./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC --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 b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 02:09:22,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 02:09:22,291 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 02:09:22,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 02:09:22,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 02:09:22,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 02:09:22,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 02:09:22,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 02:09:22,332 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 02:09:22,332 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 02:09:22,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 02:09:22,332 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 02:09:22,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 02:09:22,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 02:09:22,332 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 02:09:22,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 02:09:22,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 02:09:22,333 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 02:09:22,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 02:09:22,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 02:09:22,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 02:09:22,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 02:09:22,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 02:09:22,333 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 02:09:22,333 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 02:09:22,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 02:09:22,334 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 02:09:22,334 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 02:09:22,334 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 02:09:22,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:09:22,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:09:22,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:09:22,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:09:22,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 02:09:22,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:09:22,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:09:22,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:09:22,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:09:22,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 02:09:22,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 02:09:22,335 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 02:09:22,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 02:09:22,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 02:09:22,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 02:09:22,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 02:09:22,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 02:09:22,336 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 02:09:22,336 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 02:09:22,336 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC 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 -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2024-11-24 02:09:22,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 02:09:22,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 02:09:22,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 02:09:22,671 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 02:09:22,671 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 02:09:22,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-11-24 02:09:25,644 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/data/14639dcb0/b169088171d74b228d370db53395cab5/FLAGee9150c74 [2024-11-24 02:09:25,969 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 02:09:25,969 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-11-24 02:09:25,978 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/data/14639dcb0/b169088171d74b228d370db53395cab5/FLAGee9150c74 [2024-11-24 02:09:25,994 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/data/14639dcb0/b169088171d74b228d370db53395cab5 [2024-11-24 02:09:25,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 02:09:26,000 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 02:09:26,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 02:09:26,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 02:09:26,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 02:09:26,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:09:25" (1/1) ... [2024-11-24 02:09:26,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc5679e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26, skipping insertion in model container [2024-11-24 02:09:26,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:09:25" (1/1) ... [2024-11-24 02:09:26,035 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 02:09:26,288 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2024-11-24 02:09:26,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:09:26,317 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 02:09:26,350 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2024-11-24 02:09:26,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:09:26,383 INFO L204 MainTranslator]: Completed translation [2024-11-24 02:09:26,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26 WrapperNode [2024-11-24 02:09:26,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 02:09:26,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 02:09:26,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 02:09:26,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 02:09:26,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,441 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 290 [2024-11-24 02:09:26,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 02:09:26,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 02:09:26,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 02:09:26,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 02:09:26,451 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,455 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,470 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-24 02:09:26,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,479 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 02:09:26,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 02:09:26,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 02:09:26,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 02:09:26,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (1/1) ... [2024-11-24 02:09:26,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:09:26,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:09:26,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 02:09:26,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 02:09:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 02:09:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 02:09:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 02:09:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 02:09:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 02:09:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 02:09:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 02:09:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 02:09:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 02:09:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 02:09:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 02:09:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-24 02:09:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-24 02:09:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 02:09:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 02:09:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-24 02:09:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-24 02:09:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 02:09:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 02:09:26,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 02:09:26,565 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 02:09:26,679 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 02:09:26,680 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 02:09:27,180 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 02:09:27,181 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 02:09:27,641 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 02:09:27,641 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-24 02:09:27,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:09:27 BoogieIcfgContainer [2024-11-24 02:09:27,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 02:09:27,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 02:09:27,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 02:09:27,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 02:09:27,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:09:25" (1/3) ... [2024-11-24 02:09:27,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ada6d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:09:27, skipping insertion in model container [2024-11-24 02:09:27,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:09:26" (2/3) ... [2024-11-24 02:09:27,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ada6d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:09:27, skipping insertion in model container [2024-11-24 02:09:27,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:09:27" (3/3) ... [2024-11-24 02:09:27,653 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2024-11-24 02:09:27,671 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 02:09:27,672 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-1.wvr.c that has 5 procedures, 46 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-24 02:09:27,672 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 02:09:27,765 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-24 02:09:27,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 54 transitions, 136 flow [2024-11-24 02:09:27,891 INFO L124 PetriNetUnfolderBase]: 9/50 cut-off events. [2024-11-24 02:09:27,894 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-24 02:09:27,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 50 events. 9/50 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-24 02:09:27,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 54 transitions, 136 flow [2024-11-24 02:09:27,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 49 transitions, 122 flow [2024-11-24 02:09:27,920 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:09:27,935 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;@68966aa0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:09:27,935 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-24 02:09:27,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 02:09:27,966 INFO L124 PetriNetUnfolderBase]: 9/48 cut-off events. [2024-11-24 02:09:27,966 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-24 02:09:27,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:09:27,967 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:09:27,968 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 02:09:27,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:09:27,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1134782579, now seen corresponding path program 1 times [2024-11-24 02:09:27,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:09:27,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539463874] [2024-11-24 02:09:27,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:09:27,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:09:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:09:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:09:28,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:09:28,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539463874] [2024-11-24 02:09:28,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539463874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:09:28,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:09:28,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:09:28,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173025213] [2024-11-24 02:09:28,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:09:28,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 02:09:28,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:09:28,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 02:09:28,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 02:09:28,290 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-24 02:09:28,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 122 flow. Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:09:28,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:09:28,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-24 02:09:28,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:09:31,629 INFO L124 PetriNetUnfolderBase]: 19897/25901 cut-off events. [2024-11-24 02:09:31,631 INFO L125 PetriNetUnfolderBase]: For 1351/1351 co-relation queries the response was YES. [2024-11-24 02:09:31,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52936 conditions, 25901 events. 19897/25901 cut-off events. For 1351/1351 co-relation queries the response was YES. Maximal size of possible extension queue 1002. Compared 129913 event pairs, 16674 based on Foata normal form. 0/22639 useless extension candidates. Maximal degree in co-relation 49449. Up to 25830 conditions per place. [2024-11-24 02:09:31,844 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 40 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2024-11-24 02:09:31,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 194 flow [2024-11-24 02:09:31,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 02:09:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-24 02:09:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2024-11-24 02:09:31,859 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-24 02:09:31,860 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 122 flow. Second operand 2 states and 62 transitions. [2024-11-24 02:09:31,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 194 flow [2024-11-24 02:09:31,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-24 02:09:31,894 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 98 flow [2024-11-24 02:09:31,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-24 02:09:31,905 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2024-11-24 02:09:31,906 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 98 flow [2024-11-24 02:09:31,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:09:31,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:09:31,907 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:09:31,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 02:09:31,908 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 02:09:31,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:09:31,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1845599765, now seen corresponding path program 1 times [2024-11-24 02:09:31,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:09:31,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309689434] [2024-11-24 02:09:31,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:09:31,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:09:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:09:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:09:32,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:09:32,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309689434] [2024-11-24 02:09:32,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309689434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:09:32,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:09:32,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:09:32,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070254149] [2024-11-24 02:09:32,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:09:32,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:09:32,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:09:32,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:09:32,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:09:32,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-24 02:09:32,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-24 02:09:32,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:09:32,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-24 02:09:32,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:09:35,588 INFO L124 PetriNetUnfolderBase]: 31442/40868 cut-off events. [2024-11-24 02:09:35,588 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2024-11-24 02:09:35,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82330 conditions, 40868 events. 31442/40868 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 223398 event pairs, 9215 based on Foata normal form. 1/35471 useless extension candidates. Maximal degree in co-relation 82327. Up to 28277 conditions per place. [2024-11-24 02:09:35,802 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 69 selfloop transitions, 5 changer transitions 1/80 dead transitions. [2024-11-24 02:09:35,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 80 transitions, 325 flow [2024-11-24 02:09:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:09:35,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 02:09:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-24 02:09:35,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6358024691358025 [2024-11-24 02:09:35,806 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 98 flow. Second operand 3 states and 103 transitions. [2024-11-24 02:09:35,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 80 transitions, 325 flow [2024-11-24 02:09:35,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 80 transitions, 325 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 02:09:35,813 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 131 flow [2024-11-24 02:09:35,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2024-11-24 02:09:35,813 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2024-11-24 02:09:35,814 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 131 flow [2024-11-24 02:09:35,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-24 02:09:35,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:09:35,814 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:09:35,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 02:09:35,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 02:09:35,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:09:35,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1228234022, now seen corresponding path program 1 times [2024-11-24 02:09:35,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:09:35,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575009795] [2024-11-24 02:09:35,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:09:35,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:09:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:09:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:09:36,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:09:36,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575009795] [2024-11-24 02:09:36,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575009795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:09:36,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:09:36,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:09:36,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324641675] [2024-11-24 02:09:36,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:09:36,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:09:36,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:09:36,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:09:36,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:09:36,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-24 02:09:36,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:09:36,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:09:36,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-24 02:09:36,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:09:39,966 INFO L124 PetriNetUnfolderBase]: 47144/62028 cut-off events. [2024-11-24 02:09:39,967 INFO L125 PetriNetUnfolderBase]: For 4577/4577 co-relation queries the response was YES. [2024-11-24 02:09:40,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134506 conditions, 62028 events. 47144/62028 cut-off events. For 4577/4577 co-relation queries the response was YES. Maximal size of possible extension queue 2228. Compared 357039 event pairs, 39870 based on Foata normal form. 2027/55156 useless extension candidates. Maximal degree in co-relation 134501. Up to 40409 conditions per place. [2024-11-24 02:09:40,375 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 43 selfloop transitions, 2 changer transitions 35/85 dead transitions. [2024-11-24 02:09:40,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 85 transitions, 384 flow [2024-11-24 02:09:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:09:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 02:09:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-24 02:09:40,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-11-24 02:09:40,381 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 131 flow. Second operand 4 states and 113 transitions. [2024-11-24 02:09:40,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 85 transitions, 384 flow [2024-11-24 02:09:40,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 85 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 02:09:40,390 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 144 flow [2024-11-24 02:09:40,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-24 02:09:40,392 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-11-24 02:09:40,393 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 144 flow [2024-11-24 02:09:40,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:09:40,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:09:40,393 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:09:40,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 02:09:40,394 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 02:09:40,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:09:40,395 INFO L85 PathProgramCache]: Analyzing trace with hash 72400178, now seen corresponding path program 1 times [2024-11-24 02:09:40,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:09:40,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695967630] [2024-11-24 02:09:40,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:09:40,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:09:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:09:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:09:40,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:09:40,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695967630] [2024-11-24 02:09:40,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695967630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:09:40,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459460354] [2024-11-24 02:09:40,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:09:40,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:09:40,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:09:40,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:09:40,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 02:09:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:09:40,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 02:09:40,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:09:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:09:41,033 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:09:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:09:41,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459460354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:09:41,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:09:41,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-24 02:09:41,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427789640] [2024-11-24 02:09:41,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:09:41,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 02:09:41,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:09:41,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 02:09:41,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:09:41,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-24 02:09:41,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 144 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 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) [2024-11-24 02:09:41,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:09:41,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-24 02:09:41,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:09:44,749 INFO L124 PetriNetUnfolderBase]: 47144/62031 cut-off events. [2024-11-24 02:09:44,749 INFO L125 PetriNetUnfolderBase]: For 9178/9178 co-relation queries the response was YES. [2024-11-24 02:09:44,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134402 conditions, 62031 events. 47144/62031 cut-off events. For 9178/9178 co-relation queries the response was YES. Maximal size of possible extension queue 2228. Compared 357074 event pairs, 39870 based on Foata normal form. 2026/55158 useless extension candidates. Maximal degree in co-relation 134395. Up to 40408 conditions per place. [2024-11-24 02:09:45,007 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 75 selfloop transitions, 5 changer transitions 2/87 dead transitions. [2024-11-24 02:09:45,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 408 flow [2024-11-24 02:09:45,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:09:45,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 02:09:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-24 02:09:45,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-11-24 02:09:45,009 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 144 flow. Second operand 6 states and 132 transitions. [2024-11-24 02:09:45,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 408 flow [2024-11-24 02:09:45,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 400 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-24 02:09:45,021 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 179 flow [2024-11-24 02:09:45,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-24 02:09:45,022 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-11-24 02:09:45,022 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 179 flow [2024-11-24 02:09:45,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 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) [2024-11-24 02:09:45,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:09:45,023 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:09:45,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 02:09:45,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:09:45,227 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 02:09:45,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:09:45,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1048159636, now seen corresponding path program 1 times [2024-11-24 02:09:45,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:09:45,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817999502] [2024-11-24 02:09:45,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:09:45,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:09:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:09:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:09:45,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:09:45,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817999502] [2024-11-24 02:09:45,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817999502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:09:45,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725456419] [2024-11-24 02:09:45,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:09:45,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:09:45,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:09:45,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:09:45,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 02:09:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:09:45,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 02:09:45,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:09:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:09:45,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:09:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:09:46,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725456419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:09:46,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:09:46,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-24 02:09:46,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79545615] [2024-11-24 02:09:46,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:09:46,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 02:09:46,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:09:46,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 02:09:46,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:09:46,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-24 02:09:46,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 179 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 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) [2024-11-24 02:09:46,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:09:46,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-24 02:09:46,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:09:48,919 INFO L124 PetriNetUnfolderBase]: 35526/46748 cut-off events. [2024-11-24 02:09:48,919 INFO L125 PetriNetUnfolderBase]: For 11625/11625 co-relation queries the response was YES. [2024-11-24 02:09:49,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104805 conditions, 46748 events. 35526/46748 cut-off events. For 11625/11625 co-relation queries the response was YES. Maximal size of possible extension queue 1639. Compared 259451 event pairs, 29704 based on Foata normal form. 611/40786 useless extension candidates. Maximal degree in co-relation 104796. Up to 40408 conditions per place. [2024-11-24 02:09:49,096 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 42 selfloop transitions, 4 changer transitions 29/80 dead transitions. [2024-11-24 02:09:49,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 387 flow [2024-11-24 02:09:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:09:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 02:09:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-24 02:09:49,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39197530864197533 [2024-11-24 02:09:49,098 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 179 flow. Second operand 6 states and 127 transitions. [2024-11-24 02:09:49,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 387 flow [2024-11-24 02:09:49,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 372 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-24 02:09:49,110 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 162 flow [2024-11-24 02:09:49,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-11-24 02:09:49,111 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-11-24 02:09:49,111 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 162 flow [2024-11-24 02:09:49,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 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) [2024-11-24 02:09:49,111 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:09:49,111 INFO L206 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:09:49,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 02:09:49,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:09:49,316 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 02:09:49,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:09:49,316 INFO L85 PathProgramCache]: Analyzing trace with hash -474937788, now seen corresponding path program 2 times [2024-11-24 02:09:49,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:09:49,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613914073] [2024-11-24 02:09:49,317 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:09:49,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:09:49,360 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 02:09:49,361 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:09:49,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 02:09:49,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:09:49,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613914073] [2024-11-24 02:09:49,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613914073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:09:49,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:09:49,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:09:49,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531301070] [2024-11-24 02:09:49,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:09:49,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:09:49,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:09:49,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:09:49,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:09:49,499 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-24 02:09:49,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-11-24 02:09:49,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:09:49,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-24 02:09:49,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:09:55,412 INFO L124 PetriNetUnfolderBase]: 70326/91172 cut-off events. [2024-11-24 02:09:55,412 INFO L125 PetriNetUnfolderBase]: For 15130/15130 co-relation queries the response was YES. [2024-11-24 02:09:55,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207348 conditions, 91172 events. 70326/91172 cut-off events. For 15130/15130 co-relation queries the response was YES. Maximal size of possible extension queue 3002. Compared 532944 event pairs, 19932 based on Foata normal form. 1/79476 useless extension candidates. Maximal degree in co-relation 207338. Up to 31389 conditions per place. [2024-11-24 02:09:55,746 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 112 selfloop transitions, 8 changer transitions 1/126 dead transitions. [2024-11-24 02:09:55,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 126 transitions, 620 flow [2024-11-24 02:09:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:09:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 02:09:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-24 02:09:55,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-24 02:09:55,747 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 162 flow. Second operand 4 states and 144 transitions. [2024-11-24 02:09:55,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 126 transitions, 620 flow [2024-11-24 02:09:55,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 126 transitions, 608 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-24 02:09:55,754 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 226 flow [2024-11-24 02:09:55,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-24 02:09:55,755 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-11-24 02:09:55,755 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 226 flow [2024-11-24 02:09:55,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-11-24 02:09:55,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:09:55,756 INFO L206 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:09:55,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 02:09:55,756 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 02:09:55,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:09:55,757 INFO L85 PathProgramCache]: Analyzing trace with hash -211421624, now seen corresponding path program 2 times [2024-11-24 02:09:55,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:09:55,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336501318] [2024-11-24 02:09:55,757 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:09:55,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:09:55,780 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 02:09:55,781 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:09:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 02:09:55,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:09:55,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336501318] [2024-11-24 02:09:55,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336501318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:09:55,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:09:55,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:09:55,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812346305] [2024-11-24 02:09:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:09:55,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:09:55,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:09:55,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:09:55,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:09:55,892 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-24 02:09:55,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-11-24 02:09:55,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:09:55,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-24 02:09:55,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:10:02,626 INFO L124 PetriNetUnfolderBase]: 80077/103811 cut-off events. [2024-11-24 02:10:02,626 INFO L125 PetriNetUnfolderBase]: For 51465/51465 co-relation queries the response was YES. [2024-11-24 02:10:02,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255355 conditions, 103811 events. 80077/103811 cut-off events. For 51465/51465 co-relation queries the response was YES. Maximal size of possible extension queue 3433. Compared 608110 event pairs, 14876 based on Foata normal form. 1/90182 useless extension candidates. Maximal degree in co-relation 255344. Up to 82350 conditions per place. [2024-11-24 02:10:03,007 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 100 selfloop transitions, 9 changer transitions 6/120 dead transitions. [2024-11-24 02:10:03,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 120 transitions, 640 flow [2024-11-24 02:10:03,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:10:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 02:10:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-24 02:10:03,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6342592592592593 [2024-11-24 02:10:03,009 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 226 flow. Second operand 4 states and 137 transitions. [2024-11-24 02:10:03,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 120 transitions, 640 flow [2024-11-24 02:10:03,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 604 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-24 02:10:03,903 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 279 flow [2024-11-24 02:10:03,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-11-24 02:10:03,904 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2024-11-24 02:10:03,904 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 279 flow [2024-11-24 02:10:03,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-11-24 02:10:03,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:10:03,904 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:03,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 02:10:03,905 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 02:10:03,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:03,905 INFO L85 PathProgramCache]: Analyzing trace with hash 454375453, now seen corresponding path program 1 times [2024-11-24 02:10:03,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:03,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015356110] [2024-11-24 02:10:03,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:03,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:10:05,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:05,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015356110] [2024-11-24 02:10:05,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015356110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:10:05,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376206428] [2024-11-24 02:10:05,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:05,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:10:05,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:10:05,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:10:05,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c626cde-a756-418c-8844-fd4aaa7c3585/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 02:10:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:05,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 02:10:05,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:10:05,823 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:10:05,824 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 21 treesize of output 15 [2024-11-24 02:10:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 02:10:05,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:10:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 02:10:06,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376206428] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 02:10:06,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:10:06,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 8] total 20 [2024-11-24 02:10:06,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890570720] [2024-11-24 02:10:06,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:10:06,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:10:06,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:06,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:10:06,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-24 02:10:06,207 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-24 02:10:06,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2024-11-24 02:10:06,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:10:06,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-24 02:10:06,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand