./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB --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 87c0d05d6e0355591807918f29d7510d5603d16064875313848d28b6b97f865e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:36:37,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:36:37,359 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:36:37,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:36:37,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:36:37,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:36:37,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:36:37,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:36:37,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:36:37,412 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:36:37,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:36:37,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:36:37,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:36:37,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:36:37,415 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:36:37,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:36:37,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:36:37,416 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:36:37,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:36:37,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:36:37,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:36:37,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:36:37,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:36:37,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:36:37,418 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:36:37,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:36:37,418 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:36:37,418 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:36:37,418 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:36:37,418 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:36:37,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:36:37,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:36:37,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:37,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:36:37,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:36:37,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:36:37,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:36:37,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:37,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:36:37,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:36:37,419 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:36:37,419 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:36:37,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:36:37,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:36:37,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:36:37,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:36:37,420 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:36:37,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:36:37,420 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 87c0d05d6e0355591807918f29d7510d5603d16064875313848d28b6b97f865e [2024-11-28 04:36:37,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:36:37,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:36:37,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:36:37,805 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:36:37,806 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:36:37,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-28 04:36:41,381 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/data/e6b1b4072/c20eec5e3cf244ef9b0e5c3d1da3f256/FLAG302dab81b [2024-11-28 04:36:41,836 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:36:41,840 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-28 04:36:41,859 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/data/e6b1b4072/c20eec5e3cf244ef9b0e5c3d1da3f256/FLAG302dab81b [2024-11-28 04:36:41,887 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/data/e6b1b4072/c20eec5e3cf244ef9b0e5c3d1da3f256 [2024-11-28 04:36:41,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:36:41,892 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:36:41,894 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:36:41,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:36:41,905 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:36:41,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:41" (1/1) ... [2024-11-28 04:36:41,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed8c462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:41, skipping insertion in model container [2024-11-28 04:36:41,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:41" (1/1) ... [2024-11-28 04:36:41,964 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:36:42,294 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_e59b386c-c82b-4b68-ad71-cb280158f201/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5337,5350] [2024-11-28 04:36:42,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:36:42,385 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:36:42,432 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_e59b386c-c82b-4b68-ad71-cb280158f201/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5337,5350] [2024-11-28 04:36:42,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:36:42,480 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:36:42,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42 WrapperNode [2024-11-28 04:36:42,481 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:36:42,482 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:36:42,482 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:36:42,482 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:36:42,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,544 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 470 [2024-11-28 04:36:42,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:36:42,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:36:42,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:36:42,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:36:42,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,581 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:36:42,581 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,581 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,602 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:36:42,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:36:42,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:36:42,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:36:42,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (1/1) ... [2024-11-28 04:36:42,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:42,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:42,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:36:42,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:36:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:36:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:36:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:36:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:36:42,880 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:36:42,882 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:36:43,579 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-28 04:36:43,580 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:36:43,595 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:36:43,595 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:36:43,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:43 BoogieIcfgContainer [2024-11-28 04:36:43,596 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:36:43,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:36:43,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:36:43,607 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:36:43,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:36:41" (1/3) ... [2024-11-28 04:36:43,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9a28a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:36:43, skipping insertion in model container [2024-11-28 04:36:43,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:42" (2/3) ... [2024-11-28 04:36:43,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9a28a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:36:43, skipping insertion in model container [2024-11-28 04:36:43,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:43" (3/3) ... [2024-11-28 04:36:43,615 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-28 04:36:43,637 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:36:43,640 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c that has 1 procedures, 110 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 04:36:43,729 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:36:43,748 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;@5f116b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:36:43,749 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:36:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:43,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:36:43,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:43,767 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:43,767 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:43,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:43,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1289871298, now seen corresponding path program 1 times [2024-11-28 04:36:43,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:43,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128508346] [2024-11-28 04:36:43,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:43,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:44,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:44,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128508346] [2024-11-28 04:36:44,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128508346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:44,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:44,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:36:44,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641807774] [2024-11-28 04:36:44,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:44,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:36:44,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:44,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:36:44,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:44,522 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-28 04:36:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:44,598 INFO L93 Difference]: Finished difference Result 260 states and 419 transitions. [2024-11-28 04:36:44,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:36:44,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) Word has length 48 [2024-11-28 04:36:44,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:44,616 INFO L225 Difference]: With dead ends: 260 [2024-11-28 04:36:44,618 INFO L226 Difference]: Without dead ends: 171 [2024-11-28 04:36:44,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:44,628 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 137 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:44,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 401 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:44,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-28 04:36:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2024-11-28 04:36:44,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.505952380952381) internal successors, (253), 168 states have internal predecessors, (253), 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) [2024-11-28 04:36:44,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 253 transitions. [2024-11-28 04:36:44,692 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 253 transitions. Word has length 48 [2024-11-28 04:36:44,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:44,692 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 253 transitions. [2024-11-28 04:36:44,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-28 04:36:44,693 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 253 transitions. [2024-11-28 04:36:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 04:36:44,696 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:44,696 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:44,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:36:44,697 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:44,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1971653998, now seen corresponding path program 1 times [2024-11-28 04:36:44,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:44,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207473960] [2024-11-28 04:36:44,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:44,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:44,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:44,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207473960] [2024-11-28 04:36:44,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207473960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:44,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:44,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:36:44,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905702939] [2024-11-28 04:36:44,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:44,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:36:44,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:44,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:36:44,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:44,944 INFO L87 Difference]: Start difference. First operand 169 states and 253 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:45,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:45,015 INFO L93 Difference]: Finished difference Result 421 states and 653 transitions. [2024-11-28 04:36:45,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:36:45,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-28 04:36:45,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:45,019 INFO L225 Difference]: With dead ends: 421 [2024-11-28 04:36:45,019 INFO L226 Difference]: Without dead ends: 279 [2024-11-28 04:36:45,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:45,025 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 110 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:45,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 348 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:45,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-28 04:36:45,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2024-11-28 04:36:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.536231884057971) internal successors, (424), 276 states have internal predecessors, (424), 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) [2024-11-28 04:36:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 424 transitions. [2024-11-28 04:36:45,054 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 424 transitions. Word has length 49 [2024-11-28 04:36:45,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:45,054 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 424 transitions. [2024-11-28 04:36:45,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:45,055 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 424 transitions. [2024-11-28 04:36:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 04:36:45,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:45,056 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:45,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:36:45,057 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:45,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:45,057 INFO L85 PathProgramCache]: Analyzing trace with hash 663495285, now seen corresponding path program 1 times [2024-11-28 04:36:45,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:45,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119453963] [2024-11-28 04:36:45,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:45,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:45,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:45,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119453963] [2024-11-28 04:36:45,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119453963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:45,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:45,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:36:45,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449224163] [2024-11-28 04:36:45,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:45,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:36:45,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:45,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:36:45,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:45,209 INFO L87 Difference]: Start difference. First operand 277 states and 424 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-28 04:36:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:45,248 INFO L93 Difference]: Finished difference Result 713 states and 1114 transitions. [2024-11-28 04:36:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:36:45,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) Word has length 50 [2024-11-28 04:36:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:45,251 INFO L225 Difference]: With dead ends: 713 [2024-11-28 04:36:45,251 INFO L226 Difference]: Without dead ends: 463 [2024-11-28 04:36:45,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:45,254 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 105 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:45,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 333 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:45,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-28 04:36:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2024-11-28 04:36:45,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.5478260869565217) internal successors, (712), 460 states have internal predecessors, (712), 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) [2024-11-28 04:36:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 712 transitions. [2024-11-28 04:36:45,327 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 712 transitions. Word has length 50 [2024-11-28 04:36:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:45,327 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 712 transitions. [2024-11-28 04:36:45,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-28 04:36:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 712 transitions. [2024-11-28 04:36:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:36:45,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:45,333 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:45,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:36:45,334 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:45,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:45,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1706895887, now seen corresponding path program 1 times [2024-11-28 04:36:45,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:45,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914432615] [2024-11-28 04:36:45,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:45,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:45,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:45,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914432615] [2024-11-28 04:36:45,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914432615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:45,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:45,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:36:45,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595523385] [2024-11-28 04:36:45,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:45,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:36:45,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:45,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:36:45,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:45,546 INFO L87 Difference]: Start difference. First operand 461 states and 712 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:45,609 INFO L93 Difference]: Finished difference Result 1201 states and 1874 transitions. [2024-11-28 04:36:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:36:45,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-28 04:36:45,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:45,617 INFO L225 Difference]: With dead ends: 1201 [2024-11-28 04:36:45,618 INFO L226 Difference]: Without dead ends: 767 [2024-11-28 04:36:45,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:45,623 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 100 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:45,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 318 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:45,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-28 04:36:45,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2024-11-28 04:36:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.544502617801047) internal successors, (1180), 764 states have internal predecessors, (1180), 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) [2024-11-28 04:36:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1180 transitions. [2024-11-28 04:36:45,683 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1180 transitions. Word has length 51 [2024-11-28 04:36:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:45,684 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 1180 transitions. [2024-11-28 04:36:45,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1180 transitions. [2024-11-28 04:36:45,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:36:45,686 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:45,686 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:45,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:36:45,686 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:45,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:45,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1133800764, now seen corresponding path program 1 times [2024-11-28 04:36:45,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:45,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172303789] [2024-11-28 04:36:45,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:45,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:45,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:45,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172303789] [2024-11-28 04:36:45,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172303789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:45,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:45,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:36:45,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483491156] [2024-11-28 04:36:45,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:45,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:36:45,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:45,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:36:45,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:36:45,970 INFO L87 Difference]: Start difference. First operand 765 states and 1180 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:46,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:46,234 INFO L93 Difference]: Finished difference Result 4455 states and 6945 transitions. [2024-11-28 04:36:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:36:46,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-28 04:36:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:46,259 INFO L225 Difference]: With dead ends: 4455 [2024-11-28 04:36:46,259 INFO L226 Difference]: Without dead ends: 3717 [2024-11-28 04:36:46,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:36:46,264 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 904 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:46,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 1080 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2024-11-28 04:36:46,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 1501. [2024-11-28 04:36:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1500 states have (on average 1.5333333333333334) internal successors, (2300), 1500 states have internal predecessors, (2300), 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) [2024-11-28 04:36:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2300 transitions. [2024-11-28 04:36:46,395 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2300 transitions. Word has length 52 [2024-11-28 04:36:46,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:46,396 INFO L471 AbstractCegarLoop]: Abstraction has 1501 states and 2300 transitions. [2024-11-28 04:36:46,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:46,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2300 transitions. [2024-11-28 04:36:46,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 04:36:46,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:46,401 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:46,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:36:46,402 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:46,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:46,402 INFO L85 PathProgramCache]: Analyzing trace with hash 768629036, now seen corresponding path program 1 times [2024-11-28 04:36:46,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:46,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294094995] [2024-11-28 04:36:46,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:46,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:46,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294094995] [2024-11-28 04:36:46,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294094995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:46,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:46,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:36:46,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318093561] [2024-11-28 04:36:46,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:46,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:36:46,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:46,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:36:46,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:36:46,841 INFO L87 Difference]: Start difference. First operand 1501 states and 2300 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2024-11-28 04:36:47,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:47,040 INFO L93 Difference]: Finished difference Result 6501 states and 9920 transitions. [2024-11-28 04:36:47,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:36:47,041 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) Word has length 53 [2024-11-28 04:36:47,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:47,062 INFO L225 Difference]: With dead ends: 6501 [2024-11-28 04:36:47,063 INFO L226 Difference]: Without dead ends: 5027 [2024-11-28 04:36:47,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:36:47,071 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 496 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:47,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 578 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:47,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2024-11-28 04:36:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 5021. [2024-11-28 04:36:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 1.5163346613545816) internal successors, (7612), 5020 states have internal predecessors, (7612), 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) [2024-11-28 04:36:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 7612 transitions. [2024-11-28 04:36:47,236 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 7612 transitions. Word has length 53 [2024-11-28 04:36:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:47,236 INFO L471 AbstractCegarLoop]: Abstraction has 5021 states and 7612 transitions. [2024-11-28 04:36:47,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2024-11-28 04:36:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 7612 transitions. [2024-11-28 04:36:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 04:36:47,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:47,238 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:47,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:36:47,238 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:47,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:47,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1792030237, now seen corresponding path program 1 times [2024-11-28 04:36:47,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:47,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969030990] [2024-11-28 04:36:47,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:47,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:47,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:47,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:47,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969030990] [2024-11-28 04:36:47,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969030990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:47,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:47,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:36:47,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554858913] [2024-11-28 04:36:47,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:47,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:36:47,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:47,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:36:47,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:47,464 INFO L87 Difference]: Start difference. First operand 5021 states and 7612 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:47,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:47,822 INFO L93 Difference]: Finished difference Result 13905 states and 21118 transitions. [2024-11-28 04:36:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:36:47,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-28 04:36:47,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:47,859 INFO L225 Difference]: With dead ends: 13905 [2024-11-28 04:36:47,859 INFO L226 Difference]: Without dead ends: 8911 [2024-11-28 04:36:47,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:36:47,867 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 668 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:47,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 171 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:36:47,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8911 states. [2024-11-28 04:36:48,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8911 to 8909. [2024-11-28 04:36:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8909 states, 8908 states have (on average 1.5065110013471037) internal successors, (13420), 8908 states have internal predecessors, (13420), 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) [2024-11-28 04:36:48,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8909 states to 8909 states and 13420 transitions. [2024-11-28 04:36:48,151 INFO L78 Accepts]: Start accepts. Automaton has 8909 states and 13420 transitions. Word has length 55 [2024-11-28 04:36:48,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:48,152 INFO L471 AbstractCegarLoop]: Abstraction has 8909 states and 13420 transitions. [2024-11-28 04:36:48,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:48,152 INFO L276 IsEmpty]: Start isEmpty. Operand 8909 states and 13420 transitions. [2024-11-28 04:36:48,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 04:36:48,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:48,155 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:48,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:36:48,155 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:48,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash -22058530, now seen corresponding path program 1 times [2024-11-28 04:36:48,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:48,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546410193] [2024-11-28 04:36:48,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:48,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:48,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:48,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546410193] [2024-11-28 04:36:48,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546410193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:48,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:48,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:36:48,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827320718] [2024-11-28 04:36:48,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:48,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:36:48,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:48,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:36:48,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:48,695 INFO L87 Difference]: Start difference. First operand 8909 states and 13420 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:48,776 INFO L93 Difference]: Finished difference Result 9359 states and 14093 transitions. [2024-11-28 04:36:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:36:48,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-28 04:36:48,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:48,825 INFO L225 Difference]: With dead ends: 9359 [2024-11-28 04:36:48,826 INFO L226 Difference]: Without dead ends: 9357 [2024-11-28 04:36:48,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:48,830 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 0 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:48,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 593 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:48,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9357 states. [2024-11-28 04:36:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9357 to 9357. [2024-11-28 04:36:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9357 states, 9356 states have (on average 1.4822573749465584) internal successors, (13868), 9356 states have internal predecessors, (13868), 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) [2024-11-28 04:36:49,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9357 states to 9357 states and 13868 transitions. [2024-11-28 04:36:49,112 INFO L78 Accepts]: Start accepts. Automaton has 9357 states and 13868 transitions. Word has length 55 [2024-11-28 04:36:49,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:49,113 INFO L471 AbstractCegarLoop]: Abstraction has 9357 states and 13868 transitions. [2024-11-28 04:36:49,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:49,113 INFO L276 IsEmpty]: Start isEmpty. Operand 9357 states and 13868 transitions. [2024-11-28 04:36:49,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 04:36:49,114 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:49,114 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:49,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:36:49,115 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:49,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:49,115 INFO L85 PathProgramCache]: Analyzing trace with hash -673241382, now seen corresponding path program 1 times [2024-11-28 04:36:49,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:49,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693594347] [2024-11-28 04:36:49,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:49,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:49,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:49,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693594347] [2024-11-28 04:36:49,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693594347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:49,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:49,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:36:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666164717] [2024-11-28 04:36:49,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:49,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:36:49,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:49,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:36:49,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:49,256 INFO L87 Difference]: Start difference. First operand 9357 states and 13868 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:49,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:49,358 INFO L93 Difference]: Finished difference Result 21051 states and 31132 transitions. [2024-11-28 04:36:49,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:36:49,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-28 04:36:49,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:49,397 INFO L225 Difference]: With dead ends: 21051 [2024-11-28 04:36:49,397 INFO L226 Difference]: Without dead ends: 11721 [2024-11-28 04:36:49,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:49,410 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 88 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:49,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 309 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11721 states. [2024-11-28 04:36:49,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11721 to 11719. [2024-11-28 04:36:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11719 states, 11718 states have (on average 1.4707287933094384) internal successors, (17234), 11718 states have internal predecessors, (17234), 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) [2024-11-28 04:36:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11719 states to 11719 states and 17234 transitions. [2024-11-28 04:36:49,767 INFO L78 Accepts]: Start accepts. Automaton has 11719 states and 17234 transitions. Word has length 56 [2024-11-28 04:36:49,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:49,767 INFO L471 AbstractCegarLoop]: Abstraction has 11719 states and 17234 transitions. [2024-11-28 04:36:49,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 11719 states and 17234 transitions. [2024-11-28 04:36:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 04:36:49,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:49,781 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:49,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:36:49,781 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:49,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:49,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1821600213, now seen corresponding path program 1 times [2024-11-28 04:36:49,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:49,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274284043] [2024-11-28 04:36:49,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:49,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:36:50,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:50,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274284043] [2024-11-28 04:36:50,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274284043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:50,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68137768] [2024-11-28 04:36:50,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:50,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:50,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:50,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:50,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:36:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:50,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:36:50,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:51,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:52,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68137768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:52,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:52,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 7] total 15 [2024-11-28 04:36:52,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381480976] [2024-11-28 04:36:52,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:52,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:36:52,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:52,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:36:52,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:36:52,545 INFO L87 Difference]: Start difference. First operand 11719 states and 17234 transitions. Second operand has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 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) [2024-11-28 04:36:53,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:53,702 INFO L93 Difference]: Finished difference Result 60360 states and 89240 transitions. [2024-11-28 04:36:53,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:36:53,703 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 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) Word has length 77 [2024-11-28 04:36:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:53,826 INFO L225 Difference]: With dead ends: 60360 [2024-11-28 04:36:53,826 INFO L226 Difference]: Without dead ends: 48670 [2024-11-28 04:36:53,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:36:53,848 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 3344 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3344 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:53,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3344 Valid, 1518 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:36:53,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48670 states. [2024-11-28 04:36:54,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48670 to 42122. [2024-11-28 04:36:54,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42122 states, 42121 states have (on average 1.4642577336720402) internal successors, (61676), 42121 states have internal predecessors, (61676), 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) [2024-11-28 04:36:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42122 states to 42122 states and 61676 transitions. [2024-11-28 04:36:55,002 INFO L78 Accepts]: Start accepts. Automaton has 42122 states and 61676 transitions. Word has length 77 [2024-11-28 04:36:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:55,003 INFO L471 AbstractCegarLoop]: Abstraction has 42122 states and 61676 transitions. [2024-11-28 04:36:55,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 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) [2024-11-28 04:36:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 42122 states and 61676 transitions. [2024-11-28 04:36:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:36:55,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:55,013 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:55,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:36:55,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59b386c-c82b-4b68-ad71-cb280158f201/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:36:55,214 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:55,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:55,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1365606455, now seen corresponding path program 1 times [2024-11-28 04:36:55,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:55,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606465188] [2024-11-28 04:36:55,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:55,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:55,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:55,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606465188] [2024-11-28 04:36:55,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606465188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:55,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:55,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:36:55,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996130387] [2024-11-28 04:36:55,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:55,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:36:55,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:55,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:36:55,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:55,370 INFO L87 Difference]: Start difference. First operand 42122 states and 61676 transitions. 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) [2024-11-28 04:36:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:55,976 INFO L93 Difference]: Finished difference Result 104841 states and 153091 transitions. [2024-11-28 04:36:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:36:55,977 INFO L78 Accepts]: Start accepts. 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) Word has length 78 [2024-11-28 04:36:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:56,130 INFO L225 Difference]: With dead ends: 104841 [2024-11-28 04:36:56,131 INFO L226 Difference]: Without dead ends: 67788 [2024-11-28 04:36:56,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:56,167 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 90 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:56,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 311 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67788 states. [2024-11-28 04:36:57,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67788 to 65442. [2024-11-28 04:36:57,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65442 states, 65441 states have (on average 1.4471814306016106) internal successors, (94705), 65441 states have internal predecessors, (94705), 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) [2024-11-28 04:36:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65442 states to 65442 states and 94705 transitions. [2024-11-28 04:36:57,794 INFO L78 Accepts]: Start accepts. Automaton has 65442 states and 94705 transitions. Word has length 78 [2024-11-28 04:36:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:57,794 INFO L471 AbstractCegarLoop]: Abstraction has 65442 states and 94705 transitions. [2024-11-28 04:36:57,795 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) [2024-11-28 04:36:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand 65442 states and 94705 transitions. [2024-11-28 04:36:57,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:36:57,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:57,808 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:57,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:36:57,808 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:57,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:57,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1977851660, now seen corresponding path program 1 times [2024-11-28 04:36:57,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:57,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460674620] [2024-11-28 04:36:57,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:57,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:57,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:57,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460674620] [2024-11-28 04:36:57,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460674620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:57,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:57,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:36:57,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481928876] [2024-11-28 04:36:57,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:57,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:36:57,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:57,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:36:57,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:57,955 INFO L87 Difference]: Start difference. First operand 65442 states and 94705 transitions. 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) [2024-11-28 04:36:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:58,436 INFO L93 Difference]: Finished difference Result 142164 states and 204649 transitions. [2024-11-28 04:36:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:36:58,437 INFO L78 Accepts]: Start accepts. 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) Word has length 78 [2024-11-28 04:36:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:58,764 INFO L225 Difference]: With dead ends: 142164 [2024-11-28 04:36:58,764 INFO L226 Difference]: Without dead ends: 94485 [2024-11-28 04:36:58,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:58,797 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 91 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:58,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 330 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:58,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94485 states. [2024-11-28 04:37:00,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94485 to 90263. [2024-11-28 04:37:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90263 states, 90262 states have (on average 1.426790897609182) internal successors, (128785), 90262 states have internal predecessors, (128785), 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) [2024-11-28 04:37:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90263 states to 90263 states and 128785 transitions. [2024-11-28 04:37:00,611 INFO L78 Accepts]: Start accepts. Automaton has 90263 states and 128785 transitions. Word has length 78 [2024-11-28 04:37:00,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:00,612 INFO L471 AbstractCegarLoop]: Abstraction has 90263 states and 128785 transitions. [2024-11-28 04:37:00,612 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) [2024-11-28 04:37:00,612 INFO L276 IsEmpty]: Start isEmpty. Operand 90263 states and 128785 transitions. [2024-11-28 04:37:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:37:00,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:00,620 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:00,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:37:00,620 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:00,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:00,621 INFO L85 PathProgramCache]: Analyzing trace with hash 440432859, now seen corresponding path program 1 times [2024-11-28 04:37:00,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:00,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460422116] [2024-11-28 04:37:00,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:00,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:00,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:00,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460422116] [2024-11-28 04:37:00,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460422116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:00,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:00,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:37:00,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323740879] [2024-11-28 04:37:00,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:00,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:00,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:00,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:00,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:00,735 INFO L87 Difference]: Start difference. First operand 90263 states and 128785 transitions. 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) [2024-11-28 04:37:01,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:01,160 INFO L93 Difference]: Finished difference Result 150744 states and 213577 transitions. [2024-11-28 04:37:01,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:01,161 INFO L78 Accepts]: Start accepts. 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) Word has length 78 [2024-11-28 04:37:01,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:01,718 INFO L225 Difference]: With dead ends: 150744 [2024-11-28 04:37:01,718 INFO L226 Difference]: Without dead ends: 94100 [2024-11-28 04:37:01,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:01,747 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 92 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:01,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 349 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:01,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94100 states. [2024-11-28 04:37:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94100 to 89272. [2024-11-28 04:37:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89272 states, 89271 states have (on average 1.4047114964546157) internal successors, (125400), 89271 states have internal predecessors, (125400), 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) [2024-11-28 04:37:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89272 states to 89272 states and 125400 transitions. [2024-11-28 04:37:03,268 INFO L78 Accepts]: Start accepts. Automaton has 89272 states and 125400 transitions. Word has length 78 [2024-11-28 04:37:03,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:03,268 INFO L471 AbstractCegarLoop]: Abstraction has 89272 states and 125400 transitions. [2024-11-28 04:37:03,268 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) [2024-11-28 04:37:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 89272 states and 125400 transitions. [2024-11-28 04:37:03,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:37:03,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:03,278 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:03,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:37:03,278 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:03,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:03,279 INFO L85 PathProgramCache]: Analyzing trace with hash -739881820, now seen corresponding path program 1 times [2024-11-28 04:37:03,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:03,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244622784] [2024-11-28 04:37:03,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:03,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:37:03,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:03,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244622784] [2024-11-28 04:37:03,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244622784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:03,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:03,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:37:03,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619914745] [2024-11-28 04:37:03,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:03,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:37:03,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:03,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:37:03,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:37:03,549 INFO L87 Difference]: Start difference. First operand 89272 states and 125400 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-11-28 04:37:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:04,765 INFO L93 Difference]: Finished difference Result 225251 states and 319319 transitions. [2024-11-28 04:37:04,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:37:04,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) Word has length 78 [2024-11-28 04:37:04,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:05,109 INFO L225 Difference]: With dead ends: 225251 [2024-11-28 04:37:05,110 INFO L226 Difference]: Without dead ends: 182891 [2024-11-28 04:37:05,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:37:05,170 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 793 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:05,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1033 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:05,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182891 states. [2024-11-28 04:37:07,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182891 to 125114. [2024-11-28 04:37:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125114 states, 125113 states have (on average 1.4001742424847938) internal successors, (175180), 125113 states have internal predecessors, (175180), 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) [2024-11-28 04:37:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125114 states to 125114 states and 175180 transitions. [2024-11-28 04:37:07,471 INFO L78 Accepts]: Start accepts. Automaton has 125114 states and 175180 transitions. Word has length 78 [2024-11-28 04:37:07,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:07,471 INFO L471 AbstractCegarLoop]: Abstraction has 125114 states and 175180 transitions. [2024-11-28 04:37:07,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-11-28 04:37:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 125114 states and 175180 transitions. [2024-11-28 04:37:07,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:37:07,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:07,475 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:07,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:37:07,476 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:07,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:07,476 INFO L85 PathProgramCache]: Analyzing trace with hash -542796544, now seen corresponding path program 1 times [2024-11-28 04:37:07,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:07,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183692508] [2024-11-28 04:37:07,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:07,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:37:07,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:07,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183692508] [2024-11-28 04:37:07,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183692508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:07,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:07,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:37:07,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805399774] [2024-11-28 04:37:07,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:07,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:37:07,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:07,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:37:07,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:37:07,674 INFO L87 Difference]: Start difference. First operand 125114 states and 175180 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2024-11-28 04:37:09,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:09,257 INFO L93 Difference]: Finished difference Result 260614 states and 368755 transitions. [2024-11-28 04:37:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:37:09,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) Word has length 78 [2024-11-28 04:37:09,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:09,590 INFO L225 Difference]: With dead ends: 260614 [2024-11-28 04:37:09,590 INFO L226 Difference]: Without dead ends: 219613 [2024-11-28 04:37:09,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:37:09,650 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 793 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:09,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1010 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:09,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219613 states. [2024-11-28 04:37:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219613 to 163915. [2024-11-28 04:37:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163915 states, 163914 states have (on average 1.3993069536464244) internal successors, (229366), 163914 states have internal predecessors, (229366), 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) [2024-11-28 04:37:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163915 states to 163915 states and 229366 transitions. [2024-11-28 04:37:12,620 INFO L78 Accepts]: Start accepts. Automaton has 163915 states and 229366 transitions. Word has length 78 [2024-11-28 04:37:12,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:12,620 INFO L471 AbstractCegarLoop]: Abstraction has 163915 states and 229366 transitions. [2024-11-28 04:37:12,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2024-11-28 04:37:12,620 INFO L276 IsEmpty]: Start isEmpty. Operand 163915 states and 229366 transitions. [2024-11-28 04:37:12,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:37:12,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:12,624 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:12,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:37:12,624 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:12,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:12,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1309904988, now seen corresponding path program 1 times [2024-11-28 04:37:12,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:12,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071703515] [2024-11-28 04:37:12,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:12,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:37:12,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071703515] [2024-11-28 04:37:12,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071703515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:12,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:12,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:37:12,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479457464] [2024-11-28 04:37:12,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:12,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:37:12,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:12,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:37:12,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:37:12,823 INFO L87 Difference]: Start difference. First operand 163915 states and 229366 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-28 04:37:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:14,321 INFO L93 Difference]: Finished difference Result 275825 states and 389458 transitions. [2024-11-28 04:37:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:37:14,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) Word has length 78 [2024-11-28 04:37:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:14,701 INFO L225 Difference]: With dead ends: 275825 [2024-11-28 04:37:14,701 INFO L226 Difference]: Without dead ends: 252943 [2024-11-28 04:37:14,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:37:14,758 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 767 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:14,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1043 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252943 states. [2024-11-28 04:37:17,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252943 to 186129. [2024-11-28 04:37:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186129 states, 186128 states have (on average 1.3996926846041433) internal successors, (260522), 186128 states have internal predecessors, (260522), 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) [2024-11-28 04:37:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186129 states to 186129 states and 260522 transitions. [2024-11-28 04:37:18,157 INFO L78 Accepts]: Start accepts. Automaton has 186129 states and 260522 transitions. Word has length 78 [2024-11-28 04:37:18,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:18,158 INFO L471 AbstractCegarLoop]: Abstraction has 186129 states and 260522 transitions. [2024-11-28 04:37:18,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-28 04:37:18,158 INFO L276 IsEmpty]: Start isEmpty. Operand 186129 states and 260522 transitions. [2024-11-28 04:37:18,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:37:18,162 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:18,162 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:18,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:37:18,163 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:18,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:18,163 INFO L85 PathProgramCache]: Analyzing trace with hash 839835956, now seen corresponding path program 1 times [2024-11-28 04:37:18,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:18,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23868754] [2024-11-28 04:37:18,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:18,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:37:18,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23868754] [2024-11-28 04:37:18,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23868754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:18,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:18,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:37:18,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480005145] [2024-11-28 04:37:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:18,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:37:18,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:18,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:37:18,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:37:18,348 INFO L87 Difference]: Start difference. First operand 186129 states and 260522 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-28 04:37:20,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:20,273 INFO L93 Difference]: Finished difference Result 308871 states and 436119 transitions. [2024-11-28 04:37:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:37:20,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) Word has length 78 [2024-11-28 04:37:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:20,645 INFO L225 Difference]: With dead ends: 308871 [2024-11-28 04:37:20,646 INFO L226 Difference]: Without dead ends: 274642 [2024-11-28 04:37:20,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:37:20,704 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 731 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:20,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1115 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:20,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274642 states. [2024-11-28 04:37:24,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274642 to 213970. [2024-11-28 04:37:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213970 states, 213969 states have (on average 1.4004645532764093) internal successors, (299656), 213969 states have internal predecessors, (299656), 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) [2024-11-28 04:37:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213970 states to 213970 states and 299656 transitions. [2024-11-28 04:37:24,581 INFO L78 Accepts]: Start accepts. Automaton has 213970 states and 299656 transitions. Word has length 78 [2024-11-28 04:37:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:24,582 INFO L471 AbstractCegarLoop]: Abstraction has 213970 states and 299656 transitions. [2024-11-28 04:37:24,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-28 04:37:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 213970 states and 299656 transitions. [2024-11-28 04:37:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 04:37:24,589 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:24,589 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:24,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:37:24,590 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:24,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1258059313, now seen corresponding path program 1 times [2024-11-28 04:37:24,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:24,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876941830] [2024-11-28 04:37:24,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:24,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:24,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876941830] [2024-11-28 04:37:24,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876941830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:24,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:24,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:37:24,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394443881] [2024-11-28 04:37:24,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:24,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:24,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:24,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:24,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:24,705 INFO L87 Difference]: Start difference. First operand 213970 states and 299656 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2024-11-28 04:37:27,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:27,022 INFO L93 Difference]: Finished difference Result 481945 states and 672664 transitions. [2024-11-28 04:37:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:27,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) Word has length 81 [2024-11-28 04:37:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:27,353 INFO L225 Difference]: With dead ends: 481945 [2024-11-28 04:37:27,353 INFO L226 Difference]: Without dead ends: 275537 [2024-11-28 04:37:27,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:27,458 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 87 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:27,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 329 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275537 states. [2024-11-28 04:37:30,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275537 to 238961. [2024-11-28 04:37:31,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238961 states, 238960 states have (on average 1.375573317710077) internal successors, (328707), 238960 states have internal predecessors, (328707), 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) [2024-11-28 04:37:31,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238961 states to 238961 states and 328707 transitions. [2024-11-28 04:37:31,663 INFO L78 Accepts]: Start accepts. Automaton has 238961 states and 328707 transitions. Word has length 81 [2024-11-28 04:37:31,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:31,664 INFO L471 AbstractCegarLoop]: Abstraction has 238961 states and 328707 transitions. [2024-11-28 04:37:31,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2024-11-28 04:37:31,664 INFO L276 IsEmpty]: Start isEmpty. Operand 238961 states and 328707 transitions. [2024-11-28 04:37:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:37:31,675 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:31,675 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:31,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:37:31,676 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:31,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:31,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1228372865, now seen corresponding path program 1 times [2024-11-28 04:37:31,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:31,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533541603] [2024-11-28 04:37:31,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:31,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:37:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:31,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533541603] [2024-11-28 04:37:31,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533541603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:31,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:31,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:37:31,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640097586] [2024-11-28 04:37:31,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:31,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:37:31,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:31,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:37:31,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:37:31,812 INFO L87 Difference]: Start difference. First operand 238961 states and 328707 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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)