INFO L124 PetriNetUnfolderBase]: 1039/1547 cut-off events. [2024-11-07 11:22:34,392 INFO L125 PetriNetUnfolderBase]: For 7219/7219 co-relation queries the response was YES. [2024-11-07 11:22:34,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7023 conditions, 1547 events. 1039/1547 cut-off events. For 7219/7219 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6039 event pairs, 309 based on Foata normal form. 30/1451 useless extension candidates. Maximal degree in co-relation 6905. Up to 1037 conditions per place. [2024-11-07 11:22:34,399 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 89 selfloop transitions, 20 changer transitions 1/111 dead transitions. [2024-11-07 11:22:34,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 111 transitions, 1059 flow [2024-11-07 11:22:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:34,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-07 11:22:34,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2024-11-07 11:22:34,400 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 680 flow. Second operand 5 states and 77 transitions. [2024-11-07 11:22:34,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 111 transitions, 1059 flow [2024-11-07 11:22:34,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 111 transitions, 1021 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-07 11:22:34,411 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 725 flow [2024-11-07 11:22:34,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=725, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2024-11-07 11:22:34,412 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-11-07 11:22:34,412 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 725 flow [2024-11-07 11:22:34,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:34,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:34,412 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:34,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 11:22:34,412 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:34,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1854800072, now seen corresponding path program 7 times [2024-11-07 11:22:34,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:34,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803317460] [2024-11-07 11:22:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:34,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:34,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:34,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803317460] [2024-11-07 11:22:34,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803317460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:34,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:34,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:34,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72172398] [2024-11-07 11:22:34,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:34,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:34,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:34,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:34,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:34,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:34,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 725 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:34,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:34,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:34,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:34,836 INFO L124 PetriNetUnfolderBase]: 983/1453 cut-off events. [2024-11-07 11:22:34,836 INFO L125 PetriNetUnfolderBase]: For 6385/6385 co-relation queries the response was YES. [2024-11-07 11:22:34,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6422 conditions, 1453 events. 983/1453 cut-off events. For 6385/6385 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5513 event pairs, 273 based on Foata normal form. 28/1363 useless extension candidates. Maximal degree in co-relation 6304. Up to 863 conditions per place. [2024-11-07 11:22:34,842 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 86 selfloop transitions, 21 changer transitions 1/109 dead transitions. [2024-11-07 11:22:34,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 109 transitions, 1054 flow [2024-11-07 11:22:34,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:34,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-07 11:22:34,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49032258064516127 [2024-11-07 11:22:34,843 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 725 flow. Second operand 5 states and 76 transitions. [2024-11-07 11:22:34,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 109 transitions, 1054 flow [2024-11-07 11:22:34,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 109 transitions, 987 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-07 11:22:34,852 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 693 flow [2024-11-07 11:22:34,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=693, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2024-11-07 11:22:34,853 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-11-07 11:22:34,853 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 693 flow [2024-11-07 11:22:34,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:34,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:34,853 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:34,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 11:22:34,854 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:34,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:34,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1203199010, now seen corresponding path program 7 times [2024-11-07 11:22:34,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:34,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089805977] [2024-11-07 11:22:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:34,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-07 11:22:35,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:35,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089805977] [2024-11-07 11:22:35,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089805977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:22:35,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:22:35,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:22:35,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630363787] [2024-11-07 11:22:35,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:22:35,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:22:35,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:22:35,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:22:35,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:22:35,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:22:35,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 693 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:35,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:22:35,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:22:35,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:22:35,249 INFO L124 PetriNetUnfolderBase]: 929/1363 cut-off events. [2024-11-07 11:22:35,249 INFO L125 PetriNetUnfolderBase]: For 5246/5246 co-relation queries the response was YES. [2024-11-07 11:22:35,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5892 conditions, 1363 events. 929/1363 cut-off events. For 5246/5246 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5042 event pairs, 269 based on Foata normal form. 14/1267 useless extension candidates. Maximal degree in co-relation 5775. Up to 945 conditions per place. [2024-11-07 11:22:35,254 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 78 selfloop transitions, 19 changer transitions 10/108 dead transitions. [2024-11-07 11:22:35,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 108 transitions, 1025 flow [2024-11-07 11:22:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:22:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:22:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-11-07 11:22:35,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47096774193548385 [2024-11-07 11:22:35,255 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 693 flow. Second operand 5 states and 73 transitions. [2024-11-07 11:22:35,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 108 transitions, 1025 flow [2024-11-07 11:22:35,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 108 transitions, 983 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:22:35,263 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 677 flow [2024-11-07 11:22:35,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=677, PETRI_PLACES=82, PETRI_TRANSITIONS=79} [2024-11-07 11:22:35,264 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-11-07 11:22:35,264 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 677 flow [2024-11-07 11:22:35,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:22:35,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:22:35,264 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:22:35,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 11:22:35,264 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:22:35,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:22:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash -991865572, now seen corresponding path program 1 times [2024-11-07 11:22:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:22:35,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387442147] [2024-11-07 11:22:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:35,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:22:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-07 11:22:35,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:22:35,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387442147] [2024-11-07 11:22:35,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387442147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:22:35,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174912315] [2024-11-07 11:22:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:22:35,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:22:35,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:22:35,444 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:22:35,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 11:22:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:22:35,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 11:22:35,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:22:35,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:22:35,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-11-07 11:22:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-07 11:22:35,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:22:53,680 INFO L349 Elim1Store]: treesize reduction 28, result has 94.9 percent of original size [2024-11-07 11:22:53,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 210 treesize of output 583