./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX --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 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:11:28,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:11:28,837 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:11:28,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:11:28,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:11:28,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:11:28,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:11:28,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:11:28,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:11:28,884 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:11:28,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:11:28,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:11:28,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:11:28,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:11:28,890 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:11:28,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:11:28,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:11:28,891 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:11:28,891 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:11:28,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:11:28,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:11:28,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:11:28,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:11:28,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:11:28,893 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:11:28,894 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:11:28,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:11:28,894 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:11:28,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:11:28,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:11:28,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:11:28,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:11:28,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:11:28,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:11:28,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:11:28,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:11:28,899 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:11:28,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:11:28,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:11:28,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:11:28,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:11:28,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:11:28,901 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2024-11-08 17:11:29,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:11:29,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:11:29,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:11:29,209 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:11:29,209 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:11:29,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c Unable to find full path for "g++" [2024-11-08 17:11:31,207 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:11:31,447 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:11:31,448 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-11-08 17:11:31,459 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/data/9087d9990/e808644580e24755b6d4178a325218d9/FLAG648e56664 [2024-11-08 17:11:31,792 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/data/9087d9990/e808644580e24755b6d4178a325218d9 [2024-11-08 17:11:31,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:11:31,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:11:31,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:11:31,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:11:31,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:11:31,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:11:31" (1/1) ... [2024-11-08 17:11:31,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538aa904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:31, skipping insertion in model container [2024-11-08 17:11:31,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:11:31" (1/1) ... [2024-11-08 17:11:31,843 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:11:32,077 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_d7b65ed4-aa79-497d-b6bf-39024971f015/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-11-08 17:11:32,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:11:32,098 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:11:32,131 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_d7b65ed4-aa79-497d-b6bf-39024971f015/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-11-08 17:11:32,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:11:32,164 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:11:32,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32 WrapperNode [2024-11-08 17:11:32,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:11:32,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:11:32,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:11:32,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:11:32,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (1/1) ... [2024-11-08 17:11:32,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (1/1) ... [2024-11-08 17:11:32,220 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 300 [2024-11-08 17:11:32,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:11:32,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:11:32,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:11:32,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:11:32,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (1/1) ... [2024-11-08 17:11:32,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (1/1) ... [2024-11-08 17:11:32,250 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (1/1) ... [2024-11-08 17:11:32,272 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 17:11:32,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (1/1) ... [2024-11-08 17:11:32,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (1/1) ... [2024-11-08 17:11:32,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (1/1) ... [2024-11-08 17:11:32,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (1/1) ... [2024-11-08 17:11:32,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (1/1) ... [2024-11-08 17:11:32,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (1/1) ... [2024-11-08 17:11:32,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:11:32,312 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:11:32,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:11:32,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:11:32,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (1/1) ... [2024-11-08 17:11:32,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:11:32,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:11:32,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:11:32,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:11:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:11:32,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:11:32,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:11:32,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:11:32,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:11:32,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:11:32,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:11:32,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:11:32,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:11:32,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:11:32,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:11:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:11:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:11:32,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:11:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:11:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:11:32,407 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:11:32,575 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:11:32,577 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:11:33,172 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:11:33,173 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:11:33,799 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:11:33,801 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 17:11:33,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:11:33 BoogieIcfgContainer [2024-11-08 17:11:33,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:11:33,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:11:33,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:11:33,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:11:33,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:11:31" (1/3) ... [2024-11-08 17:11:33,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384e7511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:11:33, skipping insertion in model container [2024-11-08 17:11:33,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:11:32" (2/3) ... [2024-11-08 17:11:33,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384e7511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:11:33, skipping insertion in model container [2024-11-08 17:11:33,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:11:33" (3/3) ... [2024-11-08 17:11:33,814 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2024-11-08 17:11:33,835 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:11:33,835 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:11:33,835 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:11:33,926 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 17:11:33,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 39 transitions, 99 flow [2024-11-08 17:11:34,023 INFO L124 PetriNetUnfolderBase]: 8/36 cut-off events. [2024-11-08 17:11:34,024 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:11:34,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 8/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-08 17:11:34,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 39 transitions, 99 flow [2024-11-08 17:11:34,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 35 transitions, 88 flow [2024-11-08 17:11:34,059 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:11:34,076 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;@34d40692, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:11:34,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 17:11:34,114 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:11:34,114 INFO L124 PetriNetUnfolderBase]: 8/34 cut-off events. [2024-11-08 17:11:34,114 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:11:34,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:34,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:34,117 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)] === [2024-11-08 17:11:34,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:34,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1646961992, now seen corresponding path program 1 times [2024-11-08 17:11:34,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:34,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758904016] [2024-11-08 17:11:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:34,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:34,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:34,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758904016] [2024-11-08 17:11:34,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758904016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:11:34,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:11:34,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:11:34,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062941623] [2024-11-08 17:11:34,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:11:34,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:11:34,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:34,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:11:34,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:11:34,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 39 [2024-11-08 17:11:34,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-11-08 17:11:34,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:34,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 39 [2024-11-08 17:11:34,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:35,217 INFO L124 PetriNetUnfolderBase]: 793/1142 cut-off events. [2024-11-08 17:11:35,217 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-11-08 17:11:35,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2379 conditions, 1142 events. 793/1142 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3706 event pairs, 608 based on Foata normal form. 1/959 useless extension candidates. Maximal degree in co-relation 2150. Up to 1139 conditions per place. [2024-11-08 17:11:35,234 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 29 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-08 17:11:35,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 146 flow [2024-11-08 17:11:35,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:11:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:11:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-08 17:11:35,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-11-08 17:11:35,250 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 88 flow. Second operand 3 states and 51 transitions. [2024-11-08 17:11:35,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 146 flow [2024-11-08 17:11:35,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 134 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:11:35,261 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 84 flow [2024-11-08 17:11:35,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-11-08 17:11:35,267 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2024-11-08 17:11:35,268 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 84 flow [2024-11-08 17:11:35,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-11-08 17:11:35,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:35,269 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:35,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:11:35,270 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)] === [2024-11-08 17:11:35,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:35,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1055933651, now seen corresponding path program 1 times [2024-11-08 17:11:35,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:35,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265228033] [2024-11-08 17:11:35,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:35,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:35,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265228033] [2024-11-08 17:11:35,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265228033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:11:35,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403310993] [2024-11-08 17:11:35,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:35,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:35,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:11:35,586 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:11:35,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:11:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:35,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:11:35,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:11:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:35,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:11:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:35,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403310993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:11:35,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:11:35,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-08 17:11:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738895100] [2024-11-08 17:11:35,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:11:35,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:11:35,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:11:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:11:35,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2024-11-08 17:11:35,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:35,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:35,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2024-11-08 17:11:35,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:36,270 INFO L124 PetriNetUnfolderBase]: 792/1144 cut-off events. [2024-11-08 17:11:36,271 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-08 17:11:36,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 1144 events. 792/1144 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3702 event pairs, 608 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 2315. Up to 1137 conditions per place. [2024-11-08 17:11:36,280 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 30 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-11-08 17:11:36,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 160 flow [2024-11-08 17:11:36,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:11:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:11:36,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-08 17:11:36,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30256410256410254 [2024-11-08 17:11:36,282 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 84 flow. Second operand 5 states and 59 transitions. [2024-11-08 17:11:36,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 160 flow [2024-11-08 17:11:36,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:11:36,284 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 108 flow [2024-11-08 17:11:36,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-08 17:11:36,287 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-11-08 17:11:36,288 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 108 flow [2024-11-08 17:11:36,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:36,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:36,288 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:36,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:11:36,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:36,489 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)] === [2024-11-08 17:11:36,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:36,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1331451403, now seen corresponding path program 2 times [2024-11-08 17:11:36,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:36,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203344541] [2024-11-08 17:11:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:36,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:11:37,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:37,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203344541] [2024-11-08 17:11:37,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203344541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:11:37,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:11:37,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:11:37,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141468187] [2024-11-08 17:11:37,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:11:37,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:11:37,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:37,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:11:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:11:37,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:11:37,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:37,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:37,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:11:37,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:38,105 INFO L124 PetriNetUnfolderBase]: 1926/2793 cut-off events. [2024-11-08 17:11:38,106 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-08 17:11:38,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5653 conditions, 2793 events. 1926/2793 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11937 event pairs, 608 based on Foata normal form. 1/2310 useless extension candidates. Maximal degree in co-relation 5619. Up to 1183 conditions per place. [2024-11-08 17:11:38,120 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 74 selfloop transitions, 7 changer transitions 11/96 dead transitions. [2024-11-08 17:11:38,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 96 transitions, 429 flow [2024-11-08 17:11:38,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:11:38,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:11:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-11-08 17:11:38,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5683760683760684 [2024-11-08 17:11:38,125 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 108 flow. Second operand 6 states and 133 transitions. [2024-11-08 17:11:38,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 96 transitions, 429 flow [2024-11-08 17:11:38,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 96 transitions, 423 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-08 17:11:38,130 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 153 flow [2024-11-08 17:11:38,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-11-08 17:11:38,131 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-11-08 17:11:38,131 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 153 flow [2024-11-08 17:11:38,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:38,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:38,132 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:38,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:11:38,132 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)] === [2024-11-08 17:11:38,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash 955818471, now seen corresponding path program 3 times [2024-11-08 17:11:38,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:38,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925096316] [2024-11-08 17:11:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:38,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:11:38,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:38,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925096316] [2024-11-08 17:11:38,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925096316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:11:38,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:11:38,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:11:38,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543222100] [2024-11-08 17:11:38,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:11:38,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:11:38,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:38,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:11:38,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:11:38,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:11:38,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:38,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:38,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:11:38,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:39,819 INFO L124 PetriNetUnfolderBase]: 2953/4263 cut-off events. [2024-11-08 17:11:39,820 INFO L125 PetriNetUnfolderBase]: For 1354/1354 co-relation queries the response was YES. [2024-11-08 17:11:39,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10373 conditions, 4263 events. 2953/4263 cut-off events. For 1354/1354 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 19046 event pairs, 1209 based on Foata normal form. 1/4034 useless extension candidates. Maximal degree in co-relation 10338. Up to 2088 conditions per place. [2024-11-08 17:11:39,843 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 73 selfloop transitions, 8 changer transitions 11/96 dead transitions. [2024-11-08 17:11:39,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 96 transitions, 498 flow [2024-11-08 17:11:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:11:39,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:11:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-11-08 17:11:39,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5256410256410257 [2024-11-08 17:11:39,845 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 153 flow. Second operand 6 states and 123 transitions. [2024-11-08 17:11:39,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 96 transitions, 498 flow [2024-11-08 17:11:39,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 494 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-08 17:11:39,856 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 210 flow [2024-11-08 17:11:39,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-11-08 17:11:39,857 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2024-11-08 17:11:39,858 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 210 flow [2024-11-08 17:11:39,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:39,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:39,859 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:39,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:11:39,859 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)] === [2024-11-08 17:11:39,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:39,860 INFO L85 PathProgramCache]: Analyzing trace with hash 615757787, now seen corresponding path program 4 times [2024-11-08 17:11:39,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:39,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872322757] [2024-11-08 17:11:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:39,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:11:40,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:40,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872322757] [2024-11-08 17:11:40,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872322757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:11:40,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:11:40,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:11:40,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617995976] [2024-11-08 17:11:40,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:11:40,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:11:40,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:40,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:11:40,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:11:40,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:11:40,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2024-11-08 17:11:40,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:40,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:11:40,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:43,267 INFO L124 PetriNetUnfolderBase]: 7015/10231 cut-off events. [2024-11-08 17:11:43,268 INFO L125 PetriNetUnfolderBase]: For 11290/11290 co-relation queries the response was YES. [2024-11-08 17:11:43,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28444 conditions, 10231 events. 7015/10231 cut-off events. For 11290/11290 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 57038 event pairs, 2510 based on Foata normal form. 1/9650 useless extension candidates. Maximal degree in co-relation 28404. Up to 4350 conditions per place. [2024-11-08 17:11:43,354 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 121 selfloop transitions, 19 changer transitions 2/146 dead transitions. [2024-11-08 17:11:43,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 146 transitions, 969 flow [2024-11-08 17:11:43,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:11:43,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:11:43,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-11-08 17:11:43,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-08 17:11:43,357 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 210 flow. Second operand 7 states and 156 transitions. [2024-11-08 17:11:43,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 146 transitions, 969 flow [2024-11-08 17:11:43,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 146 transitions, 942 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-08 17:11:43,382 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 423 flow [2024-11-08 17:11:43,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=423, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-11-08 17:11:43,383 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2024-11-08 17:11:43,383 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 423 flow [2024-11-08 17:11:43,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2024-11-08 17:11:43,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:43,384 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:43,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:11:43,385 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)] === [2024-11-08 17:11:43,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:43,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1683833169, now seen corresponding path program 5 times [2024-11-08 17:11:43,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:43,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008558770] [2024-11-08 17:11:43,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:43,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:11:44,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:44,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008558770] [2024-11-08 17:11:44,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008558770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:11:44,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:11:44,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:11:44,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033400052] [2024-11-08 17:11:44,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:11:44,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:11:44,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:44,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:11:44,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:11:44,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:11:44,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 423 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:44,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:44,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:11:44,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:46,133 INFO L124 PetriNetUnfolderBase]: 7027/10283 cut-off events. [2024-11-08 17:11:46,134 INFO L125 PetriNetUnfolderBase]: For 17888/17888 co-relation queries the response was YES. [2024-11-08 17:11:46,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32187 conditions, 10283 events. 7027/10283 cut-off events. For 17888/17888 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 55612 event pairs, 2797 based on Foata normal form. 4/10287 useless extension candidates. Maximal degree in co-relation 32143. Up to 4779 conditions per place. [2024-11-08 17:11:46,215 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 95 selfloop transitions, 20 changer transitions 14/133 dead transitions. [2024-11-08 17:11:46,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 133 transitions, 984 flow [2024-11-08 17:11:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:11:46,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:11:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-11-08 17:11:46,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2024-11-08 17:11:46,221 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 423 flow. Second operand 6 states and 128 transitions. [2024-11-08 17:11:46,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 133 transitions, 984 flow [2024-11-08 17:11:46,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 133 transitions, 982 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-08 17:11:46,286 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 583 flow [2024-11-08 17:11:46,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=583, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2024-11-08 17:11:46,288 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-11-08 17:11:46,289 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 583 flow [2024-11-08 17:11:46,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:46,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:46,290 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:46,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:11:46,290 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)] === [2024-11-08 17:11:46,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:46,291 INFO L85 PathProgramCache]: Analyzing trace with hash 924204581, now seen corresponding path program 6 times [2024-11-08 17:11:46,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:46,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040094606] [2024-11-08 17:11:46,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:46,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:11:47,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:47,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040094606] [2024-11-08 17:11:47,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040094606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:11:47,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:11:47,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:11:47,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608120508] [2024-11-08 17:11:47,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:11:47,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:11:47,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:11:47,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:11:47,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:11:47,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 583 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2024-11-08 17:11:47,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:47,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:11:47,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:49,321 INFO L124 PetriNetUnfolderBase]: 7022/10318 cut-off events. [2024-11-08 17:11:49,322 INFO L125 PetriNetUnfolderBase]: For 28574/28574 co-relation queries the response was YES. [2024-11-08 17:11:49,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35055 conditions, 10318 events. 7022/10318 cut-off events. For 28574/28574 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 57223 event pairs, 2368 based on Foata normal form. 1/10319 useless extension candidates. Maximal degree in co-relation 35006. Up to 4669 conditions per place. [2024-11-08 17:11:49,397 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 121 selfloop transitions, 36 changer transitions 3/164 dead transitions. [2024-11-08 17:11:49,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 164 transitions, 1480 flow [2024-11-08 17:11:49,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:11:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:11:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-11-08 17:11:49,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531135531135531 [2024-11-08 17:11:49,399 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 583 flow. Second operand 7 states and 151 transitions. [2024-11-08 17:11:49,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 164 transitions, 1480 flow [2024-11-08 17:11:49,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 164 transitions, 1403 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-11-08 17:11:49,509 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 845 flow [2024-11-08 17:11:49,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=845, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-11-08 17:11:49,510 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 43 predicate places. [2024-11-08 17:11:49,510 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 845 flow [2024-11-08 17:11:49,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2024-11-08 17:11:49,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:49,511 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:49,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:11:49,511 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)] === [2024-11-08 17:11:49,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:49,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1003058743, now seen corresponding path program 7 times [2024-11-08 17:11:49,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396342835] [2024-11-08 17:11:49,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:49,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:11:50,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:50,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396342835] [2024-11-08 17:11:50,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396342835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:11:50,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:11:50,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:11:50,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381191917] [2024-11-08 17:11:50,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:11:50,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:11:50,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:50,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:11:50,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:11:50,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:11:50,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 845 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:50,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:50,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:11:50,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:51,610 INFO L124 PetriNetUnfolderBase]: 7022/10310 cut-off events. [2024-11-08 17:11:51,610 INFO L125 PetriNetUnfolderBase]: For 35442/35442 co-relation queries the response was YES. [2024-11-08 17:11:51,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37148 conditions, 10310 events. 7022/10310 cut-off events. For 35442/35442 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 56816 event pairs, 2658 based on Foata normal form. 4/10314 useless extension candidates. Maximal degree in co-relation 37095. Up to 4492 conditions per place. [2024-11-08 17:11:51,668 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 93 selfloop transitions, 42 changer transitions 16/155 dead transitions. [2024-11-08 17:11:51,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 155 transitions, 1507 flow [2024-11-08 17:11:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:11:51,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:11:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-08 17:11:51,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5427350427350427 [2024-11-08 17:11:51,669 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 845 flow. Second operand 6 states and 127 transitions. [2024-11-08 17:11:51,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 155 transitions, 1507 flow [2024-11-08 17:11:51,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 155 transitions, 1453 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-11-08 17:11:51,785 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 1017 flow [2024-11-08 17:11:51,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1017, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2024-11-08 17:11:51,786 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 51 predicate places. [2024-11-08 17:11:51,786 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 1017 flow [2024-11-08 17:11:51,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:51,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:51,789 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:51,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:11:51,789 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)] === [2024-11-08 17:11:51,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:51,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1034358065, now seen corresponding path program 8 times [2024-11-08 17:11:51,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:51,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135377999] [2024-11-08 17:11:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:51,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:52,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:11:52,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:52,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135377999] [2024-11-08 17:11:52,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135377999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:11:52,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:11:52,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:11:52,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125557298] [2024-11-08 17:11:52,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:11:52,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:11:52,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:52,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:11:52,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:11:52,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:11:52,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 1017 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:52,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:52,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:11:52,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:54,157 INFO L124 PetriNetUnfolderBase]: 6968/10196 cut-off events. [2024-11-08 17:11:54,157 INFO L125 PetriNetUnfolderBase]: For 46877/46877 co-relation queries the response was YES. [2024-11-08 17:11:54,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38889 conditions, 10196 events. 6968/10196 cut-off events. For 46877/46877 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 56045 event pairs, 2436 based on Foata normal form. 5/10201 useless extension candidates. Maximal degree in co-relation 38832. Up to 4464 conditions per place. [2024-11-08 17:11:54,224 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 92 selfloop transitions, 46 changer transitions 17/159 dead transitions. [2024-11-08 17:11:54,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 159 transitions, 1692 flow [2024-11-08 17:11:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:11:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:11:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-11-08 17:11:54,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2024-11-08 17:11:54,226 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 1017 flow. Second operand 6 states and 128 transitions. [2024-11-08 17:11:54,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 159 transitions, 1692 flow [2024-11-08 17:11:54,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 159 transitions, 1641 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-08 17:11:54,478 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 1159 flow [2024-11-08 17:11:54,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1159, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2024-11-08 17:11:54,479 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 56 predicate places. [2024-11-08 17:11:54,479 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 1159 flow [2024-11-08 17:11:54,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:54,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:54,480 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:54,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:11:54,480 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)] === [2024-11-08 17:11:54,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:54,481 INFO L85 PathProgramCache]: Analyzing trace with hash 703767825, now seen corresponding path program 9 times [2024-11-08 17:11:54,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:54,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236141916] [2024-11-08 17:11:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:54,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:11:55,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:55,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236141916] [2024-11-08 17:11:55,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236141916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:11:55,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:11:55,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:11:55,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545329330] [2024-11-08 17:11:55,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:11:55,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:11:55,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:55,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:11:55,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:11:55,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:11:55,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 1159 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2024-11-08 17:11:55,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:55,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:11:55,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:56,921 INFO L124 PetriNetUnfolderBase]: 7208/10592 cut-off events. [2024-11-08 17:11:56,921 INFO L125 PetriNetUnfolderBase]: For 59372/59372 co-relation queries the response was YES. [2024-11-08 17:11:56,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41497 conditions, 10592 events. 7208/10592 cut-off events. For 59372/59372 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 60026 event pairs, 2537 based on Foata normal form. 1/10593 useless extension candidates. Maximal degree in co-relation 41438. Up to 4273 conditions per place. [2024-11-08 17:11:56,998 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 172 selfloop transitions, 28 changer transitions 2/206 dead transitions. [2024-11-08 17:11:56,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 206 transitions, 2590 flow [2024-11-08 17:11:56,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:11:56,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:11:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-11-08 17:11:57,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-08 17:11:57,000 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 1159 flow. Second operand 7 states and 147 transitions. [2024-11-08 17:11:57,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 206 transitions, 2590 flow [2024-11-08 17:11:57,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 206 transitions, 2420 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-11-08 17:11:57,266 INFO L231 Difference]: Finished difference. Result has 99 places, 111 transitions, 1429 flow [2024-11-08 17:11:57,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1429, PETRI_PLACES=99, PETRI_TRANSITIONS=111} [2024-11-08 17:11:57,267 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 62 predicate places. [2024-11-08 17:11:57,267 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 111 transitions, 1429 flow [2024-11-08 17:11:57,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2024-11-08 17:11:57,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:57,267 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:57,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:11:57,268 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)] === [2024-11-08 17:11:57,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:57,268 INFO L85 PathProgramCache]: Analyzing trace with hash -612518189, now seen corresponding path program 10 times [2024-11-08 17:11:57,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:57,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083259325] [2024-11-08 17:11:57,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:57,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:11:57,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083259325] [2024-11-08 17:11:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083259325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:11:57,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:11:57,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:11:57,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348027975] [2024-11-08 17:11:57,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:11:57,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:11:57,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:57,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:11:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:11:57,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:11:57,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 111 transitions, 1429 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:57,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:57,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:11:57,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:59,368 INFO L124 PetriNetUnfolderBase]: 7208/10582 cut-off events. [2024-11-08 17:11:59,368 INFO L125 PetriNetUnfolderBase]: For 60502/60502 co-relation queries the response was YES. [2024-11-08 17:11:59,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42270 conditions, 10582 events. 7208/10582 cut-off events. For 60502/60502 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 58283 event pairs, 2720 based on Foata normal form. 5/10587 useless extension candidates. Maximal degree in co-relation 42208. Up to 4876 conditions per place. [2024-11-08 17:11:59,446 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 116 selfloop transitions, 49 changer transitions 17/186 dead transitions. [2024-11-08 17:11:59,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 186 transitions, 2344 flow [2024-11-08 17:11:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:11:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:11:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-08 17:11:59,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-08 17:11:59,448 INFO L175 Difference]: Start difference. First operand has 99 places, 111 transitions, 1429 flow. Second operand 6 states and 126 transitions. [2024-11-08 17:11:59,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 186 transitions, 2344 flow [2024-11-08 17:11:59,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 186 transitions, 2309 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-08 17:11:59,693 INFO L231 Difference]: Finished difference. Result has 106 places, 118 transitions, 1684 flow [2024-11-08 17:11:59,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1684, PETRI_PLACES=106, PETRI_TRANSITIONS=118} [2024-11-08 17:11:59,694 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 69 predicate places. [2024-11-08 17:11:59,694 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 118 transitions, 1684 flow [2024-11-08 17:11:59,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:59,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:59,694 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:59,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:11:59,695 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:11:59,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash 383939848, now seen corresponding path program 1 times [2024-11-08 17:11:59,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:59,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070207999] [2024-11-08 17:11:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:59,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:12:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:00,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:12:00,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070207999] [2024-11-08 17:12:00,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070207999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:12:00,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8871776] [2024-11-08 17:12:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:12:00,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:12:00,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:12:00,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:12:00,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:12:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:12:00,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:12:00,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:12:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:00,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:12:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:00,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8871776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:12:00,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:12:00,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-08 17:12:00,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630910407] [2024-11-08 17:12:00,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:12:00,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 17:12:00,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:12:00,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 17:12:00,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:12:00,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:12:00,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 118 transitions, 1684 flow. Second operand has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 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) [2024-11-08 17:12:00,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:12:00,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:12:00,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:12:02,683 INFO L124 PetriNetUnfolderBase]: 8091/11825 cut-off events. [2024-11-08 17:12:02,684 INFO L125 PetriNetUnfolderBase]: For 70240/70240 co-relation queries the response was YES. [2024-11-08 17:12:02,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47497 conditions, 11825 events. 8091/11825 cut-off events. For 70240/70240 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 66817 event pairs, 1658 based on Foata normal form. 13/11838 useless extension candidates. Maximal degree in co-relation 47432. Up to 6536 conditions per place. [2024-11-08 17:12:02,805 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 148 selfloop transitions, 48 changer transitions 1/201 dead transitions. [2024-11-08 17:12:02,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 201 transitions, 2506 flow [2024-11-08 17:12:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:12:02,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:12:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-11-08 17:12:02,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5677655677655677 [2024-11-08 17:12:02,807 INFO L175 Difference]: Start difference. First operand has 106 places, 118 transitions, 1684 flow. Second operand 7 states and 155 transitions. [2024-11-08 17:12:02,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 201 transitions, 2506 flow [2024-11-08 17:12:03,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 201 transitions, 2380 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-11-08 17:12:03,111 INFO L231 Difference]: Finished difference. Result has 112 places, 123 transitions, 1797 flow [2024-11-08 17:12:03,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1797, PETRI_PLACES=112, PETRI_TRANSITIONS=123} [2024-11-08 17:12:03,112 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 75 predicate places. [2024-11-08 17:12:03,112 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 123 transitions, 1797 flow [2024-11-08 17:12:03,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 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) [2024-11-08 17:12:03,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:12:03,113 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:12:03,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:12:03,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:12:03,314 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:12:03,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:12:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash -595841308, now seen corresponding path program 1 times [2024-11-08 17:12:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:12:03,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753935484] [2024-11-08 17:12:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:12:03,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:12:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:12:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:03,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:12:03,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753935484] [2024-11-08 17:12:03,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753935484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:12:03,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:12:03,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:12:03,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883959523] [2024-11-08 17:12:03,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:12:03,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:12:03,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:12:03,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:12:03,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:12:03,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:12:03,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 123 transitions, 1797 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2024-11-08 17:12:03,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:12:03,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:12:03,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:12:06,860 INFO L124 PetriNetUnfolderBase]: 12303/18139 cut-off events. [2024-11-08 17:12:06,860 INFO L125 PetriNetUnfolderBase]: For 110206/110206 co-relation queries the response was YES. [2024-11-08 17:12:06,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70941 conditions, 18139 events. 12303/18139 cut-off events. For 110206/110206 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 111533 event pairs, 2921 based on Foata normal form. 12/18151 useless extension candidates. Maximal degree in co-relation 70873. Up to 5932 conditions per place. [2024-11-08 17:12:07,014 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 238 selfloop transitions, 34 changer transitions 1/277 dead transitions. [2024-11-08 17:12:07,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 277 transitions, 3963 flow [2024-11-08 17:12:07,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:12:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:12:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-11-08 17:12:07,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-08 17:12:07,016 INFO L175 Difference]: Start difference. First operand has 112 places, 123 transitions, 1797 flow. Second operand 7 states and 156 transitions. [2024-11-08 17:12:07,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 277 transitions, 3963 flow [2024-11-08 17:12:07,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 277 transitions, 3854 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-08 17:12:07,516 INFO L231 Difference]: Finished difference. Result has 121 places, 143 transitions, 2149 flow [2024-11-08 17:12:07,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2149, PETRI_PLACES=121, PETRI_TRANSITIONS=143} [2024-11-08 17:12:07,517 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 84 predicate places. [2024-11-08 17:12:07,517 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 143 transitions, 2149 flow [2024-11-08 17:12:07,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2024-11-08 17:12:07,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:12:07,517 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:12:07,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:12:07,518 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:12:07,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:12:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1685739174, now seen corresponding path program 2 times [2024-11-08 17:12:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:12:07,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391767120] [2024-11-08 17:12:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:12:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:12:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:12:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:08,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:12:08,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391767120] [2024-11-08 17:12:08,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391767120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:12:08,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:12:08,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:12:08,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199533294] [2024-11-08 17:12:08,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:12:08,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:12:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:12:08,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:12:08,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:12:08,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:12:08,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 143 transitions, 2149 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2024-11-08 17:12:08,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:12:08,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:12:08,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:12:12,349 INFO L124 PetriNetUnfolderBase]: 14728/21792 cut-off events. [2024-11-08 17:12:12,349 INFO L125 PetriNetUnfolderBase]: For 134844/134844 co-relation queries the response was YES. [2024-11-08 17:12:12,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87982 conditions, 21792 events. 14728/21792 cut-off events. For 134844/134844 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 138593 event pairs, 4377 based on Foata normal form. 13/21805 useless extension candidates. Maximal degree in co-relation 87909. Up to 8951 conditions per place. [2024-11-08 17:12:12,529 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 222 selfloop transitions, 41 changer transitions 1/268 dead transitions. [2024-11-08 17:12:12,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 268 transitions, 3736 flow [2024-11-08 17:12:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:12:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:12:12,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-11-08 17:12:12,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6117216117216118 [2024-11-08 17:12:12,532 INFO L175 Difference]: Start difference. First operand has 121 places, 143 transitions, 2149 flow. Second operand 7 states and 167 transitions. [2024-11-08 17:12:12,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 268 transitions, 3736 flow [2024-11-08 17:12:13,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 268 transitions, 3715 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-08 17:12:13,295 INFO L231 Difference]: Finished difference. Result has 129 places, 149 transitions, 2340 flow [2024-11-08 17:12:13,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2340, PETRI_PLACES=129, PETRI_TRANSITIONS=149} [2024-11-08 17:12:13,296 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 92 predicate places. [2024-11-08 17:12:13,296 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 149 transitions, 2340 flow [2024-11-08 17:12:13,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2024-11-08 17:12:13,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:12:13,297 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:12:13,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:12:13,297 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:12:13,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:12:13,297 INFO L85 PathProgramCache]: Analyzing trace with hash -108614956, now seen corresponding path program 2 times [2024-11-08 17:12:13,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:12:13,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019653680] [2024-11-08 17:12:13,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:12:13,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:12:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:12:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:13,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:12:13,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019653680] [2024-11-08 17:12:13,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019653680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:12:13,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:12:13,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:12:13,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937796493] [2024-11-08 17:12:13,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:12:13,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:12:13,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:12:13,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:12:13,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:12:13,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:12:13,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 149 transitions, 2340 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2024-11-08 17:12:13,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:12:13,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:12:13,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:12:18,347 INFO L124 PetriNetUnfolderBase]: 16752/24717 cut-off events. [2024-11-08 17:12:18,347 INFO L125 PetriNetUnfolderBase]: For 169011/169011 co-relation queries the response was YES. [2024-11-08 17:12:18,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100647 conditions, 24717 events. 16752/24717 cut-off events. For 169011/169011 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 157056 event pairs, 3401 based on Foata normal form. 12/24729 useless extension candidates. Maximal degree in co-relation 100571. Up to 10393 conditions per place. [2024-11-08 17:12:18,534 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 215 selfloop transitions, 52 changer transitions 1/272 dead transitions. [2024-11-08 17:12:18,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 272 transitions, 4068 flow [2024-11-08 17:12:18,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:12:18,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:12:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-11-08 17:12:18,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-08 17:12:18,535 INFO L175 Difference]: Start difference. First operand has 129 places, 149 transitions, 2340 flow. Second operand 7 states and 147 transitions. [2024-11-08 17:12:18,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 272 transitions, 4068 flow [2024-11-08 17:12:19,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 272 transitions, 3858 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-11-08 17:12:19,426 INFO L231 Difference]: Finished difference. Result has 136 places, 164 transitions, 2627 flow [2024-11-08 17:12:19,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2627, PETRI_PLACES=136, PETRI_TRANSITIONS=164} [2024-11-08 17:12:19,427 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 99 predicate places. [2024-11-08 17:12:19,427 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 164 transitions, 2627 flow [2024-11-08 17:12:19,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2024-11-08 17:12:19,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:12:19,428 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:12:19,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:12:19,428 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:12:19,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:12:19,429 INFO L85 PathProgramCache]: Analyzing trace with hash 472109324, now seen corresponding path program 3 times [2024-11-08 17:12:19,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:12:19,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745732424] [2024-11-08 17:12:19,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:12:19,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:12:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:12:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:19,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:12:19,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745732424] [2024-11-08 17:12:19,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745732424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:12:19,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:12:19,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:12:19,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71783762] [2024-11-08 17:12:19,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:12:19,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:12:19,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:12:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:12:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:12:19,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:12:19,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 164 transitions, 2627 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2024-11-08 17:12:19,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:12:19,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:12:19,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:12:25,091 INFO L124 PetriNetUnfolderBase]: 17516/25981 cut-off events. [2024-11-08 17:12:25,091 INFO L125 PetriNetUnfolderBase]: For 187145/187145 co-relation queries the response was YES. [2024-11-08 17:12:25,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105619 conditions, 25981 events. 17516/25981 cut-off events. For 187145/187145 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 168938 event pairs, 5154 based on Foata normal form. 13/25994 useless extension candidates. Maximal degree in co-relation 105539. Up to 9675 conditions per place. [2024-11-08 17:12:25,378 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 227 selfloop transitions, 56 changer transitions 1/288 dead transitions. [2024-11-08 17:12:25,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 288 transitions, 4436 flow [2024-11-08 17:12:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:12:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:12:25,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-11-08 17:12:25,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787545787545788 [2024-11-08 17:12:25,379 INFO L175 Difference]: Start difference. First operand has 136 places, 164 transitions, 2627 flow. Second operand 7 states and 158 transitions. [2024-11-08 17:12:25,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 288 transitions, 4436 flow [2024-11-08 17:12:26,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 288 transitions, 4336 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-08 17:12:26,757 INFO L231 Difference]: Finished difference. Result has 144 places, 175 transitions, 2992 flow [2024-11-08 17:12:26,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2992, PETRI_PLACES=144, PETRI_TRANSITIONS=175} [2024-11-08 17:12:26,757 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 107 predicate places. [2024-11-08 17:12:26,757 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 175 transitions, 2992 flow [2024-11-08 17:12:26,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2024-11-08 17:12:26,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:12:26,758 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:12:26,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 17:12:26,758 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:12:26,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:12:26,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1890758486, now seen corresponding path program 4 times [2024-11-08 17:12:26,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:12:26,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451383495] [2024-11-08 17:12:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:12:26,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:12:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:12:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:27,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:12:27,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451383495] [2024-11-08 17:12:27,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451383495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:12:27,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948786623] [2024-11-08 17:12:27,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:12:27,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:12:27,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:12:27,268 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:12:27,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:12:27,402 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:12:27,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:12:27,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:12:27,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:12:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:27,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:12:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:28,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948786623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:12:28,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:12:28,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2024-11-08 17:12:28,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90175686] [2024-11-08 17:12:28,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:12:28,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 17:12:28,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:12:28,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 17:12:28,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-11-08 17:12:28,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:12:28,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 175 transitions, 2992 flow. Second operand has 19 states, 19 states have (on average 9.894736842105264) internal successors, (188), 19 states have internal predecessors, (188), 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) [2024-11-08 17:12:28,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:12:28,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:12:28,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:12:36,842 INFO L124 PetriNetUnfolderBase]: 24866/37374 cut-off events. [2024-11-08 17:12:36,843 INFO L125 PetriNetUnfolderBase]: For 276699/276699 co-relation queries the response was YES. [2024-11-08 17:12:37,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151338 conditions, 37374 events. 24866/37374 cut-off events. For 276699/276699 co-relation queries the response was YES. Maximal size of possible extension queue 1507. Compared 262813 event pairs, 4499 based on Foata normal form. 16/37390 useless extension candidates. Maximal degree in co-relation 151254. Up to 8875 conditions per place. [2024-11-08 17:12:37,268 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 376 selfloop transitions, 136 changer transitions 4/520 dead transitions. [2024-11-08 17:12:37,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 520 transitions, 7265 flow [2024-11-08 17:12:37,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 17:12:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-08 17:12:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 389 transitions. [2024-11-08 17:12:37,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5867269984917044 [2024-11-08 17:12:37,270 INFO L175 Difference]: Start difference. First operand has 144 places, 175 transitions, 2992 flow. Second operand 17 states and 389 transitions. [2024-11-08 17:12:37,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 520 transitions, 7265 flow [2024-11-08 17:12:39,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 520 transitions, 7130 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-08 17:12:39,682 INFO L231 Difference]: Finished difference. Result has 170 places, 248 transitions, 4578 flow [2024-11-08 17:12:39,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2923, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4578, PETRI_PLACES=170, PETRI_TRANSITIONS=248} [2024-11-08 17:12:39,683 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 133 predicate places. [2024-11-08 17:12:39,684 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 248 transitions, 4578 flow [2024-11-08 17:12:39,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.894736842105264) internal successors, (188), 19 states have internal predecessors, (188), 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) [2024-11-08 17:12:39,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:12:39,684 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:12:39,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 17:12:39,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 17:12:39,885 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:12:39,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:12:39,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1538676352, now seen corresponding path program 3 times [2024-11-08 17:12:39,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:12:39,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959674444] [2024-11-08 17:12:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:12:39,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:12:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:12:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:40,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:12:40,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959674444] [2024-11-08 17:12:40,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959674444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:12:40,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997117802] [2024-11-08 17:12:40,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:12:40,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:12:40,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:12:40,336 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:12:40,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b65ed4-aa79-497d-b6bf-39024971f015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:12:40,486 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:12:40,487 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:12:40,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 17:12:40,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:12:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:40,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:12:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:12:40,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997117802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:12:40,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:12:40,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-08 17:12:40,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976474461] [2024-11-08 17:12:40,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:12:40,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 17:12:40,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:12:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 17:12:40,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:12:40,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:12:40,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 248 transitions, 4578 flow. Second operand has 17 states, 17 states have (on average 10.235294117647058) internal successors, (174), 17 states have internal predecessors, (174), 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) [2024-11-08 17:12:40,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:12:40,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:12:40,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand