./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd --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 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:25:06,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:25:06,917 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:25:06,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:25:06,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:25:06,976 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:25:06,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:25:06,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:25:06,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:25:06,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:25:06,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:25:06,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:25:06,982 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:25:06,982 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:25:06,982 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:25:06,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:25:06,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:25:06,982 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:25:06,983 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:25:06,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:25:06,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:25:06,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:25:06,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:25:06,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:25:06,983 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:25:06,983 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:25:06,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:25:06,984 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:25:06,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:25:06,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:25:06,984 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:25:06,984 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:25:06,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:25:06,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:25:06,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:25:06,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:25:06,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:25:06,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:25:06,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:25:06,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:25:06,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:25:06,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:25:06,987 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_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd 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 -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-11-13 13:25:07,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:25:07,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:25:07,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:25:07,372 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:25:07,372 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:25:07,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c Unable to find full path for "g++" [2024-11-13 13:25:09,646 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:25:09,980 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:25:09,980 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-13 13:25:09,990 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/data/456545e71/6dc9a4d3a67e4a2180911f998dbf7673/FLAG5d7d86917 [2024-11-13 13:25:10,008 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/data/456545e71/6dc9a4d3a67e4a2180911f998dbf7673 [2024-11-13 13:25:10,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:25:10,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:25:10,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:25:10,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:25:10,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:25:10,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62cd3147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10, skipping insertion in model container [2024-11-13 13:25:10,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,050 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:25:10,298 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_458b90dd-6f13-4a39-81ba-7bf6d726f6db/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c[2564,2577] [2024-11-13 13:25:10,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:25:10,346 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:25:10,391 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_458b90dd-6f13-4a39-81ba-7bf6d726f6db/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c[2564,2577] [2024-11-13 13:25:10,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:25:10,430 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:25:10,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10 WrapperNode [2024-11-13 13:25:10,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:25:10,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:25:10,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:25:10,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:25:10,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,482 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 178 [2024-11-13 13:25:10,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:25:10,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:25:10,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:25:10,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:25:10,496 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,499 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,517 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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]. [2024-11-13 13:25:10,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,551 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:25:10,552 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:25:10,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:25:10,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:25:10,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (1/1) ... [2024-11-13 13:25:10,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:25:10,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:25:10,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:25:10,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:25:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:25:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 13:25:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 13:25:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 13:25:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 13:25:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 13:25:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 13:25:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:25:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:25:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:25:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:25:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 13:25:10,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 13:25:10,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 13:25:10,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:25:10,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:25:10,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:25:10,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:25:10,656 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:25:10,838 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:25:10,840 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:25:11,279 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:25:11,280 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:25:11,699 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:25:11,701 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 13:25:11,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:25:11 BoogieIcfgContainer [2024-11-13 13:25:11,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:25:11,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:25:11,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:25:11,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:25:11,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:25:10" (1/3) ... [2024-11-13 13:25:11,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6190627b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:25:11, skipping insertion in model container [2024-11-13 13:25:11,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:25:10" (2/3) ... [2024-11-13 13:25:11,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6190627b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:25:11, skipping insertion in model container [2024-11-13 13:25:11,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:25:11" (3/3) ... [2024-11-13 13:25:11,717 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-11-13 13:25:11,737 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:25:11,738 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-array-sum-alt2.wvr.c that has 4 procedures, 30 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-13 13:25:11,738 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:25:11,830 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 13:25:11,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2024-11-13 13:25:11,948 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-13 13:25:11,951 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 13:25:11,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 4/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-13 13:25:11,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2024-11-13 13:25:11,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2024-11-13 13:25:11,975 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:25:11,988 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;@4021695f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:25:11,989 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 13:25:12,004 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:25:12,005 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-13 13:25:12,005 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 13:25:12,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:12,006 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:25:12,006 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:12,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:12,012 INFO L85 PathProgramCache]: Analyzing trace with hash 777333417, now seen corresponding path program 1 times [2024-11-13 13:25:12,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:12,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479592326] [2024-11-13 13:25:12,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:12,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:12,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:12,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479592326] [2024-11-13 13:25:12,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479592326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:25:12,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:25:12,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:25:12,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938263505] [2024-11-13 13:25:12,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:25:12,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:25:12,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:12,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:25:12,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:25:12,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-13 13:25:12,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 76 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) [2024-11-13 13:25:12,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:12,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-13 13:25:12,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:13,086 INFO L124 PetriNetUnfolderBase]: 617/948 cut-off events. [2024-11-13 13:25:13,086 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-11-13 13:25:13,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 948 events. 617/948 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3719 event pairs, 126 based on Foata normal form. 1/935 useless extension candidates. Maximal degree in co-relation 1709. Up to 677 conditions per place. [2024-11-13 13:25:13,104 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2024-11-13 13:25:13,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2024-11-13 13:25:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:25:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:25:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-13 13:25:13,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-13 13:25:13,136 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2024-11-13 13:25:13,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2024-11-13 13:25:13,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 13:25:13,152 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2024-11-13 13:25:13,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-11-13 13:25:13,162 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-11-13 13:25:13,163 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2024-11-13 13:25:13,163 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) [2024-11-13 13:25:13,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:13,164 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] [2024-11-13 13:25:13,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:25:13,165 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:13,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:13,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1810387927, now seen corresponding path program 1 times [2024-11-13 13:25:13,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:13,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658577711] [2024-11-13 13:25:13,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:13,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:13,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:13,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658577711] [2024-11-13 13:25:13,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658577711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:25:13,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:25:13,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:25:13,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175483513] [2024-11-13 13:25:13,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:25:13,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:25:13,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:13,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:25:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:25:13,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-13 13:25:13,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-13 13:25:13,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:13,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-13 13:25:13,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:14,150 INFO L124 PetriNetUnfolderBase]: 1206/1854 cut-off events. [2024-11-13 13:25:14,151 INFO L125 PetriNetUnfolderBase]: For 332/336 co-relation queries the response was YES. [2024-11-13 13:25:14,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4176 conditions, 1854 events. 1206/1854 cut-off events. For 332/336 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8761 event pairs, 745 based on Foata normal form. 0/1746 useless extension candidates. Maximal degree in co-relation 1070. Up to 1120 conditions per place. [2024-11-13 13:25:14,171 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 63 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2024-11-13 13:25:14,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 71 transitions, 334 flow [2024-11-13 13:25:14,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:25:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:25:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-11-13 13:25:14,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2024-11-13 13:25:14,174 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 5 states and 92 transitions. [2024-11-13 13:25:14,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 71 transitions, 334 flow [2024-11-13 13:25:14,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 71 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:25:14,178 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 122 flow [2024-11-13 13:25:14,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-11-13 13:25:14,179 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-13 13:25:14,179 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 122 flow [2024-11-13 13:25:14,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-13 13:25:14,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:14,179 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] [2024-11-13 13:25:14,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:25:14,180 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:14,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1271760886, now seen corresponding path program 1 times [2024-11-13 13:25:14,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:14,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258339365] [2024-11-13 13:25:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:14,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:14,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:14,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258339365] [2024-11-13 13:25:14,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258339365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:25:14,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:25:14,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:25:14,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726642905] [2024-11-13 13:25:14,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:25:14,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:25:14,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:14,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:25:14,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:25:14,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-13 13:25:14,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-13 13:25:14,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:14,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-13 13:25:14,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:14,974 INFO L124 PetriNetUnfolderBase]: 1047/1620 cut-off events. [2024-11-13 13:25:14,975 INFO L125 PetriNetUnfolderBase]: For 669/747 co-relation queries the response was YES. [2024-11-13 13:25:14,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3878 conditions, 1620 events. 1047/1620 cut-off events. For 669/747 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7412 event pairs, 686 based on Foata normal form. 0/1517 useless extension candidates. Maximal degree in co-relation 2760. Up to 1133 conditions per place. [2024-11-13 13:25:14,991 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 56 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-11-13 13:25:14,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 326 flow [2024-11-13 13:25:14,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:25:14,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:25:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-13 13:25:14,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-11-13 13:25:14,995 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 122 flow. Second operand 5 states and 87 transitions. [2024-11-13 13:25:14,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 326 flow [2024-11-13 13:25:14,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 322 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 13:25:15,000 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 143 flow [2024-11-13 13:25:15,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-13 13:25:15,003 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2024-11-13 13:25:15,003 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 143 flow [2024-11-13 13:25:15,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-13 13:25:15,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:15,004 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] [2024-11-13 13:25:15,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:25:15,004 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:15,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash 132286743, now seen corresponding path program 1 times [2024-11-13 13:25:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:15,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238217055] [2024-11-13 13:25:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:15,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:15,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:15,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238217055] [2024-11-13 13:25:15,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238217055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:25:15,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:25:15,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:25:15,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060043276] [2024-11-13 13:25:15,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:25:15,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:25:15,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:15,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:25:15,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:25:15,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-13 13:25:15,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-13 13:25:15,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:15,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-13 13:25:15,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:15,653 INFO L124 PetriNetUnfolderBase]: 882/1343 cut-off events. [2024-11-13 13:25:15,657 INFO L125 PetriNetUnfolderBase]: For 769/902 co-relation queries the response was YES. [2024-11-13 13:25:15,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3516 conditions, 1343 events. 882/1343 cut-off events. For 769/902 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5684 event pairs, 601 based on Foata normal form. 0/1278 useless extension candidates. Maximal degree in co-relation 2839. Up to 1095 conditions per place. [2024-11-13 13:25:15,675 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 28 selfloop transitions, 2 changer transitions 23/56 dead transitions. [2024-11-13 13:25:15,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 309 flow [2024-11-13 13:25:15,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:25:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:25:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-11-13 13:25:15,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-11-13 13:25:15,677 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 143 flow. Second operand 5 states and 81 transitions. [2024-11-13 13:25:15,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 309 flow [2024-11-13 13:25:15,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:25:15,683 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 116 flow [2024-11-13 13:25:15,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2024-11-13 13:25:15,686 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2024-11-13 13:25:15,687 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 116 flow [2024-11-13 13:25:15,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-13 13:25:15,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:15,689 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:25:15,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:25:15,689 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:15,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:15,690 INFO L85 PathProgramCache]: Analyzing trace with hash -160204727, now seen corresponding path program 1 times [2024-11-13 13:25:15,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:15,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630781359] [2024-11-13 13:25:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:15,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:15,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:15,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630781359] [2024-11-13 13:25:15,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630781359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:15,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434146251] [2024-11-13 13:25:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:15,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:15,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:25:15,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:25:16,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:25:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:16,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:25:16,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:25:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:16,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:25:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:16,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434146251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:25:16,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:25:16,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-13 13:25:16,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890682250] [2024-11-13 13:25:16,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:25:16,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:25:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:25:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:25:16,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-13 13:25:16,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 116 flow. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 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) [2024-11-13 13:25:16,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:16,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-13 13:25:16,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:17,662 INFO L124 PetriNetUnfolderBase]: 1504/2186 cut-off events. [2024-11-13 13:25:17,663 INFO L125 PetriNetUnfolderBase]: For 857/1011 co-relation queries the response was YES. [2024-11-13 13:25:17,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5867 conditions, 2186 events. 1504/2186 cut-off events. For 857/1011 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9674 event pairs, 293 based on Foata normal form. 0/1936 useless extension candidates. Maximal degree in co-relation 5848. Up to 666 conditions per place. [2024-11-13 13:25:17,684 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 96 selfloop transitions, 17 changer transitions 0/115 dead transitions. [2024-11-13 13:25:17,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 115 transitions, 617 flow [2024-11-13 13:25:17,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:25:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:25:17,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-11-13 13:25:17,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4297520661157025 [2024-11-13 13:25:17,689 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 116 flow. Second operand 11 states and 156 transitions. [2024-11-13 13:25:17,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 115 transitions, 617 flow [2024-11-13 13:25:17,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 115 transitions, 543 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-11-13 13:25:17,712 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 183 flow [2024-11-13 13:25:17,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=183, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-11-13 13:25:17,717 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2024-11-13 13:25:17,717 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 183 flow [2024-11-13 13:25:17,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 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) [2024-11-13 13:25:17,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:17,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:25:17,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:25:17,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:17,919 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:17,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:17,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1000911067, now seen corresponding path program 2 times [2024-11-13 13:25:17,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:17,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548164538] [2024-11-13 13:25:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:17,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:18,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:18,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548164538] [2024-11-13 13:25:18,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548164538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:18,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244926092] [2024-11-13 13:25:18,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:25:18,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:18,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:25:18,147 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:25:18,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:25:18,272 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:25:18,273 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:25:18,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:25:18,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:25:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:18,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:25:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:18,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244926092] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:18,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:25:18,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-13 13:25:18,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143390448] [2024-11-13 13:25:18,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:25:18,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:25:18,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:18,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:25:18,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:25:18,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-13 13:25:18,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-13 13:25:18,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:18,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-13 13:25:18,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:19,200 INFO L124 PetriNetUnfolderBase]: 1884/2742 cut-off events. [2024-11-13 13:25:19,201 INFO L125 PetriNetUnfolderBase]: For 1468/1468 co-relation queries the response was YES. [2024-11-13 13:25:19,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7483 conditions, 2742 events. 1884/2742 cut-off events. For 1468/1468 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12421 event pairs, 290 based on Foata normal form. 14/2755 useless extension candidates. Maximal degree in co-relation 7459. Up to 745 conditions per place. [2024-11-13 13:25:19,220 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 87 selfloop transitions, 29 changer transitions 0/118 dead transitions. [2024-11-13 13:25:19,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 118 transitions, 675 flow [2024-11-13 13:25:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:25:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 13:25:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-11-13 13:25:19,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-11-13 13:25:19,222 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 183 flow. Second operand 9 states and 130 transitions. [2024-11-13 13:25:19,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 118 transitions, 675 flow [2024-11-13 13:25:19,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 118 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:25:19,237 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 393 flow [2024-11-13 13:25:19,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=393, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2024-11-13 13:25:19,238 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 24 predicate places. [2024-11-13 13:25:19,238 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 393 flow [2024-11-13 13:25:19,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-13 13:25:19,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:19,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:25:19,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:25:19,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:19,439 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:19,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash -753143851, now seen corresponding path program 3 times [2024-11-13 13:25:19,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:19,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992485026] [2024-11-13 13:25:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:19,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:19,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:19,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992485026] [2024-11-13 13:25:19,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992485026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:19,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539308824] [2024-11-13 13:25:19,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:25:19,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:19,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:25:19,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:25:19,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:25:19,830 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 13:25:19,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:25:19,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:25:19,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:25:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:20,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:25:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:20,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539308824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:25:20,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:25:20,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2024-11-13 13:25:20,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144570366] [2024-11-13 13:25:20,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:25:20,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:25:20,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:20,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:25:20,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:25:20,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-13 13:25:20,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 393 flow. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 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) [2024-11-13 13:25:20,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:20,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-13 13:25:20,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:21,566 INFO L124 PetriNetUnfolderBase]: 2771/3995 cut-off events. [2024-11-13 13:25:21,567 INFO L125 PetriNetUnfolderBase]: For 6908/6908 co-relation queries the response was YES. [2024-11-13 13:25:21,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13904 conditions, 3995 events. 2771/3995 cut-off events. For 6908/6908 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 19106 event pairs, 482 based on Foata normal form. 16/4010 useless extension candidates. Maximal degree in co-relation 13873. Up to 1231 conditions per place. [2024-11-13 13:25:21,607 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 134 selfloop transitions, 62 changer transitions 0/198 dead transitions. [2024-11-13 13:25:21,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 198 transitions, 1403 flow [2024-11-13 13:25:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:25:21,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 13:25:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 212 transitions. [2024-11-13 13:25:21,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4588744588744589 [2024-11-13 13:25:21,610 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 393 flow. Second operand 14 states and 212 transitions. [2024-11-13 13:25:21,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 198 transitions, 1403 flow [2024-11-13 13:25:21,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 198 transitions, 1376 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-13 13:25:21,697 INFO L231 Difference]: Finished difference. Result has 77 places, 97 transitions, 886 flow [2024-11-13 13:25:21,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=886, PETRI_PLACES=77, PETRI_TRANSITIONS=97} [2024-11-13 13:25:21,698 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 42 predicate places. [2024-11-13 13:25:21,698 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 97 transitions, 886 flow [2024-11-13 13:25:21,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 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) [2024-11-13 13:25:21,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:21,699 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:25:21,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:25:21,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:21,899 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:21,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:21,900 INFO L85 PathProgramCache]: Analyzing trace with hash 357502181, now seen corresponding path program 4 times [2024-11-13 13:25:21,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:21,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039074662] [2024-11-13 13:25:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:21,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:22,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:22,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039074662] [2024-11-13 13:25:22,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039074662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:22,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407178405] [2024-11-13 13:25:22,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:25:22,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:22,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:25:22,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:25:22,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:25:22,263 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:25:22,263 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:25:22,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:25:22,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:25:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:22,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:25:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:22,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407178405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:25:22,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:25:22,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-13 13:25:22,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705726288] [2024-11-13 13:25:22,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:25:22,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:25:22,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:22,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:25:22,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:25:22,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-13 13:25:22,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 97 transitions, 886 flow. Second operand has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 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) [2024-11-13 13:25:22,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:22,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-13 13:25:22,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:25,009 INFO L124 PetriNetUnfolderBase]: 4160/5958 cut-off events. [2024-11-13 13:25:25,010 INFO L125 PetriNetUnfolderBase]: For 20410/20410 co-relation queries the response was YES. [2024-11-13 13:25:25,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24154 conditions, 5958 events. 4160/5958 cut-off events. For 20410/20410 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 29045 event pairs, 261 based on Foata normal form. 20/5632 useless extension candidates. Maximal degree in co-relation 24114. Up to 1202 conditions per place. [2024-11-13 13:25:25,065 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 219 selfloop transitions, 163 changer transitions 0/383 dead transitions. [2024-11-13 13:25:25,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 383 transitions, 3543 flow [2024-11-13 13:25:25,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 13:25:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 13:25:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 347 transitions. [2024-11-13 13:25:25,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40442890442890445 [2024-11-13 13:25:25,069 INFO L175 Difference]: Start difference. First operand has 77 places, 97 transitions, 886 flow. Second operand 26 states and 347 transitions. [2024-11-13 13:25:25,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 383 transitions, 3543 flow [2024-11-13 13:25:25,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 383 transitions, 3368 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-11-13 13:25:25,280 INFO L231 Difference]: Finished difference. Result has 107 places, 208 transitions, 2311 flow [2024-11-13 13:25:25,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2311, PETRI_PLACES=107, PETRI_TRANSITIONS=208} [2024-11-13 13:25:25,281 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 72 predicate places. [2024-11-13 13:25:25,281 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 208 transitions, 2311 flow [2024-11-13 13:25:25,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 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) [2024-11-13 13:25:25,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:25,285 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:25:25,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:25:25,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:25,490 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:25,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:25,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2074083893, now seen corresponding path program 5 times [2024-11-13 13:25:25,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:25,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496696941] [2024-11-13 13:25:25,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:25,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:25,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:25,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496696941] [2024-11-13 13:25:25,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496696941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:25,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325181362] [2024-11-13 13:25:25,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:25:25,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:25,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:25:25,710 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:25:25,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:25:25,828 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:25:25,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:25:25,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:25:25,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:25:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:25,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:25:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:26,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325181362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:25:26,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:25:26,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-13 13:25:26,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022142442] [2024-11-13 13:25:26,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:25:26,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:25:26,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:26,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:25:26,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:25:26,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-13 13:25:26,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 208 transitions, 2311 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 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) [2024-11-13 13:25:26,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:26,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-13 13:25:26,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:28,531 INFO L124 PetriNetUnfolderBase]: 4609/6582 cut-off events. [2024-11-13 13:25:28,531 INFO L125 PetriNetUnfolderBase]: For 26916/26916 co-relation queries the response was YES. [2024-11-13 13:25:28,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29739 conditions, 6582 events. 4609/6582 cut-off events. For 26916/26916 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 32220 event pairs, 399 based on Foata normal form. 18/6600 useless extension candidates. Maximal degree in co-relation 29688. Up to 1340 conditions per place. [2024-11-13 13:25:28,603 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 204 selfloop transitions, 227 changer transitions 0/432 dead transitions. [2024-11-13 13:25:28,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 432 transitions, 4446 flow [2024-11-13 13:25:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 13:25:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-13 13:25:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 303 transitions. [2024-11-13 13:25:28,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41735537190082644 [2024-11-13 13:25:28,606 INFO L175 Difference]: Start difference. First operand has 107 places, 208 transitions, 2311 flow. Second operand 22 states and 303 transitions. [2024-11-13 13:25:28,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 432 transitions, 4446 flow [2024-11-13 13:25:28,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 432 transitions, 4327 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-11-13 13:25:28,892 INFO L231 Difference]: Finished difference. Result has 130 places, 307 transitions, 3677 flow [2024-11-13 13:25:28,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3677, PETRI_PLACES=130, PETRI_TRANSITIONS=307} [2024-11-13 13:25:28,893 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 95 predicate places. [2024-11-13 13:25:28,893 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 307 transitions, 3677 flow [2024-11-13 13:25:28,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 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) [2024-11-13 13:25:28,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:28,894 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:25:28,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:25:29,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:29,095 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:29,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:29,096 INFO L85 PathProgramCache]: Analyzing trace with hash -317450857, now seen corresponding path program 6 times [2024-11-13 13:25:29,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:29,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402861169] [2024-11-13 13:25:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:29,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:29,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:29,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402861169] [2024-11-13 13:25:29,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402861169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:29,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718259105] [2024-11-13 13:25:29,359 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:25:29,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:29,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:25:29,361 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:25:29,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:25:29,473 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-13 13:25:29,474 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:25:29,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:25:29,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:25:29,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:29,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:25:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:29,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718259105] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:29,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:25:29,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2024-11-13 13:25:29,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916071564] [2024-11-13 13:25:29,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:25:29,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:25:29,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:29,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:25:29,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:25:29,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-13 13:25:29,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 307 transitions, 3677 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-13 13:25:29,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:29,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-13 13:25:29,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:31,136 INFO L124 PetriNetUnfolderBase]: 3675/5273 cut-off events. [2024-11-13 13:25:31,137 INFO L125 PetriNetUnfolderBase]: For 30586/30586 co-relation queries the response was YES. [2024-11-13 13:25:31,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26450 conditions, 5273 events. 3675/5273 cut-off events. For 30586/30586 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 25955 event pairs, 342 based on Foata normal form. 14/5286 useless extension candidates. Maximal degree in co-relation 26393. Up to 1705 conditions per place. [2024-11-13 13:25:31,209 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 194 selfloop transitions, 150 changer transitions 0/346 dead transitions. [2024-11-13 13:25:31,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 346 transitions, 4510 flow [2024-11-13 13:25:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:25:31,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 13:25:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-11-13 13:25:31,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-13 13:25:31,211 INFO L175 Difference]: Start difference. First operand has 130 places, 307 transitions, 3677 flow. Second operand 8 states and 121 transitions. [2024-11-13 13:25:31,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 346 transitions, 4510 flow [2024-11-13 13:25:31,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 346 transitions, 4345 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-11-13 13:25:31,636 INFO L231 Difference]: Finished difference. Result has 133 places, 307 transitions, 3866 flow [2024-11-13 13:25:31,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3866, PETRI_PLACES=133, PETRI_TRANSITIONS=307} [2024-11-13 13:25:31,638 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 98 predicate places. [2024-11-13 13:25:31,638 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 307 transitions, 3866 flow [2024-11-13 13:25:31,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-13 13:25:31,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:31,638 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:25:31,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 13:25:31,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:31,843 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:31,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:31,843 INFO L85 PathProgramCache]: Analyzing trace with hash 352440728, now seen corresponding path program 1 times [2024-11-13 13:25:31,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:31,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056435067] [2024-11-13 13:25:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:31,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:31,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:31,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056435067] [2024-11-13 13:25:31,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056435067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:31,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957351713] [2024-11-13 13:25:31,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:31,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:31,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:25:31,993 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:25:31,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:25:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:32,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:25:32,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:25:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:32,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:25:32,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:32,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957351713] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:32,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:25:32,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-13 13:25:32,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994978362] [2024-11-13 13:25:32,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:25:32,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:25:32,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:32,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:25:32,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:25:32,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-13 13:25:32,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 307 transitions, 3866 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-13 13:25:32,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:32,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-13 13:25:32,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:33,292 INFO L124 PetriNetUnfolderBase]: 4204/6148 cut-off events. [2024-11-13 13:25:33,293 INFO L125 PetriNetUnfolderBase]: For 47346/47737 co-relation queries the response was YES. [2024-11-13 13:25:33,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31124 conditions, 6148 events. 4204/6148 cut-off events. For 47346/47737 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 32305 event pairs, 1189 based on Foata normal form. 462/6510 useless extension candidates. Maximal degree in co-relation 31068. Up to 2919 conditions per place. [2024-11-13 13:25:33,351 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 281 selfloop transitions, 43 changer transitions 0/389 dead transitions. [2024-11-13 13:25:33,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 389 transitions, 5674 flow [2024-11-13 13:25:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:25:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:25:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-13 13:25:33,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-13 13:25:33,357 INFO L175 Difference]: Start difference. First operand has 133 places, 307 transitions, 3866 flow. Second operand 5 states and 72 transitions. [2024-11-13 13:25:33,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 389 transitions, 5674 flow [2024-11-13 13:25:33,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 389 transitions, 5525 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-13 13:25:33,727 INFO L231 Difference]: Finished difference. Result has 135 places, 308 transitions, 4005 flow [2024-11-13 13:25:33,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3754, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4005, PETRI_PLACES=135, PETRI_TRANSITIONS=308} [2024-11-13 13:25:33,730 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 100 predicate places. [2024-11-13 13:25:33,731 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 308 transitions, 4005 flow [2024-11-13 13:25:33,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-13 13:25:33,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:33,732 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] [2024-11-13 13:25:33,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 13:25:33,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 13:25:33,936 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:33,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:33,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1004204782, now seen corresponding path program 1 times [2024-11-13 13:25:33,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:33,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318023994] [2024-11-13 13:25:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:33,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:34,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:34,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318023994] [2024-11-13 13:25:34,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318023994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:34,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163523423] [2024-11-13 13:25:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:34,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:34,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:25:34,747 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:25:34,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:25:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:34,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:25:34,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:25:35,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:25:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:35,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:25:35,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:25:35,183 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 19 treesize of output 16 [2024-11-13 13:25:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:35,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163523423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:25:35,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:25:35,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 17 [2024-11-13 13:25:35,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123515710] [2024-11-13 13:25:35,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:25:35,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 13:25:35,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:35,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 13:25:35,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:25:35,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-13 13:25:35,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 308 transitions, 4005 flow. Second operand has 18 states, 18 states have (on average 10.0) internal successors, (180), 18 states have internal predecessors, (180), 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) [2024-11-13 13:25:35,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:35,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-13 13:25:35,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:36,716 INFO L124 PetriNetUnfolderBase]: 4388/6593 cut-off events. [2024-11-13 13:25:36,716 INFO L125 PetriNetUnfolderBase]: For 48422/48682 co-relation queries the response was YES. [2024-11-13 13:25:36,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34867 conditions, 6593 events. 4388/6593 cut-off events. For 48422/48682 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 36859 event pairs, 347 based on Foata normal form. 137/6680 useless extension candidates. Maximal degree in co-relation 34809. Up to 4629 conditions per place. [2024-11-13 13:25:36,773 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 426 selfloop transitions, 135 changer transitions 1/629 dead transitions. [2024-11-13 13:25:36,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 629 transitions, 8656 flow [2024-11-13 13:25:36,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:25:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 13:25:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 260 transitions. [2024-11-13 13:25:36,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-11-13 13:25:36,776 INFO L175 Difference]: Start difference. First operand has 135 places, 308 transitions, 4005 flow. Second operand 16 states and 260 transitions. [2024-11-13 13:25:36,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 629 transitions, 8656 flow [2024-11-13 13:25:37,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 629 transitions, 8588 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 13:25:37,204 INFO L231 Difference]: Finished difference. Result has 151 places, 433 transitions, 6041 flow [2024-11-13 13:25:37,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3961, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6041, PETRI_PLACES=151, PETRI_TRANSITIONS=433} [2024-11-13 13:25:37,205 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 116 predicate places. [2024-11-13 13:25:37,205 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 433 transitions, 6041 flow [2024-11-13 13:25:37,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.0) internal successors, (180), 18 states have internal predecessors, (180), 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) [2024-11-13 13:25:37,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:37,206 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] [2024-11-13 13:25:37,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:25:37,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 13:25:37,410 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:37,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:37,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1339063067, now seen corresponding path program 1 times [2024-11-13 13:25:37,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:37,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554452256] [2024-11-13 13:25:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:37,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:38,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:38,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554452256] [2024-11-13 13:25:38,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554452256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:38,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069764281] [2024-11-13 13:25:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:38,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:38,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:25:38,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:25:38,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:25:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:38,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 13:25:38,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:25:38,505 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 [2024-11-13 13:25:38,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:25:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:38,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:25:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:39,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069764281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:25:39,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:25:39,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 23 [2024-11-13 13:25:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702294037] [2024-11-13 13:25:39,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:25:39,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 13:25:39,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:39,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 13:25:39,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2024-11-13 13:25:39,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-13 13:25:39,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 433 transitions, 6041 flow. Second operand has 24 states, 24 states have (on average 7.583333333333333) internal successors, (182), 24 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:25:39,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:39,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-13 13:25:39,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:44,065 INFO L124 PetriNetUnfolderBase]: 8449/12338 cut-off events. [2024-11-13 13:25:44,066 INFO L125 PetriNetUnfolderBase]: For 76714/76714 co-relation queries the response was YES. [2024-11-13 13:25:44,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67122 conditions, 12338 events. 8449/12338 cut-off events. For 76714/76714 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 70994 event pairs, 401 based on Foata normal form. 2/12339 useless extension candidates. Maximal degree in co-relation 65038. Up to 7751 conditions per place. [2024-11-13 13:25:44,201 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 982 selfloop transitions, 350 changer transitions 2/1337 dead transitions. [2024-11-13 13:25:44,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 1337 transitions, 18950 flow [2024-11-13 13:25:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 13:25:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-13 13:25:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 534 transitions. [2024-11-13 13:25:44,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-11-13 13:25:44,205 INFO L175 Difference]: Start difference. First operand has 151 places, 433 transitions, 6041 flow. Second operand 38 states and 534 transitions. [2024-11-13 13:25:44,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 1337 transitions, 18950 flow [2024-11-13 13:25:45,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 1337 transitions, 18727 flow, removed 84 selfloop flow, removed 4 redundant places. [2024-11-13 13:25:45,241 INFO L231 Difference]: Finished difference. Result has 203 places, 762 transitions, 11158 flow [2024-11-13 13:25:45,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5981, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=11158, PETRI_PLACES=203, PETRI_TRANSITIONS=762} [2024-11-13 13:25:45,242 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 168 predicate places. [2024-11-13 13:25:45,243 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 762 transitions, 11158 flow [2024-11-13 13:25:45,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.583333333333333) internal successors, (182), 24 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:25:45,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:45,243 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] [2024-11-13 13:25:45,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 13:25:45,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:25:45,444 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:45,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:45,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1237891957, now seen corresponding path program 2 times [2024-11-13 13:25:45,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:45,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60855712] [2024-11-13 13:25:45,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:45,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:46,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:46,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60855712] [2024-11-13 13:25:46,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60855712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:46,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468294181] [2024-11-13 13:25:46,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:25:46,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:46,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:25:46,313 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:25:46,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:25:46,434 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:25:46,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:25:46,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 13:25:46,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:25:46,477 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 [2024-11-13 13:25:46,777 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:25:46,778 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 17 treesize of output 15 [2024-11-13 13:25:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:46,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:25:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:47,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468294181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:25:47,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:25:47,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 25 [2024-11-13 13:25:47,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527464411] [2024-11-13 13:25:47,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:25:47,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 13:25:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 13:25:47,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2024-11-13 13:25:47,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-13 13:25:47,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 762 transitions, 11158 flow. Second operand has 26 states, 26 states have (on average 7.423076923076923) internal successors, (193), 26 states have internal predecessors, (193), 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) [2024-11-13 13:25:47,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:47,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-13 13:25:47,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:25:53,766 INFO L124 PetriNetUnfolderBase]: 11603/16989 cut-off events. [2024-11-13 13:25:53,766 INFO L125 PetriNetUnfolderBase]: For 130868/130868 co-relation queries the response was YES. [2024-11-13 13:25:53,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100430 conditions, 16989 events. 11603/16989 cut-off events. For 130868/130868 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 103944 event pairs, 740 based on Foata normal form. 2/16991 useless extension candidates. Maximal degree in co-relation 99242. Up to 10764 conditions per place. [2024-11-13 13:25:53,959 INFO L140 encePairwiseOnDemand]: 16/33 looper letters, 1139 selfloop transitions, 524 changer transitions 2/1668 dead transitions. [2024-11-13 13:25:53,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 1668 transitions, 26015 flow [2024-11-13 13:25:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 13:25:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-13 13:25:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 563 transitions. [2024-11-13 13:25:53,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4062049062049062 [2024-11-13 13:25:53,962 INFO L175 Difference]: Start difference. First operand has 203 places, 762 transitions, 11158 flow. Second operand 42 states and 563 transitions. [2024-11-13 13:25:53,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 1668 transitions, 26015 flow [2024-11-13 13:25:56,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 1668 transitions, 25980 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-13 13:25:56,645 INFO L231 Difference]: Finished difference. Result has 266 places, 1068 transitions, 17315 flow [2024-11-13 13:25:56,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11123, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=17315, PETRI_PLACES=266, PETRI_TRANSITIONS=1068} [2024-11-13 13:25:56,646 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 231 predicate places. [2024-11-13 13:25:56,646 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 1068 transitions, 17315 flow [2024-11-13 13:25:56,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.423076923076923) internal successors, (193), 26 states have internal predecessors, (193), 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) [2024-11-13 13:25:56,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:25:56,647 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] [2024-11-13 13:25:56,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:25:56,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 13:25:56,847 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:25:56,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:25:56,848 INFO L85 PathProgramCache]: Analyzing trace with hash -795561135, now seen corresponding path program 3 times [2024-11-13 13:25:56,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:25:56,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329180682] [2024-11-13 13:25:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:25:56,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:25:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:25:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:57,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:25:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329180682] [2024-11-13 13:25:57,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329180682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:25:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008337998] [2024-11-13 13:25:57,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:25:57,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:25:57,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:25:57,636 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:25:57,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:25:57,769 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 13:25:57,770 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:25:57,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 13:25:57,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:25:57,824 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 [2024-11-13 13:25:58,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:25:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:25:58,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:25:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:25:58,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008337998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:25:58,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:25:58,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 23 [2024-11-13 13:25:58,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58201935] [2024-11-13 13:25:58,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:25:58,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 13:25:58,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:25:58,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 13:25:58,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-11-13 13:25:58,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-13 13:25:58,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1068 transitions, 17315 flow. Second operand has 24 states, 24 states have (on average 7.375) internal successors, (177), 24 states have internal predecessors, (177), 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) [2024-11-13 13:25:58,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:25:58,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-13 13:25:58,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:26:07,985 INFO L124 PetriNetUnfolderBase]: 14461/21294 cut-off events. [2024-11-13 13:26:07,985 INFO L125 PetriNetUnfolderBase]: For 234169/234169 co-relation queries the response was YES. [2024-11-13 13:26:08,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141419 conditions, 21294 events. 14461/21294 cut-off events. For 234169/234169 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 135428 event pairs, 889 based on Foata normal form. 1/21295 useless extension candidates. Maximal degree in co-relation 140846. Up to 16485 conditions per place. [2024-11-13 13:26:08,285 INFO L140 encePairwiseOnDemand]: 16/33 looper letters, 1104 selfloop transitions, 596 changer transitions 1/1704 dead transitions. [2024-11-13 13:26:08,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 1704 transitions, 29774 flow [2024-11-13 13:26:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 13:26:08,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-13 13:26:08,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 480 transitions. [2024-11-13 13:26:08,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3931203931203931 [2024-11-13 13:26:08,287 INFO L175 Difference]: Start difference. First operand has 266 places, 1068 transitions, 17315 flow. Second operand 37 states and 480 transitions. [2024-11-13 13:26:08,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 1704 transitions, 29774 flow [2024-11-13 13:26:13,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 1704 transitions, 28876 flow, removed 227 selfloop flow, removed 11 redundant places. [2024-11-13 13:26:13,784 INFO L231 Difference]: Finished difference. Result has 307 places, 1336 transitions, 22306 flow [2024-11-13 13:26:13,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=16640, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22306, PETRI_PLACES=307, PETRI_TRANSITIONS=1336} [2024-11-13 13:26:13,785 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 272 predicate places. [2024-11-13 13:26:13,785 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 1336 transitions, 22306 flow [2024-11-13 13:26:13,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.375) internal successors, (177), 24 states have internal predecessors, (177), 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) [2024-11-13 13:26:13,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:26:13,786 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] [2024-11-13 13:26:13,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:26:13,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 13:26:13,986 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:26:13,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:26:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash -495300737, now seen corresponding path program 4 times [2024-11-13 13:26:13,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:26:13,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152045193] [2024-11-13 13:26:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:26:13,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:26:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:26:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:26:14,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:26:14,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152045193] [2024-11-13 13:26:14,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152045193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:26:14,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155246266] [2024-11-13 13:26:14,656 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:26:14,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:26:14,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:26:14,659 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:26:14,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:26:14,782 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:26:14,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:26:14,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 13:26:14,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:26:14,830 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 [2024-11-13 13:26:15,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:26:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:26:15,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:26:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:26:15,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155246266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:26:15,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:26:15,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2024-11-13 13:26:15,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080391174] [2024-11-13 13:26:15,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:26:15,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:26:15,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:26:15,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:26:15,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:26:15,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-13 13:26:15,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 1336 transitions, 22306 flow. Second operand has 25 states, 25 states have (on average 7.32) internal successors, (183), 25 states have internal predecessors, (183), 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) [2024-11-13 13:26:15,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:26:15,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-13 13:26:15,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:26:32,002 INFO L124 PetriNetUnfolderBase]: 20364/30047 cut-off events. [2024-11-13 13:26:32,003 INFO L125 PetriNetUnfolderBase]: For 384924/384924 co-relation queries the response was YES. [2024-11-13 13:26:32,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213936 conditions, 30047 events. 20364/30047 cut-off events. For 384924/384924 co-relation queries the response was YES. Maximal size of possible extension queue 1508. Compared 202496 event pairs, 828 based on Foata normal form. 2/30049 useless extension candidates. Maximal degree in co-relation 213405. Up to 18796 conditions per place. [2024-11-13 13:26:32,812 INFO L140 encePairwiseOnDemand]: 14/33 looper letters, 1320 selfloop transitions, 1613 changer transitions 2/2938 dead transitions. [2024-11-13 13:26:32,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 2938 transitions, 51217 flow [2024-11-13 13:26:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-13 13:26:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-11-13 13:26:32,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 1125 transitions. [2024-11-13 13:26:32,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40584415584415584 [2024-11-13 13:26:32,820 INFO L175 Difference]: Start difference. First operand has 307 places, 1336 transitions, 22306 flow. Second operand 84 states and 1125 transitions. [2024-11-13 13:26:32,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 2938 transitions, 51217 flow [2024-11-13 13:26:45,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 2938 transitions, 50926 flow, removed 142 selfloop flow, removed 3 redundant places. [2024-11-13 13:26:45,345 INFO L231 Difference]: Finished difference. Result has 419 places, 2358 transitions, 43483 flow [2024-11-13 13:26:45,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=22111, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=721, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=43483, PETRI_PLACES=419, PETRI_TRANSITIONS=2358} [2024-11-13 13:26:45,346 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 384 predicate places. [2024-11-13 13:26:45,346 INFO L471 AbstractCegarLoop]: Abstraction has has 419 places, 2358 transitions, 43483 flow [2024-11-13 13:26:45,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.32) internal successors, (183), 25 states have internal predecessors, (183), 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) [2024-11-13 13:26:45,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:26:45,347 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] [2024-11-13 13:26:45,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 13:26:45,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 13:26:45,548 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:26:45,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:26:45,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1450090542, now seen corresponding path program 2 times [2024-11-13 13:26:45,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:26:45,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905872375] [2024-11-13 13:26:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:26:45,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:26:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:26:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:26:46,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:26:46,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905872375] [2024-11-13 13:26:46,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905872375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:26:46,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239628885] [2024-11-13 13:26:46,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:26:46,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:26:46,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:26:46,037 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:26:46,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:26:46,159 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:26:46,159 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:26:46,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:26:46,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:26:46,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:26:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:26:46,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:26:46,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:26:46,382 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 23 treesize of output 16 [2024-11-13 13:26:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:26:46,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239628885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:26:46,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:26:46,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 16 [2024-11-13 13:26:46,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605184260] [2024-11-13 13:26:46,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:26:46,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 13:26:46,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:26:46,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 13:26:46,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:26:46,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-13 13:26:46,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 2358 transitions, 43483 flow. Second operand has 17 states, 17 states have (on average 10.058823529411764) internal successors, (171), 17 states have internal predecessors, (171), 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) [2024-11-13 13:26:46,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:26:46,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-13 13:26:46,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:27:04,860 INFO L124 PetriNetUnfolderBase]: 18177/27867 cut-off events. [2024-11-13 13:27:04,860 INFO L125 PetriNetUnfolderBase]: For 501321/502295 co-relation queries the response was YES. [2024-11-13 13:27:05,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231317 conditions, 27867 events. 18177/27867 cut-off events. For 501321/502295 co-relation queries the response was YES. Maximal size of possible extension queue 1578. Compared 201900 event pairs, 971 based on Foata normal form. 339/28004 useless extension candidates. Maximal degree in co-relation 230749. Up to 22210 conditions per place. [2024-11-13 13:27:05,612 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 1840 selfloop transitions, 363 changer transitions 1/2618 dead transitions. [2024-11-13 13:27:05,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 2618 transitions, 52182 flow [2024-11-13 13:27:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:27:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 13:27:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-11-13 13:27:05,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-13 13:27:05,878 INFO L175 Difference]: Start difference. First operand has 419 places, 2358 transitions, 43483 flow. Second operand 12 states and 192 transitions. [2024-11-13 13:27:05,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 2618 transitions, 52182 flow [2024-11-13 13:27:27,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 2618 transitions, 50205 flow, removed 747 selfloop flow, removed 15 redundant places. [2024-11-13 13:27:27,838 INFO L231 Difference]: Finished difference. Result has 419 places, 2453 transitions, 44288 flow [2024-11-13 13:27:27,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=41624, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2045, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=44288, PETRI_PLACES=419, PETRI_TRANSITIONS=2453} [2024-11-13 13:27:27,841 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 384 predicate places. [2024-11-13 13:27:27,841 INFO L471 AbstractCegarLoop]: Abstraction has has 419 places, 2453 transitions, 44288 flow [2024-11-13 13:27:27,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.058823529411764) internal successors, (171), 17 states have internal predecessors, (171), 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) [2024-11-13 13:27:27,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:27:27,842 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] [2024-11-13 13:27:27,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:27:28,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:27:28,047 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:27:28,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:28,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1953358749, now seen corresponding path program 5 times [2024-11-13 13:27:28,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:28,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443168285] [2024-11-13 13:27:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:28,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:28,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:28,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443168285] [2024-11-13 13:27:28,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443168285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:28,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516024243] [2024-11-13 13:27:28,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:27:28,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:28,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:28,843 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:28,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:27:28,970 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:27:28,971 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:27:28,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 13:27:28,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:29,014 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 [2024-11-13 13:27:29,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:27:29,339 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 17 treesize of output 15 [2024-11-13 13:27:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:29,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:27:29,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516024243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:29,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:29,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 25 [2024-11-13 13:27:29,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25503824] [2024-11-13 13:27:29,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:29,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 13:27:29,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 13:27:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2024-11-13 13:27:29,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-13 13:27:29,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 2453 transitions, 44288 flow. Second operand has 26 states, 26 states have (on average 7.423076923076923) internal successors, (193), 26 states have internal predecessors, (193), 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) [2024-11-13 13:27:29,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:27:29,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-13 13:27:29,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:27:57,485 INFO L124 PetriNetUnfolderBase]: 24416/36019 cut-off events. [2024-11-13 13:27:57,485 INFO L125 PetriNetUnfolderBase]: For 635149/635149 co-relation queries the response was YES. [2024-11-13 13:27:58,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298870 conditions, 36019 events. 24416/36019 cut-off events. For 635149/635149 co-relation queries the response was YES. Maximal size of possible extension queue 1858. Compared 249059 event pairs, 1345 based on Foata normal form. 2/36020 useless extension candidates. Maximal degree in co-relation 298126. Up to 23300 conditions per place. [2024-11-13 13:27:58,479 INFO L140 encePairwiseOnDemand]: 16/33 looper letters, 2108 selfloop transitions, 1389 changer transitions 2/3502 dead transitions. [2024-11-13 13:27:58,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 3502 transitions, 69230 flow [2024-11-13 13:27:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-13 13:27:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-13 13:27:58,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 598 transitions. [2024-11-13 13:27:58,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-11-13 13:27:58,481 INFO L175 Difference]: Start difference. First operand has 419 places, 2453 transitions, 44288 flow. Second operand 46 states and 598 transitions. [2024-11-13 13:27:58,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 3502 transitions, 69230 flow [2024-11-13 13:28:24,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 3502 transitions, 68491 flow, removed 163 selfloop flow, removed 5 redundant places. [2024-11-13 13:28:24,266 INFO L231 Difference]: Finished difference. Result has 484 places, 2933 transitions, 58311 flow [2024-11-13 13:28:24,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=43629, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=972, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=58311, PETRI_PLACES=484, PETRI_TRANSITIONS=2933} [2024-11-13 13:28:24,269 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 449 predicate places. [2024-11-13 13:28:24,269 INFO L471 AbstractCegarLoop]: Abstraction has has 484 places, 2933 transitions, 58311 flow [2024-11-13 13:28:24,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.423076923076923) internal successors, (193), 26 states have internal predecessors, (193), 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) [2024-11-13 13:28:24,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:28:24,269 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] [2024-11-13 13:28:24,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 13:28:24,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 13:28:24,470 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:28:24,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:24,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1762293684, now seen corresponding path program 3 times [2024-11-13 13:28:24,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:24,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194110802] [2024-11-13 13:28:24,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:24,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:28:24,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:24,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194110802] [2024-11-13 13:28:24,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194110802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:28:24,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071268216] [2024-11-13 13:28:24,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:28:24,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:24,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:24,976 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:28:24,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458b90dd-6f13-4a39-81ba-7bf6d726f6db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:28:25,108 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 13:28:25,108 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:28:25,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 13:28:25,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:28:25,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:28:25,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:28:25,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:28:25,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:28:25,308 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 23 treesize of output 16 [2024-11-13 13:28:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:28:25,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071268216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:28:25,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:28:25,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 13 [2024-11-13 13:28:25,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57830038] [2024-11-13 13:28:25,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:28:25,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:28:25,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:28:25,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:28:25,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-13 13:28:25,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 2933 transitions, 58311 flow. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 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) [2024-11-13 13:28:25,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:28:25,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-13 13:28:25,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand