./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-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_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22565549446fb10d699e81ca4083722d91d5f2743033fe3de4e7c76b9089640a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:28:13,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:28:13,213 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:28:13,218 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:28:13,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:28:13,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:28:13,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:28:13,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:28:13,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:28:13,241 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:28:13,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:28:13,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:28:13,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:28:13,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:28:13,242 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:28:13,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:28:13,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:28:13,242 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:28:13,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:28:13,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:28:13,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:28:13,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:28:13,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:28:13,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:28:13,243 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:28:13,243 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:28:13,243 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:28:13,243 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:28:13,243 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:28:13,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:28:13,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:28:13,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:28:13,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:28:13,244 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:28:13,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:28:13,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:28:13,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:28:13,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:28:13,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:28:13,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:28:13,244 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:28:13,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:28:13,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:28:13,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:28:13,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:28:13,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:28:13,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:28:13,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:28:13,245 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_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22565549446fb10d699e81ca4083722d91d5f2743033fe3de4e7c76b9089640a [2024-12-02 15:28:13,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:28:13,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:28:13,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:28:13,486 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:28:13,486 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:28:13,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-12-02 15:28:16,167 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/data/3c074be6c/b1f8882856154f4d983b080e31f67121/FLAG2998d5f28 [2024-12-02 15:28:16,372 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:28:16,373 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-12-02 15:28:16,381 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/data/3c074be6c/b1f8882856154f4d983b080e31f67121/FLAG2998d5f28 [2024-12-02 15:28:16,393 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/data/3c074be6c/b1f8882856154f4d983b080e31f67121 [2024-12-02 15:28:16,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:28:16,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:28:16,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:28:16,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:28:16,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:28:16,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139c39b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16, skipping insertion in model container [2024-12-02 15:28:16,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,431 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:28:16,626 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_a301de22-965a-4f13-a642-c640ba408b87/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7163,7176] [2024-12-02 15:28:16,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:28:16,675 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:28:16,715 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_a301de22-965a-4f13-a642-c640ba408b87/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7163,7176] [2024-12-02 15:28:16,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:28:16,754 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:28:16,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16 WrapperNode [2024-12-02 15:28:16,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:28:16,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:28:16,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:28:16,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:28:16,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,798 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 644 [2024-12-02 15:28:16,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:28:16,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:28:16,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:28:16,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:28:16,808 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,812 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,828 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 15:28:16,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,838 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:28:16,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:28:16,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:28:16,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:28:16,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (1/1) ... [2024-12-02 15:28:16,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:28:16,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:28:16,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:28:16,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:28:16,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:28:16,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:28:16,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:28:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:28:16,995 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:28:16,997 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:28:17,505 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2024-12-02 15:28:17,506 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:28:17,518 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:28:17,518 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 15:28:17,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:28:17 BoogieIcfgContainer [2024-12-02 15:28:17,519 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:28:17,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:28:17,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:28:17,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:28:17,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:28:16" (1/3) ... [2024-12-02 15:28:17,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765e7510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:28:17, skipping insertion in model container [2024-12-02 15:28:17,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:16" (2/3) ... [2024-12-02 15:28:17,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765e7510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:28:17, skipping insertion in model container [2024-12-02 15:28:17,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:28:17" (3/3) ... [2024-12-02 15:28:17,526 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-12-02 15:28:17,537 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:28:17,539 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c that has 1 procedures, 161 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 15:28:17,584 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:28:17,594 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;@62e62f32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:28:17,594 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:28:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 159 states have (on average 1.7044025157232705) internal successors, (271), 160 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:17,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 15:28:17,602 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:17,603 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] [2024-12-02 15:28:17,603 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:17,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash 293786216, now seen corresponding path program 1 times [2024-12-02 15:28:17,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:17,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844301452] [2024-12-02 15:28:17,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:17,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:17,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:17,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844301452] [2024-12-02 15:28:17,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844301452] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:17,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:17,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:28:17,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685786805] [2024-12-02 15:28:17,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:17,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:28:17,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:18,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:28:18,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:28:18,009 INFO L87 Difference]: Start difference. First operand has 161 states, 159 states have (on average 1.7044025157232705) internal successors, (271), 160 states have internal predecessors, (271), 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 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:18,199 INFO L93 Difference]: Finished difference Result 516 states and 834 transitions. [2024-12-02 15:28:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:28:18,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 [2024-12-02 15:28:18,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:18,211 INFO L225 Difference]: With dead ends: 516 [2024-12-02 15:28:18,212 INFO L226 Difference]: Without dead ends: 437 [2024-12-02 15:28:18,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:28:18,217 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 908 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:18,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1286 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:28:18,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-12-02 15:28:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 255. [2024-12-02 15:28:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.515748031496063) internal successors, (385), 254 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 385 transitions. [2024-12-02 15:28:18,265 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 385 transitions. Word has length 49 [2024-12-02 15:28:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:18,266 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 385 transitions. [2024-12-02 15:28:18,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 385 transitions. [2024-12-02 15:28:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 15:28:18,267 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:18,267 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] [2024-12-02 15:28:18,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:28:18,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:18,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1697275801, now seen corresponding path program 1 times [2024-12-02 15:28:18,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:18,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045965566] [2024-12-02 15:28:18,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:18,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:18,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:18,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045965566] [2024-12-02 15:28:18,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045965566] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:18,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:18,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:28:18,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224727295] [2024-12-02 15:28:18,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:18,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:28:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:18,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:28:18,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:28:18,381 INFO L87 Difference]: Start difference. First operand 255 states and 385 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:18,422 INFO L93 Difference]: Finished difference Result 627 states and 965 transitions. [2024-12-02 15:28:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:28:18,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 [2024-12-02 15:28:18,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:18,425 INFO L225 Difference]: With dead ends: 627 [2024-12-02 15:28:18,425 INFO L226 Difference]: Without dead ends: 429 [2024-12-02 15:28:18,426 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 [2024-12-02 15:28:18,427 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 160 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:18,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 422 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:18,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-12-02 15:28:18,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 427. [2024-12-02 15:28:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.5046948356807512) internal successors, (641), 426 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:18,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 641 transitions. [2024-12-02 15:28:18,447 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 641 transitions. Word has length 52 [2024-12-02 15:28:18,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:18,448 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 641 transitions. [2024-12-02 15:28:18,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:18,448 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 641 transitions. [2024-12-02 15:28:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 15:28:18,449 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:18,449 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] [2024-12-02 15:28:18,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:28:18,450 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:18,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:18,450 INFO L85 PathProgramCache]: Analyzing trace with hash -195371450, now seen corresponding path program 1 times [2024-12-02 15:28:18,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:18,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065554589] [2024-12-02 15:28:18,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:18,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:18,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065554589] [2024-12-02 15:28:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065554589] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:18,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:18,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:28:18,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837634534] [2024-12-02 15:28:18,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:18,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:28:18,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:18,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:28:18,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:28:18,538 INFO L87 Difference]: Start difference. First operand 427 states and 641 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:18,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:18,573 INFO L93 Difference]: Finished difference Result 1077 states and 1638 transitions. [2024-12-02 15:28:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:28:18,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 [2024-12-02 15:28:18,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:18,578 INFO L225 Difference]: With dead ends: 1077 [2024-12-02 15:28:18,578 INFO L226 Difference]: Without dead ends: 749 [2024-12-02 15:28:18,579 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 [2024-12-02 15:28:18,579 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 159 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:18,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 436 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-12-02 15:28:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 747. [2024-12-02 15:28:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 1.4946380697050938) internal successors, (1115), 746 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1115 transitions. [2024-12-02 15:28:18,603 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1115 transitions. Word has length 52 [2024-12-02 15:28:18,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:18,603 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 1115 transitions. [2024-12-02 15:28:18,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1115 transitions. [2024-12-02 15:28:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 15:28:18,605 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:18,605 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] [2024-12-02 15:28:18,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:28:18,605 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:18,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:18,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1046972601, now seen corresponding path program 1 times [2024-12-02 15:28:18,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:18,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631769705] [2024-12-02 15:28:18,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:18,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:18,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:18,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631769705] [2024-12-02 15:28:18,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631769705] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:18,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:18,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:28:18,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412302234] [2024-12-02 15:28:18,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:18,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:28:18,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:18,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:28:18,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:28:18,688 INFO L87 Difference]: Start difference. First operand 747 states and 1115 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:18,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:18,742 INFO L93 Difference]: Finished difference Result 1857 states and 2792 transitions. [2024-12-02 15:28:18,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:28:18,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 [2024-12-02 15:28:18,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:18,747 INFO L225 Difference]: With dead ends: 1857 [2024-12-02 15:28:18,748 INFO L226 Difference]: Without dead ends: 1293 [2024-12-02 15:28:18,748 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 [2024-12-02 15:28:18,749 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 146 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:18,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 436 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:18,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2024-12-02 15:28:18,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1291. [2024-12-02 15:28:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1290 states have (on average 1.4751937984496124) internal successors, (1903), 1290 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1903 transitions. [2024-12-02 15:28:18,784 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1903 transitions. Word has length 52 [2024-12-02 15:28:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:18,784 INFO L471 AbstractCegarLoop]: Abstraction has 1291 states and 1903 transitions. [2024-12-02 15:28:18,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1903 transitions. [2024-12-02 15:28:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 15:28:18,786 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:18,786 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] [2024-12-02 15:28:18,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:28:18,787 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:18,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:18,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1633425885, now seen corresponding path program 1 times [2024-12-02 15:28:18,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:18,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437385442] [2024-12-02 15:28:18,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:18,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:18,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:18,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437385442] [2024-12-02 15:28:18,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437385442] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:18,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:18,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:28:18,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034746103] [2024-12-02 15:28:18,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:18,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:28:18,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:18,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:28:18,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:28:18,931 INFO L87 Difference]: Start difference. First operand 1291 states and 1903 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2024-12-02 15:28:19,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:19,037 INFO L93 Difference]: Finished difference Result 2511 states and 3768 transitions. [2024-12-02 15:28:19,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:28:19,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 [2024-12-02 15:28:19,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:19,046 INFO L225 Difference]: With dead ends: 2511 [2024-12-02 15:28:19,046 INFO L226 Difference]: Without dead ends: 2145 [2024-12-02 15:28:19,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:28:19,048 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 639 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:19,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1142 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:28:19,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2024-12-02 15:28:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 1740. [2024-12-02 15:28:19,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1739 states have (on average 1.4836112708453133) internal successors, (2580), 1739 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2580 transitions. [2024-12-02 15:28:19,097 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2580 transitions. Word has length 53 [2024-12-02 15:28:19,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:19,098 INFO L471 AbstractCegarLoop]: Abstraction has 1740 states and 2580 transitions. [2024-12-02 15:28:19,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2024-12-02 15:28:19,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2580 transitions. [2024-12-02 15:28:19,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 15:28:19,099 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:19,099 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] [2024-12-02 15:28:19,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:28:19,099 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:19,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:19,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1286312845, now seen corresponding path program 1 times [2024-12-02 15:28:19,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:19,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988907189] [2024-12-02 15:28:19,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:19,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:19,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:19,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988907189] [2024-12-02 15:28:19,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988907189] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:19,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:19,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:28:19,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500830811] [2024-12-02 15:28:19,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:19,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:28:19,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:19,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:28:19,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:28:19,239 INFO L87 Difference]: Start difference. First operand 1740 states and 2580 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2024-12-02 15:28:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:19,335 INFO L93 Difference]: Finished difference Result 2960 states and 4445 transitions. [2024-12-02 15:28:19,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:28:19,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 [2024-12-02 15:28:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:19,344 INFO L225 Difference]: With dead ends: 2960 [2024-12-02 15:28:19,344 INFO L226 Difference]: Without dead ends: 2594 [2024-12-02 15:28:19,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:28:19,346 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 631 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:19,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 997 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:28:19,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2024-12-02 15:28:19,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2085. [2024-12-02 15:28:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 2084 states have (on average 1.4889635316698657) internal successors, (3103), 2084 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:19,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3103 transitions. [2024-12-02 15:28:19,404 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3103 transitions. Word has length 53 [2024-12-02 15:28:19,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:19,404 INFO L471 AbstractCegarLoop]: Abstraction has 2085 states and 3103 transitions. [2024-12-02 15:28:19,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2024-12-02 15:28:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3103 transitions. [2024-12-02 15:28:19,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 15:28:19,405 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:19,405 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] [2024-12-02 15:28:19,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:28:19,406 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:19,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:19,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1015763425, now seen corresponding path program 1 times [2024-12-02 15:28:19,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:19,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601037403] [2024-12-02 15:28:19,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:19,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:19,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:19,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601037403] [2024-12-02 15:28:19,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601037403] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:19,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:19,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:28:19,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126755434] [2024-12-02 15:28:19,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:19,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:28:19,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:19,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:28:19,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:28:19,532 INFO L87 Difference]: Start difference. First operand 2085 states and 3103 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2024-12-02 15:28:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:19,654 INFO L93 Difference]: Finished difference Result 3359 states and 5045 transitions. [2024-12-02 15:28:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:28:19,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 [2024-12-02 15:28:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:19,665 INFO L225 Difference]: With dead ends: 3359 [2024-12-02 15:28:19,665 INFO L226 Difference]: Without dead ends: 2993 [2024-12-02 15:28:19,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:28:19,667 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 633 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:19,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1142 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:28:19,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2024-12-02 15:28:19,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2375. [2024-12-02 15:28:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2374 states have (on average 1.4928390901432183) internal successors, (3544), 2374 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3544 transitions. [2024-12-02 15:28:19,747 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3544 transitions. Word has length 53 [2024-12-02 15:28:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:19,747 INFO L471 AbstractCegarLoop]: Abstraction has 2375 states and 3544 transitions. [2024-12-02 15:28:19,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2024-12-02 15:28:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3544 transitions. [2024-12-02 15:28:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 15:28:19,750 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:19,750 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, 1] [2024-12-02 15:28:19,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:28:19,750 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:19,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:19,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1968890954, now seen corresponding path program 1 times [2024-12-02 15:28:19,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:19,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800722000] [2024-12-02 15:28:19,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:19,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:19,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:19,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800722000] [2024-12-02 15:28:19,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800722000] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:19,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:19,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:28:19,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214123467] [2024-12-02 15:28:19,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:19,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:28:19,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:19,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:28:19,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:28:19,893 INFO L87 Difference]: Start difference. First operand 2375 states and 3544 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:20,146 INFO L93 Difference]: Finished difference Result 5650 states and 8421 transitions. [2024-12-02 15:28:20,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:28:20,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2024-12-02 15:28:20,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:20,152 INFO L225 Difference]: With dead ends: 5650 [2024-12-02 15:28:20,153 INFO L226 Difference]: Without dead ends: 3302 [2024-12-02 15:28:20,155 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 [2024-12-02 15:28:20,156 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 902 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:20,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 212 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:28:20,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2024-12-02 15:28:20,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 3275. [2024-12-02 15:28:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3274 states have (on average 1.4706780696395847) internal successors, (4815), 3274 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4815 transitions. [2024-12-02 15:28:20,220 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4815 transitions. Word has length 57 [2024-12-02 15:28:20,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:20,221 INFO L471 AbstractCegarLoop]: Abstraction has 3275 states and 4815 transitions. [2024-12-02 15:28:20,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4815 transitions. [2024-12-02 15:28:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 15:28:20,222 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:20,222 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, 1] [2024-12-02 15:28:20,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:28:20,223 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:20,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:20,223 INFO L85 PathProgramCache]: Analyzing trace with hash -108107112, now seen corresponding path program 1 times [2024-12-02 15:28:20,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:20,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687280397] [2024-12-02 15:28:20,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:20,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:20,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:20,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687280397] [2024-12-02 15:28:20,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687280397] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:20,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:20,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:28:20,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018533358] [2024-12-02 15:28:20,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:20,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:28:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:20,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:28:20,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:28:20,321 INFO L87 Difference]: Start difference. First operand 3275 states and 4815 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:20,556 INFO L93 Difference]: Finished difference Result 7802 states and 11466 transitions. [2024-12-02 15:28:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:28:20,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2024-12-02 15:28:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:20,566 INFO L225 Difference]: With dead ends: 7802 [2024-12-02 15:28:20,567 INFO L226 Difference]: Without dead ends: 4572 [2024-12-02 15:28:20,569 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 [2024-12-02 15:28:20,570 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 888 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:20,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 230 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:28:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4572 states. [2024-12-02 15:28:20,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4572 to 4547. [2024-12-02 15:28:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4547 states, 4546 states have (on average 1.457765068191817) internal successors, (6627), 4546 states have internal predecessors, (6627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4547 states to 4547 states and 6627 transitions. [2024-12-02 15:28:20,654 INFO L78 Accepts]: Start accepts. Automaton has 4547 states and 6627 transitions. Word has length 57 [2024-12-02 15:28:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:20,655 INFO L471 AbstractCegarLoop]: Abstraction has 4547 states and 6627 transitions. [2024-12-02 15:28:20,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4547 states and 6627 transitions. [2024-12-02 15:28:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 15:28:20,656 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:20,656 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, 1, 1] [2024-12-02 15:28:20,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 15:28:20,657 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:20,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:20,657 INFO L85 PathProgramCache]: Analyzing trace with hash 871846780, now seen corresponding path program 1 times [2024-12-02 15:28:20,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:20,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044877500] [2024-12-02 15:28:20,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:20,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:20,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:20,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044877500] [2024-12-02 15:28:20,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044877500] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:20,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:20,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:28:20,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575225178] [2024-12-02 15:28:20,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:20,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:28:20,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:20,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:28:20,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:28:20,729 INFO L87 Difference]: Start difference. First operand 4547 states and 6627 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:20,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:20,929 INFO L93 Difference]: Finished difference Result 10777 states and 15690 transitions. [2024-12-02 15:28:20,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:28:20,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2024-12-02 15:28:20,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:20,947 INFO L225 Difference]: With dead ends: 10777 [2024-12-02 15:28:20,947 INFO L226 Difference]: Without dead ends: 6311 [2024-12-02 15:28:20,952 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 [2024-12-02 15:28:20,952 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 843 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:20,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 232 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:28:20,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6311 states. [2024-12-02 15:28:21,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6311 to 6276. [2024-12-02 15:28:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6276 states, 6275 states have (on average 1.4422310756972112) internal successors, (9050), 6275 states have internal predecessors, (9050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6276 states to 6276 states and 9050 transitions. [2024-12-02 15:28:21,073 INFO L78 Accepts]: Start accepts. Automaton has 6276 states and 9050 transitions. Word has length 58 [2024-12-02 15:28:21,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:21,073 INFO L471 AbstractCegarLoop]: Abstraction has 6276 states and 9050 transitions. [2024-12-02 15:28:21,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:21,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6276 states and 9050 transitions. [2024-12-02 15:28:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 15:28:21,076 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:21,076 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, 1, 1, 1] [2024-12-02 15:28:21,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 15:28:21,076 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:21,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash 536362735, now seen corresponding path program 1 times [2024-12-02 15:28:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:21,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362767844] [2024-12-02 15:28:21,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:21,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:21,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:21,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362767844] [2024-12-02 15:28:21,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362767844] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:21,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:21,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:28:21,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644620442] [2024-12-02 15:28:21,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:21,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:28:21,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:21,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:28:21,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:28:21,254 INFO L87 Difference]: Start difference. First operand 6276 states and 9050 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:21,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:21,567 INFO L93 Difference]: Finished difference Result 14202 states and 20354 transitions. [2024-12-02 15:28:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:28:21,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-12-02 15:28:21,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:21,588 INFO L225 Difference]: With dead ends: 14202 [2024-12-02 15:28:21,588 INFO L226 Difference]: Without dead ends: 10956 [2024-12-02 15:28:21,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:28:21,593 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 1107 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:21,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 330 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:28:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10956 states. [2024-12-02 15:28:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10956 to 6296. [2024-12-02 15:28:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6296 states, 6295 states have (on average 1.4414614773629866) internal successors, (9074), 6295 states have internal predecessors, (9074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6296 states to 6296 states and 9074 transitions. [2024-12-02 15:28:21,698 INFO L78 Accepts]: Start accepts. Automaton has 6296 states and 9074 transitions. Word has length 59 [2024-12-02 15:28:21,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:21,698 INFO L471 AbstractCegarLoop]: Abstraction has 6296 states and 9074 transitions. [2024-12-02 15:28:21,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:21,698 INFO L276 IsEmpty]: Start isEmpty. Operand 6296 states and 9074 transitions. [2024-12-02 15:28:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 15:28:21,700 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:21,700 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, 1, 1, 1] [2024-12-02 15:28:21,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 15:28:21,700 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:21,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash -426804272, now seen corresponding path program 1 times [2024-12-02 15:28:21,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:21,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043268689] [2024-12-02 15:28:21,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:21,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:21,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:21,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043268689] [2024-12-02 15:28:21,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043268689] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:21,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:21,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:28:21,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125520744] [2024-12-02 15:28:21,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:21,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:28:21,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:21,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:28:21,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:28:21,822 INFO L87 Difference]: Start difference. First operand 6296 states and 9074 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:22,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:22,151 INFO L93 Difference]: Finished difference Result 16430 states and 23516 transitions. [2024-12-02 15:28:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:28:22,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-12-02 15:28:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:22,169 INFO L225 Difference]: With dead ends: 16430 [2024-12-02 15:28:22,169 INFO L226 Difference]: Without dead ends: 13332 [2024-12-02 15:28:22,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:28:22,173 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 1288 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:22,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 378 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:28:22,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13332 states. [2024-12-02 15:28:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13332 to 6390. [2024-12-02 15:28:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6390 states, 6389 states have (on average 1.4391923618719675) internal successors, (9195), 6389 states have internal predecessors, (9195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6390 states to 6390 states and 9195 transitions. [2024-12-02 15:28:22,273 INFO L78 Accepts]: Start accepts. Automaton has 6390 states and 9195 transitions. Word has length 59 [2024-12-02 15:28:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:22,273 INFO L471 AbstractCegarLoop]: Abstraction has 6390 states and 9195 transitions. [2024-12-02 15:28:22,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:22,273 INFO L276 IsEmpty]: Start isEmpty. Operand 6390 states and 9195 transitions. [2024-12-02 15:28:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 15:28:22,275 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:22,275 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, 1, 1, 1] [2024-12-02 15:28:22,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 15:28:22,276 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:22,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash -974429839, now seen corresponding path program 1 times [2024-12-02 15:28:22,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:22,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340816554] [2024-12-02 15:28:22,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:22,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:22,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:22,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340816554] [2024-12-02 15:28:22,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340816554] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:22,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:22,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:28:22,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651383745] [2024-12-02 15:28:22,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:22,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:28:22,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:22,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:28:22,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:28:22,395 INFO L87 Difference]: Start difference. First operand 6390 states and 9195 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:22,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:22,775 INFO L93 Difference]: Finished difference Result 19083 states and 27326 transitions. [2024-12-02 15:28:22,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:28:22,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-12-02 15:28:22,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:22,811 INFO L225 Difference]: With dead ends: 19083 [2024-12-02 15:28:22,811 INFO L226 Difference]: Without dead ends: 15985 [2024-12-02 15:28:22,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:28:22,818 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 1445 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:22,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 389 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:28:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15985 states. [2024-12-02 15:28:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15985 to 6446. [2024-12-02 15:28:22,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6446 states, 6445 states have (on average 1.4373933281613653) internal successors, (9264), 6445 states have internal predecessors, (9264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6446 states to 6446 states and 9264 transitions. [2024-12-02 15:28:22,989 INFO L78 Accepts]: Start accepts. Automaton has 6446 states and 9264 transitions. Word has length 59 [2024-12-02 15:28:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:22,990 INFO L471 AbstractCegarLoop]: Abstraction has 6446 states and 9264 transitions. [2024-12-02 15:28:22,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:22,991 INFO L276 IsEmpty]: Start isEmpty. Operand 6446 states and 9264 transitions. [2024-12-02 15:28:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 15:28:22,994 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:22,994 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, 1, 1, 1, 1, 1] [2024-12-02 15:28:22,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 15:28:22,994 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:22,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:22,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1695106365, now seen corresponding path program 1 times [2024-12-02 15:28:22,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:22,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579138672] [2024-12-02 15:28:22,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:22,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:23,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:23,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579138672] [2024-12-02 15:28:23,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579138672] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:23,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:23,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 15:28:23,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133681964] [2024-12-02 15:28:23,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:23,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 15:28:23,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:23,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 15:28:23,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:28:23,374 INFO L87 Difference]: Start difference. First operand 6446 states and 9264 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:24,018 INFO L93 Difference]: Finished difference Result 15299 states and 22049 transitions. [2024-12-02 15:28:24,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:28:24,019 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 61 [2024-12-02 15:28:24,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:24,031 INFO L225 Difference]: With dead ends: 15299 [2024-12-02 15:28:24,031 INFO L226 Difference]: Without dead ends: 10109 [2024-12-02 15:28:24,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:28:24,036 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 1024 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:24,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 922 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:28:24,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10109 states. [2024-12-02 15:28:24,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10109 to 6318. [2024-12-02 15:28:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 6317 states have (on average 1.434383409846446) internal successors, (9061), 6317 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 9061 transitions. [2024-12-02 15:28:24,112 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 9061 transitions. Word has length 61 [2024-12-02 15:28:24,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:24,112 INFO L471 AbstractCegarLoop]: Abstraction has 6318 states and 9061 transitions. [2024-12-02 15:28:24,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 9061 transitions. [2024-12-02 15:28:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 15:28:24,114 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:24,114 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, 1, 1, 1, 1, 1] [2024-12-02 15:28:24,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 15:28:24,115 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:24,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:24,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1748259780, now seen corresponding path program 1 times [2024-12-02 15:28:24,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:24,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846577481] [2024-12-02 15:28:24,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:24,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:24,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:24,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846577481] [2024-12-02 15:28:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846577481] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:24,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:24,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 15:28:24,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239737555] [2024-12-02 15:28:24,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:24,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 15:28:24,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:24,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 15:28:24,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:28:24,408 INFO L87 Difference]: Start difference. First operand 6318 states and 9061 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:24,972 INFO L93 Difference]: Finished difference Result 15339 states and 22038 transitions. [2024-12-02 15:28:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:28:24,972 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 61 [2024-12-02 15:28:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:24,986 INFO L225 Difference]: With dead ends: 15339 [2024-12-02 15:28:24,986 INFO L226 Difference]: Without dead ends: 10065 [2024-12-02 15:28:24,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:28:24,992 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 968 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:24,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 721 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:28:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2024-12-02 15:28:25,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 6129. [2024-12-02 15:28:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6129 states, 6128 states have (on average 1.4319516971279374) internal successors, (8775), 6128 states have internal predecessors, (8775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:25,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6129 states to 6129 states and 8775 transitions. [2024-12-02 15:28:25,101 INFO L78 Accepts]: Start accepts. Automaton has 6129 states and 8775 transitions. Word has length 61 [2024-12-02 15:28:25,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:25,101 INFO L471 AbstractCegarLoop]: Abstraction has 6129 states and 8775 transitions. [2024-12-02 15:28:25,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:25,101 INFO L276 IsEmpty]: Start isEmpty. Operand 6129 states and 8775 transitions. [2024-12-02 15:28:25,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 15:28:25,103 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:25,103 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, 1, 1, 1, 1, 1] [2024-12-02 15:28:25,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 15:28:25,104 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:25,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash 11490693, now seen corresponding path program 1 times [2024-12-02 15:28:25,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:25,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873163362] [2024-12-02 15:28:25,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:25,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:25,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:25,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873163362] [2024-12-02 15:28:25,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873163362] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:25,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:25,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 15:28:25,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775500225] [2024-12-02 15:28:25,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:25,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 15:28:25,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:25,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 15:28:25,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:28:25,373 INFO L87 Difference]: Start difference. First operand 6129 states and 8775 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:25,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:25,848 INFO L93 Difference]: Finished difference Result 14937 states and 21487 transitions. [2024-12-02 15:28:25,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:28:25,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 61 [2024-12-02 15:28:25,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:25,864 INFO L225 Difference]: With dead ends: 14937 [2024-12-02 15:28:25,864 INFO L226 Difference]: Without dead ends: 9719 [2024-12-02 15:28:25,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:28:25,870 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 835 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:25,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 792 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:28:25,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9719 states. [2024-12-02 15:28:25,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9719 to 5980. [2024-12-02 15:28:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5980 states, 5979 states have (on average 1.4323465462451914) internal successors, (8564), 5979 states have internal predecessors, (8564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5980 states to 5980 states and 8564 transitions. [2024-12-02 15:28:25,968 INFO L78 Accepts]: Start accepts. Automaton has 5980 states and 8564 transitions. Word has length 61 [2024-12-02 15:28:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:25,969 INFO L471 AbstractCegarLoop]: Abstraction has 5980 states and 8564 transitions. [2024-12-02 15:28:25,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:25,969 INFO L276 IsEmpty]: Start isEmpty. Operand 5980 states and 8564 transitions. [2024-12-02 15:28:25,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 15:28:25,971 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:25,971 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, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:25,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 15:28:25,971 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:25,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:25,971 INFO L85 PathProgramCache]: Analyzing trace with hash -746765663, now seen corresponding path program 1 times [2024-12-02 15:28:25,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:25,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005135824] [2024-12-02 15:28:25,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:25,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:26,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:26,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005135824] [2024-12-02 15:28:26,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005135824] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:26,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:26,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:28:26,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026363680] [2024-12-02 15:28:26,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:26,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:28:26,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:26,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:28:26,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:28:26,027 INFO L87 Difference]: Start difference. First operand 5980 states and 8564 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:26,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:26,083 INFO L93 Difference]: Finished difference Result 9027 states and 12937 transitions. [2024-12-02 15:28:26,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:28:26,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 15:28:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:26,092 INFO L225 Difference]: With dead ends: 9027 [2024-12-02 15:28:26,093 INFO L226 Difference]: Without dead ends: 5797 [2024-12-02 15:28:26,095 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 [2024-12-02 15:28:26,095 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 150 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:26,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 526 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:26,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2024-12-02 15:28:26,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 5795. [2024-12-02 15:28:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5795 states, 5794 states have (on average 1.4126682775284778) internal successors, (8185), 5794 states have internal predecessors, (8185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5795 states to 5795 states and 8185 transitions. [2024-12-02 15:28:26,163 INFO L78 Accepts]: Start accepts. Automaton has 5795 states and 8185 transitions. Word has length 62 [2024-12-02 15:28:26,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:26,163 INFO L471 AbstractCegarLoop]: Abstraction has 5795 states and 8185 transitions. [2024-12-02 15:28:26,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand 5795 states and 8185 transitions. [2024-12-02 15:28:26,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 15:28:26,165 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:26,165 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, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:26,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 15:28:26,165 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:26,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash -691619625, now seen corresponding path program 1 times [2024-12-02 15:28:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:26,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226603959] [2024-12-02 15:28:26,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:26,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:26,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226603959] [2024-12-02 15:28:26,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226603959] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:26,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:26,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:28:26,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615266627] [2024-12-02 15:28:26,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:26,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:28:26,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:26,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:28:26,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:28:26,220 INFO L87 Difference]: Start difference. First operand 5795 states and 8185 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:26,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:26,253 INFO L93 Difference]: Finished difference Result 8079 states and 11408 transitions. [2024-12-02 15:28:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:28:26,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 15:28:26,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:26,263 INFO L225 Difference]: With dead ends: 8079 [2024-12-02 15:28:26,263 INFO L226 Difference]: Without dead ends: 5014 [2024-12-02 15:28:26,266 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 [2024-12-02 15:28:26,266 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 136 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:26,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 515 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:26,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5014 states. [2024-12-02 15:28:26,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5014 to 5012. [2024-12-02 15:28:26,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5012 states, 5011 states have (on average 1.3883456395928957) internal successors, (6957), 5011 states have internal predecessors, (6957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 6957 transitions. [2024-12-02 15:28:26,327 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 6957 transitions. Word has length 62 [2024-12-02 15:28:26,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:26,327 INFO L471 AbstractCegarLoop]: Abstraction has 5012 states and 6957 transitions. [2024-12-02 15:28:26,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:26,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 6957 transitions. [2024-12-02 15:28:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 15:28:26,329 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:26,329 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, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:26,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 15:28:26,329 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:26,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:26,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1051063940, now seen corresponding path program 1 times [2024-12-02 15:28:26,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:26,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087204944] [2024-12-02 15:28:26,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:26,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:26,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087204944] [2024-12-02 15:28:26,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087204944] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:26,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:26,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:28:26,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492421821] [2024-12-02 15:28:26,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:26,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:28:26,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:26,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:28:26,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:28:26,381 INFO L87 Difference]: Start difference. First operand 5012 states and 6957 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:26,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:26,409 INFO L93 Difference]: Finished difference Result 6614 states and 9183 transitions. [2024-12-02 15:28:26,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:28:26,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 15:28:26,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:26,416 INFO L225 Difference]: With dead ends: 6614 [2024-12-02 15:28:26,417 INFO L226 Difference]: Without dead ends: 3858 [2024-12-02 15:28:26,419 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 [2024-12-02 15:28:26,419 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 148 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:26,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 526 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2024-12-02 15:28:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3856. [2024-12-02 15:28:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3855 states have (on average 1.364461738002594) internal successors, (5260), 3855 states have internal predecessors, (5260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 5260 transitions. [2024-12-02 15:28:26,465 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 5260 transitions. Word has length 62 [2024-12-02 15:28:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:26,465 INFO L471 AbstractCegarLoop]: Abstraction has 3856 states and 5260 transitions. [2024-12-02 15:28:26,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 5260 transitions. [2024-12-02 15:28:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 15:28:26,467 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:26,467 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, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:26,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 15:28:26,467 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:26,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:26,468 INFO L85 PathProgramCache]: Analyzing trace with hash -751537894, now seen corresponding path program 1 times [2024-12-02 15:28:26,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:26,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795229761] [2024-12-02 15:28:26,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:26,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:26,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:26,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795229761] [2024-12-02 15:28:26,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795229761] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:26,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:26,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:28:26,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528483472] [2024-12-02 15:28:26,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:26,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:28:26,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:26,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:28:26,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:28:26,524 INFO L87 Difference]: Start difference. First operand 3856 states and 5260 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:26,570 INFO L93 Difference]: Finished difference Result 7099 states and 9747 transitions. [2024-12-02 15:28:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:28:26,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-12-02 15:28:26,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:26,577 INFO L225 Difference]: With dead ends: 7099 [2024-12-02 15:28:26,577 INFO L226 Difference]: Without dead ends: 5180 [2024-12-02 15:28:26,580 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 [2024-12-02 15:28:26,580 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 173 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:26,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 346 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5180 states. [2024-12-02 15:28:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5180 to 3667. [2024-12-02 15:28:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 3666 states have (on average 1.363884342607747) internal successors, (5000), 3666 states have internal predecessors, (5000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 5000 transitions. [2024-12-02 15:28:26,626 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 5000 transitions. Word has length 63 [2024-12-02 15:28:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:26,627 INFO L471 AbstractCegarLoop]: Abstraction has 3667 states and 5000 transitions. [2024-12-02 15:28:26,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:26,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 5000 transitions. [2024-12-02 15:28:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 15:28:26,628 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:26,628 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, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:26,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 15:28:26,629 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:26,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash 296287221, now seen corresponding path program 1 times [2024-12-02 15:28:26,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:26,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630398583] [2024-12-02 15:28:26,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:26,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:28,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:28,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630398583] [2024-12-02 15:28:28,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630398583] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:28,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:28,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-12-02 15:28:28,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580788253] [2024-12-02 15:28:28,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:28,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:28:28,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:28,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:28:28,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:28:28,007 INFO L87 Difference]: Start difference. First operand 3667 states and 5000 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:30,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:30,628 INFO L93 Difference]: Finished difference Result 6811 states and 9341 transitions. [2024-12-02 15:28:30,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 15:28:30,629 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 63 [2024-12-02 15:28:30,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:30,637 INFO L225 Difference]: With dead ends: 6811 [2024-12-02 15:28:30,637 INFO L226 Difference]: Without dead ends: 6744 [2024-12-02 15:28:30,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=321, Invalid=1571, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 15:28:30,640 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 2009 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:30,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2009 Valid, 3468 Invalid, 2571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2557 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 15:28:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6744 states. [2024-12-02 15:28:30,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6744 to 3679. [2024-12-02 15:28:30,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3679 states, 3678 states have (on average 1.3635127786840675) internal successors, (5015), 3678 states have internal predecessors, (5015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:30,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3679 states to 3679 states and 5015 transitions. [2024-12-02 15:28:30,686 INFO L78 Accepts]: Start accepts. Automaton has 3679 states and 5015 transitions. Word has length 63 [2024-12-02 15:28:30,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:30,686 INFO L471 AbstractCegarLoop]: Abstraction has 3679 states and 5015 transitions. [2024-12-02 15:28:30,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3679 states and 5015 transitions. [2024-12-02 15:28:30,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 15:28:30,688 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:30,688 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, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:30,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 15:28:30,688 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:30,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:30,689 INFO L85 PathProgramCache]: Analyzing trace with hash -678356547, now seen corresponding path program 1 times [2024-12-02 15:28:30,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:30,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374205239] [2024-12-02 15:28:30,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:30,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:31,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:31,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374205239] [2024-12-02 15:28:31,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374205239] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:31,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:31,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 15:28:31,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743385343] [2024-12-02 15:28:31,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:31,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:28:31,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:31,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:28:31,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:28:31,270 INFO L87 Difference]: Start difference. First operand 3679 states and 5015 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:31,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:31,968 INFO L93 Difference]: Finished difference Result 8031 states and 11044 transitions. [2024-12-02 15:28:31,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 15:28:31,969 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 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 63 [2024-12-02 15:28:31,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:31,974 INFO L225 Difference]: With dead ends: 8031 [2024-12-02 15:28:31,974 INFO L226 Difference]: Without dead ends: 7643 [2024-12-02 15:28:31,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2024-12-02 15:28:31,977 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 2118 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2118 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:31,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2118 Valid, 1425 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:28:31,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7643 states. [2024-12-02 15:28:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7643 to 3590. [2024-12-02 15:28:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3589 states have (on average 1.3636110337141265) internal successors, (4894), 3589 states have internal predecessors, (4894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:32,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 4894 transitions. [2024-12-02 15:28:32,035 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 4894 transitions. Word has length 63 [2024-12-02 15:28:32,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:32,035 INFO L471 AbstractCegarLoop]: Abstraction has 3590 states and 4894 transitions. [2024-12-02 15:28:32,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:32,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 4894 transitions. [2024-12-02 15:28:32,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 15:28:32,037 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:32,037 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, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:32,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 15:28:32,037 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:32,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:32,038 INFO L85 PathProgramCache]: Analyzing trace with hash 393964366, now seen corresponding path program 1 times [2024-12-02 15:28:32,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:32,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701466088] [2024-12-02 15:28:32,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:32,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:32,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701466088] [2024-12-02 15:28:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701466088] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:32,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:32,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:28:32,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117877664] [2024-12-02 15:28:32,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:32,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:28:32,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:32,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:28:32,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:28:32,080 INFO L87 Difference]: Start difference. First operand 3590 states and 4894 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:32,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:32,138 INFO L93 Difference]: Finished difference Result 6698 states and 9187 transitions. [2024-12-02 15:28:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:28:32,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-12-02 15:28:32,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:32,142 INFO L225 Difference]: With dead ends: 6698 [2024-12-02 15:28:32,143 INFO L226 Difference]: Without dead ends: 4803 [2024-12-02 15:28:32,145 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 [2024-12-02 15:28:32,145 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 171 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:32,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 327 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2024-12-02 15:28:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 3373. [2024-12-02 15:28:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3373 states, 3372 states have (on average 1.3629893238434163) internal successors, (4596), 3372 states have internal predecessors, (4596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 4596 transitions. [2024-12-02 15:28:32,195 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 4596 transitions. Word has length 63 [2024-12-02 15:28:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:32,195 INFO L471 AbstractCegarLoop]: Abstraction has 3373 states and 4596 transitions. [2024-12-02 15:28:32,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:32,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 4596 transitions. [2024-12-02 15:28:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 15:28:32,197 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:32,197 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:32,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 15:28:32,197 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:32,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash -771182262, now seen corresponding path program 1 times [2024-12-02 15:28:32,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:32,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148733169] [2024-12-02 15:28:32,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:32,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:33,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:33,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148733169] [2024-12-02 15:28:33,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148733169] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:33,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:33,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 15:28:33,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656760364] [2024-12-02 15:28:33,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:33,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 15:28:33,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:33,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 15:28:33,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:28:33,284 INFO L87 Difference]: Start difference. First operand 3373 states and 4596 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:35,403 INFO L93 Difference]: Finished difference Result 7164 states and 9828 transitions. [2024-12-02 15:28:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 15:28:35,404 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 15:28:35,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:35,408 INFO L225 Difference]: With dead ends: 7164 [2024-12-02 15:28:35,408 INFO L226 Difference]: Without dead ends: 7026 [2024-12-02 15:28:35,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 15:28:35,410 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 1989 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 1972 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:35,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 3147 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1972 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:28:35,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7026 states. [2024-12-02 15:28:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7026 to 3350. [2024-12-02 15:28:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3349 states have (on average 1.36249626754255) internal successors, (4563), 3349 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 4563 transitions. [2024-12-02 15:28:35,445 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 4563 transitions. Word has length 64 [2024-12-02 15:28:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:35,445 INFO L471 AbstractCegarLoop]: Abstraction has 3350 states and 4563 transitions. [2024-12-02 15:28:35,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 4563 transitions. [2024-12-02 15:28:35,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 15:28:35,446 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:35,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:35,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 15:28:35,446 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:35,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:35,447 INFO L85 PathProgramCache]: Analyzing trace with hash 880460014, now seen corresponding path program 1 times [2024-12-02 15:28:35,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:35,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027290946] [2024-12-02 15:28:35,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:35,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:35,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:35,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027290946] [2024-12-02 15:28:35,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027290946] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:35,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:35,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:28:35,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831516763] [2024-12-02 15:28:35,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:35,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:28:35,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:35,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:28:35,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:28:35,519 INFO L87 Difference]: Start difference. First operand 3350 states and 4563 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:35,570 INFO L93 Difference]: Finished difference Result 3356 states and 4566 transitions. [2024-12-02 15:28:35,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:28:35,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-12-02 15:28:35,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:35,573 INFO L225 Difference]: With dead ends: 3356 [2024-12-02 15:28:35,573 INFO L226 Difference]: Without dead ends: 2897 [2024-12-02 15:28:35,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:28:35,574 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 625 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:35,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 620 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:35,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2024-12-02 15:28:35,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2893. [2024-12-02 15:28:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2892 states have (on average 1.3641078838174274) internal successors, (3945), 2892 states have internal predecessors, (3945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 3945 transitions. [2024-12-02 15:28:35,594 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 3945 transitions. Word has length 67 [2024-12-02 15:28:35,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:35,594 INFO L471 AbstractCegarLoop]: Abstraction has 2893 states and 3945 transitions. [2024-12-02 15:28:35,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:35,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 3945 transitions. [2024-12-02 15:28:35,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:28:35,595 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:35,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:35,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 15:28:35,595 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:35,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:35,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1617522588, now seen corresponding path program 1 times [2024-12-02 15:28:35,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:35,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462891165] [2024-12-02 15:28:35,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:35,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:35,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:35,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462891165] [2024-12-02 15:28:35,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462891165] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:35,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:35,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:28:35,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164657714] [2024-12-02 15:28:35,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:35,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:28:35,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:35,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:28:35,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:28:35,655 INFO L87 Difference]: Start difference. First operand 2893 states and 3945 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:35,681 INFO L93 Difference]: Finished difference Result 7266 states and 10027 transitions. [2024-12-02 15:28:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:28:35,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2024-12-02 15:28:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:35,684 INFO L225 Difference]: With dead ends: 7266 [2024-12-02 15:28:35,684 INFO L226 Difference]: Without dead ends: 4977 [2024-12-02 15:28:35,686 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 [2024-12-02 15:28:35,686 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 118 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:35,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 439 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2024-12-02 15:28:35,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4633. [2024-12-02 15:28:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4633 states, 4632 states have (on average 1.3693868739205526) internal successors, (6343), 4632 states have internal predecessors, (6343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4633 states to 4633 states and 6343 transitions. [2024-12-02 15:28:35,721 INFO L78 Accepts]: Start accepts. Automaton has 4633 states and 6343 transitions. Word has length 70 [2024-12-02 15:28:35,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:35,721 INFO L471 AbstractCegarLoop]: Abstraction has 4633 states and 6343 transitions. [2024-12-02 15:28:35,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4633 states and 6343 transitions. [2024-12-02 15:28:35,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-02 15:28:35,722 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:35,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:35,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 15:28:35,722 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:35,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash 121806462, now seen corresponding path program 1 times [2024-12-02 15:28:35,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:35,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400664854] [2024-12-02 15:28:35,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:35,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:35,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:35,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400664854] [2024-12-02 15:28:35,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400664854] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:35,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:35,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:28:35,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644218800] [2024-12-02 15:28:35,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:35,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:28:35,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:35,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:28:35,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:28:35,794 INFO L87 Difference]: Start difference. First operand 4633 states and 6343 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:35,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:35,826 INFO L93 Difference]: Finished difference Result 12281 states and 16905 transitions. [2024-12-02 15:28:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:28:35,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-12-02 15:28:35,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:35,832 INFO L225 Difference]: With dead ends: 12281 [2024-12-02 15:28:35,832 INFO L226 Difference]: Without dead ends: 8252 [2024-12-02 15:28:35,835 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 [2024-12-02 15:28:35,835 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 107 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:35,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 431 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:35,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8252 states. [2024-12-02 15:28:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8252 to 7662. [2024-12-02 15:28:35,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7662 states, 7661 states have (on average 1.368359222033677) internal successors, (10483), 7661 states have internal predecessors, (10483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:35,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7662 states to 7662 states and 10483 transitions. [2024-12-02 15:28:35,896 INFO L78 Accepts]: Start accepts. Automaton has 7662 states and 10483 transitions. Word has length 71 [2024-12-02 15:28:35,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:35,896 INFO L471 AbstractCegarLoop]: Abstraction has 7662 states and 10483 transitions. [2024-12-02 15:28:35,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:35,896 INFO L276 IsEmpty]: Start isEmpty. Operand 7662 states and 10483 transitions. [2024-12-02 15:28:35,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 15:28:35,897 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:35,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:35,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 15:28:35,898 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:35,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:35,898 INFO L85 PathProgramCache]: Analyzing trace with hash -577663364, now seen corresponding path program 1 times [2024-12-02 15:28:35,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:35,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311242066] [2024-12-02 15:28:35,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:35,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:35,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:35,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311242066] [2024-12-02 15:28:35,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311242066] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:35,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:35,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:28:35,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003938952] [2024-12-02 15:28:35,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:35,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:28:35,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:35,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:28:35,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:28:35,956 INFO L87 Difference]: Start difference. First operand 7662 states and 10483 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:36,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:36,001 INFO L93 Difference]: Finished difference Result 20534 states and 28057 transitions. [2024-12-02 15:28:36,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:28:36,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2024-12-02 15:28:36,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:36,011 INFO L225 Difference]: With dead ends: 20534 [2024-12-02 15:28:36,011 INFO L226 Difference]: Without dead ends: 13366 [2024-12-02 15:28:36,016 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 [2024-12-02 15:28:36,016 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 113 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:36,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 430 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:36,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13366 states. [2024-12-02 15:28:36,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13366 to 12188. [2024-12-02 15:28:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12188 states, 12187 states have (on average 1.353245261344055) internal successors, (16492), 12187 states have internal predecessors, (16492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12188 states to 12188 states and 16492 transitions. [2024-12-02 15:28:36,107 INFO L78 Accepts]: Start accepts. Automaton has 12188 states and 16492 transitions. Word has length 73 [2024-12-02 15:28:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:36,107 INFO L471 AbstractCegarLoop]: Abstraction has 12188 states and 16492 transitions. [2024-12-02 15:28:36,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:36,107 INFO L276 IsEmpty]: Start isEmpty. Operand 12188 states and 16492 transitions. [2024-12-02 15:28:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 15:28:36,108 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:36,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:36,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 15:28:36,108 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:36,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:36,108 INFO L85 PathProgramCache]: Analyzing trace with hash -686006937, now seen corresponding path program 1 times [2024-12-02 15:28:36,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:36,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500466375] [2024-12-02 15:28:36,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:36,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:36,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:36,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500466375] [2024-12-02 15:28:36,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500466375] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:36,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:36,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:28:36,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119118368] [2024-12-02 15:28:36,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:36,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:28:36,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:36,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:28:36,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:28:36,266 INFO L87 Difference]: Start difference. First operand 12188 states and 16492 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) [2024-12-02 15:28:36,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:36,305 INFO L93 Difference]: Finished difference Result 13462 states and 18189 transitions. [2024-12-02 15:28:36,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:28:36,306 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 74 [2024-12-02 15:28:36,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:36,314 INFO L225 Difference]: With dead ends: 13462 [2024-12-02 15:28:36,315 INFO L226 Difference]: Without dead ends: 13460 [2024-12-02 15:28:36,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:28:36,318 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:36,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 965 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:36,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13460 states. [2024-12-02 15:28:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13460 to 13460. [2024-12-02 15:28:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13460 states, 13459 states have (on average 1.3198603165168288) internal successors, (17764), 13459 states have internal predecessors, (17764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13460 states to 13460 states and 17764 transitions. [2024-12-02 15:28:36,421 INFO L78 Accepts]: Start accepts. Automaton has 13460 states and 17764 transitions. Word has length 74 [2024-12-02 15:28:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:36,421 INFO L471 AbstractCegarLoop]: Abstraction has 13460 states and 17764 transitions. [2024-12-02 15:28:36,422 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) [2024-12-02 15:28:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 13460 states and 17764 transitions. [2024-12-02 15:28:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 15:28:36,422 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:36,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:36,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 15:28:36,423 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:36,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:36,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1483002414, now seen corresponding path program 1 times [2024-12-02 15:28:36,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:36,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366325858] [2024-12-02 15:28:36,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:36,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:36,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:36,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366325858] [2024-12-02 15:28:36,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366325858] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:28:36,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:28:36,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:28:36,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779165720] [2024-12-02 15:28:36,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:28:36,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:28:36,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:36,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:28:36,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:28:36,464 INFO L87 Difference]: Start difference. First operand 13460 states and 17764 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2024-12-02 15:28:36,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:36,557 INFO L93 Difference]: Finished difference Result 32928 states and 43378 transitions. [2024-12-02 15:28:36,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:28:36,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 75 [2024-12-02 15:28:36,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:36,575 INFO L225 Difference]: With dead ends: 32928 [2024-12-02 15:28:36,575 INFO L226 Difference]: Without dead ends: 19962 [2024-12-02 15:28:36,582 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 [2024-12-02 15:28:36,582 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 132 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:36,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 318 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:28:36,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19962 states. [2024-12-02 15:28:36,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19962 to 19748. [2024-12-02 15:28:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19748 states, 19747 states have (on average 1.293563579277865) internal successors, (25544), 19747 states have internal predecessors, (25544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19748 states to 19748 states and 25544 transitions. [2024-12-02 15:28:36,788 INFO L78 Accepts]: Start accepts. Automaton has 19748 states and 25544 transitions. Word has length 75 [2024-12-02 15:28:36,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:36,788 INFO L471 AbstractCegarLoop]: Abstraction has 19748 states and 25544 transitions. [2024-12-02 15:28:36,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2024-12-02 15:28:36,788 INFO L276 IsEmpty]: Start isEmpty. Operand 19748 states and 25544 transitions. [2024-12-02 15:28:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:28:36,791 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:36,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:36,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 15:28:36,791 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:36,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:36,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1263057428, now seen corresponding path program 1 times [2024-12-02 15:28:36,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:36,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673222912] [2024-12-02 15:28:36,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:37,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:37,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673222912] [2024-12-02 15:28:37,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673222912] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:28:37,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244484861] [2024-12-02 15:28:37,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:37,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:28:37,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:28:37,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:28:37,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:28:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:37,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 15:28:37,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:28:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:38,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:28:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:39,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244484861] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:28:39,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:28:39,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 14] total 31 [2024-12-02 15:28:39,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105825968] [2024-12-02 15:28:39,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:28:39,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 15:28:39,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:39,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 15:28:39,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:28:39,567 INFO L87 Difference]: Start difference. First operand 19748 states and 25544 transitions. Second operand has 32 states, 32 states have (on average 7.375) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:48,738 INFO L93 Difference]: Finished difference Result 133858 states and 170775 transitions. [2024-12-02 15:28:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-12-02 15:28:48,738 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.375) internal successors, (236), 31 states have internal predecessors, (236), 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 94 [2024-12-02 15:28:48,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:48,843 INFO L225 Difference]: With dead ends: 133858 [2024-12-02 15:28:48,843 INFO L226 Difference]: Without dead ends: 123124 [2024-12-02 15:28:48,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7561 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4235, Invalid=18115, Unknown=0, NotChecked=0, Total=22350 [2024-12-02 15:28:48,861 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 5115 mSDsluCounter, 5685 mSDsCounter, 0 mSdLazyCounter, 5761 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5115 SdHoareTripleChecker+Valid, 6037 SdHoareTripleChecker+Invalid, 5855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 5761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:48,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5115 Valid, 6037 Invalid, 5855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 5761 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 15:28:48,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123124 states. [2024-12-02 15:28:49,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123124 to 20398. [2024-12-02 15:28:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20398 states, 20397 states have (on average 1.291856645585135) internal successors, (26350), 20397 states have internal predecessors, (26350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20398 states to 20398 states and 26350 transitions. [2024-12-02 15:28:49,437 INFO L78 Accepts]: Start accepts. Automaton has 20398 states and 26350 transitions. Word has length 94 [2024-12-02 15:28:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:49,437 INFO L471 AbstractCegarLoop]: Abstraction has 20398 states and 26350 transitions. [2024-12-02 15:28:49,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.375) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 20398 states and 26350 transitions. [2024-12-02 15:28:49,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:28:49,440 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:49,441 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:49,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:28:49,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:28:49,641 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:49,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:49,642 INFO L85 PathProgramCache]: Analyzing trace with hash 225914628, now seen corresponding path program 1 times [2024-12-02 15:28:49,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:49,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999978192] [2024-12-02 15:28:49,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:49,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:49,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:49,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999978192] [2024-12-02 15:28:49,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999978192] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:28:49,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292802991] [2024-12-02 15:28:49,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:49,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:28:49,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:28:49,943 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:28:49,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:28:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:50,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 15:28:50,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:28:50,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:50,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:28:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:51,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292802991] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:28:51,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:28:51,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 29 [2024-12-02 15:28:51,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119479924] [2024-12-02 15:28:51,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:28:51,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 15:28:51,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:51,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 15:28:51,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-12-02 15:28:51,801 INFO L87 Difference]: Start difference. First operand 20398 states and 26350 transitions. Second operand has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:04,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:04,644 INFO L93 Difference]: Finished difference Result 154065 states and 196001 transitions. [2024-12-02 15:29:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2024-12-02 15:29:04,645 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 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 94 [2024-12-02 15:29:04,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:04,764 INFO L225 Difference]: With dead ends: 154065 [2024-12-02 15:29:04,764 INFO L226 Difference]: Without dead ends: 143475 [2024-12-02 15:29:04,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20968 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=7450, Invalid=44762, Unknown=0, NotChecked=0, Total=52212 [2024-12-02 15:29:04,790 INFO L435 NwaCegarLoop]: 332 mSDtfsCounter, 9468 mSDsluCounter, 5658 mSDsCounter, 0 mSdLazyCounter, 5689 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9468 SdHoareTripleChecker+Valid, 5990 SdHoareTripleChecker+Invalid, 5844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 5689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:04,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9468 Valid, 5990 Invalid, 5844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 5689 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 15:29:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143475 states. [2024-12-02 15:29:05,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143475 to 43404. [2024-12-02 15:29:05,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43404 states, 43403 states have (on average 1.291154989286455) internal successors, (56040), 43403 states have internal predecessors, (56040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43404 states to 43404 states and 56040 transitions. [2024-12-02 15:29:05,494 INFO L78 Accepts]: Start accepts. Automaton has 43404 states and 56040 transitions. Word has length 94 [2024-12-02 15:29:05,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:05,494 INFO L471 AbstractCegarLoop]: Abstraction has 43404 states and 56040 transitions. [2024-12-02 15:29:05,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:05,494 INFO L276 IsEmpty]: Start isEmpty. Operand 43404 states and 56040 transitions. [2024-12-02 15:29:05,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:29:05,499 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:05,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:05,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:29:05,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:05,700 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:05,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:05,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1360167634, now seen corresponding path program 1 times [2024-12-02 15:29:05,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:05,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813416887] [2024-12-02 15:29:05,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:05,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:05,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:05,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813416887] [2024-12-02 15:29:05,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813416887] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:05,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:29:05,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 15:29:05,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050736839] [2024-12-02 15:29:05,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:05,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 15:29:05,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:05,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 15:29:05,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:29:05,910 INFO L87 Difference]: Start difference. First operand 43404 states and 56040 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:06,553 INFO L93 Difference]: Finished difference Result 91455 states and 117714 transitions. [2024-12-02 15:29:06,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 15:29:06,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 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 94 [2024-12-02 15:29:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:06,600 INFO L225 Difference]: With dead ends: 91455 [2024-12-02 15:29:06,600 INFO L226 Difference]: Without dead ends: 73476 [2024-12-02 15:29:06,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:29:06,610 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 1173 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:06,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 802 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:29:06,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73476 states. [2024-12-02 15:29:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73476 to 64177. [2024-12-02 15:29:07,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64177 states, 64176 states have (on average 1.2908563949139866) internal successors, (82842), 64176 states have internal predecessors, (82842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64177 states to 64177 states and 82842 transitions. [2024-12-02 15:29:07,254 INFO L78 Accepts]: Start accepts. Automaton has 64177 states and 82842 transitions. Word has length 94 [2024-12-02 15:29:07,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:07,254 INFO L471 AbstractCegarLoop]: Abstraction has 64177 states and 82842 transitions. [2024-12-02 15:29:07,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 64177 states and 82842 transitions. [2024-12-02 15:29:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 15:29:07,259 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:07,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:07,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 15:29:07,260 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:07,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:07,260 INFO L85 PathProgramCache]: Analyzing trace with hash 284791237, now seen corresponding path program 1 times [2024-12-02 15:29:07,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:07,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768534867] [2024-12-02 15:29:07,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:07,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:29:07,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:07,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768534867] [2024-12-02 15:29:07,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768534867] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:07,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:29:07,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:29:07,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132667576] [2024-12-02 15:29:07,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:07,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:29:07,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:07,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:29:07,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:29:07,299 INFO L87 Difference]: Start difference. First operand 64177 states and 82842 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:07,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:07,585 INFO L93 Difference]: Finished difference Result 125873 states and 162815 transitions. [2024-12-02 15:29:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:29:07,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 95 [2024-12-02 15:29:07,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:07,636 INFO L225 Difference]: With dead ends: 125873 [2024-12-02 15:29:07,636 INFO L226 Difference]: Without dead ends: 63533 [2024-12-02 15:29:07,664 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 [2024-12-02 15:29:07,665 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 159 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:07,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 202 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:29:07,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63533 states. [2024-12-02 15:29:08,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63533 to 63533. [2024-12-02 15:29:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63533 states, 63532 states have (on average 1.2785525404520557) internal successors, (81229), 63532 states have internal predecessors, (81229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63533 states to 63533 states and 81229 transitions. [2024-12-02 15:29:08,432 INFO L78 Accepts]: Start accepts. Automaton has 63533 states and 81229 transitions. Word has length 95 [2024-12-02 15:29:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:08,433 INFO L471 AbstractCegarLoop]: Abstraction has 63533 states and 81229 transitions. [2024-12-02 15:29:08,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 63533 states and 81229 transitions. [2024-12-02 15:29:08,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 15:29:08,441 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:08,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:08,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 15:29:08,442 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:08,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:08,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2024837326, now seen corresponding path program 1 times [2024-12-02 15:29:08,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:08,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374561844] [2024-12-02 15:29:08,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:08,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:08,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:08,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374561844] [2024-12-02 15:29:08,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374561844] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:29:08,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581661892] [2024-12-02 15:29:08,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:08,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:08,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:29:08,574 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:29:08,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:29:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:08,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 15:29:08,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:29:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:08,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:29:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:08,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581661892] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:29:08,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:29:08,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-12-02 15:29:08,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537982603] [2024-12-02 15:29:08,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:29:08,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:29:08,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:08,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:29:08,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:29:08,984 INFO L87 Difference]: Start difference. First operand 63533 states and 81229 transitions. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:09,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:09,397 INFO L93 Difference]: Finished difference Result 180965 states and 229915 transitions. [2024-12-02 15:29:09,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:29:09,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-12-02 15:29:09,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:09,492 INFO L225 Difference]: With dead ends: 180965 [2024-12-02 15:29:09,492 INFO L226 Difference]: Without dead ends: 119466 [2024-12-02 15:29:09,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:29:09,524 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 438 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:09,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 966 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:29:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119466 states. [2024-12-02 15:29:10,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119466 to 93371. [2024-12-02 15:29:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93371 states, 93370 states have (on average 1.2727535611009961) internal successors, (118837), 93370 states have internal predecessors, (118837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93371 states to 93371 states and 118837 transitions. [2024-12-02 15:29:10,492 INFO L78 Accepts]: Start accepts. Automaton has 93371 states and 118837 transitions. Word has length 95 [2024-12-02 15:29:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:10,492 INFO L471 AbstractCegarLoop]: Abstraction has 93371 states and 118837 transitions. [2024-12-02 15:29:10,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:10,492 INFO L276 IsEmpty]: Start isEmpty. Operand 93371 states and 118837 transitions. [2024-12-02 15:29:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 15:29:10,500 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:10,500 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:10,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:29:10,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:10,701 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:10,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash -871075362, now seen corresponding path program 1 times [2024-12-02 15:29:10,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:10,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714315830] [2024-12-02 15:29:10,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:10,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:29:10,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:10,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714315830] [2024-12-02 15:29:10,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714315830] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:10,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:29:10,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:29:10,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787920479] [2024-12-02 15:29:10,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:10,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:29:10,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:10,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:29:10,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:29:10,880 INFO L87 Difference]: Start difference. First operand 93371 states and 118837 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:11,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:11,175 INFO L93 Difference]: Finished difference Result 173529 states and 221284 transitions. [2024-12-02 15:29:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:29:11,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 102 [2024-12-02 15:29:11,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:11,242 INFO L225 Difference]: With dead ends: 173529 [2024-12-02 15:29:11,242 INFO L226 Difference]: Without dead ends: 81437 [2024-12-02 15:29:11,277 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 [2024-12-02 15:29:11,277 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 152 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:11,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 177 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:29:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81437 states. [2024-12-02 15:29:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81437 to 79646. [2024-12-02 15:29:12,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79646 states, 79645 states have (on average 1.2567267248414842) internal successors, (100092), 79645 states have internal predecessors, (100092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:12,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79646 states to 79646 states and 100092 transitions. [2024-12-02 15:29:12,203 INFO L78 Accepts]: Start accepts. Automaton has 79646 states and 100092 transitions. Word has length 102 [2024-12-02 15:29:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:12,204 INFO L471 AbstractCegarLoop]: Abstraction has 79646 states and 100092 transitions. [2024-12-02 15:29:12,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 79646 states and 100092 transitions. [2024-12-02 15:29:12,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 15:29:12,214 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:12,214 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:12,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 15:29:12,215 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:12,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash 329626231, now seen corresponding path program 1 times [2024-12-02 15:29:12,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:12,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950324791] [2024-12-02 15:29:12,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:12,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:12,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:12,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950324791] [2024-12-02 15:29:12,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950324791] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:29:12,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583692460] [2024-12-02 15:29:12,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:12,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:12,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:29:12,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:29:12,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:29:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:12,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 15:29:12,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:29:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:12,769 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:29:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:12,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583692460] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:29:12,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:29:12,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2024-12-02 15:29:12,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029065476] [2024-12-02 15:29:12,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:29:12,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:29:12,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:12,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:29:12,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:29:12,880 INFO L87 Difference]: Start difference. First operand 79646 states and 100092 transitions. Second operand has 14 states, 14 states have (on average 19.642857142857142) internal successors, (275), 14 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:13,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:13,365 INFO L93 Difference]: Finished difference Result 163383 states and 204266 transitions. [2024-12-02 15:29:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:29:13,365 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.642857142857142) internal successors, (275), 14 states have internal predecessors, (275), 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 103 [2024-12-02 15:29:13,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:13,451 INFO L225 Difference]: With dead ends: 163383 [2024-12-02 15:29:13,451 INFO L226 Difference]: Without dead ends: 100827 [2024-12-02 15:29:13,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:29:13,484 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 1483 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:13,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 660 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:29:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100827 states. [2024-12-02 15:29:14,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100827 to 84490. [2024-12-02 15:29:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84490 states, 84489 states have (on average 1.250103563777533) internal successors, (105620), 84489 states have internal predecessors, (105620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84490 states to 84490 states and 105620 transitions. [2024-12-02 15:29:14,417 INFO L78 Accepts]: Start accepts. Automaton has 84490 states and 105620 transitions. Word has length 103 [2024-12-02 15:29:14,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:14,417 INFO L471 AbstractCegarLoop]: Abstraction has 84490 states and 105620 transitions. [2024-12-02 15:29:14,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.642857142857142) internal successors, (275), 14 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:14,417 INFO L276 IsEmpty]: Start isEmpty. Operand 84490 states and 105620 transitions. [2024-12-02 15:29:14,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 15:29:14,424 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:14,424 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:14,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 15:29:14,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:14,624 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:14,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:14,625 INFO L85 PathProgramCache]: Analyzing trace with hash 445467963, now seen corresponding path program 1 times [2024-12-02 15:29:14,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:14,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539678682] [2024-12-02 15:29:14,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:14,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:14,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:14,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539678682] [2024-12-02 15:29:14,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539678682] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:14,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:29:14,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:29:14,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840555902] [2024-12-02 15:29:14,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:14,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:29:14,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:14,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:29:14,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:29:14,675 INFO L87 Difference]: Start difference. First operand 84490 states and 105620 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:15,003 INFO L93 Difference]: Finished difference Result 165160 states and 206333 transitions. [2024-12-02 15:29:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:29:15,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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 104 [2024-12-02 15:29:15,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:15,070 INFO L225 Difference]: With dead ends: 165160 [2024-12-02 15:29:15,071 INFO L226 Difference]: Without dead ends: 81829 [2024-12-02 15:29:15,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:29:15,104 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 355 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:15,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 360 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:29:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81829 states. [2024-12-02 15:29:16,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81829 to 77081. [2024-12-02 15:29:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77081 states, 77080 states have (on average 1.2280098598858329) internal successors, (94655), 77080 states have internal predecessors, (94655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:16,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77081 states to 77081 states and 94655 transitions. [2024-12-02 15:29:16,147 INFO L78 Accepts]: Start accepts. Automaton has 77081 states and 94655 transitions. Word has length 104 [2024-12-02 15:29:16,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:16,148 INFO L471 AbstractCegarLoop]: Abstraction has 77081 states and 94655 transitions. [2024-12-02 15:29:16,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:16,148 INFO L276 IsEmpty]: Start isEmpty. Operand 77081 states and 94655 transitions. [2024-12-02 15:29:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 15:29:16,154 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:16,154 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:16,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 15:29:16,155 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:16,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:16,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2047133199, now seen corresponding path program 1 times [2024-12-02 15:29:16,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:16,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684986018] [2024-12-02 15:29:16,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:16,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:16,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:16,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684986018] [2024-12-02 15:29:16,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684986018] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:29:16,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126420490] [2024-12-02 15:29:16,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:16,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:16,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:29:16,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:29:16,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:29:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:16,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 15:29:16,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:29:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:16,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:29:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:16,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126420490] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:29:16,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:29:16,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2024-12-02 15:29:16,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300666414] [2024-12-02 15:29:16,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:29:16,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:29:16,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:16,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:29:16,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:29:16,746 INFO L87 Difference]: Start difference. First operand 77081 states and 94655 transitions. Second operand has 14 states, 14 states have (on average 20.428571428571427) internal successors, (286), 14 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:17,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:17,404 INFO L93 Difference]: Finished difference Result 173057 states and 211454 transitions. [2024-12-02 15:29:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:29:17,404 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.428571428571427) internal successors, (286), 14 states have internal predecessors, (286), 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 104 [2024-12-02 15:29:17,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:17,497 INFO L225 Difference]: With dead ends: 173057 [2024-12-02 15:29:17,497 INFO L226 Difference]: Without dead ends: 97577 [2024-12-02 15:29:17,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:29:17,696 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 1236 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:17,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 804 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:29:17,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97577 states. [2024-12-02 15:29:18,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97577 to 84578. [2024-12-02 15:29:18,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84578 states, 84577 states have (on average 1.2234058904903224) internal successors, (103472), 84577 states have internal predecessors, (103472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84578 states to 84578 states and 103472 transitions. [2024-12-02 15:29:18,425 INFO L78 Accepts]: Start accepts. Automaton has 84578 states and 103472 transitions. Word has length 104 [2024-12-02 15:29:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:18,426 INFO L471 AbstractCegarLoop]: Abstraction has 84578 states and 103472 transitions. [2024-12-02 15:29:18,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.428571428571427) internal successors, (286), 14 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 84578 states and 103472 transitions. [2024-12-02 15:29:18,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 15:29:18,434 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:18,434 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:18,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 15:29:18,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 15:29:18,634 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:18,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:18,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1136486780, now seen corresponding path program 1 times [2024-12-02 15:29:18,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:18,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027303263] [2024-12-02 15:29:18,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:18,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:18,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:18,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:18,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027303263] [2024-12-02 15:29:18,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027303263] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:18,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:29:18,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:29:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339180285] [2024-12-02 15:29:18,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:18,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:29:18,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:18,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:29:18,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:29:18,667 INFO L87 Difference]: Start difference. First operand 84578 states and 103472 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:18,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:18,911 INFO L93 Difference]: Finished difference Result 157569 states and 192787 transitions. [2024-12-02 15:29:18,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:29:18,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2024-12-02 15:29:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:19,009 INFO L225 Difference]: With dead ends: 157569 [2024-12-02 15:29:19,009 INFO L226 Difference]: Without dead ends: 120091 [2024-12-02 15:29:19,039 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 [2024-12-02 15:29:19,039 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 93 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:19,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 428 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:29:19,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120091 states. [2024-12-02 15:29:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120091 to 83742. [2024-12-02 15:29:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83742 states, 83741 states have (on average 1.2152231284555952) internal successors, (101764), 83741 states have internal predecessors, (101764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83742 states to 83742 states and 101764 transitions. [2024-12-02 15:29:20,299 INFO L78 Accepts]: Start accepts. Automaton has 83742 states and 101764 transitions. Word has length 106 [2024-12-02 15:29:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:20,299 INFO L471 AbstractCegarLoop]: Abstraction has 83742 states and 101764 transitions. [2024-12-02 15:29:20,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 83742 states and 101764 transitions. [2024-12-02 15:29:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 15:29:20,308 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:20,308 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:20,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 15:29:20,308 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:20,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:20,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1155971345, now seen corresponding path program 1 times [2024-12-02 15:29:20,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:20,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474956367] [2024-12-02 15:29:20,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:20,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 15:29:20,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:20,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474956367] [2024-12-02 15:29:20,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474956367] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:20,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:29:20,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:29:20,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774757718] [2024-12-02 15:29:20,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:20,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:29:20,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:20,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:29:20,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:29:20,365 INFO L87 Difference]: Start difference. First operand 83742 states and 101764 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:20,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:20,787 INFO L93 Difference]: Finished difference Result 149450 states and 180887 transitions. [2024-12-02 15:29:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:29:20,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 107 [2024-12-02 15:29:20,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:20,914 INFO L225 Difference]: With dead ends: 149450 [2024-12-02 15:29:20,915 INFO L226 Difference]: Without dead ends: 120205 [2024-12-02 15:29:20,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:29:20,950 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 116 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:20,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 446 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:29:21,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120205 states. [2024-12-02 15:29:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120205 to 96463. [2024-12-02 15:29:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96463 states, 96462 states have (on average 1.215597852003898) internal successors, (117259), 96462 states have internal predecessors, (117259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:22,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96463 states to 96463 states and 117259 transitions. [2024-12-02 15:29:22,512 INFO L78 Accepts]: Start accepts. Automaton has 96463 states and 117259 transitions. Word has length 107 [2024-12-02 15:29:22,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:22,512 INFO L471 AbstractCegarLoop]: Abstraction has 96463 states and 117259 transitions. [2024-12-02 15:29:22,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 96463 states and 117259 transitions. [2024-12-02 15:29:22,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 15:29:22,519 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:22,519 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:22,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 15:29:22,519 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:22,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:22,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1792533260, now seen corresponding path program 1 times [2024-12-02 15:29:22,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:22,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464769697] [2024-12-02 15:29:22,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:22,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:23,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:23,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464769697] [2024-12-02 15:29:23,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464769697] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:29:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347933491] [2024-12-02 15:29:23,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:23,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:23,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:29:23,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:29:23,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:29:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:23,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 15:29:23,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:29:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:24,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:29:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:25,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347933491] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:29:25,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:29:25,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2024-12-02 15:29:25,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563668159] [2024-12-02 15:29:25,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:29:25,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-12-02 15:29:25,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:25,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-12-02 15:29:25,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1592, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 15:29:25,720 INFO L87 Difference]: Start difference. First operand 96463 states and 117259 transitions. Second operand has 42 states, 42 states have (on average 7.071428571428571) internal successors, (297), 42 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:41,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:41,739 INFO L93 Difference]: Finished difference Result 278374 states and 335577 transitions. [2024-12-02 15:29:41,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2024-12-02 15:29:41,740 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.071428571428571) internal successors, (297), 42 states have internal predecessors, (297), 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 107 [2024-12-02 15:29:41,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:41,964 INFO L225 Difference]: With dead ends: 278374 [2024-12-02 15:29:41,965 INFO L226 Difference]: Without dead ends: 255559 [2024-12-02 15:29:42,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16127 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=6404, Invalid=40036, Unknown=0, NotChecked=0, Total=46440 [2024-12-02 15:29:42,007 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 6895 mSDsluCounter, 6722 mSDsCounter, 0 mSdLazyCounter, 7455 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6895 SdHoareTripleChecker+Valid, 6950 SdHoareTripleChecker+Invalid, 7598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 7455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:42,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6895 Valid, 6950 Invalid, 7598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 7455 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-12-02 15:29:42,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255559 states. [2024-12-02 15:29:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255559 to 96507. [2024-12-02 15:29:43,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96507 states, 96506 states have (on average 1.2156238990321846) internal successors, (117315), 96506 states have internal predecessors, (117315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:43,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96507 states to 96507 states and 117315 transitions. [2024-12-02 15:29:43,539 INFO L78 Accepts]: Start accepts. Automaton has 96507 states and 117315 transitions. Word has length 107 [2024-12-02 15:29:43,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:43,539 INFO L471 AbstractCegarLoop]: Abstraction has 96507 states and 117315 transitions. [2024-12-02 15:29:43,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.071428571428571) internal successors, (297), 42 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:43,539 INFO L276 IsEmpty]: Start isEmpty. Operand 96507 states and 117315 transitions. [2024-12-02 15:29:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 15:29:43,544 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:43,544 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:43,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 15:29:43,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:43,745 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:43,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:43,745 INFO L85 PathProgramCache]: Analyzing trace with hash -340745030, now seen corresponding path program 1 times [2024-12-02 15:29:43,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:43,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439934152] [2024-12-02 15:29:43,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:43,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:29:43,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:43,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439934152] [2024-12-02 15:29:43,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439934152] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:43,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:29:43,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:29:43,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089841022] [2024-12-02 15:29:43,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:43,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:29:43,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:43,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:29:43,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:29:43,792 INFO L87 Difference]: Start difference. First operand 96507 states and 117315 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:44,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:44,137 INFO L93 Difference]: Finished difference Result 159061 states and 193264 transitions. [2024-12-02 15:29:44,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:29:44,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 107 [2024-12-02 15:29:44,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:44,250 INFO L225 Difference]: With dead ends: 159061 [2024-12-02 15:29:44,250 INFO L226 Difference]: Without dead ends: 129387 [2024-12-02 15:29:44,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:29:44,281 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 130 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:44,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 436 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:29:44,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129387 states. [2024-12-02 15:29:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129387 to 95463. [2024-12-02 15:29:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95463 states, 95462 states have (on average 1.2164421445182376) internal successors, (116124), 95462 states have internal predecessors, (116124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95463 states to 95463 states and 116124 transitions. [2024-12-02 15:29:45,284 INFO L78 Accepts]: Start accepts. Automaton has 95463 states and 116124 transitions. Word has length 107 [2024-12-02 15:29:45,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:45,284 INFO L471 AbstractCegarLoop]: Abstraction has 95463 states and 116124 transitions. [2024-12-02 15:29:45,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:45,284 INFO L276 IsEmpty]: Start isEmpty. Operand 95463 states and 116124 transitions. [2024-12-02 15:29:45,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 15:29:45,293 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:45,293 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:45,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 15:29:45,293 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:45,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:45,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1318476383, now seen corresponding path program 1 times [2024-12-02 15:29:45,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:45,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268570140] [2024-12-02 15:29:45,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:45,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:46,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:46,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268570140] [2024-12-02 15:29:46,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268570140] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:29:46,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255700446] [2024-12-02 15:29:46,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:46,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:46,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:29:46,245 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:29:46,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 15:29:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:46,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 15:29:46,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:29:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:47,194 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:29:47,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255700446] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:47,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:29:47,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [21] total 33 [2024-12-02 15:29:47,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83256793] [2024-12-02 15:29:47,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:47,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:29:47,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:47,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:29:47,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:29:47,196 INFO L87 Difference]: Start difference. First operand 95463 states and 116124 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:48,061 INFO L93 Difference]: Finished difference Result 122044 states and 148512 transitions. [2024-12-02 15:29:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 15:29:48,061 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 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 107 [2024-12-02 15:29:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:48,147 INFO L225 Difference]: With dead ends: 122044 [2024-12-02 15:29:48,147 INFO L226 Difference]: Without dead ends: 104319 [2024-12-02 15:29:48,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 15:29:48,168 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 827 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:48,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 2528 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:29:48,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104319 states. [2024-12-02 15:29:48,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104319 to 103443. [2024-12-02 15:29:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103443 states, 103442 states have (on average 1.2157150867152606) internal successors, (125756), 103442 states have internal predecessors, (125756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103443 states to 103443 states and 125756 transitions. [2024-12-02 15:29:48,993 INFO L78 Accepts]: Start accepts. Automaton has 103443 states and 125756 transitions. Word has length 107 [2024-12-02 15:29:48,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:48,993 INFO L471 AbstractCegarLoop]: Abstraction has 103443 states and 125756 transitions. [2024-12-02 15:29:48,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 103443 states and 125756 transitions. [2024-12-02 15:29:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 15:29:48,999 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:48,999 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:49,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 15:29:49,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:49,199 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:49,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:49,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1065392477, now seen corresponding path program 1 times [2024-12-02 15:29:49,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:49,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451829767] [2024-12-02 15:29:49,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:49,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:49,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:49,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451829767] [2024-12-02 15:29:49,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451829767] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:49,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:29:49,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 15:29:49,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662576340] [2024-12-02 15:29:49,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:49,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:29:49,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:49,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:29:49,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:29:49,730 INFO L87 Difference]: Start difference. First operand 103443 states and 125756 transitions. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 14 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:51,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:51,328 INFO L93 Difference]: Finished difference Result 182626 states and 221489 transitions. [2024-12-02 15:29:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 15:29:51,328 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 14 states have internal predecessors, (107), 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 107 [2024-12-02 15:29:51,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:51,629 INFO L225 Difference]: With dead ends: 182626 [2024-12-02 15:29:51,629 INFO L226 Difference]: Without dead ends: 169841 [2024-12-02 15:29:51,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=372, Invalid=1608, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 15:29:51,646 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 1495 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:51,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:29:51,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169841 states. [2024-12-02 15:29:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169841 to 103309. [2024-12-02 15:29:52,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103309 states, 103308 states have (on average 1.2158109730127387) internal successors, (125603), 103308 states have internal predecessors, (125603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103309 states to 103309 states and 125603 transitions. [2024-12-02 15:29:52,665 INFO L78 Accepts]: Start accepts. Automaton has 103309 states and 125603 transitions. Word has length 107 [2024-12-02 15:29:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:52,665 INFO L471 AbstractCegarLoop]: Abstraction has 103309 states and 125603 transitions. [2024-12-02 15:29:52,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 14 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 103309 states and 125603 transitions. [2024-12-02 15:29:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 15:29:52,670 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:52,671 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:52,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-12-02 15:29:52,671 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:52,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:52,672 INFO L85 PathProgramCache]: Analyzing trace with hash 395012411, now seen corresponding path program 1 times [2024-12-02 15:29:52,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:52,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295610914] [2024-12-02 15:29:52,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:52,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:52,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:52,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295610914] [2024-12-02 15:29:52,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295610914] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:52,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:29:52,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:29:52,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798570074] [2024-12-02 15:29:52,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:52,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:29:52,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:52,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:29:52,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:29:52,708 INFO L87 Difference]: Start difference. First operand 103309 states and 125603 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:52,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:52,966 INFO L93 Difference]: Finished difference Result 159749 states and 194006 transitions. [2024-12-02 15:29:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:29:52,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2024-12-02 15:29:52,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:53,060 INFO L225 Difference]: With dead ends: 159749 [2024-12-02 15:29:53,060 INFO L226 Difference]: Without dead ends: 117987 [2024-12-02 15:29:53,087 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 [2024-12-02 15:29:53,088 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 76 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:53,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 432 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:29:53,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117987 states. [2024-12-02 15:29:54,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117987 to 97462. [2024-12-02 15:29:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97462 states, 97461 states have (on average 1.2114179004935308) internal successors, (118066), 97461 states have internal predecessors, (118066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97462 states to 97462 states and 118066 transitions. [2024-12-02 15:29:54,292 INFO L78 Accepts]: Start accepts. Automaton has 97462 states and 118066 transitions. Word has length 108 [2024-12-02 15:29:54,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:54,292 INFO L471 AbstractCegarLoop]: Abstraction has 97462 states and 118066 transitions. [2024-12-02 15:29:54,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 97462 states and 118066 transitions. [2024-12-02 15:29:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 15:29:54,301 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:54,302 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:29:54,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-12-02 15:29:54,302 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:54,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:54,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1772214580, now seen corresponding path program 1 times [2024-12-02 15:29:54,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:54,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000609608] [2024-12-02 15:29:54,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:54,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:54,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:54,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000609608] [2024-12-02 15:29:54,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000609608] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:29:54,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175829869] [2024-12-02 15:29:54,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:54,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:54,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:29:54,793 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:29:54,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 15:29:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:54,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 15:29:54,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:29:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:56,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:29:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:56,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175829869] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:29:56,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:29:56,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 38 [2024-12-02 15:29:56,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063605061] [2024-12-02 15:29:56,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:29:56,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 15:29:56,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:56,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 15:29:56,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1276, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 15:29:56,871 INFO L87 Difference]: Start difference. First operand 97462 states and 118066 transitions. Second operand has 38 states, 38 states have (on average 7.131578947368421) internal successors, (271), 38 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:29:58,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:58,994 INFO L93 Difference]: Finished difference Result 185168 states and 224111 transitions. [2024-12-02 15:29:58,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 15:29:58,994 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.131578947368421) internal successors, (271), 38 states have internal predecessors, (271), 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 108 [2024-12-02 15:29:58,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:59,128 INFO L225 Difference]: With dead ends: 185168 [2024-12-02 15:29:59,128 INFO L226 Difference]: Without dead ends: 168613 [2024-12-02 15:29:59,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=571, Invalid=2969, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 15:29:59,151 INFO L435 NwaCegarLoop]: 332 mSDtfsCounter, 2009 mSDsluCounter, 6556 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 6888 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:59,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2009 Valid, 6888 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:29:59,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168613 states. [2024-12-02 15:30:00,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168613 to 97447. [2024-12-02 15:30:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97447 states, 97446 states have (on average 1.2112862508466227) internal successors, (118035), 97446 states have internal predecessors, (118035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:00,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97447 states to 97447 states and 118035 transitions. [2024-12-02 15:30:00,390 INFO L78 Accepts]: Start accepts. Automaton has 97447 states and 118035 transitions. Word has length 108 [2024-12-02 15:30:00,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:00,390 INFO L471 AbstractCegarLoop]: Abstraction has 97447 states and 118035 transitions. [2024-12-02 15:30:00,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.131578947368421) internal successors, (271), 38 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:00,390 INFO L276 IsEmpty]: Start isEmpty. Operand 97447 states and 118035 transitions. [2024-12-02 15:30:00,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 15:30:00,395 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:00,395 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:00,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 15:30:00,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:30:00,596 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:00,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:00,597 INFO L85 PathProgramCache]: Analyzing trace with hash -937858265, now seen corresponding path program 1 times [2024-12-02 15:30:00,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:00,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989632159] [2024-12-02 15:30:00,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:00,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:00,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:00,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989632159] [2024-12-02 15:30:00,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989632159] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:30:00,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680949404] [2024-12-02 15:30:00,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:00,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:30:00,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:30:00,983 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:30:00,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 15:30:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:01,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 15:30:01,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:30:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:02,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:30:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:02,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680949404] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:30:02,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:30:02,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 12] total 36 [2024-12-02 15:30:02,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560435586] [2024-12-02 15:30:02,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:30:02,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 15:30:02,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:02,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 15:30:02,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 15:30:02,970 INFO L87 Difference]: Start difference. First operand 97447 states and 118035 transitions. Second operand has 36 states, 36 states have (on average 7.472222222222222) internal successors, (269), 36 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:04,496 INFO L93 Difference]: Finished difference Result 179584 states and 217419 transitions. [2024-12-02 15:30:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 15:30:04,497 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.472222222222222) internal successors, (269), 36 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-12-02 15:30:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:04,603 INFO L225 Difference]: With dead ends: 179584 [2024-12-02 15:30:04,604 INFO L226 Difference]: Without dead ends: 130554 [2024-12-02 15:30:04,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=487, Invalid=2375, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 15:30:04,727 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 1092 mSDsluCounter, 5900 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 6220 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:04,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 6220 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:30:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130554 states. [2024-12-02 15:30:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130554 to 115436. [2024-12-02 15:30:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115436 states, 115435 states have (on average 1.2065144886732793) internal successors, (139274), 115435 states have internal predecessors, (139274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115436 states to 115436 states and 139274 transitions. [2024-12-02 15:30:05,901 INFO L78 Accepts]: Start accepts. Automaton has 115436 states and 139274 transitions. Word has length 108 [2024-12-02 15:30:05,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:05,901 INFO L471 AbstractCegarLoop]: Abstraction has 115436 states and 139274 transitions. [2024-12-02 15:30:05,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.472222222222222) internal successors, (269), 36 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 115436 states and 139274 transitions. [2024-12-02 15:30:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 15:30:05,906 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:05,906 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:05,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 15:30:06,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-12-02 15:30:06,107 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:06,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:06,108 INFO L85 PathProgramCache]: Analyzing trace with hash -826380895, now seen corresponding path program 1 times [2024-12-02 15:30:06,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:06,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126906194] [2024-12-02 15:30:06,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:06,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:06,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:06,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126906194] [2024-12-02 15:30:06,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126906194] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:30:06,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638031073] [2024-12-02 15:30:06,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:06,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:30:06,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:30:06,562 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:30:06,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 15:30:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:06,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 15:30:06,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:30:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:07,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:30:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:08,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638031073] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:30:08,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:30:08,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 38 [2024-12-02 15:30:08,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288835406] [2024-12-02 15:30:08,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:30:08,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 15:30:08,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:08,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 15:30:08,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 15:30:08,536 INFO L87 Difference]: Start difference. First operand 115436 states and 139274 transitions. Second operand has 38 states, 38 states have (on average 7.473684210526316) internal successors, (284), 38 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:10,977 INFO L93 Difference]: Finished difference Result 163594 states and 196704 transitions. [2024-12-02 15:30:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 15:30:10,977 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.473684210526316) internal successors, (284), 38 states have internal predecessors, (284), 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 108 [2024-12-02 15:30:10,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:11,091 INFO L225 Difference]: With dead ends: 163594 [2024-12-02 15:30:11,091 INFO L226 Difference]: Without dead ends: 126217 [2024-12-02 15:30:11,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=807, Invalid=4163, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 15:30:11,121 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 2259 mSDsluCounter, 6474 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2259 SdHoareTripleChecker+Valid, 6829 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:11,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2259 Valid, 6829 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:30:11,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126217 states. [2024-12-02 15:30:11,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126217 to 112902. [2024-12-02 15:30:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112902 states, 112901 states have (on average 1.2035322982081647) internal successors, (135880), 112901 states have internal predecessors, (135880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112902 states to 112902 states and 135880 transitions. [2024-12-02 15:30:12,120 INFO L78 Accepts]: Start accepts. Automaton has 112902 states and 135880 transitions. Word has length 108 [2024-12-02 15:30:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:12,120 INFO L471 AbstractCegarLoop]: Abstraction has 112902 states and 135880 transitions. [2024-12-02 15:30:12,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.473684210526316) internal successors, (284), 38 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:12,120 INFO L276 IsEmpty]: Start isEmpty. Operand 112902 states and 135880 transitions. [2024-12-02 15:30:12,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 15:30:12,125 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:12,125 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:12,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 15:30:12,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-02 15:30:12,326 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:12,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1068414278, now seen corresponding path program 1 times [2024-12-02 15:30:12,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:12,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552670582] [2024-12-02 15:30:12,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:12,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:12,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:12,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552670582] [2024-12-02 15:30:12,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552670582] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:30:12,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:30:12,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:30:12,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801521059] [2024-12-02 15:30:12,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:30:12,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:30:12,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:12,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:30:12,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:30:12,381 INFO L87 Difference]: Start difference. First operand 112902 states and 135880 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:12,868 INFO L93 Difference]: Finished difference Result 212117 states and 254581 transitions. [2024-12-02 15:30:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:30:12,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2024-12-02 15:30:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:12,955 INFO L225 Difference]: With dead ends: 212117 [2024-12-02 15:30:12,955 INFO L226 Difference]: Without dead ends: 100429 [2024-12-02 15:30:12,994 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 [2024-12-02 15:30:12,994 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 74 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:12,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 326 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:30:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100429 states. [2024-12-02 15:30:13,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100429 to 100427. [2024-12-02 15:30:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100427 states, 100426 states have (on average 1.1711210244359032) internal successors, (117611), 100426 states have internal predecessors, (117611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100427 states to 100427 states and 117611 transitions. [2024-12-02 15:30:14,061 INFO L78 Accepts]: Start accepts. Automaton has 100427 states and 117611 transitions. Word has length 109 [2024-12-02 15:30:14,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:14,061 INFO L471 AbstractCegarLoop]: Abstraction has 100427 states and 117611 transitions. [2024-12-02 15:30:14,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:14,061 INFO L276 IsEmpty]: Start isEmpty. Operand 100427 states and 117611 transitions. [2024-12-02 15:30:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 15:30:14,067 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:14,068 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:14,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-12-02 15:30:14,068 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:14,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2090213940, now seen corresponding path program 1 times [2024-12-02 15:30:14,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:14,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756023732] [2024-12-02 15:30:14,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:14,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:14,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:14,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756023732] [2024-12-02 15:30:14,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756023732] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:30:14,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:30:14,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 15:30:14,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964730543] [2024-12-02 15:30:14,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:30:14,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 15:30:14,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:14,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 15:30:14,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:30:14,708 INFO L87 Difference]: Start difference. First operand 100427 states and 117611 transitions. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:16,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:16,064 INFO L93 Difference]: Finished difference Result 161513 states and 189602 transitions. [2024-12-02 15:30:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:30:16,065 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 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 109 [2024-12-02 15:30:16,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:16,324 INFO L225 Difference]: With dead ends: 161513 [2024-12-02 15:30:16,324 INFO L226 Difference]: Without dead ends: 151865 [2024-12-02 15:30:16,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=359, Invalid=1621, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 15:30:16,335 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 1550 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:16,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 3181 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:30:16,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151865 states. [2024-12-02 15:30:17,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151865 to 101612. [2024-12-02 15:30:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101612 states, 101611 states have (on average 1.1703752546476267) internal successors, (118923), 101611 states have internal predecessors, (118923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101612 states to 101612 states and 118923 transitions. [2024-12-02 15:30:17,284 INFO L78 Accepts]: Start accepts. Automaton has 101612 states and 118923 transitions. Word has length 109 [2024-12-02 15:30:17,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:17,284 INFO L471 AbstractCegarLoop]: Abstraction has 101612 states and 118923 transitions. [2024-12-02 15:30:17,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 101612 states and 118923 transitions. [2024-12-02 15:30:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 15:30:17,290 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:17,290 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:17,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-12-02 15:30:17,290 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:17,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:17,291 INFO L85 PathProgramCache]: Analyzing trace with hash -943937199, now seen corresponding path program 1 times [2024-12-02 15:30:17,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:17,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273416031] [2024-12-02 15:30:17,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:17,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:17,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:17,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273416031] [2024-12-02 15:30:17,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273416031] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:30:17,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:30:17,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:30:17,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500361803] [2024-12-02 15:30:17,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:30:17,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:30:17,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:17,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:30:17,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:30:17,372 INFO L87 Difference]: Start difference. First operand 101612 states and 118923 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:17,763 INFO L93 Difference]: Finished difference Result 149266 states and 175467 transitions. [2024-12-02 15:30:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:30:17,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2024-12-02 15:30:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:17,800 INFO L225 Difference]: With dead ends: 149266 [2024-12-02 15:30:17,800 INFO L226 Difference]: Without dead ends: 48695 [2024-12-02 15:30:17,829 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 [2024-12-02 15:30:17,830 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 72 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:17,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 305 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:30:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48695 states. [2024-12-02 15:30:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48695 to 46678. [2024-12-02 15:30:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46678 states, 46677 states have (on average 1.1590504959616086) internal successors, (54101), 46677 states have internal predecessors, (54101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46678 states to 46678 states and 54101 transitions. [2024-12-02 15:30:18,325 INFO L78 Accepts]: Start accepts. Automaton has 46678 states and 54101 transitions. Word has length 109 [2024-12-02 15:30:18,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:18,326 INFO L471 AbstractCegarLoop]: Abstraction has 46678 states and 54101 transitions. [2024-12-02 15:30:18,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 46678 states and 54101 transitions. [2024-12-02 15:30:18,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 15:30:18,330 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:18,330 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:18,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-12-02 15:30:18,330 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:18,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:18,330 INFO L85 PathProgramCache]: Analyzing trace with hash -249729600, now seen corresponding path program 1 times [2024-12-02 15:30:18,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:18,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036299209] [2024-12-02 15:30:18,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:18,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:19,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:19,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036299209] [2024-12-02 15:30:19,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036299209] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:30:19,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760835964] [2024-12-02 15:30:19,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:19,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:30:19,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:30:19,199 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:30:19,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 15:30:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:19,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 15:30:19,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:30:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:30:22,069 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:30:22,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760835964] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:30:22,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:30:22,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [16] total 36 [2024-12-02 15:30:22,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392753886] [2024-12-02 15:30:22,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:30:22,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 15:30:22,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:22,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 15:30:22,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 15:30:22,070 INFO L87 Difference]: Start difference. First operand 46678 states and 54101 transitions. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:23,516 INFO L93 Difference]: Finished difference Result 71015 states and 82575 transitions. [2024-12-02 15:30:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 15:30:23,517 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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 111 [2024-12-02 15:30:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:23,564 INFO L225 Difference]: With dead ends: 71015 [2024-12-02 15:30:23,564 INFO L226 Difference]: Without dead ends: 68851 [2024-12-02 15:30:23,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=243, Invalid=1827, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 15:30:23,577 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 793 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:23,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 2132 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:30:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68851 states. [2024-12-02 15:30:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68851 to 46628. [2024-12-02 15:30:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46628 states, 46627 states have (on average 1.1591567117764385) internal successors, (54048), 46627 states have internal predecessors, (54048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46628 states to 46628 states and 54048 transitions. [2024-12-02 15:30:24,145 INFO L78 Accepts]: Start accepts. Automaton has 46628 states and 54048 transitions. Word has length 111 [2024-12-02 15:30:24,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:24,145 INFO L471 AbstractCegarLoop]: Abstraction has 46628 states and 54048 transitions. [2024-12-02 15:30:24,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 46628 states and 54048 transitions. [2024-12-02 15:30:24,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 15:30:24,150 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:24,150 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:24,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 15:30:24,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-12-02 15:30:24,351 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:24,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:24,352 INFO L85 PathProgramCache]: Analyzing trace with hash -51316262, now seen corresponding path program 1 times [2024-12-02 15:30:24,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:24,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41657527] [2024-12-02 15:30:24,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:24,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:24,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:24,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41657527] [2024-12-02 15:30:24,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41657527] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:30:24,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49346816] [2024-12-02 15:30:24,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:24,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:30:24,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:30:24,906 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:30:24,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 15:30:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:25,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 15:30:25,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:30:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:25,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:30:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:26,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49346816] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:30:26,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:30:26,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2024-12-02 15:30:26,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163710660] [2024-12-02 15:30:26,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:30:26,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 15:30:26,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:26,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 15:30:26,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2024-12-02 15:30:26,545 INFO L87 Difference]: Start difference. First operand 46628 states and 54048 transitions. Second operand has 29 states, 29 states have (on average 9.379310344827585) internal successors, (272), 28 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:27,322 INFO L93 Difference]: Finished difference Result 74161 states and 86168 transitions. [2024-12-02 15:30:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 15:30:27,322 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.379310344827585) internal successors, (272), 28 states have internal predecessors, (272), 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 111 [2024-12-02 15:30:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:27,364 INFO L225 Difference]: With dead ends: 74161 [2024-12-02 15:30:27,364 INFO L226 Difference]: Without dead ends: 59507 [2024-12-02 15:30:27,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=384, Invalid=1422, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 15:30:27,379 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 808 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:27,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 1231 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:30:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59507 states. [2024-12-02 15:30:27,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59507 to 46875. [2024-12-02 15:30:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46875 states, 46874 states have (on average 1.1585527157912703) internal successors, (54306), 46874 states have internal predecessors, (54306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46875 states to 46875 states and 54306 transitions. [2024-12-02 15:30:27,811 INFO L78 Accepts]: Start accepts. Automaton has 46875 states and 54306 transitions. Word has length 111 [2024-12-02 15:30:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:27,811 INFO L471 AbstractCegarLoop]: Abstraction has 46875 states and 54306 transitions. [2024-12-02 15:30:27,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.379310344827585) internal successors, (272), 28 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:27,811 INFO L276 IsEmpty]: Start isEmpty. Operand 46875 states and 54306 transitions. [2024-12-02 15:30:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 15:30:27,813 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:27,814 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:27,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 15:30:28,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-12-02 15:30:28,015 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:28,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1874289520, now seen corresponding path program 1 times [2024-12-02 15:30:28,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:28,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074060759] [2024-12-02 15:30:28,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:28,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:28,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:28,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074060759] [2024-12-02 15:30:28,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074060759] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:30:28,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:30:28,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:30:28,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318528368] [2024-12-02 15:30:28,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:30:28,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:30:28,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:28,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:30:28,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:30:28,076 INFO L87 Difference]: Start difference. First operand 46875 states and 54306 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:28,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:28,169 INFO L93 Difference]: Finished difference Result 63744 states and 74016 transitions. [2024-12-02 15:30:28,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:30:28,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 112 [2024-12-02 15:30:28,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:28,182 INFO L225 Difference]: With dead ends: 63744 [2024-12-02 15:30:28,183 INFO L226 Difference]: Without dead ends: 18100 [2024-12-02 15:30:28,196 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 [2024-12-02 15:30:28,196 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 62 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:28,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 289 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:30:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18100 states. [2024-12-02 15:30:28,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18100 to 18098. [2024-12-02 15:30:28,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18098 states, 18097 states have (on average 1.1414599104824004) internal successors, (20657), 18097 states have internal predecessors, (20657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18098 states to 18098 states and 20657 transitions. [2024-12-02 15:30:28,317 INFO L78 Accepts]: Start accepts. Automaton has 18098 states and 20657 transitions. Word has length 112 [2024-12-02 15:30:28,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:28,317 INFO L471 AbstractCegarLoop]: Abstraction has 18098 states and 20657 transitions. [2024-12-02 15:30:28,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 18098 states and 20657 transitions. [2024-12-02 15:30:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 15:30:28,319 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:28,319 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:28,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-12-02 15:30:28,320 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:28,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1504641210, now seen corresponding path program 1 times [2024-12-02 15:30:28,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:28,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823080707] [2024-12-02 15:30:28,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:28,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:28,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:28,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823080707] [2024-12-02 15:30:28,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823080707] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:30:28,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222023382] [2024-12-02 15:30:28,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:28,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:30:28,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:30:28,902 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:30:28,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 15:30:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:29,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 15:30:29,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:30:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:30:32,601 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:30:32,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222023382] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:30:32,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:30:32,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [20] total 38 [2024-12-02 15:30:32,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684970140] [2024-12-02 15:30:32,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:30:32,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 15:30:32,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:32,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 15:30:32,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 15:30:32,602 INFO L87 Difference]: Start difference. First operand 18098 states and 20657 transitions. Second operand has 20 states, 20 states have (on average 5.4) internal successors, (108), 20 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:35,175 INFO L93 Difference]: Finished difference Result 28451 states and 32600 transitions. [2024-12-02 15:30:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 15:30:35,176 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.4) internal successors, (108), 20 states have internal predecessors, (108), 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 113 [2024-12-02 15:30:35,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:35,195 INFO L225 Difference]: With dead ends: 28451 [2024-12-02 15:30:35,195 INFO L226 Difference]: Without dead ends: 27147 [2024-12-02 15:30:35,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=334, Invalid=2528, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 15:30:35,200 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 1284 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:35,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 2544 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 15:30:35,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2024-12-02 15:30:35,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 17976. [2024-12-02 15:30:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17976 states, 17975 states have (on average 1.1416968011126565) internal successors, (20522), 17975 states have internal predecessors, (20522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:35,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17976 states to 17976 states and 20522 transitions. [2024-12-02 15:30:35,359 INFO L78 Accepts]: Start accepts. Automaton has 17976 states and 20522 transitions. Word has length 113 [2024-12-02 15:30:35,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:35,360 INFO L471 AbstractCegarLoop]: Abstraction has 17976 states and 20522 transitions. [2024-12-02 15:30:35,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.4) internal successors, (108), 20 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:35,360 INFO L276 IsEmpty]: Start isEmpty. Operand 17976 states and 20522 transitions. [2024-12-02 15:30:35,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 15:30:35,362 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:35,363 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:35,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 15:30:35,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-12-02 15:30:35,563 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:35,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:35,563 INFO L85 PathProgramCache]: Analyzing trace with hash 261725668, now seen corresponding path program 1 times [2024-12-02 15:30:35,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:35,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381113904] [2024-12-02 15:30:35,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:35,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:36,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:36,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381113904] [2024-12-02 15:30:36,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381113904] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:30:36,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791334088] [2024-12-02 15:30:36,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:36,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:30:36,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:30:36,608 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:30:36,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 15:30:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:36,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 15:30:36,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:30:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:39,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:30:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:41,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791334088] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:30:41,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:30:41,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 56 [2024-12-02 15:30:41,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694566792] [2024-12-02 15:30:41,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:30:41,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-12-02 15:30:41,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:41,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-12-02 15:30:41,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2912, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 15:30:41,809 INFO L87 Difference]: Start difference. First operand 17976 states and 20522 transitions. Second operand has 56 states, 56 states have (on average 5.589285714285714) internal successors, (313), 56 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:50,658 INFO L93 Difference]: Finished difference Result 29988 states and 34380 transitions. [2024-12-02 15:30:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-12-02 15:30:50,659 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.589285714285714) internal successors, (313), 56 states have internal predecessors, (313), 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 113 [2024-12-02 15:30:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:50,681 INFO L225 Difference]: With dead ends: 29988 [2024-12-02 15:30:50,681 INFO L226 Difference]: Without dead ends: 27235 [2024-12-02 15:30:50,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2322 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1372, Invalid=12200, Unknown=0, NotChecked=0, Total=13572 [2024-12-02 15:30:50,687 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 2970 mSDsluCounter, 8670 mSDsCounter, 0 mSdLazyCounter, 5162 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2970 SdHoareTripleChecker+Valid, 8935 SdHoareTripleChecker+Invalid, 5201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 5162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:50,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2970 Valid, 8935 Invalid, 5201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 5162 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 15:30:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27235 states. [2024-12-02 15:30:50,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27235 to 17519. [2024-12-02 15:30:50,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17519 states, 17518 states have (on average 1.1412832515127298) internal successors, (19993), 17518 states have internal predecessors, (19993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17519 states to 17519 states and 19993 transitions. [2024-12-02 15:30:50,914 INFO L78 Accepts]: Start accepts. Automaton has 17519 states and 19993 transitions. Word has length 113 [2024-12-02 15:30:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:50,915 INFO L471 AbstractCegarLoop]: Abstraction has 17519 states and 19993 transitions. [2024-12-02 15:30:50,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.589285714285714) internal successors, (313), 56 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:50,915 INFO L276 IsEmpty]: Start isEmpty. Operand 17519 states and 19993 transitions. [2024-12-02 15:30:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 15:30:50,917 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:50,918 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:50,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 15:30:51,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-12-02 15:30:51,118 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:51,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:51,118 INFO L85 PathProgramCache]: Analyzing trace with hash -494822149, now seen corresponding path program 1 times [2024-12-02 15:30:51,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:51,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461897531] [2024-12-02 15:30:51,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:51,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:51,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:51,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461897531] [2024-12-02 15:30:51,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461897531] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:30:51,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:30:51,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 15:30:51,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588502452] [2024-12-02 15:30:51,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:30:51,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 15:30:51,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:51,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 15:30:51,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:30:51,917 INFO L87 Difference]: Start difference. First operand 17519 states and 19993 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:52,916 INFO L93 Difference]: Finished difference Result 18715 states and 21368 transitions. [2024-12-02 15:30:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 15:30:52,917 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 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 114 [2024-12-02 15:30:52,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:52,929 INFO L225 Difference]: With dead ends: 18715 [2024-12-02 15:30:52,929 INFO L226 Difference]: Without dead ends: 18079 [2024-12-02 15:30:52,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:30:52,933 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 439 mSDsluCounter, 3323 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 3575 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:52,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 3575 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:30:52,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18079 states. [2024-12-02 15:30:53,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18079 to 17472. [2024-12-02 15:30:53,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17472 states, 17471 states have (on average 1.1412626638429397) internal successors, (19939), 17471 states have internal predecessors, (19939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17472 states to 17472 states and 19939 transitions. [2024-12-02 15:30:53,069 INFO L78 Accepts]: Start accepts. Automaton has 17472 states and 19939 transitions. Word has length 114 [2024-12-02 15:30:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:53,069 INFO L471 AbstractCegarLoop]: Abstraction has 17472 states and 19939 transitions. [2024-12-02 15:30:53,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:53,069 INFO L276 IsEmpty]: Start isEmpty. Operand 17472 states and 19939 transitions. [2024-12-02 15:30:53,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 15:30:53,072 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:53,072 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:53,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-12-02 15:30:53,072 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:53,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:53,073 INFO L85 PathProgramCache]: Analyzing trace with hash -528058541, now seen corresponding path program 1 times [2024-12-02 15:30:53,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:53,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000993541] [2024-12-02 15:30:53,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:53,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:53,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:53,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000993541] [2024-12-02 15:30:53,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000993541] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:30:53,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:30:53,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-12-02 15:30:53,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801342877] [2024-12-02 15:30:53,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:30:53,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 15:30:53,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:53,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 15:30:53,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:30:53,894 INFO L87 Difference]: Start difference. First operand 17472 states and 19939 transitions. Second operand has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:55,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:55,541 INFO L93 Difference]: Finished difference Result 27382 states and 31373 transitions. [2024-12-02 15:30:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 15:30:55,541 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 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 114 [2024-12-02 15:30:55,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:55,558 INFO L225 Difference]: With dead ends: 27382 [2024-12-02 15:30:55,558 INFO L226 Difference]: Without dead ends: 26580 [2024-12-02 15:30:55,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=1565, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 15:30:55,563 INFO L435 NwaCegarLoop]: 370 mSDtfsCounter, 979 mSDsluCounter, 4946 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 5316 SdHoareTripleChecker+Invalid, 2315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:55,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 5316 Invalid, 2315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:30:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26580 states. [2024-12-02 15:30:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26580 to 16442. [2024-12-02 15:30:55,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16442 states, 16441 states have (on average 1.1405632260811387) internal successors, (18752), 16441 states have internal predecessors, (18752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16442 states to 16442 states and 18752 transitions. [2024-12-02 15:30:55,708 INFO L78 Accepts]: Start accepts. Automaton has 16442 states and 18752 transitions. Word has length 114 [2024-12-02 15:30:55,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:55,708 INFO L471 AbstractCegarLoop]: Abstraction has 16442 states and 18752 transitions. [2024-12-02 15:30:55,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:30:55,708 INFO L276 IsEmpty]: Start isEmpty. Operand 16442 states and 18752 transitions. [2024-12-02 15:30:55,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 15:30:55,711 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:55,711 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:30:55,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-12-02 15:30:55,711 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:55,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:55,711 INFO L85 PathProgramCache]: Analyzing trace with hash 942117804, now seen corresponding path program 1 times [2024-12-02 15:30:55,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:55,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999894399] [2024-12-02 15:30:55,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:55,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 27 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 15:30:55,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:55,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999894399] [2024-12-02 15:30:55,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999894399] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:30:55,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628427286] [2024-12-02 15:30:55,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:55,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:30:55,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:30:55,968 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:30:55,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 15:30:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:56,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 15:30:56,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:30:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 27 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:57,254 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:30:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 27 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:30:58,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628427286] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:30:58,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:30:58,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 14] total 30 [2024-12-02 15:30:58,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636031735] [2024-12-02 15:30:58,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:30:58,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 15:30:58,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:58,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 15:30:58,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:30:58,987 INFO L87 Difference]: Start difference. First operand 16442 states and 18752 transitions. Second operand has 31 states, 31 states have (on average 11.387096774193548) internal successors, (353), 30 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:07,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:07,455 INFO L93 Difference]: Finished difference Result 54411 states and 62304 transitions. [2024-12-02 15:31:07,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-12-02 15:31:07,456 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 11.387096774193548) internal successors, (353), 30 states have internal predecessors, (353), 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 136 [2024-12-02 15:31:07,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:07,486 INFO L225 Difference]: With dead ends: 54411 [2024-12-02 15:31:07,487 INFO L226 Difference]: Without dead ends: 47028 [2024-12-02 15:31:07,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7893 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=3533, Invalid=20029, Unknown=0, NotChecked=0, Total=23562 [2024-12-02 15:31:07,498 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 4016 mSDsluCounter, 5581 mSDsCounter, 0 mSdLazyCounter, 5426 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4016 SdHoareTripleChecker+Valid, 5927 SdHoareTripleChecker+Invalid, 5507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 5426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:07,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4016 Valid, 5927 Invalid, 5507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 5426 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 15:31:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47028 states. [2024-12-02 15:31:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47028 to 24972. [2024-12-02 15:31:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24972 states, 24971 states have (on average 1.1427656081054023) internal successors, (28536), 24971 states have internal predecessors, (28536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:07,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24972 states to 24972 states and 28536 transitions. [2024-12-02 15:31:07,741 INFO L78 Accepts]: Start accepts. Automaton has 24972 states and 28536 transitions. Word has length 136 [2024-12-02 15:31:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:07,741 INFO L471 AbstractCegarLoop]: Abstraction has 24972 states and 28536 transitions. [2024-12-02 15:31:07,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.387096774193548) internal successors, (353), 30 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:07,741 INFO L276 IsEmpty]: Start isEmpty. Operand 24972 states and 28536 transitions. [2024-12-02 15:31:07,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 15:31:07,744 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:07,744 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:07,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 15:31:07,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-12-02 15:31:07,944 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:07,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:07,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1665792782, now seen corresponding path program 1 times [2024-12-02 15:31:07,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:07,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906000613] [2024-12-02 15:31:07,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:07,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 15:31:08,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:08,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906000613] [2024-12-02 15:31:08,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906000613] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:31:08,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:31:08,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 15:31:08,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190112718] [2024-12-02 15:31:08,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:31:08,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:31:08,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:08,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:31:08,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:31:08,308 INFO L87 Difference]: Start difference. First operand 24972 states and 28536 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:08,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:08,983 INFO L93 Difference]: Finished difference Result 36551 states and 41937 transitions. [2024-12-02 15:31:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 15:31:08,984 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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 137 [2024-12-02 15:31:08,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:09,000 INFO L225 Difference]: With dead ends: 36551 [2024-12-02 15:31:09,001 INFO L226 Difference]: Without dead ends: 26176 [2024-12-02 15:31:09,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2024-12-02 15:31:09,008 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 1100 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:09,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 2300 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:31:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26176 states. [2024-12-02 15:31:09,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26176 to 23352. [2024-12-02 15:31:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23352 states, 23351 states have (on average 1.1387949124234509) internal successors, (26592), 23351 states have internal predecessors, (26592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23352 states to 23352 states and 26592 transitions. [2024-12-02 15:31:09,167 INFO L78 Accepts]: Start accepts. Automaton has 23352 states and 26592 transitions. Word has length 137 [2024-12-02 15:31:09,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:09,168 INFO L471 AbstractCegarLoop]: Abstraction has 23352 states and 26592 transitions. [2024-12-02 15:31:09,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:09,168 INFO L276 IsEmpty]: Start isEmpty. Operand 23352 states and 26592 transitions. [2024-12-02 15:31:09,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 15:31:09,170 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:09,170 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:09,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-12-02 15:31:09,171 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:09,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:09,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1882769558, now seen corresponding path program 1 times [2024-12-02 15:31:09,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:09,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028573546] [2024-12-02 15:31:09,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:09,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 15:31:09,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:09,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028573546] [2024-12-02 15:31:09,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028573546] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:31:09,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:31:09,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 15:31:09,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638943768] [2024-12-02 15:31:09,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:31:09,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:31:09,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:09,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:31:09,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:31:09,527 INFO L87 Difference]: Start difference. First operand 23352 states and 26592 transitions. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:10,101 INFO L93 Difference]: Finished difference Result 31937 states and 36447 transitions. [2024-12-02 15:31:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 15:31:10,101 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 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 137 [2024-12-02 15:31:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:10,119 INFO L225 Difference]: With dead ends: 31937 [2024-12-02 15:31:10,119 INFO L226 Difference]: Without dead ends: 26402 [2024-12-02 15:31:10,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:31:10,125 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 903 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:10,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 2347 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:31:10,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26402 states. [2024-12-02 15:31:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26402 to 23308. [2024-12-02 15:31:10,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23308 states, 23307 states have (on average 1.1388853134251513) internal successors, (26544), 23307 states have internal predecessors, (26544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23308 states to 23308 states and 26544 transitions. [2024-12-02 15:31:10,292 INFO L78 Accepts]: Start accepts. Automaton has 23308 states and 26544 transitions. Word has length 137 [2024-12-02 15:31:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:10,292 INFO L471 AbstractCegarLoop]: Abstraction has 23308 states and 26544 transitions. [2024-12-02 15:31:10,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 23308 states and 26544 transitions. [2024-12-02 15:31:10,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 15:31:10,295 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:10,295 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:10,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-12-02 15:31:10,295 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:10,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:10,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1290525392, now seen corresponding path program 1 times [2024-12-02 15:31:10,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:10,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252690256] [2024-12-02 15:31:10,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:10,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-12-02 15:31:10,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:10,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252690256] [2024-12-02 15:31:10,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252690256] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:31:10,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:31:10,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 15:31:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344598337] [2024-12-02 15:31:10,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:31:10,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:31:10,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:10,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:31:10,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:31:10,725 INFO L87 Difference]: Start difference. First operand 23308 states and 26544 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:11,484 INFO L93 Difference]: Finished difference Result 29910 states and 34083 transitions. [2024-12-02 15:31:11,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 15:31:11,485 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 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 137 [2024-12-02 15:31:11,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:11,501 INFO L225 Difference]: With dead ends: 29910 [2024-12-02 15:31:11,501 INFO L226 Difference]: Without dead ends: 25166 [2024-12-02 15:31:11,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2024-12-02 15:31:11,507 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 1881 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:11,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 2400 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:31:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25166 states. [2024-12-02 15:31:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25166 to 23189. [2024-12-02 15:31:11,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23189 states, 23188 states have (on average 1.139382439192686) internal successors, (26420), 23188 states have internal predecessors, (26420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23189 states to 23189 states and 26420 transitions. [2024-12-02 15:31:11,688 INFO L78 Accepts]: Start accepts. Automaton has 23189 states and 26420 transitions. Word has length 137 [2024-12-02 15:31:11,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:11,689 INFO L471 AbstractCegarLoop]: Abstraction has 23189 states and 26420 transitions. [2024-12-02 15:31:11,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand 23189 states and 26420 transitions. [2024-12-02 15:31:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 15:31:11,691 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:11,691 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:11,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-12-02 15:31:11,692 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:11,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash 358147688, now seen corresponding path program 1 times [2024-12-02 15:31:11,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:11,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40054522] [2024-12-02 15:31:11,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:11,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 15:31:12,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:12,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40054522] [2024-12-02 15:31:12,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40054522] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:31:12,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885810836] [2024-12-02 15:31:12,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:12,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:31:12,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:31:12,145 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:31:12,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 15:31:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:12,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 15:31:12,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:31:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 53 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:31:14,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:31:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 53 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:31:14,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885810836] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:31:14,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:31:14,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 13] total 40 [2024-12-02 15:31:14,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966479070] [2024-12-02 15:31:14,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:31:14,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 15:31:14,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:14,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 15:31:14,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 15:31:14,953 INFO L87 Difference]: Start difference. First operand 23189 states and 26420 transitions. Second operand has 40 states, 40 states have (on average 8.45) internal successors, (338), 40 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:25,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:25,317 INFO L93 Difference]: Finished difference Result 38871 states and 44283 transitions. [2024-12-02 15:31:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-12-02 15:31:25,317 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 8.45) internal successors, (338), 40 states have internal predecessors, (338), 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 140 [2024-12-02 15:31:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:25,338 INFO L225 Difference]: With dead ends: 38871 [2024-12-02 15:31:25,338 INFO L226 Difference]: Without dead ends: 32481 [2024-12-02 15:31:25,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6978 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2980, Invalid=19370, Unknown=0, NotChecked=0, Total=22350 [2024-12-02 15:31:25,344 INFO L435 NwaCegarLoop]: 300 mSDtfsCounter, 7916 mSDsluCounter, 8059 mSDsCounter, 0 mSdLazyCounter, 8061 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7916 SdHoareTripleChecker+Valid, 8359 SdHoareTripleChecker+Invalid, 8205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 8061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:25,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7916 Valid, 8359 Invalid, 8205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 8061 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 15:31:25,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32481 states. [2024-12-02 15:31:25,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32481 to 23478. [2024-12-02 15:31:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23478 states, 23477 states have (on average 1.1380074115091365) internal successors, (26717), 23477 states have internal predecessors, (26717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23478 states to 23478 states and 26717 transitions. [2024-12-02 15:31:25,537 INFO L78 Accepts]: Start accepts. Automaton has 23478 states and 26717 transitions. Word has length 140 [2024-12-02 15:31:25,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:25,537 INFO L471 AbstractCegarLoop]: Abstraction has 23478 states and 26717 transitions. [2024-12-02 15:31:25,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 8.45) internal successors, (338), 40 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 23478 states and 26717 transitions. [2024-12-02 15:31:25,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 15:31:25,541 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:25,541 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:25,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 15:31:25,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:31:25,741 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:25,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:25,742 INFO L85 PathProgramCache]: Analyzing trace with hash 883628787, now seen corresponding path program 1 times [2024-12-02 15:31:25,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:25,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077870971] [2024-12-02 15:31:25,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:25,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 15:31:26,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:26,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077870971] [2024-12-02 15:31:26,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077870971] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:31:26,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:31:26,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 15:31:26,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385013989] [2024-12-02 15:31:26,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:31:26,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:31:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:26,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:31:26,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:31:26,120 INFO L87 Difference]: Start difference. First operand 23478 states and 26717 transitions. Second operand has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 14 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:27,117 INFO L93 Difference]: Finished difference Result 34480 states and 39339 transitions. [2024-12-02 15:31:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 15:31:27,118 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 14 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-12-02 15:31:27,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:27,136 INFO L225 Difference]: With dead ends: 34480 [2024-12-02 15:31:27,136 INFO L226 Difference]: Without dead ends: 28989 [2024-12-02 15:31:27,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=1232, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 15:31:27,141 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 1034 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:27,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 1750 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:31:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28989 states. [2024-12-02 15:31:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28989 to 23431. [2024-12-02 15:31:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23431 states, 23430 states have (on average 1.137985488689714) internal successors, (26663), 23430 states have internal predecessors, (26663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:27,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23431 states to 23431 states and 26663 transitions. [2024-12-02 15:31:27,323 INFO L78 Accepts]: Start accepts. Automaton has 23431 states and 26663 transitions. Word has length 140 [2024-12-02 15:31:27,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:27,323 INFO L471 AbstractCegarLoop]: Abstraction has 23431 states and 26663 transitions. [2024-12-02 15:31:27,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 14 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 23431 states and 26663 transitions. [2024-12-02 15:31:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 15:31:27,326 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:27,326 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:27,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-12-02 15:31:27,326 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:27,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:27,327 INFO L85 PathProgramCache]: Analyzing trace with hash -198264387, now seen corresponding path program 1 times [2024-12-02 15:31:27,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:27,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284579913] [2024-12-02 15:31:27,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:27,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 15:31:27,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:27,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284579913] [2024-12-02 15:31:27,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284579913] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:31:27,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631201461] [2024-12-02 15:31:27,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:27,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:31:27,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:31:27,737 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:31:27,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 15:31:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:27,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 15:31:27,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:31:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 59 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:31:29,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:31:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 59 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:31:30,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631201461] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:31:30,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:31:30,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 39 [2024-12-02 15:31:30,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827670107] [2024-12-02 15:31:30,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:31:30,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 15:31:30,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:30,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 15:31:30,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1358, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 15:31:30,198 INFO L87 Difference]: Start difference. First operand 23431 states and 26663 transitions. Second operand has 39 states, 39 states have (on average 8.205128205128204) internal successors, (320), 39 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:40,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:40,029 INFO L93 Difference]: Finished difference Result 37900 states and 43357 transitions. [2024-12-02 15:31:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-12-02 15:31:40,030 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 8.205128205128204) internal successors, (320), 39 states have internal predecessors, (320), 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 140 [2024-12-02 15:31:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:40,048 INFO L225 Difference]: With dead ends: 37900 [2024-12-02 15:31:40,048 INFO L226 Difference]: Without dead ends: 33075 [2024-12-02 15:31:40,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4039 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=2567, Invalid=12933, Unknown=0, NotChecked=0, Total=15500 [2024-12-02 15:31:40,053 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 3978 mSDsluCounter, 5559 mSDsCounter, 0 mSdLazyCounter, 5997 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3978 SdHoareTripleChecker+Valid, 5778 SdHoareTripleChecker+Invalid, 6091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 5997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:40,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3978 Valid, 5778 Invalid, 6091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 5997 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-12-02 15:31:40,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33075 states. [2024-12-02 15:31:40,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33075 to 22708. [2024-12-02 15:31:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22708 states, 22707 states have (on average 1.1382833487470825) internal successors, (25847), 22707 states have internal predecessors, (25847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22708 states to 22708 states and 25847 transitions. [2024-12-02 15:31:40,242 INFO L78 Accepts]: Start accepts. Automaton has 22708 states and 25847 transitions. Word has length 140 [2024-12-02 15:31:40,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:40,242 INFO L471 AbstractCegarLoop]: Abstraction has 22708 states and 25847 transitions. [2024-12-02 15:31:40,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.205128205128204) internal successors, (320), 39 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:40,242 INFO L276 IsEmpty]: Start isEmpty. Operand 22708 states and 25847 transitions. [2024-12-02 15:31:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 15:31:40,244 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:40,244 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:40,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 15:31:40,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-12-02 15:31:40,445 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:40,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:40,445 INFO L85 PathProgramCache]: Analyzing trace with hash 441484875, now seen corresponding path program 1 times [2024-12-02 15:31:40,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:40,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10504785] [2024-12-02 15:31:40,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:40,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 59 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:31:41,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:41,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10504785] [2024-12-02 15:31:41,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10504785] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:31:41,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936686772] [2024-12-02 15:31:41,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:41,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:31:41,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:31:41,234 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:31:41,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 15:31:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:41,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 15:31:41,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:31:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 53 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 15:31:43,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:31:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 48 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 15:31:44,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936686772] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:31:44,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:31:44,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 13] total 42 [2024-12-02 15:31:44,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141930243] [2024-12-02 15:31:44,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:31:44,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-12-02 15:31:44,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:44,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-12-02 15:31:44,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1577, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 15:31:44,025 INFO L87 Difference]: Start difference. First operand 22708 states and 25847 transitions. Second operand has 42 states, 42 states have (on average 8.238095238095237) internal successors, (346), 42 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:54,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:54,208 INFO L93 Difference]: Finished difference Result 32536 states and 37080 transitions. [2024-12-02 15:31:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-12-02 15:31:54,208 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 8.238095238095237) internal successors, (346), 42 states have internal predecessors, (346), 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 141 [2024-12-02 15:31:54,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:54,221 INFO L225 Difference]: With dead ends: 32536 [2024-12-02 15:31:54,221 INFO L226 Difference]: Without dead ends: 27092 [2024-12-02 15:31:54,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3874 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=2014, Invalid=12992, Unknown=0, NotChecked=0, Total=15006 [2024-12-02 15:31:54,225 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 3166 mSDsluCounter, 10956 mSDsCounter, 0 mSdLazyCounter, 5704 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3166 SdHoareTripleChecker+Valid, 11379 SdHoareTripleChecker+Invalid, 5765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 5704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:54,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3166 Valid, 11379 Invalid, 5765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 5704 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 15:31:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27092 states. [2024-12-02 15:31:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27092 to 23770. [2024-12-02 15:31:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23770 states, 23769 states have (on average 1.1390887290167866) internal successors, (27075), 23769 states have internal predecessors, (27075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23770 states to 23770 states and 27075 transitions. [2024-12-02 15:31:54,415 INFO L78 Accepts]: Start accepts. Automaton has 23770 states and 27075 transitions. Word has length 141 [2024-12-02 15:31:54,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:54,416 INFO L471 AbstractCegarLoop]: Abstraction has 23770 states and 27075 transitions. [2024-12-02 15:31:54,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 8.238095238095237) internal successors, (346), 42 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 23770 states and 27075 transitions. [2024-12-02 15:31:54,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 15:31:54,419 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:54,420 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:54,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 15:31:54,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-12-02 15:31:54,620 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:54,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:54,621 INFO L85 PathProgramCache]: Analyzing trace with hash -285321839, now seen corresponding path program 1 times [2024-12-02 15:31:54,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:54,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618953515] [2024-12-02 15:31:54,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:54,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:31:54,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:54,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618953515] [2024-12-02 15:31:54,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618953515] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:31:54,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:31:54,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:31:54,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649888219] [2024-12-02 15:31:54,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:31:54,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:31:54,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:54,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:31:54,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:31:54,671 INFO L87 Difference]: Start difference. First operand 23770 states and 27075 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:54,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:54,794 INFO L93 Difference]: Finished difference Result 29521 states and 33698 transitions. [2024-12-02 15:31:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:31:54,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 144 [2024-12-02 15:31:54,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:54,808 INFO L225 Difference]: With dead ends: 29521 [2024-12-02 15:31:54,808 INFO L226 Difference]: Without dead ends: 23722 [2024-12-02 15:31:54,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:31:54,813 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 126 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:54,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 365 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:31:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23722 states. [2024-12-02 15:31:55,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23722 to 23694. [2024-12-02 15:31:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23694 states, 23693 states have (on average 1.136327185244587) internal successors, (26923), 23693 states have internal predecessors, (26923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23694 states to 23694 states and 26923 transitions. [2024-12-02 15:31:55,029 INFO L78 Accepts]: Start accepts. Automaton has 23694 states and 26923 transitions. Word has length 144 [2024-12-02 15:31:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:55,029 INFO L471 AbstractCegarLoop]: Abstraction has 23694 states and 26923 transitions. [2024-12-02 15:31:55,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:31:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 23694 states and 26923 transitions. [2024-12-02 15:31:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 15:31:55,031 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:55,031 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:55,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-12-02 15:31:55,031 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:55,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash 793589238, now seen corresponding path program 1 times [2024-12-02 15:31:55,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:55,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277941972] [2024-12-02 15:31:55,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:55,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 27 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:31:55,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:55,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277941972] [2024-12-02 15:31:55,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277941972] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:31:55,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538075803] [2024-12-02 15:31:55,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:55,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:31:55,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:31:55,651 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:31:55,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 15:31:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:55,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 15:31:55,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:31:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 44 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:31:57,042 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:31:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 44 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:31:57,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538075803] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:31:57,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:31:57,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2024-12-02 15:31:57,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176049744] [2024-12-02 15:31:57,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:31:57,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 15:31:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:57,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 15:31:57,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2024-12-02 15:31:57,625 INFO L87 Difference]: Start difference. First operand 23694 states and 26923 transitions. Second operand has 29 states, 29 states have (on average 12.96551724137931) internal successors, (376), 29 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:32:01,894 INFO L93 Difference]: Finished difference Result 37667 states and 43019 transitions. [2024-12-02 15:32:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-12-02 15:32:01,894 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 12.96551724137931) internal successors, (376), 29 states have internal predecessors, (376), 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 144 [2024-12-02 15:32:01,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:32:01,913 INFO L225 Difference]: With dead ends: 37667 [2024-12-02 15:32:01,913 INFO L226 Difference]: Without dead ends: 31944 [2024-12-02 15:32:01,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2010 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1468, Invalid=6542, Unknown=0, NotChecked=0, Total=8010 [2024-12-02 15:32:01,920 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 2854 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 2808 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2854 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:32:01,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2854 Valid, 2732 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2808 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 15:32:01,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31944 states. [2024-12-02 15:32:02,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31944 to 23118. [2024-12-02 15:32:02,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23118 states, 23117 states have (on average 1.1345330276419952) internal successors, (26227), 23117 states have internal predecessors, (26227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:02,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23118 states to 23118 states and 26227 transitions. [2024-12-02 15:32:02,098 INFO L78 Accepts]: Start accepts. Automaton has 23118 states and 26227 transitions. Word has length 144 [2024-12-02 15:32:02,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:32:02,098 INFO L471 AbstractCegarLoop]: Abstraction has 23118 states and 26227 transitions. [2024-12-02 15:32:02,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 12.96551724137931) internal successors, (376), 29 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 23118 states and 26227 transitions. [2024-12-02 15:32:02,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 15:32:02,100 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:32:02,100 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:32:02,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 15:32:02,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:32:02,301 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:32:02,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash -155993082, now seen corresponding path program 1 times [2024-12-02 15:32:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:02,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512597879] [2024-12-02 15:32:02,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:02,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 15:32:02,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:32:02,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512597879] [2024-12-02 15:32:02,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512597879] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:32:02,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290434823] [2024-12-02 15:32:02,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:02,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:32:02,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:32:03,007 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:32:03,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 15:32:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:03,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 15:32:03,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:32:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 15:32:05,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:32:06,687 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 15:32:06,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290434823] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:32:06,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:32:06,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27, 21] total 57 [2024-12-02 15:32:06,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007846777] [2024-12-02 15:32:06,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:32:06,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-02 15:32:06,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:32:06,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-02 15:32:06,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=2792, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 15:32:06,689 INFO L87 Difference]: Start difference. First operand 23118 states and 26227 transitions. Second operand has 57 states, 57 states have (on average 5.578947368421052) internal successors, (318), 57 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:24,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:32:24,509 INFO L93 Difference]: Finished difference Result 41070 states and 46443 transitions. [2024-12-02 15:32:24,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2024-12-02 15:32:24,509 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.578947368421052) internal successors, (318), 57 states have internal predecessors, (318), 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 145 [2024-12-02 15:32:24,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:32:24,543 INFO L225 Difference]: With dead ends: 41070 [2024-12-02 15:32:24,543 INFO L226 Difference]: Without dead ends: 35452 [2024-12-02 15:32:24,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19139 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=7491, Invalid=44721, Unknown=0, NotChecked=0, Total=52212 [2024-12-02 15:32:24,548 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 5426 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 7458 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 7565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 7458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:32:24,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5426 Valid, 6342 Invalid, 7565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 7458 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 15:32:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35452 states. [2024-12-02 15:32:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35452 to 26059. [2024-12-02 15:32:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26059 states, 26058 states have (on average 1.1383452298718244) internal successors, (29663), 26058 states have internal predecessors, (29663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26059 states to 26059 states and 29663 transitions. [2024-12-02 15:32:24,757 INFO L78 Accepts]: Start accepts. Automaton has 26059 states and 29663 transitions. Word has length 145 [2024-12-02 15:32:24,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:32:24,757 INFO L471 AbstractCegarLoop]: Abstraction has 26059 states and 29663 transitions. [2024-12-02 15:32:24,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.578947368421052) internal successors, (318), 57 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 26059 states and 29663 transitions. [2024-12-02 15:32:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 15:32:24,759 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:32:24,759 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:32:24,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 15:32:24,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-12-02 15:32:24,960 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:32:24,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1356374532, now seen corresponding path program 1 times [2024-12-02 15:32:24,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:24,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558816436] [2024-12-02 15:32:24,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:24,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:32:25,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:32:25,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558816436] [2024-12-02 15:32:25,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558816436] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:32:25,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861787720] [2024-12-02 15:32:25,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:25,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:32:25,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:32:25,868 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:32:25,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 15:32:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:26,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-02 15:32:26,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:32:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:32:27,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:32:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:32:28,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861787720] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:32:28,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:32:28,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 20] total 53 [2024-12-02 15:32:28,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285148615] [2024-12-02 15:32:28,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:32:28,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 15:32:28,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:32:28,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 15:32:28,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=2464, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 15:32:28,998 INFO L87 Difference]: Start difference. First operand 26059 states and 29663 transitions. Second operand has 53 states, 53 states have (on average 5.69811320754717) internal successors, (302), 53 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:32,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:32:32,544 INFO L93 Difference]: Finished difference Result 33226 states and 37815 transitions. [2024-12-02 15:32:32,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 15:32:32,545 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.69811320754717) internal successors, (302), 53 states have internal predecessors, (302), 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 145 [2024-12-02 15:32:32,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:32:32,563 INFO L225 Difference]: With dead ends: 33226 [2024-12-02 15:32:32,563 INFO L226 Difference]: Without dead ends: 30850 [2024-12-02 15:32:32,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2146 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1679, Invalid=7633, Unknown=0, NotChecked=0, Total=9312 [2024-12-02 15:32:32,569 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 3537 mSDsluCounter, 6400 mSDsCounter, 0 mSdLazyCounter, 2963 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3537 SdHoareTripleChecker+Valid, 6782 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:32:32,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3537 Valid, 6782 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2963 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 15:32:32,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30850 states. [2024-12-02 15:32:32,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30850 to 26058. [2024-12-02 15:32:32,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26058 states, 26057 states have (on average 1.1382737843957478) internal successors, (29660), 26057 states have internal predecessors, (29660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26058 states to 26058 states and 29660 transitions. [2024-12-02 15:32:32,772 INFO L78 Accepts]: Start accepts. Automaton has 26058 states and 29660 transitions. Word has length 145 [2024-12-02 15:32:32,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:32:32,772 INFO L471 AbstractCegarLoop]: Abstraction has 26058 states and 29660 transitions. [2024-12-02 15:32:32,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.69811320754717) internal successors, (302), 53 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:32,772 INFO L276 IsEmpty]: Start isEmpty. Operand 26058 states and 29660 transitions. [2024-12-02 15:32:32,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 15:32:32,774 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:32:32,774 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:32:32,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 15:32:32,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2024-12-02 15:32:32,975 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:32:32,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:32,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1194216713, now seen corresponding path program 1 times [2024-12-02 15:32:32,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:32,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263472156] [2024-12-02 15:32:32,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:32,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:32:33,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:32:33,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263472156] [2024-12-02 15:32:33,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263472156] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:32:33,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736370858] [2024-12-02 15:32:33,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:33,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:32:33,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:32:33,549 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:32:33,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 15:32:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:33,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 15:32:33,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:32:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:32:35,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:32:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 46 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:32:36,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736370858] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:32:36,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:32:36,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 11] total 49 [2024-12-02 15:32:36,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130143294] [2024-12-02 15:32:36,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:32:36,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 15:32:36,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:32:36,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 15:32:36,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2132, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:32:36,218 INFO L87 Difference]: Start difference. First operand 26058 states and 29660 transitions. Second operand has 49 states, 49 states have (on average 8.020408163265307) internal successors, (393), 49 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:32:48,949 INFO L93 Difference]: Finished difference Result 38718 states and 44002 transitions. [2024-12-02 15:32:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2024-12-02 15:32:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 8.020408163265307) internal successors, (393), 49 states have internal predecessors, (393), 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 148 [2024-12-02 15:32:48,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:32:48,965 INFO L225 Difference]: With dead ends: 38718 [2024-12-02 15:32:48,966 INFO L226 Difference]: Without dead ends: 29228 [2024-12-02 15:32:48,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13239 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=4173, Invalid=32883, Unknown=0, NotChecked=0, Total=37056 [2024-12-02 15:32:48,971 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 4708 mSDsluCounter, 6616 mSDsCounter, 0 mSdLazyCounter, 7409 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 6891 SdHoareTripleChecker+Invalid, 7498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 7409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:32:48,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4708 Valid, 6891 Invalid, 7498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 7409 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 15:32:48,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29228 states. [2024-12-02 15:32:49,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29228 to 22903. [2024-12-02 15:32:49,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22903 states, 22902 states have (on average 1.132128198410619) internal successors, (25928), 22902 states have internal predecessors, (25928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:49,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22903 states to 22903 states and 25928 transitions. [2024-12-02 15:32:49,166 INFO L78 Accepts]: Start accepts. Automaton has 22903 states and 25928 transitions. Word has length 148 [2024-12-02 15:32:49,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:32:49,166 INFO L471 AbstractCegarLoop]: Abstraction has 22903 states and 25928 transitions. [2024-12-02 15:32:49,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.020408163265307) internal successors, (393), 49 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 22903 states and 25928 transitions. [2024-12-02 15:32:49,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 15:32:49,168 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:32:49,168 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:32:49,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 15:32:49,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:32:49,368 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:32:49,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:49,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1122911055, now seen corresponding path program 1 times [2024-12-02 15:32:49,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:49,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635580535] [2024-12-02 15:32:49,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:49,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:32:49,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:32:49,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635580535] [2024-12-02 15:32:49,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635580535] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:32:49,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:32:49,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:32:49,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523399240] [2024-12-02 15:32:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:32:49,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:32:49,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:32:49,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:32:49,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:32:49,420 INFO L87 Difference]: Start difference. First operand 22903 states and 25928 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:49,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:32:49,548 INFO L93 Difference]: Finished difference Result 29898 states and 33920 transitions. [2024-12-02 15:32:49,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:32:49,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 148 [2024-12-02 15:32:49,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:32:49,560 INFO L225 Difference]: With dead ends: 29898 [2024-12-02 15:32:49,560 INFO L226 Difference]: Without dead ends: 20012 [2024-12-02 15:32:49,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:32:49,565 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 116 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:32:49,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 372 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:32:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20012 states. [2024-12-02 15:32:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20012 to 18441. [2024-12-02 15:32:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18441 states, 18440 states have (on average 1.1238069414316703) internal successors, (20723), 18440 states have internal predecessors, (20723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18441 states to 18441 states and 20723 transitions. [2024-12-02 15:32:49,717 INFO L78 Accepts]: Start accepts. Automaton has 18441 states and 20723 transitions. Word has length 148 [2024-12-02 15:32:49,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:32:49,717 INFO L471 AbstractCegarLoop]: Abstraction has 18441 states and 20723 transitions. [2024-12-02 15:32:49,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:32:49,717 INFO L276 IsEmpty]: Start isEmpty. Operand 18441 states and 20723 transitions. [2024-12-02 15:32:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 15:32:49,719 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:32:49,719 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:32:49,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-12-02 15:32:49,719 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:32:49,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:49,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1220712342, now seen corresponding path program 1 times [2024-12-02 15:32:49,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:49,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889498048] [2024-12-02 15:32:49,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:49,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:32:50,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:32:50,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889498048] [2024-12-02 15:32:50,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889498048] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:32:50,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561314051] [2024-12-02 15:32:50,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:50,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:32:50,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:32:50,362 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:32:50,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 15:32:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:50,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 15:32:50,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:32:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:32:51,989 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:32:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:32:52,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561314051] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:32:52,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:32:52,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 11] total 47 [2024-12-02 15:32:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026660472] [2024-12-02 15:32:52,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:32:52,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-12-02 15:32:52,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:32:52,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-12-02 15:32:52,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 15:32:52,909 INFO L87 Difference]: Start difference. First operand 18441 states and 20723 transitions. Second operand has 47 states, 47 states have (on average 8.170212765957446) internal successors, (384), 47 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:33:07,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:33:07,242 INFO L93 Difference]: Finished difference Result 29015 states and 32693 transitions. [2024-12-02 15:33:07,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2024-12-02 15:33:07,242 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.170212765957446) internal successors, (384), 47 states have internal predecessors, (384), 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 148 [2024-12-02 15:33:07,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:33:07,255 INFO L225 Difference]: With dead ends: 29015 [2024-12-02 15:33:07,255 INFO L226 Difference]: Without dead ends: 23594 [2024-12-02 15:33:07,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14516 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=4796, Invalid=35806, Unknown=0, NotChecked=0, Total=40602 [2024-12-02 15:33:07,259 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 3915 mSDsluCounter, 8070 mSDsCounter, 0 mSdLazyCounter, 9059 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3915 SdHoareTripleChecker+Valid, 8392 SdHoareTripleChecker+Invalid, 9137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 9059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:33:07,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3915 Valid, 8392 Invalid, 9137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 9059 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-12-02 15:33:07,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23594 states. [2024-12-02 15:33:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23594 to 18280. [2024-12-02 15:33:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18280 states, 18279 states have (on average 1.1218337983478308) internal successors, (20506), 18279 states have internal predecessors, (20506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:33:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18280 states to 18280 states and 20506 transitions. [2024-12-02 15:33:07,419 INFO L78 Accepts]: Start accepts. Automaton has 18280 states and 20506 transitions. Word has length 148 [2024-12-02 15:33:07,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:33:07,419 INFO L471 AbstractCegarLoop]: Abstraction has 18280 states and 20506 transitions. [2024-12-02 15:33:07,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.170212765957446) internal successors, (384), 47 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:33:07,419 INFO L276 IsEmpty]: Start isEmpty. Operand 18280 states and 20506 transitions. [2024-12-02 15:33:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 15:33:07,422 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:33:07,422 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:33:07,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 15:33:07,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:33:07,623 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:33:07,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:33:07,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1700252570, now seen corresponding path program 1 times [2024-12-02 15:33:07,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:33:07,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752823510] [2024-12-02 15:33:07,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:33:07,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:33:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:33:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:33:08,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:33:08,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752823510] [2024-12-02 15:33:08,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752823510] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:33:08,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173302533] [2024-12-02 15:33:08,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:33:08,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:33:08,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:33:08,332 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:33:08,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 15:33:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:33:08,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-12-02 15:33:08,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:33:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:33:10,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:33:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 29 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:33:15,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173302533] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:33:15,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:33:15,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29, 31] total 75 [2024-12-02 15:33:15,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900610860] [2024-12-02 15:33:15,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:33:15,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-12-02 15:33:15,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:33:15,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-12-02 15:33:15,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=5013, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 15:33:15,909 INFO L87 Difference]: Start difference. First operand 18280 states and 20506 transitions. Second operand has 75 states, 75 states have (on average 5.56) internal successors, (417), 75 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:34:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:34:16,722 INFO L93 Difference]: Finished difference Result 24830 states and 27856 transitions. [2024-12-02 15:34:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 292 states. [2024-12-02 15:34:16,723 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 5.56) internal successors, (417), 75 states have internal predecessors, (417), 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 150 [2024-12-02 15:34:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:34:16,734 INFO L225 Difference]: With dead ends: 24830 [2024-12-02 15:34:16,734 INFO L226 Difference]: Without dead ends: 23305 [2024-12-02 15:34:16,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49806 ImplicationChecksByTransitivity, 54.9s TimeCoverageRelationStatistics Valid=16973, Invalid=113709, Unknown=0, NotChecked=0, Total=130682 [2024-12-02 15:34:16,739 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 10119 mSDsluCounter, 10038 mSDsCounter, 0 mSdLazyCounter, 9823 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10119 SdHoareTripleChecker+Valid, 10337 SdHoareTripleChecker+Invalid, 10262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 9823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:34:16,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10119 Valid, 10337 Invalid, 10262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [439 Valid, 9823 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-12-02 15:34:16,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23305 states. [2024-12-02 15:34:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23305 to 18047. [2024-12-02 15:34:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18047 states, 18046 states have (on average 1.122187742435997) internal successors, (20251), 18046 states have internal predecessors, (20251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:34:16,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18047 states to 18047 states and 20251 transitions. [2024-12-02 15:34:16,857 INFO L78 Accepts]: Start accepts. Automaton has 18047 states and 20251 transitions. Word has length 150 [2024-12-02 15:34:16,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:34:16,857 INFO L471 AbstractCegarLoop]: Abstraction has 18047 states and 20251 transitions. [2024-12-02 15:34:16,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 5.56) internal successors, (417), 75 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:34:16,857 INFO L276 IsEmpty]: Start isEmpty. Operand 18047 states and 20251 transitions. [2024-12-02 15:34:16,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 15:34:16,859 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:34:16,859 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:34:16,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-12-02 15:34:17,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:17,060 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:34:17,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:34:17,060 INFO L85 PathProgramCache]: Analyzing trace with hash -565535739, now seen corresponding path program 1 times [2024-12-02 15:34:17,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:34:17,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244306495] [2024-12-02 15:34:17,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:34:17,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:34:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:34:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:34:17,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:34:17,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244306495] [2024-12-02 15:34:17,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244306495] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:34:17,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097129179] [2024-12-02 15:34:17,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:34:17,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:17,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:34:17,945 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:34:17,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 15:34:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:34:18,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 15:34:18,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:34:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:34:19,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:34:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:34:20,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097129179] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:34:20,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:34:20,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 18] total 49 [2024-12-02 15:34:20,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143381663] [2024-12-02 15:34:20,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:34:20,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 15:34:20,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:34:20,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 15:34:20,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2101, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:34:20,421 INFO L87 Difference]: Start difference. First operand 18047 states and 20251 transitions. Second operand has 49 states, 49 states have (on average 7.714285714285714) internal successors, (378), 49 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:34:22,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:34:22,178 INFO L93 Difference]: Finished difference Result 22243 states and 24977 transitions. [2024-12-02 15:34:22,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-12-02 15:34:22,179 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.714285714285714) internal successors, (378), 49 states have internal predecessors, (378), 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 150 [2024-12-02 15:34:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:34:22,189 INFO L225 Difference]: With dead ends: 22243 [2024-12-02 15:34:22,190 INFO L226 Difference]: Without dead ends: 21366 [2024-12-02 15:34:22,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=747, Invalid=5733, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 15:34:22,192 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 1103 mSDsluCounter, 6689 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 6996 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:34:22,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 6996 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:34:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21366 states. [2024-12-02 15:34:22,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21366 to 18173. [2024-12-02 15:34:22,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18173 states, 18172 states have (on average 1.1213405238828968) internal successors, (20377), 18172 states have internal predecessors, (20377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:34:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18173 states to 18173 states and 20377 transitions. [2024-12-02 15:34:22,308 INFO L78 Accepts]: Start accepts. Automaton has 18173 states and 20377 transitions. Word has length 150 [2024-12-02 15:34:22,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:34:22,308 INFO L471 AbstractCegarLoop]: Abstraction has 18173 states and 20377 transitions. [2024-12-02 15:34:22,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.714285714285714) internal successors, (378), 49 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:34:22,308 INFO L276 IsEmpty]: Start isEmpty. Operand 18173 states and 20377 transitions. [2024-12-02 15:34:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 15:34:22,310 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:34:22,310 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:34:22,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 15:34:22,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:22,511 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:34:22,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:34:22,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1971246669, now seen corresponding path program 1 times [2024-12-02 15:34:22,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:34:22,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374407128] [2024-12-02 15:34:22,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:34:22,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:34:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:34:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:34:23,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:34:23,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374407128] [2024-12-02 15:34:23,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374407128] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:34:23,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943101094] [2024-12-02 15:34:23,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:34:23,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:23,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:34:23,123 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:34:23,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 15:34:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:34:23,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-12-02 15:34:23,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:34:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:34:25,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:34:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:34:26,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943101094] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:34:26,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:34:26,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28, 19] total 60 [2024-12-02 15:34:26,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144796549] [2024-12-02 15:34:26,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:34:26,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 15:34:26,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:34:26,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 15:34:26,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=3153, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 15:34:26,760 INFO L87 Difference]: Start difference. First operand 18173 states and 20377 transitions. Second operand has 60 states, 60 states have (on average 6.683333333333334) internal successors, (401), 60 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:34:44,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:34:44,826 INFO L93 Difference]: Finished difference Result 24809 states and 27859 transitions. [2024-12-02 15:34:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2024-12-02 15:34:44,826 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.683333333333334) internal successors, (401), 60 states have internal predecessors, (401), 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 150 [2024-12-02 15:34:44,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:34:44,845 INFO L225 Difference]: With dead ends: 24809 [2024-12-02 15:34:44,845 INFO L226 Difference]: Without dead ends: 23672 [2024-12-02 15:34:44,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18291 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=6255, Invalid=44595, Unknown=0, NotChecked=0, Total=50850 [2024-12-02 15:34:44,852 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 3333 mSDsluCounter, 7981 mSDsCounter, 0 mSdLazyCounter, 7100 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3333 SdHoareTripleChecker+Valid, 8273 SdHoareTripleChecker+Invalid, 7193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 7100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:34:44,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3333 Valid, 8273 Invalid, 7193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 7100 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-12-02 15:34:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23672 states. [2024-12-02 15:34:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23672 to 18127. [2024-12-02 15:34:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18127 states, 18126 states have (on average 1.1210415977049542) internal successors, (20320), 18126 states have internal predecessors, (20320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:34:45,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18127 states to 18127 states and 20320 transitions. [2024-12-02 15:34:45,039 INFO L78 Accepts]: Start accepts. Automaton has 18127 states and 20320 transitions. Word has length 150 [2024-12-02 15:34:45,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:34:45,040 INFO L471 AbstractCegarLoop]: Abstraction has 18127 states and 20320 transitions. [2024-12-02 15:34:45,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.683333333333334) internal successors, (401), 60 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:34:45,040 INFO L276 IsEmpty]: Start isEmpty. Operand 18127 states and 20320 transitions. [2024-12-02 15:34:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 15:34:45,041 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:34:45,042 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:34:45,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 15:34:45,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:45,242 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:34:45,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:34:45,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1871489359, now seen corresponding path program 1 times [2024-12-02 15:34:45,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:34:45,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053201251] [2024-12-02 15:34:45,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:34:45,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:34:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:34:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 15:34:45,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:34:45,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053201251] [2024-12-02 15:34:45,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053201251] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:34:45,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:34:45,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:34:45,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481658326] [2024-12-02 15:34:45,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:34:45,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:34:45,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:34:45,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:34:45,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:34:45,337 INFO L87 Difference]: Start difference. First operand 18127 states and 20320 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:34:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:34:45,429 INFO L93 Difference]: Finished difference Result 22690 states and 25532 transitions. [2024-12-02 15:34:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:34:45,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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 151 [2024-12-02 15:34:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:34:45,438 INFO L225 Difference]: With dead ends: 22690 [2024-12-02 15:34:45,438 INFO L226 Difference]: Without dead ends: 17426 [2024-12-02 15:34:45,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:34:45,442 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 360 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:34:45,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 616 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:34:45,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17426 states. [2024-12-02 15:34:45,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17426 to 17022. [2024-12-02 15:34:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17022 states, 17021 states have (on average 1.118148169907761) internal successors, (19032), 17021 states have internal predecessors, (19032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:34:45,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17022 states to 17022 states and 19032 transitions. [2024-12-02 15:34:45,564 INFO L78 Accepts]: Start accepts. Automaton has 17022 states and 19032 transitions. Word has length 151 [2024-12-02 15:34:45,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:34:45,565 INFO L471 AbstractCegarLoop]: Abstraction has 17022 states and 19032 transitions. [2024-12-02 15:34:45,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:34:45,565 INFO L276 IsEmpty]: Start isEmpty. Operand 17022 states and 19032 transitions. [2024-12-02 15:34:45,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 15:34:45,567 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:34:45,567 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:34:45,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-12-02 15:34:45,567 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:34:45,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:34:45,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1615536564, now seen corresponding path program 1 times [2024-12-02 15:34:45,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:34:45,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469665178] [2024-12-02 15:34:45,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:34:45,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:34:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:34:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 35 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:34:46,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:34:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469665178] [2024-12-02 15:34:46,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469665178] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:34:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887151790] [2024-12-02 15:34:46,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:34:46,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:46,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:34:46,081 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:34:46,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 15:34:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:34:46,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 15:34:46,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:34:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 27 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:34:47,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:34:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 27 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:34:50,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887151790] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:34:50,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:34:50,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 17] total 43 [2024-12-02 15:34:50,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548071796] [2024-12-02 15:34:50,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:34:50,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 15:34:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:34:50,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 15:34:50,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1655, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 15:34:50,875 INFO L87 Difference]: Start difference. First operand 17022 states and 19032 transitions. Second operand has 44 states, 44 states have (on average 9.704545454545455) internal successors, (427), 43 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:35:02,551 INFO L93 Difference]: Finished difference Result 32106 states and 35944 transitions. [2024-12-02 15:35:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-12-02 15:35:02,552 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 9.704545454545455) internal successors, (427), 43 states have internal predecessors, (427), 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 151 [2024-12-02 15:35:02,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:35:02,570 INFO L225 Difference]: With dead ends: 32106 [2024-12-02 15:35:02,570 INFO L226 Difference]: Without dead ends: 21493 [2024-12-02 15:35:02,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6039 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=3935, Invalid=20245, Unknown=0, NotChecked=0, Total=24180 [2024-12-02 15:35:02,578 INFO L435 NwaCegarLoop]: 311 mSDtfsCounter, 2825 mSDsluCounter, 6343 mSDsCounter, 0 mSdLazyCounter, 6552 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2825 SdHoareTripleChecker+Valid, 6654 SdHoareTripleChecker+Invalid, 6614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 6552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:35:02,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2825 Valid, 6654 Invalid, 6614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 6552 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 15:35:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21493 states. [2024-12-02 15:35:02,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21493 to 10910. [2024-12-02 15:35:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10910 states, 10909 states have (on average 1.1056008800073334) internal successors, (12061), 10909 states have internal predecessors, (12061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10910 states to 10910 states and 12061 transitions. [2024-12-02 15:35:02,720 INFO L78 Accepts]: Start accepts. Automaton has 10910 states and 12061 transitions. Word has length 151 [2024-12-02 15:35:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:35:02,720 INFO L471 AbstractCegarLoop]: Abstraction has 10910 states and 12061 transitions. [2024-12-02 15:35:02,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 9.704545454545455) internal successors, (427), 43 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:02,721 INFO L276 IsEmpty]: Start isEmpty. Operand 10910 states and 12061 transitions. [2024-12-02 15:35:02,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 15:35:02,722 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:35:02,722 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:35:02,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 15:35:02,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:35:02,923 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:35:02,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:02,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1561311474, now seen corresponding path program 1 times [2024-12-02 15:35:02,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:02,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857914792] [2024-12-02 15:35:02,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:02,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:35:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:03,017 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 15:35:03,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:35:03,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857914792] [2024-12-02 15:35:03,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857914792] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:35:03,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:35:03,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:35:03,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223666413] [2024-12-02 15:35:03,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:35:03,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:35:03,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:35:03,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:35:03,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:35:03,019 INFO L87 Difference]: Start difference. First operand 10910 states and 12061 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:03,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:35:03,067 INFO L93 Difference]: Finished difference Result 14456 states and 16059 transitions. [2024-12-02 15:35:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:35:03,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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 151 [2024-12-02 15:35:03,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:35:03,073 INFO L225 Difference]: With dead ends: 14456 [2024-12-02 15:35:03,073 INFO L226 Difference]: Without dead ends: 10401 [2024-12-02 15:35:03,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:35:03,076 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 366 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:35:03,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 579 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:35:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2024-12-02 15:35:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 10201. [2024-12-02 15:35:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10201 states, 10200 states have (on average 1.0993137254901961) internal successors, (11213), 10200 states have internal predecessors, (11213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10201 states to 10201 states and 11213 transitions. [2024-12-02 15:35:03,152 INFO L78 Accepts]: Start accepts. Automaton has 10201 states and 11213 transitions. Word has length 151 [2024-12-02 15:35:03,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:35:03,153 INFO L471 AbstractCegarLoop]: Abstraction has 10201 states and 11213 transitions. [2024-12-02 15:35:03,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 10201 states and 11213 transitions. [2024-12-02 15:35:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 15:35:03,154 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:35:03,154 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:35:03,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-12-02 15:35:03,154 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:35:03,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:03,155 INFO L85 PathProgramCache]: Analyzing trace with hash 281447796, now seen corresponding path program 1 times [2024-12-02 15:35:03,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:03,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845408312] [2024-12-02 15:35:03,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:03,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:35:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:35:03,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:35:03,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845408312] [2024-12-02 15:35:03,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845408312] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:35:03,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996361074] [2024-12-02 15:35:03,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:03,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:35:03,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:35:04,001 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:35:04,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 15:35:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:04,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 15:35:04,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:35:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:35:05,706 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:35:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:35:08,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996361074] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:35:08,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:35:08,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 21] total 61 [2024-12-02 15:35:08,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507817844] [2024-12-02 15:35:08,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:35:08,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 15:35:08,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:35:08,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 15:35:08,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=3328, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 15:35:08,295 INFO L87 Difference]: Start difference. First operand 10201 states and 11213 transitions. Second operand has 61 states, 61 states have (on average 6.901639344262295) internal successors, (421), 61 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:35:34,165 INFO L93 Difference]: Finished difference Result 13633 states and 14998 transitions. [2024-12-02 15:35:34,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2024-12-02 15:35:34,166 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 6.901639344262295) internal successors, (421), 61 states have internal predecessors, (421), 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 151 [2024-12-02 15:35:34,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:35:34,172 INFO L225 Difference]: With dead ends: 13633 [2024-12-02 15:35:34,172 INFO L226 Difference]: Without dead ends: 12879 [2024-12-02 15:35:34,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18711 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=7087, Invalid=45125, Unknown=0, NotChecked=0, Total=52212 [2024-12-02 15:35:34,174 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 4094 mSDsluCounter, 5860 mSDsCounter, 0 mSdLazyCounter, 5026 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 6083 SdHoareTripleChecker+Invalid, 5140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 5026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:35:34,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4094 Valid, 6083 Invalid, 5140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 5026 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 15:35:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12879 states. [2024-12-02 15:35:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12879 to 9479. [2024-12-02 15:35:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9479 states, 9478 states have (on average 1.1012871913905888) internal successors, (10438), 9478 states have internal predecessors, (10438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9479 states to 9479 states and 10438 transitions. [2024-12-02 15:35:34,233 INFO L78 Accepts]: Start accepts. Automaton has 9479 states and 10438 transitions. Word has length 151 [2024-12-02 15:35:34,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:35:34,233 INFO L471 AbstractCegarLoop]: Abstraction has 9479 states and 10438 transitions. [2024-12-02 15:35:34,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 6.901639344262295) internal successors, (421), 61 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:34,233 INFO L276 IsEmpty]: Start isEmpty. Operand 9479 states and 10438 transitions. [2024-12-02 15:35:34,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 15:35:34,234 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:35:34,234 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:35:34,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-02 15:35:34,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:35:34,435 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:35:34,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:34,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1399069422, now seen corresponding path program 1 times [2024-12-02 15:35:34,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:34,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998768757] [2024-12-02 15:35:34,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:34,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:35:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-12-02 15:35:34,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:35:34,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998768757] [2024-12-02 15:35:34,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998768757] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:35:34,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:35:34,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:35:34,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610445444] [2024-12-02 15:35:34,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:35:34,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:35:34,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:35:34,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:35:34,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:35:34,565 INFO L87 Difference]: Start difference. First operand 9479 states and 10438 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:34,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:35:34,618 INFO L93 Difference]: Finished difference Result 12150 states and 13465 transitions. [2024-12-02 15:35:34,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:35:34,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 151 [2024-12-02 15:35:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:35:34,623 INFO L225 Difference]: With dead ends: 12150 [2024-12-02 15:35:34,623 INFO L226 Difference]: Without dead ends: 8995 [2024-12-02 15:35:34,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:35:34,625 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 366 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:35:34,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 555 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:35:34,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8995 states. [2024-12-02 15:35:34,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8995 to 8795. [2024-12-02 15:35:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8795 states, 8794 states have (on average 1.0962019558790084) internal successors, (9640), 8794 states have internal predecessors, (9640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:34,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8795 states to 8795 states and 9640 transitions. [2024-12-02 15:35:34,709 INFO L78 Accepts]: Start accepts. Automaton has 8795 states and 9640 transitions. Word has length 151 [2024-12-02 15:35:34,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:35:34,709 INFO L471 AbstractCegarLoop]: Abstraction has 8795 states and 9640 transitions. [2024-12-02 15:35:34,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:34,709 INFO L276 IsEmpty]: Start isEmpty. Operand 8795 states and 9640 transitions. [2024-12-02 15:35:34,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 15:35:34,711 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:35:34,711 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:35:34,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-12-02 15:35:34,711 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:35:34,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:34,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1757586042, now seen corresponding path program 1 times [2024-12-02 15:35:34,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:34,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348468519] [2024-12-02 15:35:34,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:34,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:35:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:35,119 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:35:35,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:35:35,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348468519] [2024-12-02 15:35:35,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348468519] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:35:35,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671583849] [2024-12-02 15:35:35,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:35,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:35:35,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:35:35,121 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:35:35,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 15:35:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:35,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 15:35:35,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:35:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:35:36,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:35:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:35:37,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671583849] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:35:37,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:35:37,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-12-02 15:35:37,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446008687] [2024-12-02 15:35:37,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:35:37,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 15:35:37,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:35:37,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 15:35:37,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-12-02 15:35:37,659 INFO L87 Difference]: Start difference. First operand 8795 states and 9640 transitions. Second operand has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 25 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:35:38,384 INFO L93 Difference]: Finished difference Result 11543 states and 12726 transitions. [2024-12-02 15:35:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 15:35:38,385 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 25 states have internal predecessors, (350), 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 152 [2024-12-02 15:35:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:35:38,389 INFO L225 Difference]: With dead ends: 11543 [2024-12-02 15:35:38,390 INFO L226 Difference]: Without dead ends: 8523 [2024-12-02 15:35:38,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=304, Invalid=1178, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 15:35:38,392 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 507 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:35:38,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1617 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:35:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8523 states. [2024-12-02 15:35:38,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8523 to 7167. [2024-12-02 15:35:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7167 states, 7166 states have (on average 1.089171085682389) internal successors, (7805), 7166 states have internal predecessors, (7805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:38,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 7805 transitions. [2024-12-02 15:35:38,437 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 7805 transitions. Word has length 152 [2024-12-02 15:35:38,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:35:38,437 INFO L471 AbstractCegarLoop]: Abstraction has 7167 states and 7805 transitions. [2024-12-02 15:35:38,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 25 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 7805 transitions. [2024-12-02 15:35:38,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 15:35:38,438 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:35:38,438 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:35:38,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 15:35:38,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-12-02 15:35:38,639 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:35:38,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:38,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1504345067, now seen corresponding path program 1 times [2024-12-02 15:35:38,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:38,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690494069] [2024-12-02 15:35:38,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:38,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:35:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 15:35:39,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:35:39,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690494069] [2024-12-02 15:35:39,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690494069] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:35:39,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:35:39,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 15:35:39,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243713358] [2024-12-02 15:35:39,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:35:39,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 15:35:39,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:35:39,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 15:35:39,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:35:39,240 INFO L87 Difference]: Start difference. First operand 7167 states and 7805 transitions. Second operand has 20 states, 20 states have (on average 6.5) internal successors, (130), 20 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:40,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:35:40,566 INFO L93 Difference]: Finished difference Result 11440 states and 12544 transitions. [2024-12-02 15:35:40,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 15:35:40,566 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.5) internal successors, (130), 20 states have internal predecessors, (130), 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 154 [2024-12-02 15:35:40,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:35:40,572 INFO L225 Difference]: With dead ends: 11440 [2024-12-02 15:35:40,572 INFO L226 Difference]: Without dead ends: 10976 [2024-12-02 15:35:40,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=1346, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 15:35:40,574 INFO L435 NwaCegarLoop]: 336 mSDtfsCounter, 671 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 4874 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:35:40,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 4874 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1756 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:35:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10976 states. [2024-12-02 15:35:40,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10976 to 7167. [2024-12-02 15:35:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7167 states, 7166 states have (on average 1.0890315378174713) internal successors, (7804), 7166 states have internal predecessors, (7804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 7804 transitions. [2024-12-02 15:35:40,632 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 7804 transitions. Word has length 154 [2024-12-02 15:35:40,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:35:40,632 INFO L471 AbstractCegarLoop]: Abstraction has 7167 states and 7804 transitions. [2024-12-02 15:35:40,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.5) internal successors, (130), 20 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:40,632 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 7804 transitions. [2024-12-02 15:35:40,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 15:35:40,634 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:35:40,634 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:35:40,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-12-02 15:35:40,634 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:35:40,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:40,635 INFO L85 PathProgramCache]: Analyzing trace with hash -450040299, now seen corresponding path program 1 times [2024-12-02 15:35:40,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:40,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454848821] [2024-12-02 15:35:40,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:40,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:35:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 54 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 15:35:41,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:35:41,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454848821] [2024-12-02 15:35:41,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454848821] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:35:41,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214388480] [2024-12-02 15:35:41,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:41,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:35:41,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:35:41,288 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:35:41,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 15:35:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:41,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 15:35:41,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:35:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 54 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 15:35:43,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:35:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 54 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 15:35:44,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214388480] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:35:44,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:35:44,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 20] total 53 [2024-12-02 15:35:44,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86343492] [2024-12-02 15:35:44,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:35:44,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 15:35:44,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:35:44,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 15:35:44,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2539, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 15:35:44,478 INFO L87 Difference]: Start difference. First operand 7167 states and 7804 transitions. Second operand has 53 states, 53 states have (on average 5.679245283018868) internal successors, (301), 53 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:47,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:35:47,181 INFO L93 Difference]: Finished difference Result 12431 states and 13644 transitions. [2024-12-02 15:35:47,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-12-02 15:35:47,182 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.679245283018868) internal successors, (301), 53 states have internal predecessors, (301), 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 154 [2024-12-02 15:35:47,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:35:47,188 INFO L225 Difference]: With dead ends: 12431 [2024-12-02 15:35:47,188 INFO L226 Difference]: Without dead ends: 11874 [2024-12-02 15:35:47,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=673, Invalid=5647, Unknown=0, NotChecked=0, Total=6320 [2024-12-02 15:35:47,190 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 1916 mSDsluCounter, 6465 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 6773 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:35:47,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 6773 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 15:35:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11874 states. [2024-12-02 15:35:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11874 to 7163. [2024-12-02 15:35:47,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7163 states, 7162 states have (on average 1.0889416364144093) internal successors, (7799), 7162 states have internal predecessors, (7799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7163 states to 7163 states and 7799 transitions. [2024-12-02 15:35:47,257 INFO L78 Accepts]: Start accepts. Automaton has 7163 states and 7799 transitions. Word has length 154 [2024-12-02 15:35:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:35:47,257 INFO L471 AbstractCegarLoop]: Abstraction has 7163 states and 7799 transitions. [2024-12-02 15:35:47,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.679245283018868) internal successors, (301), 53 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:35:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 7163 states and 7799 transitions. [2024-12-02 15:35:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 15:35:47,258 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:35:47,258 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:35:47,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-02 15:35:47,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2024-12-02 15:35:47,459 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:35:47,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:47,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1784170447, now seen corresponding path program 1 times [2024-12-02 15:35:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:47,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458253190] [2024-12-02 15:35:47,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:35:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:35:48,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:35:48,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458253190] [2024-12-02 15:35:48,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458253190] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:35:48,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661380790] [2024-12-02 15:35:48,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:48,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:35:48,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:35:48,020 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:35:48,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-02 15:35:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:48,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 15:35:48,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:35:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 63 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:35:50,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:35:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 63 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:35:52,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661380790] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:35:52,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:35:52,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 17] total 52 [2024-12-02 15:35:52,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901290139] [2024-12-02 15:35:52,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:35:52,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 15:35:52,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:35:52,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 15:35:52,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2465, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 15:35:52,311 INFO L87 Difference]: Start difference. First operand 7163 states and 7799 transitions. Second operand has 52 states, 52 states have (on average 6.75) internal successors, (351), 52 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:36:02,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:36:02,794 INFO L93 Difference]: Finished difference Result 16368 states and 17980 transitions. [2024-12-02 15:36:02,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-12-02 15:36:02,794 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.75) internal successors, (351), 52 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2024-12-02 15:36:02,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:36:02,801 INFO L225 Difference]: With dead ends: 16368 [2024-12-02 15:36:02,802 INFO L226 Difference]: Without dead ends: 15092 [2024-12-02 15:36:02,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4285 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2323, Invalid=15767, Unknown=0, NotChecked=0, Total=18090 [2024-12-02 15:36:02,804 INFO L435 NwaCegarLoop]: 655 mSDtfsCounter, 3491 mSDsluCounter, 19939 mSDsCounter, 0 mSdLazyCounter, 8628 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3491 SdHoareTripleChecker+Valid, 20594 SdHoareTripleChecker+Invalid, 8657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 8628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:36:02,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3491 Valid, 20594 Invalid, 8657 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 8628 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-12-02 15:36:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15092 states. [2024-12-02 15:36:02,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15092 to 7142. [2024-12-02 15:36:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7142 states, 7141 states have (on average 1.0889231200112028) internal successors, (7776), 7141 states have internal predecessors, (7776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:36:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7142 states to 7142 states and 7776 transitions. [2024-12-02 15:36:02,868 INFO L78 Accepts]: Start accepts. Automaton has 7142 states and 7776 transitions. Word has length 154 [2024-12-02 15:36:02,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:36:02,868 INFO L471 AbstractCegarLoop]: Abstraction has 7142 states and 7776 transitions. [2024-12-02 15:36:02,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 6.75) internal successors, (351), 52 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:36:02,868 INFO L276 IsEmpty]: Start isEmpty. Operand 7142 states and 7776 transitions. [2024-12-02 15:36:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 15:36:02,870 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:36:02,870 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:36:02,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-12-02 15:36:03,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:36:03,070 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:36:03,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:36:03,070 INFO L85 PathProgramCache]: Analyzing trace with hash -902967484, now seen corresponding path program 1 times [2024-12-02 15:36:03,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:36:03,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543063147] [2024-12-02 15:36:03,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:36:03,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:36:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:36:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 15:36:04,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:36:04,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543063147] [2024-12-02 15:36:04,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543063147] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:36:04,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685975163] [2024-12-02 15:36:04,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:36:04,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:36:04,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:36:04,619 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:36:04,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-02 15:36:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:36:04,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-12-02 15:36:04,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:36:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 15:36:08,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:36:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 15:36:13,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685975163] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:36:13,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:36:13,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28, 29] total 77 [2024-12-02 15:36:13,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644528555] [2024-12-02 15:36:13,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:36:13,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-12-02 15:36:13,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:36:13,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-12-02 15:36:13,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=5412, Unknown=0, NotChecked=0, Total=5852 [2024-12-02 15:36:13,623 INFO L87 Difference]: Start difference. First operand 7142 states and 7776 transitions. Second operand has 77 states, 77 states have (on average 4.714285714285714) internal successors, (363), 77 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:07,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:07,784 INFO L93 Difference]: Finished difference Result 19099 states and 20819 transitions. [2024-12-02 15:38:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 318 states. [2024-12-02 15:38:07,784 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.714285714285714) internal successors, (363), 77 states have internal predecessors, (363), 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 155 [2024-12-02 15:38:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:07,793 INFO L225 Difference]: With dead ends: 19099 [2024-12-02 15:38:07,793 INFO L226 Difference]: Without dead ends: 18280 [2024-12-02 15:38:07,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58667 ImplicationChecksByTransitivity, 104.0s TimeCoverageRelationStatistics Valid=16900, Invalid=133256, Unknown=0, NotChecked=0, Total=150156 [2024-12-02 15:38:07,799 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 8759 mSDsluCounter, 15505 mSDsCounter, 0 mSdLazyCounter, 15493 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8759 SdHoareTripleChecker+Valid, 15977 SdHoareTripleChecker+Invalid, 15745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 15493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:07,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8759 Valid, 15977 Invalid, 15745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 15493 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2024-12-02 15:38:07,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18280 states. [2024-12-02 15:38:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18280 to 7178. [2024-12-02 15:38:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7178 states, 7177 states have (on average 1.0886164135432632) internal successors, (7813), 7177 states have internal predecessors, (7813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:07,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7178 states to 7178 states and 7813 transitions. [2024-12-02 15:38:07,875 INFO L78 Accepts]: Start accepts. Automaton has 7178 states and 7813 transitions. Word has length 155 [2024-12-02 15:38:07,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:07,875 INFO L471 AbstractCegarLoop]: Abstraction has 7178 states and 7813 transitions. [2024-12-02 15:38:07,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.714285714285714) internal successors, (363), 77 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:07,875 INFO L276 IsEmpty]: Start isEmpty. Operand 7178 states and 7813 transitions. [2024-12-02 15:38:07,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 15:38:07,876 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:07,876 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:07,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-12-02 15:38:08,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:38:08,077 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:08,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:08,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1538472958, now seen corresponding path program 1 times [2024-12-02 15:38:08,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:08,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244666124] [2024-12-02 15:38:08,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:08,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 57 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:38:09,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:09,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244666124] [2024-12-02 15:38:09,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244666124] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:38:09,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851760918] [2024-12-02 15:38:09,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:09,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:38:09,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:38:09,030 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:38:09,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-02 15:38:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:09,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 15:38:09,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:38:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 57 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:38:10,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:38:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 57 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:38:11,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851760918] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:38:11,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:38:11,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 47 [2024-12-02 15:38:11,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404592091] [2024-12-02 15:38:11,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:38:11,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-12-02 15:38:11,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:11,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-12-02 15:38:11,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 15:38:11,977 INFO L87 Difference]: Start difference. First operand 7178 states and 7813 transitions. Second operand has 47 states, 47 states have (on average 6.8936170212765955) internal successors, (324), 47 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:17,067 INFO L93 Difference]: Finished difference Result 11176 states and 12246 transitions. [2024-12-02 15:38:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-12-02 15:38:17,067 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.8936170212765955) internal successors, (324), 47 states have internal predecessors, (324), 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 155 [2024-12-02 15:38:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:17,073 INFO L225 Difference]: With dead ends: 11176 [2024-12-02 15:38:17,073 INFO L226 Difference]: Without dead ends: 9688 [2024-12-02 15:38:17,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1453, Invalid=7859, Unknown=0, NotChecked=0, Total=9312 [2024-12-02 15:38:17,075 INFO L435 NwaCegarLoop]: 540 mSDtfsCounter, 2722 mSDsluCounter, 9590 mSDsCounter, 0 mSdLazyCounter, 4593 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 10130 SdHoareTripleChecker+Invalid, 4628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 4593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:17,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 10130 Invalid, 4628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 4593 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 15:38:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9688 states. [2024-12-02 15:38:17,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9688 to 7169. [2024-12-02 15:38:17,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7169 states, 7168 states have (on average 1.0884486607142858) internal successors, (7802), 7168 states have internal predecessors, (7802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7169 states to 7169 states and 7802 transitions. [2024-12-02 15:38:17,151 INFO L78 Accepts]: Start accepts. Automaton has 7169 states and 7802 transitions. Word has length 155 [2024-12-02 15:38:17,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:17,152 INFO L471 AbstractCegarLoop]: Abstraction has 7169 states and 7802 transitions. [2024-12-02 15:38:17,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.8936170212765955) internal successors, (324), 47 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 7169 states and 7802 transitions. [2024-12-02 15:38:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 15:38:17,153 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:17,153 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:17,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-02 15:38:17,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-12-02 15:38:17,353 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:17,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash -484035215, now seen corresponding path program 1 times [2024-12-02 15:38:17,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:17,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506674172] [2024-12-02 15:38:17,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:17,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-12-02 15:38:17,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:17,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506674172] [2024-12-02 15:38:17,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506674172] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:17,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:17,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:38:17,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943685056] [2024-12-02 15:38:17,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:17,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:38:17,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:17,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:38:17,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:38:17,431 INFO L87 Difference]: Start difference. First operand 7169 states and 7802 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:17,532 INFO L93 Difference]: Finished difference Result 8960 states and 9744 transitions. [2024-12-02 15:38:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:38:17,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 157 [2024-12-02 15:38:17,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:17,536 INFO L225 Difference]: With dead ends: 8960 [2024-12-02 15:38:17,536 INFO L226 Difference]: Without dead ends: 6753 [2024-12-02 15:38:17,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:38:17,537 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 286 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:17,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 362 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:38:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2024-12-02 15:38:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 6751. [2024-12-02 15:38:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6751 states, 6750 states have (on average 1.0887407407407408) internal successors, (7349), 6750 states have internal predecessors, (7349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6751 states to 6751 states and 7349 transitions. [2024-12-02 15:38:17,575 INFO L78 Accepts]: Start accepts. Automaton has 6751 states and 7349 transitions. Word has length 157 [2024-12-02 15:38:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:17,575 INFO L471 AbstractCegarLoop]: Abstraction has 6751 states and 7349 transitions. [2024-12-02 15:38:17,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:17,575 INFO L276 IsEmpty]: Start isEmpty. Operand 6751 states and 7349 transitions. [2024-12-02 15:38:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 15:38:17,576 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:17,576 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:17,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-12-02 15:38:17,576 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:17,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:17,576 INFO L85 PathProgramCache]: Analyzing trace with hash -759982327, now seen corresponding path program 1 times [2024-12-02 15:38:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:17,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838451559] [2024-12-02 15:38:17,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:17,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-12-02 15:38:17,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838451559] [2024-12-02 15:38:17,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838451559] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:17,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:17,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:38:17,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717839749] [2024-12-02 15:38:17,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:17,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:38:17,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:17,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:38:17,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:38:17,656 INFO L87 Difference]: Start difference. First operand 6751 states and 7349 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:17,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:17,775 INFO L93 Difference]: Finished difference Result 8372 states and 9109 transitions. [2024-12-02 15:38:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:38:17,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 157 [2024-12-02 15:38:17,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:17,779 INFO L225 Difference]: With dead ends: 8372 [2024-12-02 15:38:17,779 INFO L226 Difference]: Without dead ends: 6304 [2024-12-02 15:38:17,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:38:17,780 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 272 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:17,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 360 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:38:17,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6304 states. [2024-12-02 15:38:17,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6304 to 6302. [2024-12-02 15:38:17,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6302 states, 6301 states have (on average 1.089985716552928) internal successors, (6868), 6301 states have internal predecessors, (6868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:17,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6302 states to 6302 states and 6868 transitions. [2024-12-02 15:38:17,817 INFO L78 Accepts]: Start accepts. Automaton has 6302 states and 6868 transitions. Word has length 157 [2024-12-02 15:38:17,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:17,817 INFO L471 AbstractCegarLoop]: Abstraction has 6302 states and 6868 transitions. [2024-12-02 15:38:17,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:17,817 INFO L276 IsEmpty]: Start isEmpty. Operand 6302 states and 6868 transitions. [2024-12-02 15:38:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 15:38:17,818 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:17,818 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:17,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-12-02 15:38:17,818 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:17,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:17,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2074292664, now seen corresponding path program 1 times [2024-12-02 15:38:17,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:17,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929291074] [2024-12-02 15:38:17,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:17,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:38:18,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:18,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929291074] [2024-12-02 15:38:18,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929291074] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:38:18,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574630929] [2024-12-02 15:38:18,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:18,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:38:18,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:38:18,875 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:38:18,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-02 15:38:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:19,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-12-02 15:38:19,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:38:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:38:20,330 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:38:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:38:22,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574630929] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:38:22,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:38:22,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 20] total 57 [2024-12-02 15:38:22,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583742202] [2024-12-02 15:38:22,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:38:22,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-02 15:38:22,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:22,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-02 15:38:22,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=2920, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 15:38:22,042 INFO L87 Difference]: Start difference. First operand 6302 states and 6868 transitions. Second operand has 57 states, 57 states have (on average 7.4035087719298245) internal successors, (422), 57 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:25,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:25,312 INFO L93 Difference]: Finished difference Result 10725 states and 11784 transitions. [2024-12-02 15:38:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 15:38:25,312 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 7.4035087719298245) internal successors, (422), 57 states have internal predecessors, (422), 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 160 [2024-12-02 15:38:25,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:25,317 INFO L225 Difference]: With dead ends: 10725 [2024-12-02 15:38:25,317 INFO L226 Difference]: Without dead ends: 10276 [2024-12-02 15:38:25,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=985, Invalid=7571, Unknown=0, NotChecked=0, Total=8556 [2024-12-02 15:38:25,318 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 1838 mSDsluCounter, 7551 mSDsCounter, 0 mSdLazyCounter, 3264 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 7793 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:25,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 7793 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3264 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 15:38:25,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10276 states. [2024-12-02 15:38:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10276 to 6339. [2024-12-02 15:38:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6339 states, 6338 states have (on average 1.0894603976017672) internal successors, (6905), 6338 states have internal predecessors, (6905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6339 states to 6339 states and 6905 transitions. [2024-12-02 15:38:25,364 INFO L78 Accepts]: Start accepts. Automaton has 6339 states and 6905 transitions. Word has length 160 [2024-12-02 15:38:25,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:25,364 INFO L471 AbstractCegarLoop]: Abstraction has 6339 states and 6905 transitions. [2024-12-02 15:38:25,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 7.4035087719298245) internal successors, (422), 57 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:25,365 INFO L276 IsEmpty]: Start isEmpty. Operand 6339 states and 6905 transitions. [2024-12-02 15:38:25,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 15:38:25,366 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:25,366 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:25,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-12-02 15:38:25,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:38:25,566 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:25,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:25,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1128798949, now seen corresponding path program 1 times [2024-12-02 15:38:25,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:25,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023765730] [2024-12-02 15:38:25,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:25,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:38:25,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:25,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023765730] [2024-12-02 15:38:25,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023765730] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:38:25,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682363487] [2024-12-02 15:38:25,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:25,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:38:25,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:38:25,919 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:38:25,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-02 15:38:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:26,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 15:38:26,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:38:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:38:27,498 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:38:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:38:28,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682363487] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:38:28,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:38:28,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 13] total 41 [2024-12-02 15:38:28,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758150654] [2024-12-02 15:38:28,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:38:28,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 15:38:28,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:28,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 15:38:28,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 15:38:28,302 INFO L87 Difference]: Start difference. First operand 6339 states and 6905 transitions. Second operand has 41 states, 41 states have (on average 11.048780487804878) internal successors, (453), 41 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:29,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:29,744 INFO L93 Difference]: Finished difference Result 11673 states and 12829 transitions. [2024-12-02 15:38:29,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:38:29,745 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 11.048780487804878) internal successors, (453), 41 states have internal predecessors, (453), 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 160 [2024-12-02 15:38:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:29,750 INFO L225 Difference]: With dead ends: 11673 [2024-12-02 15:38:29,750 INFO L226 Difference]: Without dead ends: 10639 [2024-12-02 15:38:29,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=679, Invalid=4151, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 15:38:29,752 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 1609 mSDsluCounter, 4522 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 4762 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:29,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 4762 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:38:29,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10639 states. [2024-12-02 15:38:29,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10639 to 7063. [2024-12-02 15:38:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7062 states have (on average 1.0894930614556784) internal successors, (7694), 7062 states have internal predecessors, (7694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 7694 transitions. [2024-12-02 15:38:29,801 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 7694 transitions. Word has length 160 [2024-12-02 15:38:29,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:29,802 INFO L471 AbstractCegarLoop]: Abstraction has 7063 states and 7694 transitions. [2024-12-02 15:38:29,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.048780487804878) internal successors, (453), 41 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:38:29,802 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 7694 transitions. [2024-12-02 15:38:29,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 15:38:29,803 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:29,803 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:29,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-12-02 15:38:30,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:38:30,004 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:30,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:30,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1342834999, now seen corresponding path program 1 times [2024-12-02 15:38:30,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:30,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401486878] [2024-12-02 15:38:30,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:30,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:38:30,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:30,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401486878] [2024-12-02 15:38:30,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401486878] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:38:30,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914008970] [2024-12-02 15:38:30,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:30,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:38:30,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:38:30,587 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:38:30,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-12-02 15:38:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:30,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-12-02 15:38:30,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:38:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:38:34,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:38:38,421 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:38:38,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914008970] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:38:38,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:38:38,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 32, 23] total 68 [2024-12-02 15:38:38,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038105582] [2024-12-02 15:38:38,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:38:38,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-02 15:38:38,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:38,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-02 15:38:38,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=4173, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 15:38:38,423 INFO L87 Difference]: Start difference. First operand 7063 states and 7694 transitions. Second operand has 68 states, 68 states have (on average 6.279411764705882) internal successors, (427), 68 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:39:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:39:29,351 INFO L93 Difference]: Finished difference Result 15791 states and 17314 transitions. [2024-12-02 15:39:29,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 285 states. [2024-12-02 15:39:29,351 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 6.279411764705882) internal successors, (427), 68 states have internal predecessors, (427), 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 160 [2024-12-02 15:39:29,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:39:29,357 INFO L225 Difference]: With dead ends: 15791 [2024-12-02 15:39:29,357 INFO L226 Difference]: Without dead ends: 15238 [2024-12-02 15:39:29,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 269 SyntacticMatches, 2 SemanticMatches, 349 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47420 ImplicationChecksByTransitivity, 42.0s TimeCoverageRelationStatistics Valid=12697, Invalid=110153, Unknown=0, NotChecked=0, Total=122850 [2024-12-02 15:39:29,361 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 6936 mSDsluCounter, 12631 mSDsCounter, 0 mSdLazyCounter, 13623 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6936 SdHoareTripleChecker+Valid, 13073 SdHoareTripleChecker+Invalid, 13740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 13623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:39:29,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6936 Valid, 13073 Invalid, 13740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 13623 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2024-12-02 15:39:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15238 states. [2024-12-02 15:39:29,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15238 to 7183. [2024-12-02 15:39:29,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7183 states, 7182 states have (on average 1.0891116680590365) internal successors, (7822), 7182 states have internal predecessors, (7822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:39:29,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7183 states to 7183 states and 7822 transitions. [2024-12-02 15:39:29,418 INFO L78 Accepts]: Start accepts. Automaton has 7183 states and 7822 transitions. Word has length 160 [2024-12-02 15:39:29,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:39:29,418 INFO L471 AbstractCegarLoop]: Abstraction has 7183 states and 7822 transitions. [2024-12-02 15:39:29,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 6.279411764705882) internal successors, (427), 68 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:39:29,418 INFO L276 IsEmpty]: Start isEmpty. Operand 7183 states and 7822 transitions. [2024-12-02 15:39:29,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 15:39:29,420 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:39:29,420 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:39:29,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-12-02 15:39:29,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2024-12-02 15:39:29,620 INFO L396 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:39:29,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:39:29,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2035470479, now seen corresponding path program 1 times [2024-12-02 15:39:29,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:39:29,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011947633] [2024-12-02 15:39:29,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:39:29,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:39:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:39:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:39:30,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:39:30,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011947633] [2024-12-02 15:39:30,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011947633] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:39:30,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362205000] [2024-12-02 15:39:30,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:39:30,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:39:30,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:39:30,296 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:39:30,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-12-02 15:39:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:39:30,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 15:39:30,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:39:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 15:39:31,190 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:39:31,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362205000] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:39:31,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:39:31,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 29 [2024-12-02 15:39:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138515020] [2024-12-02 15:39:31,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:39:31,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:39:31,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:39:31,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:39:31,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2024-12-02 15:39:31,192 INFO L87 Difference]: Start difference. First operand 7183 states and 7822 transitions. Second operand has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:39:31,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:39:31,561 INFO L93 Difference]: Finished difference Result 9597 states and 10496 transitions. [2024-12-02 15:39:31,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:39:31,561 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 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 160 [2024-12-02 15:39:31,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:39:31,565 INFO L225 Difference]: With dead ends: 9597 [2024-12-02 15:39:31,565 INFO L226 Difference]: Without dead ends: 7674 [2024-12-02 15:39:31,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=1028, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 15:39:31,566 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 211 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:39:31,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2246 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:39:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7674 states. [2024-12-02 15:39:31,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7674 to 7670. [2024-12-02 15:39:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7670 states, 7669 states have (on average 1.0885382709610119) internal successors, (8348), 7669 states have internal predecessors, (8348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:39:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7670 states to 7670 states and 8348 transitions. [2024-12-02 15:39:31,610 INFO L78 Accepts]: Start accepts. Automaton has 7670 states and 8348 transitions. Word has length 160 [2024-12-02 15:39:31,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:39:31,610 INFO L471 AbstractCegarLoop]: Abstraction has 7670 states and 8348 transitions. [2024-12-02 15:39:31,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:39:31,610 INFO L276 IsEmpty]: Start isEmpty. Operand 7670 states and 8348 transitions. [2024-12-02 15:39:31,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 15:39:31,611 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:39:31,612 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:39:31,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-12-02 15:39:31,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:39:31,812 INFO L396 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:39:31,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:39:31,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1645437081, now seen corresponding path program 1 times [2024-12-02 15:39:31,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:39:31,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732791695] [2024-12-02 15:39:31,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:39:31,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:39:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:39:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 29 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:39:32,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:39:32,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732791695] [2024-12-02 15:39:32,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732791695] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:39:32,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218235740] [2024-12-02 15:39:32,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:39:32,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:39:32,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:39:32,496 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:39:32,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a301de22-965a-4f13-a642-c640ba408b87/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-12-02 15:39:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:39:32,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-12-02 15:39:32,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:39:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 29 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:39:36,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:39:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 29 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:39:42,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218235740] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:39:42,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:39:42,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 37, 35] total 85 [2024-12-02 15:39:42,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148408147] [2024-12-02 15:39:42,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:39:42,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-12-02 15:39:42,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:39:42,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-12-02 15:39:42,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=742, Invalid=6398, Unknown=0, NotChecked=0, Total=7140 [2024-12-02 15:39:42,690 INFO L87 Difference]: Start difference. First operand 7670 states and 8348 transitions. Second operand has 85 states, 85 states have (on average 4.823529411764706) internal successors, (410), 85 states have internal predecessors, (410), 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)