./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/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_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/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_9089f8c5-fc5d-4e26-821f-aca2c39145c8/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 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:29:51,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:29:51,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:29:51,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:29:51,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:29:51,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:29:51,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:29:51,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:29:51,143 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:29:51,143 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:29:51,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:29:51,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:29:51,145 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:29:51,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:29:51,146 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:29:51,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:29:51,146 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:29:51,147 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:29:51,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:29:51,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:29:51,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:29:51,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:29:51,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:29:51,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:29:51,149 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:29:51,150 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:29:51,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:29:51,151 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:29:51,151 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:29:51,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:29:51,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:29:51,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:29:51,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:29:51,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:29:51,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:29:51,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:29:51,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:29:51,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:29:51,154 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:29:51,155 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:29:51,155 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:29:51,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:29:51,156 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_9089f8c5-fc5d-4e26-821f-aca2c39145c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 [2024-11-08 17:29:51,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:29:51,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:29:51,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:29:51,468 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:29:51,469 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:29:51,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c Unable to find full path for "g++" [2024-11-08 17:29:53,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:29:53,873 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:29:53,874 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-11-08 17:29:53,885 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/data/4b87b56e4/21a4236e8dd5470fad75fefd9113e2f0/FLAG2c60362bb [2024-11-08 17:29:53,905 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/data/4b87b56e4/21a4236e8dd5470fad75fefd9113e2f0 [2024-11-08 17:29:53,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:29:53,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:29:53,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:29:53,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:29:53,918 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:29:53,919 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:29:53" (1/1) ... [2024-11-08 17:29:53,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59cdf6bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:53, skipping insertion in model container [2024-11-08 17:29:53,921 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:29:53" (1/1) ... [2024-11-08 17:29:53,951 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:29:54,236 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_9089f8c5-fc5d-4e26-821f-aca2c39145c8/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2950,2963] [2024-11-08 17:29:54,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:29:54,256 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:29:54,290 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_9089f8c5-fc5d-4e26-821f-aca2c39145c8/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2950,2963] [2024-11-08 17:29:54,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:29:54,316 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:29:54,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54 WrapperNode [2024-11-08 17:29:54,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:29:54,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:29:54,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:29:54,319 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:29:54,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (1/1) ... [2024-11-08 17:29:54,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (1/1) ... [2024-11-08 17:29:54,371 INFO L138 Inliner]: procedures = 23, calls = 35, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 183 [2024-11-08 17:29:54,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:29:54,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:29:54,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:29:54,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:29:54,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (1/1) ... [2024-11-08 17:29:54,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (1/1) ... [2024-11-08 17:29:54,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (1/1) ... [2024-11-08 17:29:54,406 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 17:29:54,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (1/1) ... [2024-11-08 17:29:54,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (1/1) ... [2024-11-08 17:29:54,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (1/1) ... [2024-11-08 17:29:54,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (1/1) ... [2024-11-08 17:29:54,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (1/1) ... [2024-11-08 17:29:54,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (1/1) ... [2024-11-08 17:29:54,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:29:54,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:29:54,428 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:29:54,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:29:54,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (1/1) ... [2024-11-08 17:29:54,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:29:54,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:29:54,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:29:54,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:29:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:29:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:29:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:29:54,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:29:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:29:54,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:29:54,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:29:54,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:29:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:29:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:29:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:29:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:29:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:29:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:29:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:29:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:29:54,501 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 17:29:54,623 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:29:54,626 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:29:55,000 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:29:55,000 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:29:55,448 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:29:55,448 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:29:55,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:29:55 BoogieIcfgContainer [2024-11-08 17:29:55,450 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:29:55,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:29:55,455 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:29:55,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:29:55,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:29:53" (1/3) ... [2024-11-08 17:29:55,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3b3778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:29:55, skipping insertion in model container [2024-11-08 17:29:55,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:54" (2/3) ... [2024-11-08 17:29:55,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3b3778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:29:55, skipping insertion in model container [2024-11-08 17:29:55,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:29:55" (3/3) ... [2024-11-08 17:29:55,463 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2024-11-08 17:29:55,482 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:29:55,483 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:29:55,483 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:29:55,550 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 17:29:55,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 43 transitions, 100 flow [2024-11-08 17:29:55,639 INFO L124 PetriNetUnfolderBase]: 9/41 cut-off events. [2024-11-08 17:29:55,640 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 17:29:55,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 9/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-08 17:29:55,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 43 transitions, 100 flow [2024-11-08 17:29:55,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 40 transitions, 92 flow [2024-11-08 17:29:55,657 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:29:55,664 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;@3e9565a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:29:55,665 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-08 17:29:55,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:29:55,680 INFO L124 PetriNetUnfolderBase]: 9/39 cut-off events. [2024-11-08 17:29:55,680 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 17:29:55,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:55,681 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:29:55,682 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:29:55,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:55,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1456750202, now seen corresponding path program 1 times [2024-11-08 17:29:55,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:55,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623406384] [2024-11-08 17:29:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:55,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:56,109 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 17:29:56,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:56,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623406384] [2024-11-08 17:29:56,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623406384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:29:56,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:29:56,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:29:56,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196694817] [2024-11-08 17:29:56,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:29:56,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:29:56,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:29:56,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:29:56,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:29:56,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-08 17:29:56,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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 17:29:56,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:29:56,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-08 17:29:56,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:29:56,384 INFO L124 PetriNetUnfolderBase]: 274/479 cut-off events. [2024-11-08 17:29:56,385 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-08 17:29:56,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 479 events. 274/479 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2089 event pairs, 63 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 873. Up to 250 conditions per place. [2024-11-08 17:29:56,398 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 35 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-08 17:29:56,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 197 flow [2024-11-08 17:29:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:29:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:29:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-08 17:29:56,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-08 17:29:56,413 INFO L175 Difference]: Start difference. First operand has 38 places, 40 transitions, 92 flow. Second operand 4 states and 108 transitions. [2024-11-08 17:29:56,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 197 flow [2024-11-08 17:29:56,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 187 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:29:56,420 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 100 flow [2024-11-08 17:29:56,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2024-11-08 17:29:56,426 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2024-11-08 17:29:56,426 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 100 flow [2024-11-08 17:29:56,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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 17:29:56,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:56,427 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] [2024-11-08 17:29:56,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:29:56,427 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:29:56,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:56,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1127593681, now seen corresponding path program 1 times [2024-11-08 17:29:56,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:56,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934650568] [2024-11-08 17:29:56,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:56,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:29:56,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:56,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934650568] [2024-11-08 17:29:56,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934650568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:29:56,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:29:56,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:29:56,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090204262] [2024-11-08 17:29:56,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:29:56,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:29:56,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:29:56,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:29:56,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:29:56,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-08 17:29:56,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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 17:29:56,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:29:56,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-08 17:29:56,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:29:56,801 INFO L124 PetriNetUnfolderBase]: 235/470 cut-off events. [2024-11-08 17:29:56,801 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-08 17:29:56,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 470 events. 235/470 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2111 event pairs, 126 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 316. Up to 324 conditions per place. [2024-11-08 17:29:56,806 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 26 selfloop transitions, 2 changer transitions 2/44 dead transitions. [2024-11-08 17:29:56,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 166 flow [2024-11-08 17:29:56,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:29:56,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:29:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-08 17:29:56,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5465116279069767 [2024-11-08 17:29:56,808 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 100 flow. Second operand 4 states and 94 transitions. [2024-11-08 17:29:56,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 166 flow [2024-11-08 17:29:56,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:29:56,811 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 112 flow [2024-11-08 17:29:56,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2024-11-08 17:29:56,812 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2024-11-08 17:29:56,812 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 112 flow [2024-11-08 17:29:56,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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 17:29:56,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:56,812 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:29:56,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:29:56,813 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:29:56,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:56,814 INFO L85 PathProgramCache]: Analyzing trace with hash -314050231, now seen corresponding path program 1 times [2024-11-08 17:29:56,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:56,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274587140] [2024-11-08 17:29:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:56,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:29:57,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:57,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274587140] [2024-11-08 17:29:57,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274587140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:29:57,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:29:57,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:29:57,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973131639] [2024-11-08 17:29:57,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:29:57,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:29:57,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:29:57,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:29:57,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:29:57,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43 [2024-11-08 17:29:57,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 17:29:57,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:29:57,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43 [2024-11-08 17:29:57,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:29:57,224 INFO L124 PetriNetUnfolderBase]: 292/585 cut-off events. [2024-11-08 17:29:57,225 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-08 17:29:57,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 585 events. 292/585 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2766 event pairs, 94 based on Foata normal form. 1/484 useless extension candidates. Maximal degree in co-relation 1058. Up to 216 conditions per place. [2024-11-08 17:29:57,229 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 35 selfloop transitions, 2 changer transitions 1/56 dead transitions. [2024-11-08 17:29:57,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 56 transitions, 222 flow [2024-11-08 17:29:57,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:29:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:29:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-08 17:29:57,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7441860465116279 [2024-11-08 17:29:57,232 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 112 flow. Second operand 3 states and 96 transitions. [2024-11-08 17:29:57,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 56 transitions, 222 flow [2024-11-08 17:29:57,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 218 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-08 17:29:57,235 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 120 flow [2024-11-08 17:29:57,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2024-11-08 17:29:57,239 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2024-11-08 17:29:57,239 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 120 flow [2024-11-08 17:29:57,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 17:29:57,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:57,240 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:29:57,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:29:57,240 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:29:57,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:57,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1837085553, now seen corresponding path program 1 times [2024-11-08 17:29:57,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:57,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730695718] [2024-11-08 17:29:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:57,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:29:57,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:57,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730695718] [2024-11-08 17:29:57,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730695718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:29:57,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:29:57,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:29:57,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764768764] [2024-11-08 17:29:57,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:29:57,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:29:57,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:29:57,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:29:57,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:29:57,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43 [2024-11-08 17:29:57,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 17:29:57,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:29:57,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43 [2024-11-08 17:29:57,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:29:57,491 INFO L124 PetriNetUnfolderBase]: 285/581 cut-off events. [2024-11-08 17:29:57,493 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-08 17:29:57,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 581 events. 285/581 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2758 event pairs, 102 based on Foata normal form. 10/512 useless extension candidates. Maximal degree in co-relation 1135. Up to 314 conditions per place. [2024-11-08 17:29:57,499 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 35 selfloop transitions, 2 changer transitions 1/56 dead transitions. [2024-11-08 17:29:57,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 229 flow [2024-11-08 17:29:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:29:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:29:57,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-08 17:29:57,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7364341085271318 [2024-11-08 17:29:57,503 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 120 flow. Second operand 3 states and 95 transitions. [2024-11-08 17:29:57,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 229 flow [2024-11-08 17:29:57,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:29:57,506 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 130 flow [2024-11-08 17:29:57,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2024-11-08 17:29:57,507 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2024-11-08 17:29:57,507 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 130 flow [2024-11-08 17:29:57,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 17:29:57,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:57,507 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:29:57,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:29:57,509 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:29:57,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:57,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1026984292, now seen corresponding path program 1 times [2024-11-08 17:29:57,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:57,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364556040] [2024-11-08 17:29:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:57,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:29:57,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:57,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364556040] [2024-11-08 17:29:57,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364556040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:29:57,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:29:57,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:29:57,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164144791] [2024-11-08 17:29:57,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:29:57,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:29:57,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:29:57,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:29:57,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:29:57,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-08 17:29:57,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 17:29:57,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:29:57,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-08 17:29:57,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:29:57,845 INFO L124 PetriNetUnfolderBase]: 352/738 cut-off events. [2024-11-08 17:29:57,845 INFO L125 PetriNetUnfolderBase]: For 68/89 co-relation queries the response was YES. [2024-11-08 17:29:57,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544 conditions, 738 events. 352/738 cut-off events. For 68/89 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3707 event pairs, 247 based on Foata normal form. 12/645 useless extension candidates. Maximal degree in co-relation 1190. Up to 437 conditions per place. [2024-11-08 17:29:57,850 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 29 selfloop transitions, 2 changer transitions 21/66 dead transitions. [2024-11-08 17:29:57,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 298 flow [2024-11-08 17:29:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:29:57,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:29:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-08 17:29:57,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5906976744186047 [2024-11-08 17:29:57,853 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 130 flow. Second operand 5 states and 127 transitions. [2024-11-08 17:29:57,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 298 flow [2024-11-08 17:29:57,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:29:57,856 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 146 flow [2024-11-08 17:29:57,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-11-08 17:29:57,857 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2024-11-08 17:29:57,857 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 146 flow [2024-11-08 17:29:57,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 17:29:57,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:57,858 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:29:57,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:29:57,858 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:29:57,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1154952764, now seen corresponding path program 1 times [2024-11-08 17:29:57,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:57,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475155153] [2024-11-08 17:29:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:57,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:29:59,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:59,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475155153] [2024-11-08 17:29:59,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475155153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:29:59,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241277233] [2024-11-08 17:29:59,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:59,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:29:59,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:29:59,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:29:59,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:29:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:59,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 17:29:59,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:29:59,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:29:59,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 17:29:59,773 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:29:59,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:29:59,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:30:00,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2024-11-08 17:30:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:30:00,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:30:06,748 INFO L349 Elim1Store]: treesize reduction 16, result has 65.2 percent of original size [2024-11-08 17:30:06,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 178 treesize of output 152 [2024-11-08 17:30:06,770 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:30:06,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 144 [2024-11-08 17:30:07,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-08 17:30:07,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-08 17:30:07,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 13 [2024-11-08 17:30:07,104 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-08 17:30:07,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 18 [2024-11-08 17:30:07,200 INFO L349 Elim1Store]: treesize reduction 32, result has 63.2 percent of original size [2024-11-08 17:30:07,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 430 treesize of output 364 [2024-11-08 17:30:07,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:30:07,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 238 [2024-11-08 17:30:07,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-08 17:30:07,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-08 17:30:07,648 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:30:07,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 166 treesize of output 190 [2024-11-08 17:30:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:30:09,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241277233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:30:09,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:30:09,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 33 [2024-11-08 17:30:09,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398655880] [2024-11-08 17:30:09,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:30:09,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 17:30:09,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:30:09,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 17:30:09,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=948, Unknown=1, NotChecked=0, Total=1122 [2024-11-08 17:30:10,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 43 [2024-11-08 17:30:10,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 146 flow. Second operand has 34 states, 34 states have (on average 7.823529411764706) internal successors, (266), 34 states have internal predecessors, (266), 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 17:30:10,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:30:10,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 43 [2024-11-08 17:30:10,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:30:14,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:30:18,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:30:24,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:30:41,326 INFO L124 PetriNetUnfolderBase]: 3303/5368 cut-off events. [2024-11-08 17:30:41,327 INFO L125 PetriNetUnfolderBase]: For 741/741 co-relation queries the response was YES. [2024-11-08 17:30:41,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12208 conditions, 5368 events. 3303/5368 cut-off events. For 741/741 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 30120 event pairs, 464 based on Foata normal form. 9/4676 useless extension candidates. Maximal degree in co-relation 12187. Up to 875 conditions per place. [2024-11-08 17:30:41,364 INFO L140 encePairwiseOnDemand]: 17/43 looper letters, 320 selfloop transitions, 113 changer transitions 165/601 dead transitions. [2024-11-08 17:30:41,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 601 transitions, 2829 flow [2024-11-08 17:30:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-08 17:30:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2024-11-08 17:30:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 921 transitions. [2024-11-08 17:30:41,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3346656976744186 [2024-11-08 17:30:41,372 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 146 flow. Second operand 64 states and 921 transitions. [2024-11-08 17:30:41,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 601 transitions, 2829 flow [2024-11-08 17:30:41,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 601 transitions, 2809 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-08 17:30:41,394 INFO L231 Difference]: Finished difference. Result has 146 places, 159 transitions, 1078 flow [2024-11-08 17:30:41,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=1078, PETRI_PLACES=146, PETRI_TRANSITIONS=159} [2024-11-08 17:30:41,397 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 108 predicate places. [2024-11-08 17:30:41,398 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 159 transitions, 1078 flow [2024-11-08 17:30:41,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.823529411764706) internal successors, (266), 34 states have internal predecessors, (266), 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 17:30:41,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:30:41,399 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:30:41,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:30:41,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:30:41,604 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:30:41,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:30:41,605 INFO L85 PathProgramCache]: Analyzing trace with hash 858712396, now seen corresponding path program 2 times [2024-11-08 17:30:41,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:30:41,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314018941] [2024-11-08 17:30:41,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:30:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:30:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:30:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:30:44,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:30:44,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314018941] [2024-11-08 17:30:44,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314018941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:30:44,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381266494] [2024-11-08 17:30:44,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:30:44,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:30:44,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:30:44,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:30:44,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:30:45,030 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:30:45,030 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:30:45,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 17:30:45,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:30:45,894 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2024-11-08 17:30:45,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 10 [2024-11-08 17:30:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:30:46,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:30:46,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:30:46,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 121 [2024-11-08 17:30:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:30:47,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381266494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:30:47,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:30:47,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 36 [2024-11-08 17:30:47,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681189821] [2024-11-08 17:30:47,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:30:47,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 17:30:47,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:30:47,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 17:30:47,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1145, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 17:30:52,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:30:56,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:30:56,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-11-08 17:30:56,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 159 transitions, 1078 flow. Second operand has 37 states, 37 states have (on average 9.486486486486486) internal successors, (351), 37 states have internal predecessors, (351), 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 17:30:56,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:30:56,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-11-08 17:30:56,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:31:07,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:31:10,235 INFO L124 PetriNetUnfolderBase]: 4345/7180 cut-off events. [2024-11-08 17:31:10,235 INFO L125 PetriNetUnfolderBase]: For 47505/47505 co-relation queries the response was YES. [2024-11-08 17:31:10,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31312 conditions, 7180 events. 4345/7180 cut-off events. For 47505/47505 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 42002 event pairs, 244 based on Foata normal form. 19/7184 useless extension candidates. Maximal degree in co-relation 31223. Up to 1385 conditions per place. [2024-11-08 17:31:10,334 INFO L140 encePairwiseOnDemand]: 19/43 looper letters, 349 selfloop transitions, 181 changer transitions 57/598 dead transitions. [2024-11-08 17:31:10,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 598 transitions, 5456 flow [2024-11-08 17:31:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-08 17:31:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-08 17:31:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 699 transitions. [2024-11-08 17:31:10,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3533872598584429 [2024-11-08 17:31:10,339 INFO L175 Difference]: Start difference. First operand has 146 places, 159 transitions, 1078 flow. Second operand 46 states and 699 transitions. [2024-11-08 17:31:10,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 598 transitions, 5456 flow [2024-11-08 17:31:10,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 598 transitions, 4674 flow, removed 386 selfloop flow, removed 11 redundant places. [2024-11-08 17:31:10,836 INFO L231 Difference]: Finished difference. Result has 196 places, 301 transitions, 2587 flow [2024-11-08 17:31:10,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2587, PETRI_PLACES=196, PETRI_TRANSITIONS=301} [2024-11-08 17:31:10,838 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 158 predicate places. [2024-11-08 17:31:10,838 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 301 transitions, 2587 flow [2024-11-08 17:31:10,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 9.486486486486486) internal successors, (351), 37 states have internal predecessors, (351), 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 17:31:10,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:31:10,839 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:31:10,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:31:11,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:31:11,042 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:31:11,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:31:11,043 INFO L85 PathProgramCache]: Analyzing trace with hash 363399914, now seen corresponding path program 3 times [2024-11-08 17:31:11,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:31:11,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675803992] [2024-11-08 17:31:11,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:31:11,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:31:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:31:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:31:11,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:31:11,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675803992] [2024-11-08 17:31:11,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675803992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:31:11,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503742120] [2024-11-08 17:31:11,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:31:11,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:31:11,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:31:11,186 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:31:11,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:31:11,323 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:31:11,324 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:31:11,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:31:11,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:31:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:31:11,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:31:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:31:12,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503742120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:31:12,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:31:12,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2024-11-08 17:31:12,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190630398] [2024-11-08 17:31:12,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:31:12,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 17:31:12,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:31:12,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 17:31:12,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:31:12,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-08 17:31:12,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 301 transitions, 2587 flow. Second operand has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 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 17:31:12,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:31:12,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-08 17:31:12,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:31:14,302 INFO L124 PetriNetUnfolderBase]: 2506/5458 cut-off events. [2024-11-08 17:31:14,302 INFO L125 PetriNetUnfolderBase]: For 66181/66471 co-relation queries the response was YES. [2024-11-08 17:31:14,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28992 conditions, 5458 events. 2506/5458 cut-off events. For 66181/66471 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 40856 event pairs, 365 based on Foata normal form. 221/5602 useless extension candidates. Maximal degree in co-relation 28841. Up to 746 conditions per place. [2024-11-08 17:31:14,357 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 206 selfloop transitions, 44 changer transitions 194/471 dead transitions. [2024-11-08 17:31:14,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 471 transitions, 5123 flow [2024-11-08 17:31:14,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:31:14,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:31:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 343 transitions. [2024-11-08 17:31:14,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-11-08 17:31:14,360 INFO L175 Difference]: Start difference. First operand has 196 places, 301 transitions, 2587 flow. Second operand 14 states and 343 transitions. [2024-11-08 17:31:14,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 471 transitions, 5123 flow [2024-11-08 17:31:14,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 471 transitions, 4589 flow, removed 232 selfloop flow, removed 11 redundant places. [2024-11-08 17:31:14,803 INFO L231 Difference]: Finished difference. Result has 196 places, 171 transitions, 1502 flow [2024-11-08 17:31:14,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1502, PETRI_PLACES=196, PETRI_TRANSITIONS=171} [2024-11-08 17:31:14,804 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 158 predicate places. [2024-11-08 17:31:14,804 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 171 transitions, 1502 flow [2024-11-08 17:31:14,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 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 17:31:14,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:31:14,805 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:31:14,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:31:15,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:31:15,006 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:31:15,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:31:15,007 INFO L85 PathProgramCache]: Analyzing trace with hash -168454025, now seen corresponding path program 1 times [2024-11-08 17:31:15,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:31:15,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445850012] [2024-11-08 17:31:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:31:15,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:31:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:31:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:31:15,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:31:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445850012] [2024-11-08 17:31:15,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445850012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:31:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612908802] [2024-11-08 17:31:15,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:31:15,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:31:15,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:31:15,247 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:31:15,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:31:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:31:15,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:31:15,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:31:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:31:15,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:31:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:31:15,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612908802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:31:15,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:31:15,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-08 17:31:15,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332707566] [2024-11-08 17:31:15,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:31:15,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:31:15,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:31:15,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:31:15,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:31:15,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-08 17:31:15,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 171 transitions, 1502 flow. Second operand has 15 states, 15 states have (on average 15.133333333333333) internal successors, (227), 15 states have internal predecessors, (227), 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 17:31:15,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:31:15,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-08 17:31:15,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:31:16,967 INFO L124 PetriNetUnfolderBase]: 1682/3360 cut-off events. [2024-11-08 17:31:16,968 INFO L125 PetriNetUnfolderBase]: For 30902/30969 co-relation queries the response was YES. [2024-11-08 17:31:16,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17138 conditions, 3360 events. 1682/3360 cut-off events. For 30902/30969 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19818 event pairs, 303 based on Foata normal form. 66/3377 useless extension candidates. Maximal degree in co-relation 16981. Up to 1640 conditions per place. [2024-11-08 17:31:17,003 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 128 selfloop transitions, 23 changer transitions 84/257 dead transitions. [2024-11-08 17:31:17,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 257 transitions, 2656 flow [2024-11-08 17:31:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:31:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:31:17,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 234 transitions. [2024-11-08 17:31:17,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-11-08 17:31:17,009 INFO L175 Difference]: Start difference. First operand has 196 places, 171 transitions, 1502 flow. Second operand 13 states and 234 transitions. [2024-11-08 17:31:17,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 257 transitions, 2656 flow [2024-11-08 17:31:17,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 257 transitions, 2414 flow, removed 105 selfloop flow, removed 27 redundant places. [2024-11-08 17:31:17,100 INFO L231 Difference]: Finished difference. Result has 142 places, 146 transitions, 1217 flow [2024-11-08 17:31:17,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1217, PETRI_PLACES=142, PETRI_TRANSITIONS=146} [2024-11-08 17:31:17,102 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2024-11-08 17:31:17,106 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 146 transitions, 1217 flow [2024-11-08 17:31:17,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.133333333333333) internal successors, (227), 15 states have internal predecessors, (227), 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 17:31:17,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:31:17,106 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:31:17,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:31:17,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:31:17,307 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:31:17,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:31:17,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1532090525, now seen corresponding path program 2 times [2024-11-08 17:31:17,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:31:17,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223216023] [2024-11-08 17:31:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:31:17,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:31:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:31:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 17:31:17,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:31:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223216023] [2024-11-08 17:31:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223216023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:31:17,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:31:17,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:31:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686915643] [2024-11-08 17:31:17,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:31:17,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:31:17,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:31:17,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:31:17,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:31:18,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43 [2024-11-08 17:31:18,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 146 transitions, 1217 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 17:31:18,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:31:18,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43 [2024-11-08 17:31:18,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:31:18,701 INFO L124 PetriNetUnfolderBase]: 778/1712 cut-off events. [2024-11-08 17:31:18,701 INFO L125 PetriNetUnfolderBase]: For 9709/9719 co-relation queries the response was YES. [2024-11-08 17:31:18,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7054 conditions, 1712 events. 778/1712 cut-off events. For 9709/9719 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9120 event pairs, 240 based on Foata normal form. 9/1719 useless extension candidates. Maximal degree in co-relation 6933. Up to 1115 conditions per place. [2024-11-08 17:31:18,721 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 70 selfloop transitions, 16 changer transitions 0/110 dead transitions. [2024-11-08 17:31:18,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 110 transitions, 1061 flow [2024-11-08 17:31:18,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:31:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:31:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-11-08 17:31:18,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6162790697674418 [2024-11-08 17:31:18,723 INFO L175 Difference]: Start difference. First operand has 142 places, 146 transitions, 1217 flow. Second operand 6 states and 159 transitions. [2024-11-08 17:31:18,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 110 transitions, 1061 flow [2024-11-08 17:31:18,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 110 transitions, 975 flow, removed 29 selfloop flow, removed 15 redundant places. [2024-11-08 17:31:18,744 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 833 flow [2024-11-08 17:31:18,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=833, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2024-11-08 17:31:18,745 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 71 predicate places. [2024-11-08 17:31:18,746 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 833 flow [2024-11-08 17:31:18,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 17:31:18,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:31:18,746 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:31:18,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:31:18,747 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:31:18,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:31:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash -554931344, now seen corresponding path program 4 times [2024-11-08 17:31:18,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:31:18,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128220545] [2024-11-08 17:31:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:31:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:31:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:31:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:31:21,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:31:21,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128220545] [2024-11-08 17:31:21,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128220545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:31:21,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957014601] [2024-11-08 17:31:21,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:31:21,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:31:21,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:31:21,775 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:31:21,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:31:21,886 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:31:21,886 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:31:21,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-08 17:31:21,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:31:21,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:31:22,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 17:31:22,312 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:31:22,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:31:22,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:31:22,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:31:24,805 INFO L349 Elim1Store]: treesize reduction 89, result has 35.5 percent of original size [2024-11-08 17:31:24,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 74 treesize of output 64 [2024-11-08 17:31:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:31:25,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:31:33,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:31:33,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 118 [2024-11-08 17:31:33,899 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-08 17:31:33,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 297 treesize of output 398 [2024-11-08 17:31:33,938 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:31:34,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:31:34,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 182 treesize of output 283 [2024-11-08 17:32:52,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:32:52,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 113 [2024-11-08 17:32:53,450 INFO L349 Elim1Store]: treesize reduction 20, result has 90.4 percent of original size [2024-11-08 17:32:53,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 337 treesize of output 420 [2024-11-08 17:32:53,491 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:32:53,499 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:32:53,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:32:53,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 219 treesize of output 307 [2024-11-08 17:33:50,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:50,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 90 [2024-11-08 17:33:50,570 INFO L349 Elim1Store]: treesize reduction 8, result has 91.4 percent of original size [2024-11-08 17:33:50,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 248 treesize of output 252 [2024-11-08 17:33:50,593 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:33:50,642 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:50,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 162 treesize of output 174 [2024-11-08 17:33:51,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:51,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 113 [2024-11-08 17:33:51,885 INFO L349 Elim1Store]: treesize reduction 12, result has 94.2 percent of original size [2024-11-08 17:33:51,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 337 treesize of output 428 [2024-11-08 17:33:51,919 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:33:52,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:52,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 219 treesize of output 315 [2024-11-08 17:34:44,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:34:44,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 118 [2024-11-08 17:34:44,692 INFO L349 Elim1Store]: treesize reduction 16, result has 92.3 percent of original size [2024-11-08 17:34:44,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 297 treesize of output 390 [2024-11-08 17:34:44,731 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:34:44,737 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:34:44,863 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:34:44,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 182 treesize of output 275 [2024-11-08 17:35:08,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:35:08,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 90 [2024-11-08 17:35:09,060 INFO L349 Elim1Store]: treesize reduction 8, result has 91.4 percent of original size [2024-11-08 17:35:09,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 248 treesize of output 252 [2024-11-08 17:35:09,079 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:35:09,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:35:09,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 162 treesize of output 174 [2024-11-08 17:35:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:35:11,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957014601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:35:11,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:35:11,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 20] total 54 [2024-11-08 17:35:11,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532864234] [2024-11-08 17:35:11,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:35:11,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-08 17:35:11,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:35:11,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-08 17:35:11,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=2557, Unknown=8, NotChecked=0, Total=2970 [2024-11-08 17:35:12,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 43 [2024-11-08 17:35:12,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 833 flow. Second operand has 55 states, 55 states have (on average 7.490909090909091) internal successors, (412), 55 states have internal predecessors, (412), 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 17:35:12,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:35:12,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 43 [2024-11-08 17:35:12,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:35:31,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:35:35,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:35:39,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:35:43,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:35:53,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:35:57,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:36:01,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:36:21,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:36:25,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:36:29,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:36:45,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:36:48,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:36:52,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:36:56,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:37:03,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:37:07,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:37:11,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:37:15,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:37:19,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:37:24,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:37:28,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:37:32,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:37:37,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:37:41,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:37:48,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:37:52,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:37:56,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:38:02,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:38:06,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:38:10,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:38:14,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:38:18,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:38:19,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:38:24,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:38:28,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:38:32,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:38:37,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:38:41,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:38:45,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-08 17:39:14,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:39:18,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:39:23,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:39:27,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:39:39,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:39:43,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:39:47,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:39:59,759 INFO L124 PetriNetUnfolderBase]: 7969/12883 cut-off events. [2024-11-08 17:39:59,760 INFO L125 PetriNetUnfolderBase]: For 47154/47154 co-relation queries the response was YES. [2024-11-08 17:39:59,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48329 conditions, 12883 events. 7969/12883 cut-off events. For 47154/47154 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 73109 event pairs, 833 based on Foata normal form. 27/12906 useless extension candidates. Maximal degree in co-relation 39808. Up to 2234 conditions per place. [2024-11-08 17:39:59,847 INFO L140 encePairwiseOnDemand]: 17/43 looper letters, 617 selfloop transitions, 280 changer transitions 162/1062 dead transitions. [2024-11-08 17:39:59,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 1062 transitions, 9025 flow [2024-11-08 17:39:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-08 17:39:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2024-11-08 17:39:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 1362 transitions. [2024-11-08 17:39:59,853 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33696190004948046 [2024-11-08 17:39:59,853 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 833 flow. Second operand 94 states and 1362 transitions. [2024-11-08 17:39:59,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 1062 transitions, 9025 flow [2024-11-08 17:39:59,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 1062 transitions, 8977 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-08 17:39:59,941 INFO L231 Difference]: Finished difference. Result has 267 places, 414 transitions, 4837 flow [2024-11-08 17:39:59,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=94, PETRI_FLOW=4837, PETRI_PLACES=267, PETRI_TRANSITIONS=414} [2024-11-08 17:39:59,942 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 229 predicate places. [2024-11-08 17:39:59,942 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 414 transitions, 4837 flow [2024-11-08 17:39:59,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 7.490909090909091) internal successors, (412), 55 states have internal predecessors, (412), 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 17:39:59,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:59,943 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:39:59,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:40:00,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 17:40:00,147 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:40:00,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:40:00,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1699342136, now seen corresponding path program 5 times [2024-11-08 17:40:00,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:40:00,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127690937] [2024-11-08 17:40:00,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:40:00,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:40:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:40:03,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:40:03,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127690937] [2024-11-08 17:40:03,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127690937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:40:03,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579222990] [2024-11-08 17:40:03,762 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:40:03,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:03,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:40:03,764 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:40:03,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:40:03,879 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-08 17:40:03,879 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:40:03,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 17:40:03,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:40:06,226 INFO L349 Elim1Store]: treesize reduction 38, result has 54.8 percent of original size [2024-11-08 17:40:06,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 61 [2024-11-08 17:40:06,484 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:40:06,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:40:13,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:40:13,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 233 treesize of output 1432 [2024-11-08 17:40:31,253 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-08 17:40:31,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-08 17:40:31,254 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-08 17:40:31,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:40:31,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 17:40:31,456 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:324) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 68 more [2024-11-08 17:40:31,461 INFO L158 Benchmark]: Toolchain (without parser) took 637551.15ms. Allocated memory was 157.3MB in the beginning and 1.0GB in the end (delta: 855.6MB). Free memory was 114.2MB in the beginning and 472.7MB in the end (delta: -358.5MB). Peak memory consumption was 767.8MB. Max. memory is 16.1GB. [2024-11-08 17:40:31,461 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 157.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 17:40:31,461 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.13ms. Allocated memory is still 157.3MB. Free memory was 113.5MB in the beginning and 100.2MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 17:40:31,462 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.04ms. Allocated memory is still 157.3MB. Free memory was 99.5MB in the beginning and 97.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 17:40:31,462 INFO L158 Benchmark]: Boogie Preprocessor took 55.13ms. Allocated memory is still 157.3MB. Free memory was 97.4MB in the beginning and 95.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 17:40:31,462 INFO L158 Benchmark]: RCFGBuilder took 1022.76ms. Allocated memory was 157.3MB in the beginning and 192.9MB in the end (delta: 35.7MB). Free memory was 95.3MB in the beginning and 153.9MB in the end (delta: -58.6MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2024-11-08 17:40:31,463 INFO L158 Benchmark]: TraceAbstraction took 636004.77ms. Allocated memory was 192.9MB in the beginning and 1.0GB in the end (delta: 820.0MB). Free memory was 152.9MB in the beginning and 472.7MB in the end (delta: -319.8MB). Peak memory consumption was 770.2MB. Max. memory is 16.1GB. [2024-11-08 17:40:31,465 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 157.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.13ms. Allocated memory is still 157.3MB. Free memory was 113.5MB in the beginning and 100.2MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.04ms. Allocated memory is still 157.3MB. Free memory was 99.5MB in the beginning and 97.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.13ms. Allocated memory is still 157.3MB. Free memory was 97.4MB in the beginning and 95.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1022.76ms. Allocated memory was 157.3MB in the beginning and 192.9MB in the end (delta: 35.7MB). Free memory was 95.3MB in the beginning and 153.9MB in the end (delta: -58.6MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * TraceAbstraction took 636004.77ms. Allocated memory was 192.9MB in the beginning and 1.0GB in the end (delta: 820.0MB). Free memory was 152.9MB in the beginning and 472.7MB in the end (delta: -319.8MB). Peak memory consumption was 770.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/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_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/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 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:40:34,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:40:34,153 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-08 17:40:34,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:40:34,166 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:40:34,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:40:34,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:40:34,220 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:40:34,221 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:40:34,222 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:40:34,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:40:34,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:40:34,225 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:40:34,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:40:34,227 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:40:34,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:40:34,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:40:34,229 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:40:34,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:40:34,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:40:34,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:40:34,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:40:34,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:40:34,235 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:40:34,236 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 17:40:34,236 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:40:34,237 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 17:40:34,237 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:40:34,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:40:34,239 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:40:34,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:40:34,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:40:34,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:40:34,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:40:34,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:40:34,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:40:34,241 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:40:34,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:40:34,242 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 17:40:34,242 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 17:40:34,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:40:34,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:40:34,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:40:34,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:40:34,246 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_9089f8c5-fc5d-4e26-821f-aca2c39145c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 [2024-11-08 17:40:34,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:40:34,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:40:34,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:40:34,759 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:40:34,759 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:40:34,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c Unable to find full path for "g++" [2024-11-08 17:40:37,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:40:37,348 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:40:37,348 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-11-08 17:40:37,357 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/data/725c78a89/0f5f2f2459e14d848b2c211fea7219fe/FLAGd1ede3911 [2024-11-08 17:40:37,658 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/data/725c78a89/0f5f2f2459e14d848b2c211fea7219fe [2024-11-08 17:40:37,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:40:37,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:40:37,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:40:37,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:40:37,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:40:37,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:40:37" (1/1) ... [2024-11-08 17:40:37,674 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76080231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:37, skipping insertion in model container [2024-11-08 17:40:37,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:40:37" (1/1) ... [2024-11-08 17:40:37,701 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:40:37,950 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_9089f8c5-fc5d-4e26-821f-aca2c39145c8/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2950,2963] [2024-11-08 17:40:37,960 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:40:37,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:40:37,979 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:40:38,021 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_9089f8c5-fc5d-4e26-821f-aca2c39145c8/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2950,2963] [2024-11-08 17:40:38,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:40:38,061 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:40:38,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38 WrapperNode [2024-11-08 17:40:38,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:40:38,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:40:38,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:40:38,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:40:38,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (1/1) ... [2024-11-08 17:40:38,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (1/1) ... [2024-11-08 17:40:38,172 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 178 [2024-11-08 17:40:38,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:40:38,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:40:38,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:40:38,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:40:38,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (1/1) ... [2024-11-08 17:40:38,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (1/1) ... [2024-11-08 17:40:38,203 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (1/1) ... [2024-11-08 17:40:38,220 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 17:40:38,221 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (1/1) ... [2024-11-08 17:40:38,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (1/1) ... [2024-11-08 17:40:38,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (1/1) ... [2024-11-08 17:40:38,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (1/1) ... [2024-11-08 17:40:38,236 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (1/1) ... [2024-11-08 17:40:38,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (1/1) ... [2024-11-08 17:40:38,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:40:38,245 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:40:38,245 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:40:38,245 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:40:38,246 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (1/1) ... [2024-11-08 17:40:38,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:40:38,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:40:38,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:40:38,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:40:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:40:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:40:38,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:40:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:40:38,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:40:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 17:40:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-08 17:40:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:40:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:40:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:40:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-08 17:40:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-08 17:40:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:40:38,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:40:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-08 17:40:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-08 17:40:38,335 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 17:40:38,533 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:40:38,536 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:40:39,106 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:40:39,106 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:40:39,537 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:40:39,539 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:40:39,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:40:39 BoogieIcfgContainer [2024-11-08 17:40:39,540 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:40:39,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:40:39,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:40:39,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:40:39,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:40:37" (1/3) ... [2024-11-08 17:40:39,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbb80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:40:39, skipping insertion in model container [2024-11-08 17:40:39,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:40:38" (2/3) ... [2024-11-08 17:40:39,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbb80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:40:39, skipping insertion in model container [2024-11-08 17:40:39,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:40:39" (3/3) ... [2024-11-08 17:40:39,553 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2024-11-08 17:40:39,573 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:40:39,574 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:40:39,574 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:40:39,649 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 17:40:39,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 43 transitions, 100 flow [2024-11-08 17:40:39,764 INFO L124 PetriNetUnfolderBase]: 9/41 cut-off events. [2024-11-08 17:40:39,765 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 17:40:39,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 9/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-08 17:40:39,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 43 transitions, 100 flow [2024-11-08 17:40:39,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 40 transitions, 92 flow [2024-11-08 17:40:39,792 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:40:39,802 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;@7eb8726f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:40:39,802 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-08 17:40:39,830 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:40:39,830 INFO L124 PetriNetUnfolderBase]: 9/39 cut-off events. [2024-11-08 17:40:39,830 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 17:40:39,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:40:39,831 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] [2024-11-08 17:40:39,832 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:40:39,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:40:39,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1527200506, now seen corresponding path program 1 times [2024-11-08 17:40:39,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:40:39,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218062122] [2024-11-08 17:40:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:40:39,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:39,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:40:39,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:40:39,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:40:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:40,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:40:40,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:40:40,113 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 17:40:40,114 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:40:40,115 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:40:40,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218062122] [2024-11-08 17:40:40,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218062122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:40:40,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:40:40,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:40:40,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101531507] [2024-11-08 17:40:40,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:40:40,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:40:40,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:40:40,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:40:40,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:40:40,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43 [2024-11-08 17:40:40,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 17:40:40,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:40:40,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43 [2024-11-08 17:40:40,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:40:40,486 INFO L124 PetriNetUnfolderBase]: 203/409 cut-off events. [2024-11-08 17:40:40,486 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-08 17:40:40,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 409 events. 203/409 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1788 event pairs, 57 based on Foata normal form. 1/322 useless extension candidates. Maximal degree in co-relation 653. Up to 144 conditions per place. [2024-11-08 17:40:40,497 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 32 selfloop transitions, 2 changer transitions 1/53 dead transitions. [2024-11-08 17:40:40,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 194 flow [2024-11-08 17:40:40,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:40:40,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:40:40,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-08 17:40:40,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7441860465116279 [2024-11-08 17:40:40,517 INFO L175 Difference]: Start difference. First operand has 38 places, 40 transitions, 92 flow. Second operand 3 states and 96 transitions. [2024-11-08 17:40:40,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 194 flow [2024-11-08 17:40:40,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 53 transitions, 182 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:40:40,529 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 96 flow [2024-11-08 17:40:40,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2024-11-08 17:40:40,537 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places. [2024-11-08 17:40:40,538 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 96 flow [2024-11-08 17:40:40,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 17:40:40,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:40:40,540 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] [2024-11-08 17:40:40,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:40:40,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:40,741 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:40:40,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:40:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash -741875206, now seen corresponding path program 1 times [2024-11-08 17:40:40,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:40:40,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749412469] [2024-11-08 17:40:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:40:40,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:40,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:40:40,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:40:40,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:40:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:40,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:40:40,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:40:41,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:40:41,071 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:40:41,073 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:40:41,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749412469] [2024-11-08 17:40:41,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749412469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:40:41,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:40:41,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:40:41,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050910037] [2024-11-08 17:40:41,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:40:41,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:40:41,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:40:41,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:40:41,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:40:41,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-08 17:40:41,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 17:40:41,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:40:41,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-08 17:40:41,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:40:41,419 INFO L124 PetriNetUnfolderBase]: 347/619 cut-off events. [2024-11-08 17:40:41,419 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-08 17:40:41,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 619 events. 347/619 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2960 event pairs, 95 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 580. Up to 330 conditions per place. [2024-11-08 17:40:41,426 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 36 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-08 17:40:41,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 210 flow [2024-11-08 17:40:41,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:40:41,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:40:41,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-08 17:40:41,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-11-08 17:40:41,429 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 96 flow. Second operand 5 states and 125 transitions. [2024-11-08 17:40:41,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 210 flow [2024-11-08 17:40:41,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 55 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:40:41,432 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 112 flow [2024-11-08 17:40:41,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2024-11-08 17:40:41,433 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2024-11-08 17:40:41,433 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 112 flow [2024-11-08 17:40:41,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 17:40:41,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:40:41,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:40:41,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:40:41,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:41,635 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:40:41,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:40:41,636 INFO L85 PathProgramCache]: Analyzing trace with hash 888526471, now seen corresponding path program 1 times [2024-11-08 17:40:41,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:40:41,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885136157] [2024-11-08 17:40:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:40:41,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:41,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:40:41,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:40:41,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:40:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:41,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:40:41,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:40:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:40:41,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:40:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:40:41,886 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:40:41,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885136157] [2024-11-08 17:40:41,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885136157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:40:41,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:40:41,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2024-11-08 17:40:41,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861579387] [2024-11-08 17:40:41,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:40:41,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:40:41,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:40:41,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:40:41,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:40:41,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-08 17:40:41,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 17:40:41,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:40:41,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-08 17:40:41,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:40:42,450 INFO L124 PetriNetUnfolderBase]: 1091/1782 cut-off events. [2024-11-08 17:40:42,452 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2024-11-08 17:40:42,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3883 conditions, 1782 events. 1091/1782 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8289 event pairs, 75 based on Foata normal form. 48/1671 useless extension candidates. Maximal degree in co-relation 1935. Up to 508 conditions per place. [2024-11-08 17:40:42,463 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 66 selfloop transitions, 15 changer transitions 0/90 dead transitions. [2024-11-08 17:40:42,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 90 transitions, 397 flow [2024-11-08 17:40:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:40:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:40:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-11-08 17:40:42,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53156146179402 [2024-11-08 17:40:42,469 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 112 flow. Second operand 7 states and 160 transitions. [2024-11-08 17:40:42,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 90 transitions, 397 flow [2024-11-08 17:40:42,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 90 transitions, 389 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:40:42,475 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 194 flow [2024-11-08 17:40:42,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2024-11-08 17:40:42,477 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2024-11-08 17:40:42,477 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 194 flow [2024-11-08 17:40:42,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 17:40:42,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:40:42,478 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:40:42,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:40:42,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:42,679 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:40:42,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:40:42,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1428014495, now seen corresponding path program 2 times [2024-11-08 17:40:42,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:40:42,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958135120] [2024-11-08 17:40:42,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:40:42,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:42,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:40:42,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:40:42,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:40:42,786 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:40:42,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:40:42,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:40:42,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:40:42,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:40:42,846 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:40:42,847 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:40:42,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958135120] [2024-11-08 17:40:42,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958135120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:40:42,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:40:42,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:40:42,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88013052] [2024-11-08 17:40:42,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:40:42,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:40:42,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:40:42,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:40:42,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:40:42,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-08 17:40:42,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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 17:40:42,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:40:42,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-08 17:40:42,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:40:43,244 INFO L124 PetriNetUnfolderBase]: 499/951 cut-off events. [2024-11-08 17:40:43,245 INFO L125 PetriNetUnfolderBase]: For 373/383 co-relation queries the response was YES. [2024-11-08 17:40:43,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2231 conditions, 951 events. 499/951 cut-off events. For 373/383 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4951 event pairs, 309 based on Foata normal form. 1/846 useless extension candidates. Maximal degree in co-relation 1465. Up to 757 conditions per place. [2024-11-08 17:40:43,253 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 31 selfloop transitions, 2 changer transitions 2/55 dead transitions. [2024-11-08 17:40:43,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 270 flow [2024-11-08 17:40:43,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:40:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:40:43,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-08 17:40:43,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5465116279069767 [2024-11-08 17:40:43,256 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 194 flow. Second operand 4 states and 94 transitions. [2024-11-08 17:40:43,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 270 flow [2024-11-08 17:40:43,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:40:43,262 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 210 flow [2024-11-08 17:40:43,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-11-08 17:40:43,263 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2024-11-08 17:40:43,263 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 210 flow [2024-11-08 17:40:43,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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 17:40:43,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:40:43,264 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:40:43,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:40:43,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:43,465 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:40:43,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:40:43,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1950233515, now seen corresponding path program 1 times [2024-11-08 17:40:43,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:40:43,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798451855] [2024-11-08 17:40:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:40:43,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:43,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:40:43,469 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:40:43,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:40:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:43,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:40:43,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:40:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:40:43,738 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:40:43,738 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:40:43,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798451855] [2024-11-08 17:40:43,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798451855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:40:43,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:40:43,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:40:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463518949] [2024-11-08 17:40:43,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:40:43,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:40:43,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:40:43,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:40:43,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:40:43,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-08 17:40:43,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 17:40:43,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:40:43,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-08 17:40:43,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:40:44,069 INFO L124 PetriNetUnfolderBase]: 580/1161 cut-off events. [2024-11-08 17:40:44,070 INFO L125 PetriNetUnfolderBase]: For 480/493 co-relation queries the response was YES. [2024-11-08 17:40:44,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2758 conditions, 1161 events. 580/1161 cut-off events. For 480/493 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6442 event pairs, 369 based on Foata normal form. 32/1065 useless extension candidates. Maximal degree in co-relation 2208. Up to 758 conditions per place. [2024-11-08 17:40:44,079 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 32 selfloop transitions, 2 changer transitions 25/79 dead transitions. [2024-11-08 17:40:44,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 79 transitions, 432 flow [2024-11-08 17:40:44,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:40:44,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:40:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-08 17:40:44,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5953488372093023 [2024-11-08 17:40:44,081 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 210 flow. Second operand 5 states and 128 transitions. [2024-11-08 17:40:44,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 79 transitions, 432 flow [2024-11-08 17:40:44,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 79 transitions, 424 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-08 17:40:44,087 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 226 flow [2024-11-08 17:40:44,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-11-08 17:40:44,088 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2024-11-08 17:40:44,089 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 226 flow [2024-11-08 17:40:44,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 17:40:44,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:40:44,089 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:40:44,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:40:44,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:44,291 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:40:44,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:40:44,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1572151683, now seen corresponding path program 1 times [2024-11-08 17:40:44,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:40:44,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619360630] [2024-11-08 17:40:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:40:44,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:44,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:40:44,296 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:40:44,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:40:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:44,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:40:44,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:40:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:40:44,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:40:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:40:45,083 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:40:45,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619360630] [2024-11-08 17:40:45,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619360630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:40:45,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:40:45,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-08 17:40:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168384065] [2024-11-08 17:40:45,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:40:45,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:40:45,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:40:45,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:40:45,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:40:45,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-08 17:40:45,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 226 flow. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 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 17:40:45,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:40:45,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-08 17:40:45,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:40:45,755 INFO L124 PetriNetUnfolderBase]: 532/1109 cut-off events. [2024-11-08 17:40:45,755 INFO L125 PetriNetUnfolderBase]: For 647/696 co-relation queries the response was YES. [2024-11-08 17:40:45,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2831 conditions, 1109 events. 532/1109 cut-off events. For 647/696 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6168 event pairs, 205 based on Foata normal form. 32/1051 useless extension candidates. Maximal degree in co-relation 2808. Up to 543 conditions per place. [2024-11-08 17:40:45,764 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 67 selfloop transitions, 8 changer transitions 8/101 dead transitions. [2024-11-08 17:40:45,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 101 transitions, 581 flow [2024-11-08 17:40:45,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:40:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:40:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-11-08 17:40:45,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5481727574750831 [2024-11-08 17:40:45,767 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 226 flow. Second operand 7 states and 165 transitions. [2024-11-08 17:40:45,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 101 transitions, 581 flow [2024-11-08 17:40:45,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 575 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-08 17:40:45,773 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 287 flow [2024-11-08 17:40:45,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=287, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-11-08 17:40:45,774 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2024-11-08 17:40:45,774 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 287 flow [2024-11-08 17:40:45,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 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 17:40:45,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:40:45,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:40:45,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:40:45,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:45,979 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:40:45,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:40:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1058258682, now seen corresponding path program 1 times [2024-11-08 17:40:45,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:40:45,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188625711] [2024-11-08 17:40:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:40:45,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:45,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:40:45,982 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:40:45,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:40:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:46,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 17:40:46,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:40:47,397 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:40:47,399 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:40:47,420 INFO L349 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2024-11-08 17:40:47,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:40:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:40:47,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:40:58,826 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2024-11-08 17:40:58,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 4 [2024-11-08 17:40:59,147 INFO L349 Elim1Store]: treesize reduction 23, result has 74.7 percent of original size [2024-11-08 17:40:59,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 75 [2024-11-08 17:40:59,545 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2024-11-08 17:40:59,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 4 [2024-11-08 17:40:59,724 INFO L349 Elim1Store]: treesize reduction 64, result has 29.7 percent of original size [2024-11-08 17:40:59,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 34 [2024-11-08 17:41:01,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:41:01,880 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:41:01,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188625711] [2024-11-08 17:41:01,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188625711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:41:01,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:41:01,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2024-11-08 17:41:01,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177487019] [2024-11-08 17:41:01,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:41:01,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 17:41:01,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:41:01,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 17:41:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2024-11-08 17:41:06,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:41:06,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 43 [2024-11-08 17:41:06,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 287 flow. Second operand has 22 states, 22 states have (on average 7.909090909090909) internal successors, (174), 22 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 17:41:06,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:41:06,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 43 [2024-11-08 17:41:06,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:41:22,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:41:26,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:41:32,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:41:39,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:41:44,828 INFO L124 PetriNetUnfolderBase]: 3739/6325 cut-off events. [2024-11-08 17:41:44,829 INFO L125 PetriNetUnfolderBase]: For 5429/5429 co-relation queries the response was YES. [2024-11-08 17:41:44,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18194 conditions, 6325 events. 3739/6325 cut-off events. For 5429/5429 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 38435 event pairs, 683 based on Foata normal form. 19/6037 useless extension candidates. Maximal degree in co-relation 10604. Up to 1590 conditions per place. [2024-11-08 17:41:44,872 INFO L140 encePairwiseOnDemand]: 22/43 looper letters, 202 selfloop transitions, 53 changer transitions 270/528 dead transitions. [2024-11-08 17:41:44,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 528 transitions, 3313 flow [2024-11-08 17:41:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 17:41:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-08 17:41:44,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 630 transitions. [2024-11-08 17:41:44,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3488372093023256 [2024-11-08 17:41:44,878 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 287 flow. Second operand 42 states and 630 transitions. [2024-11-08 17:41:44,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 528 transitions, 3313 flow [2024-11-08 17:41:44,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 528 transitions, 3291 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-08 17:41:44,910 INFO L231 Difference]: Finished difference. Result has 129 places, 105 transitions, 838 flow [2024-11-08 17:41:44,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=838, PETRI_PLACES=129, PETRI_TRANSITIONS=105} [2024-11-08 17:41:44,911 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 91 predicate places. [2024-11-08 17:41:44,911 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 105 transitions, 838 flow [2024-11-08 17:41:44,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.909090909090909) internal successors, (174), 22 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 17:41:44,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:41:44,912 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:41:44,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:41:45,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:41:45,117 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:41:45,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:41:45,118 INFO L85 PathProgramCache]: Analyzing trace with hash -167463282, now seen corresponding path program 2 times [2024-11-08 17:41:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:41:45,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370590448] [2024-11-08 17:41:45,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:41:45,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:41:45,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:41:45,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:41:45,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:41:45,310 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:41:45,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:41:45,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 17:41:45,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:41:47,784 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-08 17:41:47,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2024-11-08 17:41:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:41:48,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:41:51,025 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2024-11-08 17:41:51,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 4 [2024-11-08 17:41:51,396 INFO L349 Elim1Store]: treesize reduction 70, result has 23.1 percent of original size [2024-11-08 17:41:51,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 28 [2024-11-08 17:41:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:41:52,975 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:41:52,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370590448] [2024-11-08 17:41:52,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370590448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:41:52,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:41:52,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2024-11-08 17:41:52,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419147386] [2024-11-08 17:41:52,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:41:52,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 17:41:52,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:41:52,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 17:41:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2024-11-08 17:41:53,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 43 [2024-11-08 17:41:53,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 105 transitions, 838 flow. Second operand has 28 states, 28 states have (on average 7.428571428571429) internal successors, (208), 28 states have internal predecessors, (208), 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 17:41:53,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:41:53,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 43 [2024-11-08 17:41:53,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:42:11,555 INFO L124 PetriNetUnfolderBase]: 6014/10123 cut-off events. [2024-11-08 17:42:11,556 INFO L125 PetriNetUnfolderBase]: For 55782/55782 co-relation queries the response was YES. [2024-11-08 17:42:11,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40833 conditions, 10123 events. 6014/10123 cut-off events. For 55782/55782 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 63534 event pairs, 252 based on Foata normal form. 76/9718 useless extension candidates. Maximal degree in co-relation 40772. Up to 1827 conditions per place. [2024-11-08 17:42:11,687 INFO L140 encePairwiseOnDemand]: 23/43 looper letters, 329 selfloop transitions, 233 changer transitions 82/647 dead transitions. [2024-11-08 17:42:11,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 647 transitions, 6146 flow [2024-11-08 17:42:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-08 17:42:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-08 17:42:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 662 transitions. [2024-11-08 17:42:11,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32073643410852715 [2024-11-08 17:42:11,693 INFO L175 Difference]: Start difference. First operand has 129 places, 105 transitions, 838 flow. Second operand 48 states and 662 transitions. [2024-11-08 17:42:11,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 647 transitions, 6146 flow [2024-11-08 17:42:12,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 647 transitions, 4897 flow, removed 621 selfloop flow, removed 20 redundant places. [2024-11-08 17:42:12,801 INFO L231 Difference]: Finished difference. Result has 156 places, 341 transitions, 3434 flow [2024-11-08 17:42:12,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=3434, PETRI_PLACES=156, PETRI_TRANSITIONS=341} [2024-11-08 17:42:12,802 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 118 predicate places. [2024-11-08 17:42:12,802 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 341 transitions, 3434 flow [2024-11-08 17:42:12,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.428571428571429) internal successors, (208), 28 states have internal predecessors, (208), 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 17:42:12,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:42:12,803 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:42:12,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:42:13,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:13,007 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:42:13,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:42:13,008 INFO L85 PathProgramCache]: Analyzing trace with hash 799220651, now seen corresponding path program 1 times [2024-11-08 17:42:13,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:42:13,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367909510] [2024-11-08 17:42:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:13,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:13,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:13,011 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:42:13,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:42:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:13,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:42:13,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:42:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:42:13,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:42:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:42:13,974 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:42:13,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367909510] [2024-11-08 17:42:13,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367909510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:42:13,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:42:13,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-08 17:42:13,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460885328] [2024-11-08 17:42:13,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:42:13,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:42:13,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:42:13,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:42:13,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:42:14,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-08 17:42:14,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 341 transitions, 3434 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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 17:42:14,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:42:14,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-08 17:42:14,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:42:17,406 INFO L124 PetriNetUnfolderBase]: 3980/7991 cut-off events. [2024-11-08 17:42:17,406 INFO L125 PetriNetUnfolderBase]: For 33865/34274 co-relation queries the response was YES. [2024-11-08 17:42:17,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33142 conditions, 7991 events. 3980/7991 cut-off events. For 33865/34274 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 61760 event pairs, 719 based on Foata normal form. 353/7819 useless extension candidates. Maximal degree in co-relation 33060. Up to 2261 conditions per place. [2024-11-08 17:42:17,529 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 349 selfloop transitions, 137 changer transitions 68/600 dead transitions. [2024-11-08 17:42:17,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 600 transitions, 6911 flow [2024-11-08 17:42:17,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:42:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:42:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 264 transitions. [2024-11-08 17:42:17,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43853820598006643 [2024-11-08 17:42:17,532 INFO L175 Difference]: Start difference. First operand has 156 places, 341 transitions, 3434 flow. Second operand 14 states and 264 transitions. [2024-11-08 17:42:17,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 600 transitions, 6911 flow [2024-11-08 17:42:17,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 600 transitions, 6007 flow, removed 391 selfloop flow, removed 11 redundant places. [2024-11-08 17:42:17,920 INFO L231 Difference]: Finished difference. Result has 156 places, 365 transitions, 3792 flow [2024-11-08 17:42:17,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2824, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3792, PETRI_PLACES=156, PETRI_TRANSITIONS=365} [2024-11-08 17:42:17,921 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 118 predicate places. [2024-11-08 17:42:17,921 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 365 transitions, 3792 flow [2024-11-08 17:42:17,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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 17:42:17,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:42:17,922 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:42:17,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 17:42:18,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:18,123 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 17:42:18,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:42:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2071184198, now seen corresponding path program 3 times [2024-11-08 17:42:18,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:42:18,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385199044] [2024-11-08 17:42:18,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:42:18,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:18,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:18,126 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:42:18,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089f8c5-fc5d-4e26-821f-aca2c39145c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process