./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/weaver/popl20-more-dec-subseq.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', '0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-dec-subseq.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 0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:29:11,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:29:11,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:29:11,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:29:11,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:29:11,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:29:11,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:29:11,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:29:11,262 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:29:11,262 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:29:11,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:29:11,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:29:11,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:29:11,263 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:29:11,263 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:29:11,263 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:29:11,263 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:29:11,263 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:29:11,263 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:29:11,263 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:29:11,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:29:11,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:29:11,263 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:29:11,263 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:29:11,264 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:29:11,264 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:29:11,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:29:11,264 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:29:11,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:29:11,264 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:29:11,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:29:11,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:29:11,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:29:11,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:29:11,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:29:11,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:29:11,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:29:11,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:29:11,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:29:11,267 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:29:11,268 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:29:11,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:29:11,268 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 -> 0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b [2024-11-07 11:29:11,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:29:11,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:29:11,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:29:11,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:29:11,574 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:29:11,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2024-11-07 11:29:12,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:29:13,118 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:29:13,119 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2024-11-07 11:29:13,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c6c4b02c9/26c4cf0cf99f457ba421970a9af60a1f/FLAG72f8dae04 [2024-11-07 11:29:13,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c6c4b02c9/26c4cf0cf99f457ba421970a9af60a1f [2024-11-07 11:29:13,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:29:13,157 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:29:13,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:29:13,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:29:13,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:29:13,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0db5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13, skipping insertion in model container [2024-11-07 11:29:13,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,182 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:29:13,350 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2950,2963] [2024-11-07 11:29:13,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:29:13,372 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:29:13,403 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2950,2963] [2024-11-07 11:29:13,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:29:13,424 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:29:13,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13 WrapperNode [2024-11-07 11:29:13,426 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:29:13,427 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:29:13,427 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:29:13,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:29:13,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,474 INFO L138 Inliner]: procedures = 23, calls = 35, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 187 [2024-11-07 11:29:13,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:29:13,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:29:13,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:29:13,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:29:13,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,511 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-07 11:29:13,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,538 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:29:13,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:29:13,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:29:13,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:29:13,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (1/1) ... [2024-11-07 11:29:13,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:29:13,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:29:13,579 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 11:29:13,581 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 11:29:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:29:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:29:13,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:29:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:29:13,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:29:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:29:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:29:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:29:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:29:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 11:29:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 11:29:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:29:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:29:13,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:29:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:29:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:29:13,608 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 11:29:13,699 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:29:13,701 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:29:14,019 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:29:14,019 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:29:14,326 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:29:14,326 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 11:29:14,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:29:14 BoogieIcfgContainer [2024-11-07 11:29:14,327 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:29:14,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:29:14,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:29:14,334 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:29:14,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:29:13" (1/3) ... [2024-11-07 11:29:14,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51954e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:29:14, skipping insertion in model container [2024-11-07 11:29:14,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:29:13" (2/3) ... [2024-11-07 11:29:14,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51954e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:29:14, skipping insertion in model container [2024-11-07 11:29:14,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:29:14" (3/3) ... [2024-11-07 11:29:14,337 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2024-11-07 11:29:14,348 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:29:14,348 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:29:14,349 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:29:14,393 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:29:14,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 31 transitions, 76 flow [2024-11-07 11:29:14,461 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2024-11-07 11:29:14,463 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:29:14,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 5/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-07 11:29:14,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 31 transitions, 76 flow [2024-11-07 11:29:14,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 28 transitions, 68 flow [2024-11-07 11:29:14,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:29:14,511 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;@1fb679e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:29:14,513 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:29:14,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:29:14,524 INFO L124 PetriNetUnfolderBase]: 5/27 cut-off events. [2024-11-07 11:29:14,524 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:29:14,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:29:14,525 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:29:14,526 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:29:14,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:29:14,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1103126271, now seen corresponding path program 1 times [2024-11-07 11:29:14,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:29:14,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214600234] [2024-11-07 11:29:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:29:14,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:29:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:29:14,935 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 11:29:14,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:29:14,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214600234] [2024-11-07 11:29:14,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214600234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:29:14,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:29:14,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:29:14,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394692690] [2024-11-07 11:29:14,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:29:14,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:29:14,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:29:14,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:29:14,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:29:14,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-07 11:29:14,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 11:29:14,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:29:14,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-07 11:29:14,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:29:15,144 INFO L124 PetriNetUnfolderBase]: 202/345 cut-off events. [2024-11-07 11:29:15,144 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-07 11:29:15,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 345 events. 202/345 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1377 event pairs, 51 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 651. Up to 188 conditions per place. [2024-11-07 11:29:15,150 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 31 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-11-07 11:29:15,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 163 flow [2024-11-07 11:29:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:29:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:29:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-11-07 11:29:15,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-11-07 11:29:15,167 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 68 flow. Second operand 4 states and 67 transitions. [2024-11-07 11:29:15,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 163 flow [2024-11-07 11:29:15,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 153 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:29:15,177 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 74 flow [2024-11-07 11:29:15,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2024-11-07 11:29:15,182 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2024-11-07 11:29:15,184 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 74 flow [2024-11-07 11:29:15,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 11:29:15,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:29:15,184 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:29:15,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:29:15,186 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:29:15,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:29:15,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1933867166, now seen corresponding path program 1 times [2024-11-07 11:29:15,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:29:15,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470526637] [2024-11-07 11:29:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:29:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:29:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:29:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:29:15,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:29:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470526637] [2024-11-07 11:29:15,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470526637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:29:15,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:29:15,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:29:15,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092940851] [2024-11-07 11:29:15,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:29:15,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:29:15,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:29:15,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:29:15,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:29:15,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-07 11:29:15,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 11:29:15,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:29:15,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-07 11:29:15,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:29:15,510 INFO L124 PetriNetUnfolderBase]: 202/370 cut-off events. [2024-11-07 11:29:15,511 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-07 11:29:15,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 370 events. 202/370 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1558 event pairs, 126 based on Foata normal form. 1/335 useless extension candidates. Maximal degree in co-relation 285. Up to 320 conditions per place. [2024-11-07 11:29:15,515 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 22 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-11-07 11:29:15,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 124 flow [2024-11-07 11:29:15,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:29:15,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:29:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-11-07 11:29:15,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-11-07 11:29:15,517 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 74 flow. Second operand 3 states and 48 transitions. [2024-11-07 11:29:15,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 124 flow [2024-11-07 11:29:15,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 11:29:15,519 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 82 flow [2024-11-07 11:29:15,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2024-11-07 11:29:15,520 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-11-07 11:29:15,520 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 82 flow [2024-11-07 11:29:15,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 11:29:15,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:29:15,522 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:29:15,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:29:15,522 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:29:15,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:29:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash -720044749, now seen corresponding path program 1 times [2024-11-07 11:29:15,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:29:15,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776707620] [2024-11-07 11:29:15,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:29:15,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:29:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:29:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:29:15,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:29:15,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776707620] [2024-11-07 11:29:15,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776707620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:29:15,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:29:15,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:29:15,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214060714] [2024-11-07 11:29:15,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:29:15,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:29:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:29:15,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:29:15,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:29:15,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-07 11:29:15,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 11:29:15,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:29:15,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-07 11:29:15,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:29:15,773 INFO L124 PetriNetUnfolderBase]: 257/478 cut-off events. [2024-11-07 11:29:15,773 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-07 11:29:15,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 478 events. 257/478 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2116 event pairs, 94 based on Foata normal form. 1/437 useless extension candidates. Maximal degree in co-relation 951. Up to 216 conditions per place. [2024-11-07 11:29:15,780 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 34 selfloop transitions, 2 changer transitions 2/44 dead transitions. [2024-11-07 11:29:15,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 194 flow [2024-11-07 11:29:15,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:29:15,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:29:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-07 11:29:15,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-11-07 11:29:15,783 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 82 flow. Second operand 3 states and 60 transitions. [2024-11-07 11:29:15,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 194 flow [2024-11-07 11:29:15,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:29:15,785 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 90 flow [2024-11-07 11:29:15,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, 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=90, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2024-11-07 11:29:15,786 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-11-07 11:29:15,786 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 90 flow [2024-11-07 11:29:15,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 11:29:15,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:29:15,787 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 11:29:15,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:29:15,788 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:29:15,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:29:15,789 INFO L85 PathProgramCache]: Analyzing trace with hash 859726172, now seen corresponding path program 1 times [2024-11-07 11:29:15,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:29:15,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185515995] [2024-11-07 11:29:15,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:29:15,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:29:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:29:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:29:15,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:29:15,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185515995] [2024-11-07 11:29:15,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185515995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:29:15,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:29:15,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:29:15,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807239602] [2024-11-07 11:29:15,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:29:15,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:29:15,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:29:15,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:29:15,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:29:15,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-07 11:29:15,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 11:29:15,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:29:15,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-07 11:29:15,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:29:15,989 INFO L124 PetriNetUnfolderBase]: 250/472 cut-off events. [2024-11-07 11:29:15,990 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-07 11:29:15,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 472 events. 250/472 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2061 event pairs, 102 based on Foata normal form. 11/450 useless extension candidates. Maximal degree in co-relation 1022. Up to 314 conditions per place. [2024-11-07 11:29:15,993 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 32 selfloop transitions, 2 changer transitions 4/44 dead transitions. [2024-11-07 11:29:15,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 201 flow [2024-11-07 11:29:15,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:29:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:29:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-07 11:29:15,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6344086021505376 [2024-11-07 11:29:15,995 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 90 flow. Second operand 3 states and 59 transitions. [2024-11-07 11:29:15,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 201 flow [2024-11-07 11:29:15,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:29:15,996 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 100 flow [2024-11-07 11:29:15,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2024-11-07 11:29:15,997 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-11-07 11:29:15,997 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 100 flow [2024-11-07 11:29:15,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 11:29:15,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:29:15,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:29:15,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:29:15,998 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:29:15,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:29:16,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2141843345, now seen corresponding path program 1 times [2024-11-07 11:29:16,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:29:16,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146455572] [2024-11-07 11:29:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:29:16,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:29:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:29:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:29:16,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:29:16,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146455572] [2024-11-07 11:29:16,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146455572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:29:16,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:29:16,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:29:16,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391710773] [2024-11-07 11:29:16,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:29:16,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:29:16,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:29:16,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:29:16,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:29:16,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-07 11:29:16,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 11:29:16,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:29:16,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-07 11:29:16,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:29:16,343 INFO L124 PetriNetUnfolderBase]: 307/599 cut-off events. [2024-11-07 11:29:16,343 INFO L125 PetriNetUnfolderBase]: For 73/80 co-relation queries the response was YES. [2024-11-07 11:29:16,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1379 conditions, 599 events. 307/599 cut-off events. For 73/80 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2846 event pairs, 247 based on Foata normal form. 12/564 useless extension candidates. Maximal degree in co-relation 1079. Up to 433 conditions per place. [2024-11-07 11:29:16,347 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 25 selfloop transitions, 2 changer transitions 17/50 dead transitions. [2024-11-07 11:29:16,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 50 transitions, 242 flow [2024-11-07 11:29:16,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:29:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:29:16,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-11-07 11:29:16,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5725806451612904 [2024-11-07 11:29:16,352 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 100 flow. Second operand 4 states and 71 transitions. [2024-11-07 11:29:16,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 50 transitions, 242 flow [2024-11-07 11:29:16,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:29:16,354 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 112 flow [2024-11-07 11:29:16,355 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-11-07 11:29:16,356 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-11-07 11:29:16,356 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 112 flow [2024-11-07 11:29:16,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 11:29:16,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:29:16,357 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:29:16,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:29:16,357 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:29:16,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:29:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash 812735461, now seen corresponding path program 1 times [2024-11-07 11:29:16,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:29:16,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756515397] [2024-11-07 11:29:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:29:16,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:29:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:29:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:29:17,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:29:17,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756515397] [2024-11-07 11:29:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756515397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:29:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763023274] [2024-11-07 11:29:17,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:29:17,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:29:17,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:29:17,517 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 11:29:17,528 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 11:29:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:29:17,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 11:29:17,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:29:17,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 11:29:17,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 11:29:17,801 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 11:29:17,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-07 11:29:17,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 11:29:18,497 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-07 11:29:18,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2024-11-07 11:29:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:29:18,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:29:19,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:29:19,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 39 [2024-11-07 11:29:19,712 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:29:19,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 90 [2024-11-07 11:29:19,735 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:29:19,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 63 [2024-11-07 11:29:19,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:29:19,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 66 [2024-11-07 11:29:19,850 INFO L349 Elim1Store]: treesize reduction 9, result has 80.9 percent of original size [2024-11-07 11:29:19,850 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 208 treesize of output 181 [2024-11-07 11:29:19,874 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 11:29:19,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:29:19,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 136 treesize of output 120 [2024-11-07 11:29:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:29:20,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763023274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:29:20,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:29:20,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 13] total 32 [2024-11-07 11:29:20,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545559706] [2024-11-07 11:29:20,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:29:20,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-07 11:29:20,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:29:20,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-07 11:29:20,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=836, Unknown=3, NotChecked=0, Total=1056 [2024-11-07 11:29:20,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-11-07 11:29:20,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 112 flow. Second operand has 33 states, 33 states have (on average 7.151515151515151) internal successors, (236), 33 states have internal predecessors, (236), 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 11:29:20,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:29:20,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-11-07 11:29:20,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:29:24,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 11:29:28,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 11:29:32,763 INFO L124 PetriNetUnfolderBase]: 1339/2271 cut-off events. [2024-11-07 11:29:32,764 INFO L125 PetriNetUnfolderBase]: For 382/382 co-relation queries the response was YES. [2024-11-07 11:29:32,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5374 conditions, 2271 events. 1339/2271 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 10635 event pairs, 231 based on Foata normal form. 4/1987 useless extension candidates. Maximal degree in co-relation 5356. Up to 403 conditions per place. [2024-11-07 11:29:32,777 INFO L140 encePairwiseOnDemand]: 16/31 looper letters, 198 selfloop transitions, 94 changer transitions 75/370 dead transitions. [2024-11-07 11:29:32,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 370 transitions, 1802 flow [2024-11-07 11:29:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-07 11:29:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-07 11:29:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 605 transitions. [2024-11-07 11:29:32,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-11-07 11:29:32,781 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 112 flow. Second operand 50 states and 605 transitions. [2024-11-07 11:29:32,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 370 transitions, 1802 flow [2024-11-07 11:29:32,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 370 transitions, 1790 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-07 11:29:32,790 INFO L231 Difference]: Finished difference. Result has 122 places, 126 transitions, 886 flow [2024-11-07 11:29:32,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=886, PETRI_PLACES=122, PETRI_TRANSITIONS=126} [2024-11-07 11:29:32,791 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-11-07 11:29:32,791 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 126 transitions, 886 flow [2024-11-07 11:29:32,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.151515151515151) internal successors, (236), 33 states have internal predecessors, (236), 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 11:29:32,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:29:32,792 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:29:32,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 11:29:32,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:29:32,997 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:29:32,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:29:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1742349785, now seen corresponding path program 2 times [2024-11-07 11:29:32,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:29:32,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727114682] [2024-11-07 11:29:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:29:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:29:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:29:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:29:34,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:29:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727114682] [2024-11-07 11:29:34,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727114682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:29:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168353662] [2024-11-07 11:29:34,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:29:34,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:29:34,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:29:34,355 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 11:29:34,358 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 11:29:34,436 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:29:34,436 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:29:34,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-07 11:29:34,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:29:34,881 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-07 11:29:34,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2024-11-07 11:29:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:29:34,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:29:39,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:29:39,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 174 [2024-11-07 11:29:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:29:39,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168353662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:29:39,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:29:39,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 28 [2024-11-07 11:29:39,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437410083] [2024-11-07 11:29:39,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:29:39,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-07 11:29:39,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:29:39,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-07 11:29:39,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=679, Unknown=1, NotChecked=0, Total=812 [2024-11-07 11:29:43,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 11:29:47,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 11:29:51,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 11:29:51,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-11-07 11:29:51,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 886 flow. Second operand has 29 states, 29 states have (on average 7.551724137931035) internal successors, (219), 29 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:29:51,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:29:51,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-11-07 11:29:51,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:29:58,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 11:30:00,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 11:30:00,459 INFO L124 PetriNetUnfolderBase]: 2311/3880 cut-off events. [2024-11-07 11:30:00,459 INFO L125 PetriNetUnfolderBase]: For 29584/29584 co-relation queries the response was YES. [2024-11-07 11:30:00,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18865 conditions, 3880 events. 2311/3880 cut-off events. For 29584/29584 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 19980 event pairs, 265 based on Foata normal form. 3/3729 useless extension candidates. Maximal degree in co-relation 18797. Up to 904 conditions per place. [2024-11-07 11:30:00,546 INFO L140 encePairwiseOnDemand]: 16/31 looper letters, 321 selfloop transitions, 85 changer transitions 25/434 dead transitions. [2024-11-07 11:30:00,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 434 transitions, 4480 flow [2024-11-07 11:30:00,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-07 11:30:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-07 11:30:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 386 transitions. [2024-11-07 11:30:00,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4016649323621228 [2024-11-07 11:30:00,551 INFO L175 Difference]: Start difference. First operand has 122 places, 126 transitions, 886 flow. Second operand 31 states and 386 transitions. [2024-11-07 11:30:00,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 434 transitions, 4480 flow [2024-11-07 11:30:00,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 434 transitions, 3977 flow, removed 235 selfloop flow, removed 11 redundant places. [2024-11-07 11:30:00,650 INFO L231 Difference]: Finished difference. Result has 151 places, 202 transitions, 1739 flow [2024-11-07 11:30:00,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1739, PETRI_PLACES=151, PETRI_TRANSITIONS=202} [2024-11-07 11:30:00,653 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-11-07 11:30:00,653 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 202 transitions, 1739 flow [2024-11-07 11:30:00,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.551724137931035) internal successors, (219), 29 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:00,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:00,654 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:00,670 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 11:30:00,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:00,859 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:30:00,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:00,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1849147924, now seen corresponding path program 3 times [2024-11-07 11:30:00,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:00,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140909095] [2024-11-07 11:30:00,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:00,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:30:00,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:00,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140909095] [2024-11-07 11:30:00,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140909095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:30:00,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:30:00,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:30:00,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269832152] [2024-11-07 11:30:00,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:30:00,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:30:00,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:00,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:30:00,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:30:00,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-07 11:30:00,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 202 transitions, 1739 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:00,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:00,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-07 11:30:00,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:01,592 INFO L124 PetriNetUnfolderBase]: 2361/4360 cut-off events. [2024-11-07 11:30:01,593 INFO L125 PetriNetUnfolderBase]: For 50008/50074 co-relation queries the response was YES. [2024-11-07 11:30:01,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23305 conditions, 4360 events. 2361/4360 cut-off events. For 50008/50074 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 26380 event pairs, 419 based on Foata normal form. 56/4390 useless extension candidates. Maximal degree in co-relation 23231. Up to 1883 conditions per place. [2024-11-07 11:30:01,653 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 262 selfloop transitions, 62 changer transitions 0/337 dead transitions. [2024-11-07 11:30:01,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 337 transitions, 3501 flow [2024-11-07 11:30:01,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:30:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:30:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-07 11:30:01,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6935483870967742 [2024-11-07 11:30:01,655 INFO L175 Difference]: Start difference. First operand has 151 places, 202 transitions, 1739 flow. Second operand 4 states and 86 transitions. [2024-11-07 11:30:01,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 337 transitions, 3501 flow [2024-11-07 11:30:01,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 337 transitions, 3208 flow, removed 121 selfloop flow, removed 6 redundant places. [2024-11-07 11:30:01,772 INFO L231 Difference]: Finished difference. Result has 148 places, 248 transitions, 2202 flow [2024-11-07 11:30:01,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2202, PETRI_PLACES=148, PETRI_TRANSITIONS=248} [2024-11-07 11:30:01,773 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-11-07 11:30:01,773 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 248 transitions, 2202 flow [2024-11-07 11:30:01,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:01,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:01,773 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:01,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 11:30:01,774 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:30:01,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:01,774 INFO L85 PathProgramCache]: Analyzing trace with hash -833526502, now seen corresponding path program 1 times [2024-11-07 11:30:01,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:01,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324057497] [2024-11-07 11:30:01,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:01,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:30:02,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:02,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324057497] [2024-11-07 11:30:02,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324057497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:02,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466958267] [2024-11-07 11:30:02,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:02,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:02,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:02,133 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 11:30:02,138 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 11:30:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:02,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:30:02,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:30:02,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:30:02,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466958267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:02,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:02,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-07 11:30:02,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866379351] [2024-11-07 11:30:02,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:02,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:30:02,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:02,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:30:02,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:30:02,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-07 11:30:02,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 248 transitions, 2202 flow. Second operand has 15 states, 15 states have (on average 11.133333333333333) internal successors, (167), 15 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:02,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:02,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-07 11:30:02,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:03,397 INFO L124 PetriNetUnfolderBase]: 2598/4803 cut-off events. [2024-11-07 11:30:03,398 INFO L125 PetriNetUnfolderBase]: For 53781/53881 co-relation queries the response was YES. [2024-11-07 11:30:03,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25851 conditions, 4803 events. 2598/4803 cut-off events. For 53781/53881 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 29808 event pairs, 378 based on Foata normal form. 70/4838 useless extension candidates. Maximal degree in co-relation 25029. Up to 2964 conditions per place. [2024-11-07 11:30:03,498 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 291 selfloop transitions, 17 changer transitions 69/390 dead transitions. [2024-11-07 11:30:03,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 390 transitions, 4340 flow [2024-11-07 11:30:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:30:03,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:30:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-11-07 11:30:03,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48028673835125446 [2024-11-07 11:30:03,500 INFO L175 Difference]: Start difference. First operand has 148 places, 248 transitions, 2202 flow. Second operand 9 states and 134 transitions. [2024-11-07 11:30:03,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 390 transitions, 4340 flow [2024-11-07 11:30:03,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 390 transitions, 4290 flow, removed 25 selfloop flow, removed 0 redundant places. [2024-11-07 11:30:03,649 INFO L231 Difference]: Finished difference. Result has 158 places, 248 transitions, 2244 flow [2024-11-07 11:30:03,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2244, PETRI_PLACES=158, PETRI_TRANSITIONS=248} [2024-11-07 11:30:03,650 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-11-07 11:30:03,651 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 248 transitions, 2244 flow [2024-11-07 11:30:03,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.133333333333333) internal successors, (167), 15 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:03,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:03,651 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:03,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 11:30:03,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:03,856 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:30:03,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:03,856 INFO L85 PathProgramCache]: Analyzing trace with hash -932154993, now seen corresponding path program 2 times [2024-11-07 11:30:03,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:03,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343200483] [2024-11-07 11:30:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:03,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 11:30:04,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343200483] [2024-11-07 11:30:04,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343200483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:30:04,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:30:04,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:30:04,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929230290] [2024-11-07 11:30:04,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:30:04,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:30:04,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:04,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:30:04,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:30:04,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-07 11:30:04,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 248 transitions, 2244 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:04,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:04,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-07 11:30:04,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:04,630 INFO L124 PetriNetUnfolderBase]: 1561/2902 cut-off events. [2024-11-07 11:30:04,630 INFO L125 PetriNetUnfolderBase]: For 35229/35287 co-relation queries the response was YES. [2024-11-07 11:30:04,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15988 conditions, 2902 events. 1561/2902 cut-off events. For 35229/35287 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 15306 event pairs, 260 based on Foata normal form. 28/2899 useless extension candidates. Maximal degree in co-relation 15143. Up to 2408 conditions per place. [2024-11-07 11:30:04,662 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 190 selfloop transitions, 21 changer transitions 0/224 dead transitions. [2024-11-07 11:30:04,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 224 transitions, 2407 flow [2024-11-07 11:30:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:30:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:30:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-07 11:30:04,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-11-07 11:30:04,664 INFO L175 Difference]: Start difference. First operand has 158 places, 248 transitions, 2244 flow. Second operand 6 states and 87 transitions. [2024-11-07 11:30:04,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 224 transitions, 2407 flow [2024-11-07 11:30:04,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 224 transitions, 2257 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-11-07 11:30:04,736 INFO L231 Difference]: Finished difference. Result has 149 places, 209 transitions, 1812 flow [2024-11-07 11:30:04,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1812, PETRI_PLACES=149, PETRI_TRANSITIONS=209} [2024-11-07 11:30:04,738 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-11-07 11:30:04,738 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 209 transitions, 1812 flow [2024-11-07 11:30:04,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:04,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:04,738 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:04,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 11:30:04,738 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:30:04,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:04,739 INFO L85 PathProgramCache]: Analyzing trace with hash 331470873, now seen corresponding path program 4 times [2024-11-07 11:30:04,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:04,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134386383] [2024-11-07 11:30:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:04,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 11:30:05,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:05,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134386383] [2024-11-07 11:30:05,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134386383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:05,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250731357] [2024-11-07 11:30:05,023 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:30:05,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:05,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:05,026 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 11:30:05,029 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 11:30:05,136 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:30:05,136 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:30:05,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 11:30:05,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 11:30:05,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 11:30:05,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250731357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:05,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:05,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-07 11:30:05,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338572450] [2024-11-07 11:30:05,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:05,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:30:05,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:05,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:30:05,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 11:30:05,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-07 11:30:05,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 209 transitions, 1812 flow. Second operand has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:05,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:05,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-07 11:30:05,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:05,705 INFO L124 PetriNetUnfolderBase]: 864/1783 cut-off events. [2024-11-07 11:30:05,705 INFO L125 PetriNetUnfolderBase]: For 22017/22037 co-relation queries the response was YES. [2024-11-07 11:30:05,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9596 conditions, 1783 events. 864/1783 cut-off events. For 22017/22037 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9155 event pairs, 487 based on Foata normal form. 16/1784 useless extension candidates. Maximal degree in co-relation 8765. Up to 1262 conditions per place. [2024-11-07 11:30:05,715 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 69 selfloop transitions, 3 changer transitions 62/143 dead transitions. [2024-11-07 11:30:05,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 1536 flow [2024-11-07 11:30:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:30:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:30:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-11-07 11:30:05,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2024-11-07 11:30:05,717 INFO L175 Difference]: Start difference. First operand has 149 places, 209 transitions, 1812 flow. Second operand 6 states and 95 transitions. [2024-11-07 11:30:05,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 1536 flow [2024-11-07 11:30:05,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 143 transitions, 1406 flow, removed 54 selfloop flow, removed 13 redundant places. [2024-11-07 11:30:05,740 INFO L231 Difference]: Finished difference. Result has 126 places, 81 transitions, 674 flow [2024-11-07 11:30:05,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=674, PETRI_PLACES=126, PETRI_TRANSITIONS=81} [2024-11-07 11:30:05,741 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-11-07 11:30:05,741 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 81 transitions, 674 flow [2024-11-07 11:30:05,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:05,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:05,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:05,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 11:30:05,945 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,SelfDestructingSolverStorable10 [2024-11-07 11:30:05,946 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:30:05,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash -613292837, now seen corresponding path program 5 times [2024-11-07 11:30:05,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:05,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358811269] [2024-11-07 11:30:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:05,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:30:07,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:07,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358811269] [2024-11-07 11:30:07,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358811269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:07,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446331956] [2024-11-07 11:30:07,491 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:30:07,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:07,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:07,493 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 11:30:07,494 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 11:30:07,581 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-07 11:30:07,582 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:30:07,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-07 11:30:07,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:07,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 11:30:07,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 11:30:07,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 11:30:09,137 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 11:30:09,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 11:30:09,139 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 11:30:09,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 11:30:09,140 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 11:30:09,141 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 11:30:09,152 INFO L349 Elim1Store]: treesize reduction 32, result has 17.9 percent of original size [2024-11-07 11:30:09,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 22 [2024-11-07 11:30:09,223 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:09,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:11,990 INFO L349 Elim1Store]: treesize reduction 43, result has 63.9 percent of original size [2024-11-07 11:30:11,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 257 treesize of output 243 [2024-11-07 11:30:12,437 INFO L349 Elim1Store]: treesize reduction 31, result has 59.2 percent of original size [2024-11-07 11:30:12,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 194 treesize of output 167 [2024-11-07 11:30:12,673 INFO L349 Elim1Store]: treesize reduction 31, result has 59.2 percent of original size [2024-11-07 11:30:12,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 238 treesize of output 195 [2024-11-07 11:30:15,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:30:15,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 75 [2024-11-07 11:30:15,370 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-07 11:30:15,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 125 [2024-11-07 11:30:15,499 INFO L349 Elim1Store]: treesize reduction 8, result has 94.3 percent of original size [2024-11-07 11:30:15,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 84 treesize of output 179 [2024-11-07 11:30:16,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:30:16,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 75 [2024-11-07 11:30:16,317 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-07 11:30:16,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 125 [2024-11-07 11:30:16,450 INFO L349 Elim1Store]: treesize reduction 8, result has 94.4 percent of original size [2024-11-07 11:30:16,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 84 treesize of output 180 [2024-11-07 11:30:18,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:30:18,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 69 [2024-11-07 11:30:18,356 INFO L349 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2024-11-07 11:30:18,357 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 118 treesize of output 100 [2024-11-07 11:30:18,365 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 11:30:18,462 INFO L349 Elim1Store]: treesize reduction 24, result has 85.1 percent of original size [2024-11-07 11:30:18,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 111 treesize of output 195 [2024-11-07 11:30:18,619 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-07 11:30:18,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 1 [2024-11-07 11:30:18,631 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:30:18,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 53 [2024-11-07 11:30:18,640 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-07 11:30:18,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 69 [2024-11-07 11:30:18,679 INFO L349 Elim1Store]: treesize reduction 8, result has 88.4 percent of original size [2024-11-07 11:30:18,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 100 [2024-11-07 11:30:18,744 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:30:18,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 47 [2024-11-07 11:30:18,754 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-07 11:30:18,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 57 [2024-11-07 11:30:18,803 INFO L349 Elim1Store]: treesize reduction 8, result has 86.0 percent of original size [2024-11-07 11:30:18,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 88 [2024-11-07 11:30:18,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:30:18,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 47 [2024-11-07 11:30:18,881 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-07 11:30:18,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 57 [2024-11-07 11:30:18,920 INFO L349 Elim1Store]: treesize reduction 8, result has 86.0 percent of original size [2024-11-07 11:30:18,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 88 [2024-11-07 11:30:19,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:30:19,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 81 [2024-11-07 11:30:19,083 INFO L349 Elim1Store]: treesize reduction 23, result has 48.9 percent of original size [2024-11-07 11:30:19,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 134 treesize of output 122 [2024-11-07 11:30:19,184 INFO L349 Elim1Store]: treesize reduction 58, result has 64.6 percent of original size [2024-11-07 11:30:19,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 102 treesize of output 152 [2024-11-07 11:30:19,686 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:30:19,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 71 [2024-11-07 11:30:19,702 INFO L349 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2024-11-07 11:30:19,703 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 122 treesize of output 102 [2024-11-07 11:30:19,802 INFO L349 Elim1Store]: treesize reduction 67, result has 60.4 percent of original size [2024-11-07 11:30:19,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 107 treesize of output 156 [2024-11-07 11:30:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:20,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446331956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:20,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:20,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 20] total 54 [2024-11-07 11:30:20,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805592017] [2024-11-07 11:30:20,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:20,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-07 11:30:20,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:20,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-07 11:30:20,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=2561, Unknown=4, NotChecked=0, Total=2970 [2024-11-07 11:30:20,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-11-07 11:30:20,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 81 transitions, 674 flow. Second operand has 55 states, 55 states have (on average 6.890909090909091) internal successors, (379), 55 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:20,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:20,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-11-07 11:30:20,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand