./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:09:38,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:09:38,649 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:09:38,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:09:38,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:09:38,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:09:38,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:09:38,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:09:38,676 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:09:38,676 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:09:38,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:09:38,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:09:38,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:09:38,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:09:38,676 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:09:38,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:09:38,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:09:38,677 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:09:38,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:09:38,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:09:38,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:09:38,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:09:38,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:09:38,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:09:38,678 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:09:38,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:09:38,678 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:09:38,678 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:09:38,678 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:09:38,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:09:38,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:09:38,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:09:38,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:09:38,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:09:38,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:09:38,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:09:38,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:09:38,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:09:38,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:09:38,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:09:38,679 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:09:38,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:09:38,680 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:09:38,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:09:38,680 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:09:38,680 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:09:38,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:09:38,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:09:38,680 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_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2024-12-02 08:09:38,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:09:38,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:09:38,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:09:38,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:09:38,894 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:09:38,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-12-02 08:09:41,491 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/data/9a01a3cd1/4fc97b87c9284266a107da7f281296ca/FLAG57189f59b [2024-12-02 08:09:41,708 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:09:41,709 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-12-02 08:09:41,715 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/data/9a01a3cd1/4fc97b87c9284266a107da7f281296ca/FLAG57189f59b [2024-12-02 08:09:42,058 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/data/9a01a3cd1/4fc97b87c9284266a107da7f281296ca [2024-12-02 08:09:42,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:09:42,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:09:42,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:09:42,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:09:42,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:09:42,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f47084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42, skipping insertion in model container [2024-12-02 08:09:42,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,079 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:09:42,229 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_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2664,2677] [2024-12-02 08:09:42,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:09:42,241 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:09:42,260 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_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2664,2677] [2024-12-02 08:09:42,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:09:42,274 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:09:42,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42 WrapperNode [2024-12-02 08:09:42,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:09:42,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:09:42,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:09:42,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:09:42,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,303 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 96 [2024-12-02 08:09:42,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:09:42,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:09:42,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:09:42,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:09:42,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,314 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,326 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 08:09:42,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,330 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:09:42,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:09:42,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:09:42,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:09:42,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (1/1) ... [2024-12-02 08:09:42,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:09:42,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:09:42,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:09:42,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:09:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:09:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 08:09:42,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 08:09:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 08:09:42,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 08:09:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 08:09:42,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 08:09:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 08:09:42,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 08:09:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:09:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 08:09:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 08:09:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:09:42,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:09:42,396 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 08:09:42,471 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:09:42,473 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:09:42,645 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 08:09:42,645 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:09:42,765 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:09:42,765 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 08:09:42,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:09:42 BoogieIcfgContainer [2024-12-02 08:09:42,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:09:42,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:09:42,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:09:42,772 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:09:42,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:09:42" (1/3) ... [2024-12-02 08:09:42,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b4e6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:09:42, skipping insertion in model container [2024-12-02 08:09:42,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:42" (2/3) ... [2024-12-02 08:09:42,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b4e6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:09:42, skipping insertion in model container [2024-12-02 08:09:42,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:09:42" (3/3) ... [2024-12-02 08:09:42,774 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-12-02 08:09:42,788 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:09:42,789 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-mult-4.wvr.c that has 5 procedures, 37 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-12-02 08:09:42,789 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 08:09:42,843 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 08:09:42,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-12-02 08:09:42,901 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-12-02 08:09:42,902 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 08:09:42,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-12-02 08:09:42,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-12-02 08:09:42,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-12-02 08:09:42,915 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:09:42,926 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;@4ffbff6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:09:42,926 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 08:09:42,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:09:42,947 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-12-02 08:09:42,947 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 08:09:42,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:09:42,948 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:09:42,948 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:09:42,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:42,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1673854268, now seen corresponding path program 1 times [2024-12-02 08:09:42,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:42,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255754143] [2024-12-02 08:09:42,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:42,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:09:43,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:43,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255754143] [2024-12-02 08:09:43,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255754143] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:43,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:43,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:09:43,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471009490] [2024-12-02 08:09:43,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:43,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:09:43,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:43,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:09:43,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:09:43,326 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-12-02 08:09:43,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:43,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:09:43,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-12-02 08:09:43,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:09:43,863 INFO L124 PetriNetUnfolderBase]: 3042/4202 cut-off events. [2024-12-02 08:09:43,863 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2024-12-02 08:09:43,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8602 conditions, 4202 events. 3042/4202 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 18197 event pairs, 763 based on Foata normal form. 125/4317 useless extension candidates. Maximal degree in co-relation 7596. Up to 3203 conditions per place. [2024-12-02 08:09:43,890 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-12-02 08:09:43,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2024-12-02 08:09:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:09:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:09:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-12-02 08:09:43,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-12-02 08:09:43,904 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-12-02 08:09:43,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2024-12-02 08:09:43,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-12-02 08:09:43,919 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-12-02 08:09:43,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-12-02 08:09:43,925 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-12-02 08:09:43,925 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-12-02 08:09:43,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:43,925 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:09:43,925 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:09:43,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:09:43,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:09:43,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:43,926 INFO L85 PathProgramCache]: Analyzing trace with hash -769967416, now seen corresponding path program 1 times [2024-12-02 08:09:43,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:43,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378523276] [2024-12-02 08:09:43,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:43,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:09:44,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378523276] [2024-12-02 08:09:44,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378523276] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:44,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:44,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:09:44,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045066528] [2024-12-02 08:09:44,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:44,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:09:44,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:44,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:09:44,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:09:44,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:09:44,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:44,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:09:44,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:09:44,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:09:45,552 INFO L124 PetriNetUnfolderBase]: 11938/15928 cut-off events. [2024-12-02 08:09:45,552 INFO L125 PetriNetUnfolderBase]: For 925/925 co-relation queries the response was YES. [2024-12-02 08:09:45,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33792 conditions, 15928 events. 11938/15928 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 80372 event pairs, 4214 based on Foata normal form. 0/12560 useless extension candidates. Maximal degree in co-relation 9332. Up to 8506 conditions per place. [2024-12-02 08:09:45,642 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-12-02 08:09:45,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 418 flow [2024-12-02 08:09:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:09:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 08:09:45,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-12-02 08:09:45,644 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-12-02 08:09:45,644 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 129 transitions. [2024-12-02 08:09:45,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 418 flow [2024-12-02 08:09:45,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 08:09:45,646 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2024-12-02 08:09:45,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-12-02 08:09:45,647 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-12-02 08:09:45,647 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2024-12-02 08:09:45,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:45,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:09:45,647 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:09:45,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:09:45,648 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:09:45,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:45,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2016704284, now seen corresponding path program 2 times [2024-12-02 08:09:45,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:45,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899221925] [2024-12-02 08:09:45,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:09:45,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:45,673 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:09:45,673 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:09:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:09:45,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:45,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899221925] [2024-12-02 08:09:45,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899221925] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:45,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:45,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:09:45,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423179955] [2024-12-02 08:09:45,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:45,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:09:45,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:45,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:09:45,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:09:45,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:09:45,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:45,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:09:45,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:09:45,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:09:46,905 INFO L124 PetriNetUnfolderBase]: 17588/23615 cut-off events. [2024-12-02 08:09:46,905 INFO L125 PetriNetUnfolderBase]: For 10623/10701 co-relation queries the response was YES. [2024-12-02 08:09:46,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62145 conditions, 23615 events. 17588/23615 cut-off events. For 10623/10701 co-relation queries the response was YES. Maximal size of possible extension queue 995. Compared 127437 event pairs, 3092 based on Foata normal form. 682/23877 useless extension candidates. Maximal degree in co-relation 35465. Up to 13004 conditions per place. [2024-12-02 08:09:46,999 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 85 selfloop transitions, 8 changer transitions 2/100 dead transitions. [2024-12-02 08:09:47,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 100 transitions, 538 flow [2024-12-02 08:09:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:09:47,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:09:47,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-12-02 08:09:47,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-12-02 08:09:47,001 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 4 states and 106 transitions. [2024-12-02 08:09:47,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 100 transitions, 538 flow [2024-12-02 08:09:47,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 100 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:09:47,015 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 251 flow [2024-12-02 08:09:47,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2024-12-02 08:09:47,016 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2024-12-02 08:09:47,016 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 251 flow [2024-12-02 08:09:47,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:47,016 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:09:47,016 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:09:47,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:09:47,016 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:09:47,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:47,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1988588238, now seen corresponding path program 1 times [2024-12-02 08:09:47,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:47,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044828564] [2024-12-02 08:09:47,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:47,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:09:47,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:47,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044828564] [2024-12-02 08:09:47,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044828564] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:47,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:47,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:09:47,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438651567] [2024-12-02 08:09:47,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:47,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:09:47,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:47,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:09:47,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:09:47,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:09:47,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:47,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:09:47,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:09:47,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:09:48,733 INFO L124 PetriNetUnfolderBase]: 19378/26039 cut-off events. [2024-12-02 08:09:48,733 INFO L125 PetriNetUnfolderBase]: For 26707/26729 co-relation queries the response was YES. [2024-12-02 08:09:48,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76682 conditions, 26039 events. 19378/26039 cut-off events. For 26707/26729 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 142570 event pairs, 5695 based on Foata normal form. 672/26138 useless extension candidates. Maximal degree in co-relation 42299. Up to 11363 conditions per place. [2024-12-02 08:09:48,846 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 86 selfloop transitions, 7 changer transitions 17/115 dead transitions. [2024-12-02 08:09:48,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 115 transitions, 698 flow [2024-12-02 08:09:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:09:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 08:09:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-12-02 08:09:48,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-12-02 08:09:48,848 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 251 flow. Second operand 5 states and 130 transitions. [2024-12-02 08:09:48,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 115 transitions, 698 flow [2024-12-02 08:09:48,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 115 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:09:48,866 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 296 flow [2024-12-02 08:09:48,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-12-02 08:09:48,867 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2024-12-02 08:09:48,867 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 296 flow [2024-12-02 08:09:48,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:48,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:09:48,867 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:09:48,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:09:48,868 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:09:48,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1213499480, now seen corresponding path program 3 times [2024-12-02 08:09:48,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:48,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033527358] [2024-12-02 08:09:48,869 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:09:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:48,886 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 08:09:48,887 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:09:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:09:48,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:48,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033527358] [2024-12-02 08:09:48,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033527358] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:48,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:48,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:09:48,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277087998] [2024-12-02 08:09:48,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:48,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:09:48,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:48,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:09:48,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:09:48,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:09:48,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:48,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:09:48,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:09:48,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:09:50,664 INFO L124 PetriNetUnfolderBase]: 24003/32446 cut-off events. [2024-12-02 08:09:50,664 INFO L125 PetriNetUnfolderBase]: For 56027/56101 co-relation queries the response was YES. [2024-12-02 08:09:50,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109166 conditions, 32446 events. 24003/32446 cut-off events. For 56027/56101 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 183562 event pairs, 7197 based on Foata normal form. 645/32321 useless extension candidates. Maximal degree in co-relation 43013. Up to 16193 conditions per place. [2024-12-02 08:09:50,811 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 80 selfloop transitions, 17 changer transitions 2/104 dead transitions. [2024-12-02 08:09:50,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 104 transitions, 741 flow [2024-12-02 08:09:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:09:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:09:50,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-12-02 08:09:50,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-12-02 08:09:50,812 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 296 flow. Second operand 4 states and 104 transitions. [2024-12-02 08:09:50,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 104 transitions, 741 flow [2024-12-02 08:09:50,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 104 transitions, 703 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-12-02 08:09:50,906 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 410 flow [2024-12-02 08:09:50,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=410, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-12-02 08:09:50,907 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2024-12-02 08:09:50,907 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 410 flow [2024-12-02 08:09:50,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:50,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:09:50,907 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:09:50,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:09:50,907 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:09:50,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:50,908 INFO L85 PathProgramCache]: Analyzing trace with hash 314532002, now seen corresponding path program 2 times [2024-12-02 08:09:50,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:50,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428117680] [2024-12-02 08:09:50,908 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:09:50,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:50,930 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:09:50,931 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:09:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:09:51,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:51,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428117680] [2024-12-02 08:09:51,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428117680] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:51,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:51,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:09:51,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275288339] [2024-12-02 08:09:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:51,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:09:51,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:51,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:09:51,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:09:51,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:09:51,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 410 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:51,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:09:51,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:09:51,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:09:52,947 INFO L124 PetriNetUnfolderBase]: 23940/32308 cut-off events. [2024-12-02 08:09:52,947 INFO L125 PetriNetUnfolderBase]: For 67750/67820 co-relation queries the response was YES. [2024-12-02 08:09:53,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114882 conditions, 32308 events. 23940/32308 cut-off events. For 67750/67820 co-relation queries the response was YES. Maximal size of possible extension queue 1222. Compared 180535 event pairs, 7838 based on Foata normal form. 66/31640 useless extension candidates. Maximal degree in co-relation 45467. Up to 18727 conditions per place. [2024-12-02 08:09:53,235 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 69 selfloop transitions, 8 changer transitions 16/98 dead transitions. [2024-12-02 08:09:53,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 744 flow [2024-12-02 08:09:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:09:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:09:53,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-12-02 08:09:53,236 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-12-02 08:09:53,236 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 410 flow. Second operand 4 states and 101 transitions. [2024-12-02 08:09:53,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 744 flow [2024-12-02 08:09:53,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 723 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-12-02 08:09:53,353 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 403 flow [2024-12-02 08:09:53,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=403, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-12-02 08:09:53,354 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2024-12-02 08:09:53,354 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 403 flow [2024-12-02 08:09:53,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:53,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:09:53,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:09:53,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:09:53,354 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:09:53,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:53,354 INFO L85 PathProgramCache]: Analyzing trace with hash -577972391, now seen corresponding path program 1 times [2024-12-02 08:09:53,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:53,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655707526] [2024-12-02 08:09:53,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:53,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:09:53,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:53,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655707526] [2024-12-02 08:09:53,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655707526] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:09:53,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936555213] [2024-12-02 08:09:53,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:53,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:09:53,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:09:53,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:09:53,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:09:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:53,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:09:53,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:09:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:09:53,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:09:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:09:53,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936555213] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:09:53,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:09:53,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 8 [2024-12-02 08:09:53,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119057720] [2024-12-02 08:09:53,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:53,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:09:53,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:53,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:09:53,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:09:53,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:09:53,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:53,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:09:53,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:09:53,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:09:55,260 INFO L124 PetriNetUnfolderBase]: 25452/34362 cut-off events. [2024-12-02 08:09:55,261 INFO L125 PetriNetUnfolderBase]: For 81504/81628 co-relation queries the response was YES. [2024-12-02 08:09:55,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122763 conditions, 34362 events. 25452/34362 cut-off events. For 81504/81628 co-relation queries the response was YES. Maximal size of possible extension queue 1316. Compared 194188 event pairs, 5240 based on Foata normal form. 834/34492 useless extension candidates. Maximal degree in co-relation 55979. Up to 16639 conditions per place. [2024-12-02 08:09:55,398 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 84 selfloop transitions, 13 changer transitions 3/105 dead transitions. [2024-12-02 08:09:55,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 105 transitions, 867 flow [2024-12-02 08:09:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:09:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:09:55,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-12-02 08:09:55,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-12-02 08:09:55,399 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 403 flow. Second operand 4 states and 102 transitions. [2024-12-02 08:09:55,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 105 transitions, 867 flow [2024-12-02 08:09:55,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 105 transitions, 831 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-12-02 08:09:55,511 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 453 flow [2024-12-02 08:09:55,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=453, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2024-12-02 08:09:55,512 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2024-12-02 08:09:55,512 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 453 flow [2024-12-02 08:09:55,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:55,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:09:55,512 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:09:55,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:09:55,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 08:09:55,713 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:09:55,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:55,714 INFO L85 PathProgramCache]: Analyzing trace with hash 553302725, now seen corresponding path program 1 times [2024-12-02 08:09:55,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:55,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80502382] [2024-12-02 08:09:55,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:55,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:09:55,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:55,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80502382] [2024-12-02 08:09:55,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80502382] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:55,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:55,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:09:55,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402684173] [2024-12-02 08:09:55,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:55,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:09:55,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:55,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:09:55,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:09:55,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:09:55,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 453 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:55,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:09:55,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:09:55,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:09:58,603 INFO L124 PetriNetUnfolderBase]: 31221/41889 cut-off events. [2024-12-02 08:09:58,603 INFO L125 PetriNetUnfolderBase]: For 126304/126320 co-relation queries the response was YES. [2024-12-02 08:09:58,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160698 conditions, 41889 events. 31221/41889 cut-off events. For 126304/126320 co-relation queries the response was YES. Maximal size of possible extension queue 1577. Compared 240007 event pairs, 8708 based on Foata normal form. 252/41315 useless extension candidates. Maximal degree in co-relation 71792. Up to 20472 conditions per place. [2024-12-02 08:09:58,766 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 130 selfloop transitions, 15 changer transitions 3/153 dead transitions. [2024-12-02 08:09:58,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 153 transitions, 1486 flow [2024-12-02 08:09:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:09:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 08:09:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-12-02 08:09:58,767 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-12-02 08:09:58,767 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 453 flow. Second operand 5 states and 126 transitions. [2024-12-02 08:09:58,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 153 transitions, 1486 flow [2024-12-02 08:09:58,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 153 transitions, 1449 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:09:58,854 INFO L231 Difference]: Finished difference. Result has 66 places, 71 transitions, 578 flow [2024-12-02 08:09:58,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=66, PETRI_TRANSITIONS=71} [2024-12-02 08:09:58,854 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2024-12-02 08:09:58,854 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 71 transitions, 578 flow [2024-12-02 08:09:58,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:09:58,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:09:58,854 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:09:58,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:09:58,855 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:09:58,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:58,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1746369823, now seen corresponding path program 2 times [2024-12-02 08:09:58,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:58,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319700790] [2024-12-02 08:09:58,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:09:58,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:58,868 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 08:09:58,868 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:09:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:09:58,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:58,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319700790] [2024-12-02 08:09:58,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319700790] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:58,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:58,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:09:58,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725994674] [2024-12-02 08:09:58,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:58,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:09:58,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:58,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:09:58,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:09:58,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:09:58,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-12-02 08:09:58,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:09:58,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:09:58,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:10:01,898 INFO L124 PetriNetUnfolderBase]: 37917/51398 cut-off events. [2024-12-02 08:10:01,898 INFO L125 PetriNetUnfolderBase]: For 198329/198365 co-relation queries the response was YES. [2024-12-02 08:10:02,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216868 conditions, 51398 events. 37917/51398 cut-off events. For 198329/198365 co-relation queries the response was YES. Maximal size of possible extension queue 2013. Compared 311936 event pairs, 5428 based on Foata normal form. 2317/52692 useless extension candidates. Maximal degree in co-relation 102477. Up to 18470 conditions per place. [2024-12-02 08:10:02,411 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 143 selfloop transitions, 30 changer transitions 6/184 dead transitions. [2024-12-02 08:10:02,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 184 transitions, 1734 flow [2024-12-02 08:10:02,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:10:02,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:10:02,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-12-02 08:10:02,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-12-02 08:10:02,412 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 578 flow. Second operand 7 states and 180 transitions. [2024-12-02 08:10:02,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 184 transitions, 1734 flow [2024-12-02 08:10:02,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 184 transitions, 1717 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 08:10:02,720 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 804 flow [2024-12-02 08:10:02,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=804, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-12-02 08:10:02,721 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-12-02 08:10:02,721 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 804 flow [2024-12-02 08:10:02,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-12-02 08:10:02,721 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:10:02,721 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:10:02,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:10:02,722 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:10:02,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:10:02,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1191669365, now seen corresponding path program 3 times [2024-12-02 08:10:02,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:10:02,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900988841] [2024-12-02 08:10:02,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:10:02,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:10:02,738 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 08:10:02,738 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:10:02,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:10:02,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:10:02,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900988841] [2024-12-02 08:10:02,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900988841] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:10:02,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:10:02,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:10:02,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353481456] [2024-12-02 08:10:02,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:10:02,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:10:02,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:10:02,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:10:02,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:10:02,860 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:10:02,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 804 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:10:02,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:10:02,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:10:02,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:10:07,307 INFO L124 PetriNetUnfolderBase]: 47971/65088 cut-off events. [2024-12-02 08:10:07,307 INFO L125 PetriNetUnfolderBase]: For 334538/334628 co-relation queries the response was YES. [2024-12-02 08:10:07,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294607 conditions, 65088 events. 47971/65088 cut-off events. For 334538/334628 co-relation queries the response was YES. Maximal size of possible extension queue 2391. Compared 400891 event pairs, 15652 based on Foata normal form. 784/64412 useless extension candidates. Maximal degree in co-relation 158986. Up to 29280 conditions per place. [2024-12-02 08:10:07,624 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 135 selfloop transitions, 11 changer transitions 13/164 dead transitions. [2024-12-02 08:10:07,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 164 transitions, 1831 flow [2024-12-02 08:10:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:10:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 08:10:07,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-12-02 08:10:07,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-12-02 08:10:07,626 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 804 flow. Second operand 5 states and 120 transitions. [2024-12-02 08:10:07,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 164 transitions, 1831 flow [2024-12-02 08:10:09,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 164 transitions, 1760 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-12-02 08:10:09,142 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 876 flow [2024-12-02 08:10:09,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=876, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-12-02 08:10:09,143 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-12-02 08:10:09,143 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 876 flow [2024-12-02 08:10:09,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:10:09,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:10:09,143 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:10:09,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:10:09,143 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:10:09,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:10:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash -622256695, now seen corresponding path program 4 times [2024-12-02 08:10:09,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:10:09,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721989492] [2024-12-02 08:10:09,144 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 08:10:09,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:10:09,158 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 08:10:09,158 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:10:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:10:09,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:10:09,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721989492] [2024-12-02 08:10:09,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721989492] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:10:09,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856391703] [2024-12-02 08:10:09,253 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 08:10:09,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:10:09,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:10:09,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:10:09,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:10:09,326 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 08:10:09,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:10:09,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:10:09,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:10:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:10:09,378 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:10:09,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856391703] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:10:09,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:10:09,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2024-12-02 08:10:09,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326207566] [2024-12-02 08:10:09,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:10:09,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:10:09,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:10:09,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:10:09,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:10:09,389 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:10:09,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 876 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:10:09,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:10:09,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:10:09,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:10:15,687 INFO L124 PetriNetUnfolderBase]: 65238/87686 cut-off events. [2024-12-02 08:10:15,687 INFO L125 PetriNetUnfolderBase]: For 611359/611555 co-relation queries the response was YES. [2024-12-02 08:10:15,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435219 conditions, 87686 events. 65238/87686 cut-off events. For 611359/611555 co-relation queries the response was YES. Maximal size of possible extension queue 3601. Compared 554724 event pairs, 16721 based on Foata normal form. 1236/85794 useless extension candidates. Maximal degree in co-relation 178404. Up to 37335 conditions per place. [2024-12-02 08:10:16,129 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 184 selfloop transitions, 19 changer transitions 3/211 dead transitions. [2024-12-02 08:10:16,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 211 transitions, 2688 flow [2024-12-02 08:10:16,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:10:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 08:10:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-12-02 08:10:16,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.595 [2024-12-02 08:10:16,131 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 876 flow. Second operand 5 states and 119 transitions. [2024-12-02 08:10:16,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 211 transitions, 2688 flow [2024-12-02 08:10:17,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 211 transitions, 2495 flow, removed 73 selfloop flow, removed 3 redundant places. [2024-12-02 08:10:17,759 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 984 flow [2024-12-02 08:10:17,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=984, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2024-12-02 08:10:17,760 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2024-12-02 08:10:17,760 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 984 flow [2024-12-02 08:10:17,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:10:17,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:10:17,760 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:10:17,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:10:17,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ded3f5b-e209-4889-bf16-51b7f03ea9d7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:10:17,960 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:10:17,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:10:17,961 INFO L85 PathProgramCache]: Analyzing trace with hash -104059753, now seen corresponding path program 5 times [2024-12-02 08:10:17,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:10:17,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965594937] [2024-12-02 08:10:17,961 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:10:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:10:17,972 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 08:10:17,972 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:10:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:10:18,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:10:18,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965594937] [2024-12-02 08:10:18,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965594937] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:10:18,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:10:18,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:10:18,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330449247] [2024-12-02 08:10:18,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:10:18,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:10:18,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:10:18,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:10:18,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:10:18,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:10:18,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 984 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-12-02 08:10:18,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:10:18,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:10:18,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:10:24,092 INFO L124 PetriNetUnfolderBase]: 64011/86305 cut-off events. [2024-12-02 08:10:24,092 INFO L125 PetriNetUnfolderBase]: For 518443/518690 co-relation queries the response was YES. [2024-12-02 08:10:24,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417257 conditions, 86305 events. 64011/86305 cut-off events. For 518443/518690 co-relation queries the response was YES. Maximal size of possible extension queue 3539. Compared 547631 event pairs, 20640 based on Foata normal form. 1459/85119 useless extension candidates. Maximal degree in co-relation 267981. Up to 40848 conditions per place. [2024-12-02 08:10:24,835 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 190 selfloop transitions, 54 changer transitions 4/253 dead transitions. [2024-12-02 08:10:24,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 253 transitions, 3178 flow [2024-12-02 08:10:24,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:10:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:10:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-12-02 08:10:24,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-12-02 08:10:24,836 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 984 flow. Second operand 6 states and 146 transitions. [2024-12-02 08:10:24,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 253 transitions, 3178 flow [2024-12-02 08:10:26,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 253 transitions, 3117 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 08:10:26,148 INFO L231 Difference]: Finished difference. Result has 90 places, 129 transitions, 1756 flow [2024-12-02 08:10:26,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1756, PETRI_PLACES=90, PETRI_TRANSITIONS=129} [2024-12-02 08:10:26,149 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 46 predicate places. [2024-12-02 08:10:26,149 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 129 transitions, 1756 flow [2024-12-02 08:10:26,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-12-02 08:10:26,149 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:10:26,149 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:10:26,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:10:26,150 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:10:26,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:10:26,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1612495367, now seen corresponding path program 1 times [2024-12-02 08:10:26,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:10:26,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150723846] [2024-12-02 08:10:26,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:10:26,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:10:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:10:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:10:26,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:10:26,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150723846] [2024-12-02 08:10:26,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150723846] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:10:26,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:10:26,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:10:26,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778594468] [2024-12-02 08:10:26,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:10:26,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:10:26,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:10:26,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:10:26,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:10:26,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:10:26,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 129 transitions, 1756 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:10:26,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:10:26,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:10:26,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:10:36,093 INFO L124 PetriNetUnfolderBase]: 85778/114473 cut-off events. [2024-12-02 08:10:36,093 INFO L125 PetriNetUnfolderBase]: For 1010559/1010753 co-relation queries the response was YES. [2024-12-02 08:10:36,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626353 conditions, 114473 events. 85778/114473 cut-off events. For 1010559/1010753 co-relation queries the response was YES. Maximal size of possible extension queue 4531. Compared 733870 event pairs, 12910 based on Foata normal form. 2826/113286 useless extension candidates. Maximal degree in co-relation 397041. Up to 38102 conditions per place. [2024-12-02 08:10:37,076 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 207 selfloop transitions, 64 changer transitions 2/278 dead transitions. [2024-12-02 08:10:37,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 278 transitions, 3911 flow [2024-12-02 08:10:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:10:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:10:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-12-02 08:10:37,078 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6107142857142858 [2024-12-02 08:10:37,078 INFO L175 Difference]: Start difference. First operand has 90 places, 129 transitions, 1756 flow. Second operand 7 states and 171 transitions. [2024-12-02 08:10:37,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 278 transitions, 3911 flow [2024-12-02 08:10:44,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 278 transitions, 3561 flow, removed 166 selfloop flow, removed 1 redundant places. [2024-12-02 08:10:44,171 INFO L231 Difference]: Finished difference. Result has 97 places, 148 transitions, 2010 flow [2024-12-02 08:10:44,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2010, PETRI_PLACES=97, PETRI_TRANSITIONS=148} [2024-12-02 08:10:44,172 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2024-12-02 08:10:44,172 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 148 transitions, 2010 flow [2024-12-02 08:10:44,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:10:44,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:10:44,172 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:10:44,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:10:44,173 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 2 more)] === [2024-12-02 08:10:44,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:10:44,173 INFO L85 PathProgramCache]: Analyzing trace with hash -960306297, now seen corresponding path program 2 times [2024-12-02 08:10:44,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:10:44,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579890950] [2024-12-02 08:10:44,174 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:10:44,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:10:44,192 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 08:10:44,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:10:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:10:44,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:10:44,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579890950] [2024-12-02 08:10:44,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579890950] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:10:44,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:10:44,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:10:44,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659790182] [2024-12-02 08:10:44,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:10:44,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:10:44,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:10:44,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:10:44,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:10:44,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:10:44,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 148 transitions, 2010 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:10:44,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:10:44,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:10:44,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:10:59,003 INFO L124 PetriNetUnfolderBase]: 116120/154339 cut-off events. [2024-12-02 08:10:59,003 INFO L125 PetriNetUnfolderBase]: For 1533106/1533528 co-relation queries the response was YES. [2024-12-02 08:10:59,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872769 conditions, 154339 events. 116120/154339 cut-off events. For 1533106/1533528 co-relation queries the response was YES. Maximal size of possible extension queue 5296. Compared 997701 event pairs, 38104 based on Foata normal form. 2322/151298 useless extension candidates. Maximal degree in co-relation 538442. Up to 72469 conditions per place. [2024-12-02 08:11:00,184 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 257 selfloop transitions, 15 changer transitions 18/295 dead transitions. [2024-12-02 08:11:00,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 295 transitions, 4539 flow [2024-12-02 08:11:00,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:11:00,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 08:11:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-12-02 08:11:00,185 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-12-02 08:11:00,185 INFO L175 Difference]: Start difference. First operand has 97 places, 148 transitions, 2010 flow. Second operand 5 states and 118 transitions. [2024-12-02 08:11:00,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 295 transitions, 4539 flow [2024-12-02 08:11:16,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 295 transitions, 4483 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:11:16,475 INFO L231 Difference]: Finished difference. Result has 102 places, 151 transitions, 2194 flow [2024-12-02 08:11:16,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2194, PETRI_PLACES=102, PETRI_TRANSITIONS=151} [2024-12-02 08:11:16,475 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 58 predicate places. [2024-12-02 08:11:16,475 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 151 transitions, 2194 flow [2024-12-02 08:11:16,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:11:16,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:11:16,476 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:11:16,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:11:16,476 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 2 more)] === [2024-12-02 08:11:16,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:11:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1473730617, now seen corresponding path program 3 times [2024-12-02 08:11:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:11:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506374348] [2024-12-02 08:11:16,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:11:16,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:11:16,487 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 08:11:16,487 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:11:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:11:16,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:11:16,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506374348] [2024-12-02 08:11:16,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506374348] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:11:16,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:11:16,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:11:16,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151870965] [2024-12-02 08:11:16,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:11:16,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:11:16,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:11:16,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:11:16,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:11:16,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-12-02 08:11:16,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 151 transitions, 2194 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:11:16,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:11:16,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-12-02 08:11:16,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand