./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:07:42,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:07:42,632 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:07:42,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:07:42,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:07:42,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:07:42,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:07:42,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:07:42,676 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:07:42,676 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:07:42,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:07:42,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:07:42,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:07:42,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:07:42,677 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:07:42,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:07:42,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:07:42,679 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:07:42,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:07:42,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:07:42,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:07:42,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:07:42,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:07:42,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:07:42,680 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:07:42,680 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:07:42,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:07:42,680 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:07:42,680 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:07:42,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:07:42,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:07:42,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:07:42,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:07:42,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:07:42,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:07:42,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:07:42,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:07:42,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:07:42,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:07:42,683 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:07:42,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:07:42,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:07:42,683 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_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 [2024-11-13 16:07:42,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:07:42,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:07:42,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:07:42,993 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:07:42,993 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:07:42,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c Unable to find full path for "g++" [2024-11-13 16:07:44,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:07:45,271 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:07:45,277 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-11-13 16:07:45,289 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/data/304dd7f45/4cefd40150f14957a92e9f68a3fbd883/FLAG893de53e3 [2024-11-13 16:07:45,311 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/data/304dd7f45/4cefd40150f14957a92e9f68a3fbd883 [2024-11-13 16:07:45,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:07:45,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:07:45,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:07:45,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:07:45,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:07:45,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb6a21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45, skipping insertion in model container [2024-11-13 16:07:45,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,352 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:07:45,610 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_b4f8d798-74aa-4105-9532-394161ba7995/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[3044,3057] [2024-11-13 16:07:45,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:07:45,646 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:07:45,687 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_b4f8d798-74aa-4105-9532-394161ba7995/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[3044,3057] [2024-11-13 16:07:45,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:07:45,708 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:07:45,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45 WrapperNode [2024-11-13 16:07:45,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:07:45,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:07:45,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:07:45,710 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:07:45,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,764 INFO L138 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 206 [2024-11-13 16:07:45,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:07:45,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:07:45,767 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:07:45,767 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:07:45,776 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,779 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,793 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 16:07:45,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,807 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,811 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:07:45,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:07:45,812 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:07:45,812 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:07:45,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (1/1) ... [2024-11-13 16:07:45,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:07:45,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:45,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:07:45,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:07:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:07:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 16:07:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 16:07:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 16:07:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 16:07:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 16:07:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 16:07:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:07:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:07:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:07:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:07:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:07:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:07:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:07:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:07:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:07:45,876 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 16:07:46,006 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:07:46,010 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:07:46,485 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 16:07:46,485 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:07:46,859 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:07:46,859 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 16:07:46,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:07:46 BoogieIcfgContainer [2024-11-13 16:07:46,860 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:07:46,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:07:46,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:07:46,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:07:46,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:07:45" (1/3) ... [2024-11-13 16:07:46,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d43166a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:07:46, skipping insertion in model container [2024-11-13 16:07:46,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:45" (2/3) ... [2024-11-13 16:07:46,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d43166a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:07:46, skipping insertion in model container [2024-11-13 16:07:46,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:07:46" (3/3) ... [2024-11-13 16:07:46,871 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-11-13 16:07:46,889 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:07:46,890 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-lamport.wvr.c that has 4 procedures, 60 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 16:07:46,890 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 16:07:46,978 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 16:07:47,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 141 flow [2024-11-13 16:07:47,070 INFO L124 PetriNetUnfolderBase]: 1/57 cut-off events. [2024-11-13 16:07:47,074 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 16:07:47,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 1/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-13 16:07:47,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 60 transitions, 141 flow [2024-11-13 16:07:47,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 130 flow [2024-11-13 16:07:47,093 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:07:47,105 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;@328ac906, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:07:47,106 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 16:07:47,131 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 16:07:47,131 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-11-13 16:07:47,131 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 16:07:47,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:47,132 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:47,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 16:07:47,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:47,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1529830376, now seen corresponding path program 1 times [2024-11-13 16:07:47,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:47,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107456144] [2024-11-13 16:07:47,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:47,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:47,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:47,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107456144] [2024-11-13 16:07:47,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107456144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:48,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:48,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:07:48,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219502385] [2024-11-13 16:07:48,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:48,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:07:48,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:48,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:07:48,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:07:48,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 60 [2024-11-13 16:07:48,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:48,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:48,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 60 [2024-11-13 16:07:48,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:48,413 INFO L124 PetriNetUnfolderBase]: 307/620 cut-off events. [2024-11-13 16:07:48,414 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-13 16:07:48,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 620 events. 307/620 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3478 event pairs, 306 based on Foata normal form. 0/570 useless extension candidates. Maximal degree in co-relation 1036. Up to 507 conditions per place. [2024-11-13 16:07:48,424 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 28 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-13 16:07:48,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 192 flow [2024-11-13 16:07:48,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:07:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:07:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-13 16:07:48,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6722222222222223 [2024-11-13 16:07:48,442 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 130 flow. Second operand 3 states and 121 transitions. [2024-11-13 16:07:48,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 192 flow [2024-11-13 16:07:48,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 180 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 16:07:48,457 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 130 flow [2024-11-13 16:07:48,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-11-13 16:07:48,465 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2024-11-13 16:07:48,466 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 130 flow [2024-11-13 16:07:48,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:48,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:48,467 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:48,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:07:48,467 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 16:07:48,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:48,468 INFO L85 PathProgramCache]: Analyzing trace with hash 470094853, now seen corresponding path program 1 times [2024-11-13 16:07:48,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:48,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688997800] [2024-11-13 16:07:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:48,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:49,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:49,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688997800] [2024-11-13 16:07:49,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688997800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:49,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118129747] [2024-11-13 16:07:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:49,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:49,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:49,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:49,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:07:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:50,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 16:07:50,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:50,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 16:07:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:51,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:52,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2024-11-13 16:07:52,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:07:52,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 116 [2024-11-13 16:07:53,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2024-11-13 16:07:53,140 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-13 16:07:53,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 1 [2024-11-13 16:07:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:53,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118129747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:53,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:53,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2024-11-13 16:07:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295531167] [2024-11-13 16:07:53,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:53,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 16:07:53,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:53,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 16:07:53,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-11-13 16:07:53,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-13 16:07:53,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 130 flow. Second operand has 26 states, 26 states have (on average 24.46153846153846) internal successors, (636), 26 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:53,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:53,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-13 16:07:53,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:59,004 INFO L124 PetriNetUnfolderBase]: 4073/6876 cut-off events. [2024-11-13 16:07:59,004 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-13 16:07:59,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13409 conditions, 6876 events. 4073/6876 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 48346 event pairs, 563 based on Foata normal form. 4/6840 useless extension candidates. Maximal degree in co-relation 13379. Up to 1476 conditions per place. [2024-11-13 16:07:59,041 INFO L140 encePairwiseOnDemand]: 40/60 looper letters, 218 selfloop transitions, 122 changer transitions 95/453 dead transitions. [2024-11-13 16:07:59,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 453 transitions, 1862 flow [2024-11-13 16:07:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-13 16:07:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-13 16:07:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1342 transitions. [2024-11-13 16:07:59,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5201550387596899 [2024-11-13 16:07:59,052 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 130 flow. Second operand 43 states and 1342 transitions. [2024-11-13 16:07:59,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 453 transitions, 1862 flow [2024-11-13 16:07:59,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 453 transitions, 1858 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 16:07:59,061 INFO L231 Difference]: Finished difference. Result has 120 places, 188 transitions, 845 flow [2024-11-13 16:07:59,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=845, PETRI_PLACES=120, PETRI_TRANSITIONS=188} [2024-11-13 16:07:59,062 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 55 predicate places. [2024-11-13 16:07:59,063 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 188 transitions, 845 flow [2024-11-13 16:07:59,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 24.46153846153846) internal successors, (636), 26 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:59,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:59,064 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:59,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 16:07:59,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:59,265 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 16:07:59,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:59,265 INFO L85 PathProgramCache]: Analyzing trace with hash -703289365, now seen corresponding path program 2 times [2024-11-13 16:07:59,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:59,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41154529] [2024-11-13 16:07:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:59,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:07:59,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:59,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41154529] [2024-11-13 16:07:59,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41154529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:59,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:59,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:07:59,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846481503] [2024-11-13 16:07:59,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:59,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:07:59,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:07:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:07:59,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-11-13 16:07:59,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 188 transitions, 845 flow. Second operand has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:59,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:59,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-11-13 16:07:59,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:01,251 INFO L124 PetriNetUnfolderBase]: 4728/8589 cut-off events. [2024-11-13 16:08:01,252 INFO L125 PetriNetUnfolderBase]: For 12092/12284 co-relation queries the response was YES. [2024-11-13 16:08:01,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22962 conditions, 8589 events. 4728/8589 cut-off events. For 12092/12284 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 64376 event pairs, 1236 based on Foata normal form. 135/8492 useless extension candidates. Maximal degree in co-relation 22923. Up to 3149 conditions per place. [2024-11-13 16:08:01,374 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 166 selfloop transitions, 7 changer transitions 4/273 dead transitions. [2024-11-13 16:08:01,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 273 transitions, 1596 flow [2024-11-13 16:08:01,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:08:01,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:08:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-11-13 16:08:01,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2024-11-13 16:08:01,376 INFO L175 Difference]: Start difference. First operand has 120 places, 188 transitions, 845 flow. Second operand 5 states and 194 transitions. [2024-11-13 16:08:01,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 273 transitions, 1596 flow [2024-11-13 16:08:01,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 273 transitions, 1554 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-13 16:08:01,716 INFO L231 Difference]: Finished difference. Result has 120 places, 192 transitions, 858 flow [2024-11-13 16:08:01,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=858, PETRI_PLACES=120, PETRI_TRANSITIONS=192} [2024-11-13 16:08:01,718 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 55 predicate places. [2024-11-13 16:08:01,719 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 192 transitions, 858 flow [2024-11-13 16:08:01,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:01,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:01,720 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:01,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:08:01,720 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 16:08:01,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1311400451, now seen corresponding path program 3 times [2024-11-13 16:08:01,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:01,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762610935] [2024-11-13 16:08:01,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:01,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:02,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:02,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762610935] [2024-11-13 16:08:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762610935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:02,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816720906] [2024-11-13 16:08:02,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:08:02,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:02,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:02,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:02,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:08:02,886 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 16:08:02,887 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:02,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 16:08:02,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:03,186 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:08:03,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-13 16:08:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:08:03,210 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:08:03,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816720906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:08:03,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:08:03,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 18 [2024-11-13 16:08:03,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267846786] [2024-11-13 16:08:03,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:08:03,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:08:03,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:03,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:08:03,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:08:03,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-13 16:08:03,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 192 transitions, 858 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:03,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:03,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-13 16:08:03,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:08,238 INFO L124 PetriNetUnfolderBase]: 7108/12011 cut-off events. [2024-11-13 16:08:08,238 INFO L125 PetriNetUnfolderBase]: For 17144/17323 co-relation queries the response was YES. [2024-11-13 16:08:08,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35516 conditions, 12011 events. 7108/12011 cut-off events. For 17144/17323 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 86750 event pairs, 1361 based on Foata normal form. 179/12059 useless extension candidates. Maximal degree in co-relation 31480. Up to 7466 conditions per place. [2024-11-13 16:08:08,381 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 327 selfloop transitions, 180 changer transitions 42/569 dead transitions. [2024-11-13 16:08:08,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 569 transitions, 3716 flow [2024-11-13 16:08:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 16:08:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-13 16:08:08,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 929 transitions. [2024-11-13 16:08:08,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4553921568627451 [2024-11-13 16:08:08,389 INFO L175 Difference]: Start difference. First operand has 120 places, 192 transitions, 858 flow. Second operand 34 states and 929 transitions. [2024-11-13 16:08:08,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 569 transitions, 3716 flow [2024-11-13 16:08:08,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 569 transitions, 3712 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:08:08,679 INFO L231 Difference]: Finished difference. Result has 181 places, 354 transitions, 2479 flow [2024-11-13 16:08:08,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2479, PETRI_PLACES=181, PETRI_TRANSITIONS=354} [2024-11-13 16:08:08,680 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 116 predicate places. [2024-11-13 16:08:08,681 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 354 transitions, 2479 flow [2024-11-13 16:08:08,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:08,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:08,681 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:08,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:08:08,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:08,882 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 16:08:08,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:08,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1326232399, now seen corresponding path program 4 times [2024-11-13 16:08:08,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:08,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324918538] [2024-11-13 16:08:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:08,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:09,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:09,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324918538] [2024-11-13 16:08:09,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324918538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252263296] [2024-11-13 16:08:09,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:08:09,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:09,578 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:09,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:08:09,805 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:08:09,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:09,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 16:08:09,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:10,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:08:10,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-13 16:08:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:08:10,199 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:08:10,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252263296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:08:10,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:08:10,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 18 [2024-11-13 16:08:10,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140817550] [2024-11-13 16:08:10,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:08:10,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:08:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:08:10,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:08:10,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-13 16:08:10,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 354 transitions, 2479 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:10,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:10,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-13 16:08:10,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:15,536 INFO L124 PetriNetUnfolderBase]: 9629/16154 cut-off events. [2024-11-13 16:08:15,537 INFO L125 PetriNetUnfolderBase]: For 53504/53747 co-relation queries the response was YES. [2024-11-13 16:08:15,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60595 conditions, 16154 events. 9629/16154 cut-off events. For 53504/53747 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 122262 event pairs, 1751 based on Foata normal form. 243/16235 useless extension candidates. Maximal degree in co-relation 60330. Up to 9448 conditions per place. [2024-11-13 16:08:15,747 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 569 selfloop transitions, 305 changer transitions 37/931 dead transitions. [2024-11-13 16:08:15,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 931 transitions, 8158 flow [2024-11-13 16:08:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 16:08:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-13 16:08:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 962 transitions. [2024-11-13 16:08:15,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4580952380952381 [2024-11-13 16:08:15,759 INFO L175 Difference]: Start difference. First operand has 181 places, 354 transitions, 2479 flow. Second operand 35 states and 962 transitions. [2024-11-13 16:08:15,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 931 transitions, 8158 flow [2024-11-13 16:08:17,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 931 transitions, 7886 flow, removed 132 selfloop flow, removed 2 redundant places. [2024-11-13 16:08:17,200 INFO L231 Difference]: Finished difference. Result has 237 places, 643 transitions, 5650 flow [2024-11-13 16:08:17,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5650, PETRI_PLACES=237, PETRI_TRANSITIONS=643} [2024-11-13 16:08:17,201 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 172 predicate places. [2024-11-13 16:08:17,201 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 643 transitions, 5650 flow [2024-11-13 16:08:17,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:17,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:17,202 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:17,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:08:17,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:17,403 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 16:08:17,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:17,403 INFO L85 PathProgramCache]: Analyzing trace with hash 563852435, now seen corresponding path program 5 times [2024-11-13 16:08:17,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:17,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746919068] [2024-11-13 16:08:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:17,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:18,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:18,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:18,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746919068] [2024-11-13 16:08:18,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746919068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:18,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114802142] [2024-11-13 16:08:18,102 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:08:18,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:18,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:18,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:18,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:08:18,238 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:08:18,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:18,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 16:08:18,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:18,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 16:08:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:18,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:18,747 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 16:08:18,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 16:08:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:18,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114802142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:18,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:18,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2024-11-13 16:08:18,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628548052] [2024-11-13 16:08:18,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:18,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 16:08:18,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:18,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 16:08:18,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:08:19,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-13 16:08:19,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 643 transitions, 5650 flow. Second operand has 19 states, 19 states have (on average 24.36842105263158) internal successors, (463), 19 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:19,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:19,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-13 16:08:19,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:24,818 INFO L124 PetriNetUnfolderBase]: 9366/16061 cut-off events. [2024-11-13 16:08:24,818 INFO L125 PetriNetUnfolderBase]: For 91723/92083 co-relation queries the response was YES. [2024-11-13 16:08:24,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70306 conditions, 16061 events. 9366/16061 cut-off events. For 91723/92083 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 126350 event pairs, 1482 based on Foata normal form. 258/16096 useless extension candidates. Maximal degree in co-relation 69244. Up to 5417 conditions per place. [2024-11-13 16:08:25,026 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 573 selfloop transitions, 245 changer transitions 10/858 dead transitions. [2024-11-13 16:08:25,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 858 transitions, 8967 flow [2024-11-13 16:08:25,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:08:25,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-13 16:08:25,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 521 transitions. [2024-11-13 16:08:25,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5107843137254902 [2024-11-13 16:08:25,029 INFO L175 Difference]: Start difference. First operand has 237 places, 643 transitions, 5650 flow. Second operand 17 states and 521 transitions. [2024-11-13 16:08:25,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 858 transitions, 8967 flow [2024-11-13 16:08:26,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 858 transitions, 8245 flow, removed 361 selfloop flow, removed 0 redundant places. [2024-11-13 16:08:26,861 INFO L231 Difference]: Finished difference. Result has 262 places, 733 transitions, 6792 flow [2024-11-13 16:08:26,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=5150, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6792, PETRI_PLACES=262, PETRI_TRANSITIONS=733} [2024-11-13 16:08:26,869 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 197 predicate places. [2024-11-13 16:08:26,870 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 733 transitions, 6792 flow [2024-11-13 16:08:26,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.36842105263158) internal successors, (463), 19 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:26,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:26,871 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:26,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 16:08:27,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:27,076 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 16:08:27,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash 462180783, now seen corresponding path program 6 times [2024-11-13 16:08:27,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963365769] [2024-11-13 16:08:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:27,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:27,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963365769] [2024-11-13 16:08:27,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963365769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:27,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466135880] [2024-11-13 16:08:27,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:08:27,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:27,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:27,681 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:27,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:08:27,800 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-13 16:08:27,801 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:27,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 16:08:27,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:28,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:08:28,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-13 16:08:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:08:28,277 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:08:28,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466135880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:08:28,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:08:28,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 19 [2024-11-13 16:08:28,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67914896] [2024-11-13 16:08:28,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:08:28,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:08:28,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:28,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:08:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:08:28,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-13 16:08:28,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 733 transitions, 6792 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:28,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:28,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-13 16:08:28,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:35,877 INFO L124 PetriNetUnfolderBase]: 13011/21916 cut-off events. [2024-11-13 16:08:35,877 INFO L125 PetriNetUnfolderBase]: For 143103/143430 co-relation queries the response was YES. [2024-11-13 16:08:36,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101839 conditions, 21916 events. 13011/21916 cut-off events. For 143103/143430 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 174991 event pairs, 2278 based on Foata normal form. 327/22074 useless extension candidates. Maximal degree in co-relation 100859. Up to 14498 conditions per place. [2024-11-13 16:08:36,209 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 819 selfloop transitions, 382 changer transitions 50/1271 dead transitions. [2024-11-13 16:08:36,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1271 transitions, 14743 flow [2024-11-13 16:08:36,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 16:08:36,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-13 16:08:36,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 943 transitions. [2024-11-13 16:08:36,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46225490196078434 [2024-11-13 16:08:36,213 INFO L175 Difference]: Start difference. First operand has 262 places, 733 transitions, 6792 flow. Second operand 34 states and 943 transitions. [2024-11-13 16:08:36,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1271 transitions, 14743 flow [2024-11-13 16:08:39,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1271 transitions, 14569 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-11-13 16:08:39,403 INFO L231 Difference]: Finished difference. Result has 311 places, 989 transitions, 10935 flow [2024-11-13 16:08:39,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=6712, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=10935, PETRI_PLACES=311, PETRI_TRANSITIONS=989} [2024-11-13 16:08:39,405 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 246 predicate places. [2024-11-13 16:08:39,405 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 989 transitions, 10935 flow [2024-11-13 16:08:39,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:39,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:39,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:39,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:08:39,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:39,610 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 16:08:39,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:39,611 INFO L85 PathProgramCache]: Analyzing trace with hash -825248673, now seen corresponding path program 7 times [2024-11-13 16:08:39,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:39,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090493409] [2024-11-13 16:08:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:39,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:40,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:40,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090493409] [2024-11-13 16:08:40,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090493409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:40,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138713554] [2024-11-13 16:08:40,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:08:40,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:40,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:40,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:40,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:08:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:40,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 16:08:40,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:40,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:08:40,896 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-13 16:08:40,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2024-11-13 16:08:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:41,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:41,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2024-11-13 16:08:41,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:08:41,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 116 [2024-11-13 16:08:42,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2024-11-13 16:08:42,334 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-13 16:08:42,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 1 [2024-11-13 16:08:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:42,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138713554] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:42,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:42,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2024-11-13 16:08:42,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729859063] [2024-11-13 16:08:42,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:42,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 16:08:42,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:42,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 16:08:42,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2024-11-13 16:08:42,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-13 16:08:42,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 989 transitions, 10935 flow. Second operand has 26 states, 26 states have (on average 24.53846153846154) internal successors, (638), 26 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:42,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:42,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-13 16:08:42,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:56,325 INFO L124 PetriNetUnfolderBase]: 14397/24929 cut-off events. [2024-11-13 16:08:56,326 INFO L125 PetriNetUnfolderBase]: For 207943/208392 co-relation queries the response was YES. [2024-11-13 16:08:56,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125634 conditions, 24929 events. 14397/24929 cut-off events. For 207943/208392 co-relation queries the response was YES. Maximal size of possible extension queue 1416. Compared 213866 event pairs, 1728 based on Foata normal form. 398/25092 useless extension candidates. Maximal degree in co-relation 124667. Up to 7090 conditions per place. [2024-11-13 16:08:56,754 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 466 selfloop transitions, 143 changer transitions 911/1555 dead transitions. [2024-11-13 16:08:56,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 1555 transitions, 19730 flow [2024-11-13 16:08:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 16:08:56,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-13 16:08:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1035 transitions. [2024-11-13 16:08:56,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2024-11-13 16:08:56,757 INFO L175 Difference]: Start difference. First operand has 311 places, 989 transitions, 10935 flow. Second operand 34 states and 1035 transitions. [2024-11-13 16:08:56,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 1555 transitions, 19730 flow [2024-11-13 16:09:02,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 1555 transitions, 18355 flow, removed 629 selfloop flow, removed 3 redundant places. [2024-11-13 16:09:02,095 INFO L231 Difference]: Finished difference. Result has 357 places, 551 transitions, 5360 flow [2024-11-13 16:09:02,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=9893, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=989, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=854, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5360, PETRI_PLACES=357, PETRI_TRANSITIONS=551} [2024-11-13 16:09:02,096 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 292 predicate places. [2024-11-13 16:09:02,097 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 551 transitions, 5360 flow [2024-11-13 16:09:02,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 24.53846153846154) internal successors, (638), 26 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:09:02,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:09:02,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:09:02,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 16:09:02,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:09:02,298 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 16:09:02,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:09:02,298 INFO L85 PathProgramCache]: Analyzing trace with hash -86309309, now seen corresponding path program 8 times [2024-11-13 16:09:02,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:09:02,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686472457] [2024-11-13 16:09:02,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:09:02,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:09:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:09:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:02,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:09:02,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686472457] [2024-11-13 16:09:02,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686472457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:09:02,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643790533] [2024-11-13 16:09:02,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:09:02,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:09:02,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:09:02,973 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:09:02,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:09:03,095 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 16:09:03,095 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:09:03,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 16:09:03,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:09:03,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:09:03,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-13 16:09:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:09:03,564 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:09:03,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643790533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:09:03,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:09:03,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 19 [2024-11-13 16:09:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654924659] [2024-11-13 16:09:03,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:09:03,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:09:03,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:09:03,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:09:03,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:09:03,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-13 16:09:03,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 551 transitions, 5360 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:09:03,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:09:03,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-13 16:09:03,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:09:13,519 INFO L124 PetriNetUnfolderBase]: 11409/19290 cut-off events. [2024-11-13 16:09:13,520 INFO L125 PetriNetUnfolderBase]: For 200089/200348 co-relation queries the response was YES. [2024-11-13 16:09:13,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99318 conditions, 19290 events. 11409/19290 cut-off events. For 200089/200348 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 152679 event pairs, 2064 based on Foata normal form. 258/19354 useless extension candidates. Maximal degree in co-relation 99196. Up to 12612 conditions per place. [2024-11-13 16:09:14,076 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 662 selfloop transitions, 300 changer transitions 140/1122 dead transitions. [2024-11-13 16:09:14,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 1122 transitions, 13310 flow [2024-11-13 16:09:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 16:09:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-13 16:09:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1039 transitions. [2024-11-13 16:09:14,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.444017094017094 [2024-11-13 16:09:14,080 INFO L175 Difference]: Start difference. First operand has 357 places, 551 transitions, 5360 flow. Second operand 39 states and 1039 transitions. [2024-11-13 16:09:14,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 1122 transitions, 13310 flow [2024-11-13 16:09:17,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1122 transitions, 12132 flow, removed 391 selfloop flow, removed 39 redundant places. [2024-11-13 16:09:17,444 INFO L231 Difference]: Finished difference. Result has 365 places, 742 transitions, 8242 flow [2024-11-13 16:09:17,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=4650, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=8242, PETRI_PLACES=365, PETRI_TRANSITIONS=742} [2024-11-13 16:09:17,446 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 300 predicate places. [2024-11-13 16:09:17,446 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 742 transitions, 8242 flow [2024-11-13 16:09:17,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:09:17,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:09:17,447 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:09:17,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:09:17,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:09:17,647 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 16:09:17,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:09:17,648 INFO L85 PathProgramCache]: Analyzing trace with hash -559155157, now seen corresponding path program 9 times [2024-11-13 16:09:17,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:09:17,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399420659] [2024-11-13 16:09:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:09:17,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:09:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:09:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:18,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:09:18,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399420659] [2024-11-13 16:09:18,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399420659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:09:18,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473725497] [2024-11-13 16:09:18,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:09:18,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:09:18,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:09:18,179 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:09:18,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:09:18,292 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 16:09:18,293 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:09:18,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 16:09:18,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:09:18,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:09:18,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-13 16:09:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:09:18,690 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:09:18,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473725497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:09:18,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:09:18,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 20 [2024-11-13 16:09:18,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367468511] [2024-11-13 16:09:18,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:09:18,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:09:18,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:09:18,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:09:18,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:09:18,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-13 16:09:18,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 742 transitions, 8242 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:09:18,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:09:18,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-13 16:09:18,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:09:28,021 INFO L124 PetriNetUnfolderBase]: 12164/20442 cut-off events. [2024-11-13 16:09:28,021 INFO L125 PetriNetUnfolderBase]: For 269151/269398 co-relation queries the response was YES. [2024-11-13 16:09:28,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114941 conditions, 20442 events. 12164/20442 cut-off events. For 269151/269398 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 162736 event pairs, 2046 based on Foata normal form. 244/20487 useless extension candidates. Maximal degree in co-relation 114823. Up to 11904 conditions per place. [2024-11-13 16:09:28,517 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 738 selfloop transitions, 406 changer transitions 73/1237 dead transitions. [2024-11-13 16:09:28,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1237 transitions, 15961 flow [2024-11-13 16:09:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 16:09:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-13 16:09:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1074 transitions. [2024-11-13 16:09:28,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4475 [2024-11-13 16:09:28,520 INFO L175 Difference]: Start difference. First operand has 365 places, 742 transitions, 8242 flow. Second operand 40 states and 1074 transitions. [2024-11-13 16:09:28,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1237 transitions, 15961 flow [2024-11-13 16:09:34,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1237 transitions, 14498 flow, removed 615 selfloop flow, removed 20 redundant places. [2024-11-13 16:09:34,654 INFO L231 Difference]: Finished difference. Result has 377 places, 928 transitions, 11159 flow [2024-11-13 16:09:34,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=7302, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=11159, PETRI_PLACES=377, PETRI_TRANSITIONS=928} [2024-11-13 16:09:34,656 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 312 predicate places. [2024-11-13 16:09:34,656 INFO L471 AbstractCegarLoop]: Abstraction has has 377 places, 928 transitions, 11159 flow [2024-11-13 16:09:34,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:09:34,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:09:34,657 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:09:34,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:09:34,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 16:09:34,861 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 16:09:34,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:09:34,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1780368141, now seen corresponding path program 10 times [2024-11-13 16:09:34,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:09:34,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955907391] [2024-11-13 16:09:34,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:09:34,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:09:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:09:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:35,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:09:35,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955907391] [2024-11-13 16:09:35,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955907391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:09:35,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829089825] [2024-11-13 16:09:35,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:09:35,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:09:35,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:09:35,367 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:09:35,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4f8d798-74aa-4105-9532-394161ba7995/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:09:35,480 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:09:35,480 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:09:35,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 16:09:35,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:09:35,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:09:35,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-13 16:09:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:09:35,869 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:09:35,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829089825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:09:35,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:09:35,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 19 [2024-11-13 16:09:35,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725362562] [2024-11-13 16:09:35,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:09:35,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:09:35,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:09:35,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:09:35,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:09:36,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-13 16:09:36,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 928 transitions, 11159 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:09:36,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:09:36,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-13 16:09:36,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:09:46,148 INFO L124 PetriNetUnfolderBase]: 12506/21047 cut-off events. [2024-11-13 16:09:46,148 INFO L125 PetriNetUnfolderBase]: For 252538/252785 co-relation queries the response was YES.