./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label52.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eceda023c7394c88c46221fb5ed6b67ae6e1976efca78e0b148b1f17e3b2b45b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:40:57,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:40:57,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:40:57,965 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:40:57,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:40:58,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:40:58,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:40:58,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:40:58,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:40:58,016 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:40:58,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:40:58,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:40:58,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:40:58,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:40:58,019 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:40:58,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:40:58,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:40:58,019 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:40:58,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:40:58,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:40:58,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:40:58,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:40:58,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:40:58,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:40:58,020 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:40:58,020 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:40:58,020 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:40:58,020 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:40:58,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:40:58,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:40:58,021 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:40:58,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:40:58,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:40:58,021 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:40:58,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:40:58,021 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:40:58,021 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:40:58,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:40:58,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:40:58,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:40:58,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:40:58,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:40:58,022 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_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eceda023c7394c88c46221fb5ed6b67ae6e1976efca78e0b148b1f17e3b2b45b [2024-11-13 15:40:58,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:40:58,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:40:58,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:40:58,437 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:40:58,438 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:40:58,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem13_label52.c Unable to find full path for "g++" [2024-11-13 15:41:00,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:41:01,682 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:41:01,683 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/sv-benchmarks/c/eca-rers2012/Problem13_label52.c [2024-11-13 15:41:01,729 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/data/ad7c28dd2/e692e2a3b49e4c9e87b721ccf7283ede/FLAGadc8c966b [2024-11-13 15:41:01,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/data/ad7c28dd2/e692e2a3b49e4c9e87b721ccf7283ede [2024-11-13 15:41:01,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:41:01,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:41:01,768 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:41:01,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:41:01,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:41:01,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:41:01" (1/1) ... [2024-11-13 15:41:01,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2ea6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:01, skipping insertion in model container [2024-11-13 15:41:01,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:41:01" (1/1) ... [2024-11-13 15:41:01,945 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:41:02,338 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_559056d6-842d-485b-93ac-8e80ead9fc43/sv-benchmarks/c/eca-rers2012/Problem13_label52.c[9091,9104] [2024-11-13 15:41:03,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:41:03,640 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:41:03,702 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_559056d6-842d-485b-93ac-8e80ead9fc43/sv-benchmarks/c/eca-rers2012/Problem13_label52.c[9091,9104] [2024-11-13 15:41:04,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:41:04,533 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:41:04,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04 WrapperNode [2024-11-13 15:41:04,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:41:04,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:41:04,540 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:41:04,540 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:41:04,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ... [2024-11-13 15:41:04,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ... [2024-11-13 15:41:05,555 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-13 15:41:05,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:41:05,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:41:05,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:41:05,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:41:05,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ... [2024-11-13 15:41:05,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ... [2024-11-13 15:41:05,809 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ... [2024-11-13 15:41:06,400 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 15:41:06,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ... [2024-11-13 15:41:06,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ... [2024-11-13 15:41:06,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ... [2024-11-13 15:41:06,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ... [2024-11-13 15:41:06,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ... [2024-11-13 15:41:06,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ... [2024-11-13 15:41:07,050 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:41:07,053 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:41:07,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:41:07,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:41:07,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ... [2024-11-13 15:41:07,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:41:07,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:41:07,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:41:07,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:41:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:41:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:41:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:41:07,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:41:07,313 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:41:07,316 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:41:17,664 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-13 15:41:17,664 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:41:17,714 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:41:17,714 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 15:41:17,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:41:17 BoogieIcfgContainer [2024-11-13 15:41:17,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:41:17,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:41:17,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:41:17,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:41:17,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:41:01" (1/3) ... [2024-11-13 15:41:17,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66de90fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:41:17, skipping insertion in model container [2024-11-13 15:41:17,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (2/3) ... [2024-11-13 15:41:17,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66de90fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:41:17, skipping insertion in model container [2024-11-13 15:41:17,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:41:17" (3/3) ... [2024-11-13 15:41:17,739 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label52.c [2024-11-13 15:41:17,759 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:41:17,765 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label52.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 15:41:17,875 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:41:17,889 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;@2a4cc492, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:41:17,890 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:41:17,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:41:17,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 15:41:17,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:41:17,909 INFO L215 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] [2024-11-13 15:41:17,909 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:41:17,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:41:17,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1474291506, now seen corresponding path program 1 times [2024-11-13 15:41:17,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:41:17,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120662578] [2024-11-13 15:41:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:41:17,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:41:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:41:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:41:18,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:41:18,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120662578] [2024-11-13 15:41:18,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120662578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:41:18,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:41:18,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:41:18,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360830421] [2024-11-13 15:41:18,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:41:18,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:41:18,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:41:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:41:19,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:41:19,027 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 4 states, 4 states have (on average 16.0) internal successors, (64), 3 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) [2024-11-13 15:41:30,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:41:30,382 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2024-11-13 15:41:30,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:41:30,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 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 [2024-11-13 15:41:30,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:41:30,416 INFO L225 Difference]: With dead ends: 3829 [2024-11-13 15:41:30,417 INFO L226 Difference]: Without dead ends: 2664 [2024-11-13 15:41:30,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:41:30,428 INFO L432 NwaCegarLoop]: 762 mSDtfsCounter, 2665 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2665 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:41:30,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2665 Valid, 1069 Invalid, 5853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1607 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2024-11-13 15:41:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2024-11-13 15:41:30,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2024-11-13 15:41:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:41:30,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2024-11-13 15:41:30,664 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 64 [2024-11-13 15:41:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:41:30,665 INFO L471 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2024-11-13 15:41:30,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 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) [2024-11-13 15:41:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2024-11-13 15:41:30,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-13 15:41:30,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:41:30,673 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:41:30,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:41:30,674 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:41:30,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:41:30,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1272490012, now seen corresponding path program 1 times [2024-11-13 15:41:30,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:41:30,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335143680] [2024-11-13 15:41:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:41:30,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:41:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:41:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:41:31,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:41:31,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335143680] [2024-11-13 15:41:31,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335143680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:41:31,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:41:31,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:41:31,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239298757] [2024-11-13 15:41:31,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:41:31,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:41:31,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:41:31,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:41:31,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:41:31,351 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:41:42,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:41:42,379 INFO L93 Difference]: Finished difference Result 7866 states and 12670 transitions. [2024-11-13 15:41:42,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:41:42,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2024-11-13 15:41:42,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:41:42,407 INFO L225 Difference]: With dead ends: 7866 [2024-11-13 15:41:42,407 INFO L226 Difference]: Without dead ends: 5992 [2024-11-13 15:41:42,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:41:42,412 INFO L432 NwaCegarLoop]: 894 mSDtfsCounter, 1694 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 5285 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 6127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 5285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:41:42,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1694 Valid, 1070 Invalid, 6127 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [842 Valid, 5285 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2024-11-13 15:41:42,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5992 states. [2024-11-13 15:41:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5992 to 5859. [2024-11-13 15:41:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4453738477296005) internal successors, (8467), 5858 states have internal predecessors, (8467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:41:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8467 transitions. [2024-11-13 15:41:42,585 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8467 transitions. Word has length 189 [2024-11-13 15:41:42,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:41:42,586 INFO L471 AbstractCegarLoop]: Abstraction has 5859 states and 8467 transitions. [2024-11-13 15:41:42,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:41:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8467 transitions. [2024-11-13 15:41:42,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-13 15:41:42,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:41:42,603 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 15:41:42,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:41:42,603 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:41:42,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:41:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1018452695, now seen corresponding path program 1 times [2024-11-13 15:41:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:41:42,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041591004] [2024-11-13 15:41:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:41:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:41:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:41:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 15:41:43,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:41:43,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041591004] [2024-11-13 15:41:43,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041591004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:41:43,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:41:43,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:41:43,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910690976] [2024-11-13 15:41:43,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:41:43,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:41:43,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:41:43,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:41:43,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:41:43,194 INFO L87 Difference]: Start difference. First operand 5859 states and 8467 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:41:49,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:41:49,794 INFO L93 Difference]: Finished difference Result 15687 states and 23393 transitions. [2024-11-13 15:41:49,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:41:49,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 231 [2024-11-13 15:41:49,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:41:49,881 INFO L225 Difference]: With dead ends: 15687 [2024-11-13 15:41:49,882 INFO L226 Difference]: Without dead ends: 10617 [2024-11-13 15:41:49,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:41:49,893 INFO L432 NwaCegarLoop]: 785 mSDtfsCounter, 919 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:41:49,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 918 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-13 15:41:49,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10617 states. [2024-11-13 15:41:50,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10617 to 10608. [2024-11-13 15:41:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3553313849344772) internal successors, (14376), 10607 states have internal predecessors, (14376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:41:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14376 transitions. [2024-11-13 15:41:50,155 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14376 transitions. Word has length 231 [2024-11-13 15:41:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:41:50,157 INFO L471 AbstractCegarLoop]: Abstraction has 10608 states and 14376 transitions. [2024-11-13 15:41:50,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:41:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14376 transitions. [2024-11-13 15:41:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-13 15:41:50,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:41:50,166 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:41:50,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:41:50,166 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:41:50,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:41:50,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2043984442, now seen corresponding path program 1 times [2024-11-13 15:41:50,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:41:50,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021523128] [2024-11-13 15:41:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:41:50,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:41:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:41:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 15:41:50,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:41:50,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021523128] [2024-11-13 15:41:50,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021523128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:41:50,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:41:50,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:41:50,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908737574] [2024-11-13 15:41:50,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:41:50,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:41:50,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:41:50,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:41:50,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:41:50,617 INFO L87 Difference]: Start difference. First operand 10608 states and 14376 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:41:55,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:41:55,647 INFO L93 Difference]: Finished difference Result 29087 states and 40058 transitions. [2024-11-13 15:41:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:41:55,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 245 [2024-11-13 15:41:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:41:55,738 INFO L225 Difference]: With dead ends: 29087 [2024-11-13 15:41:55,739 INFO L226 Difference]: Without dead ends: 19268 [2024-11-13 15:41:55,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:41:55,755 INFO L432 NwaCegarLoop]: 839 mSDtfsCounter, 886 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:41:55,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 986 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-13 15:41:55,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19268 states. [2024-11-13 15:41:56,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19268 to 18479. [2024-11-13 15:41:56,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18479 states, 18478 states have (on average 1.2594977811451455) internal successors, (23273), 18478 states have internal predecessors, (23273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:41:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18479 states to 18479 states and 23273 transitions. [2024-11-13 15:41:56,209 INFO L78 Accepts]: Start accepts. Automaton has 18479 states and 23273 transitions. Word has length 245 [2024-11-13 15:41:56,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:41:56,210 INFO L471 AbstractCegarLoop]: Abstraction has 18479 states and 23273 transitions. [2024-11-13 15:41:56,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:41:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 18479 states and 23273 transitions. [2024-11-13 15:41:56,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-13 15:41:56,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:41:56,216 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:41:56,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:41:56,217 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:41:56,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:41:56,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1669838750, now seen corresponding path program 1 times [2024-11-13 15:41:56,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:41:56,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689788465] [2024-11-13 15:41:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:41:56,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:41:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:41:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:41:56,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:41:56,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689788465] [2024-11-13 15:41:56,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689788465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:41:56,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:41:56,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:41:56,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990136984] [2024-11-13 15:41:56,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:41:56,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:41:56,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:41:56,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:41:56,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:41:56,686 INFO L87 Difference]: Start difference. First operand 18479 states and 23273 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:42:07,678 INFO L93 Difference]: Finished difference Result 48973 states and 63007 transitions. [2024-11-13 15:42:07,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:42:07,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2024-11-13 15:42:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:42:07,779 INFO L225 Difference]: With dead ends: 48973 [2024-11-13 15:42:07,779 INFO L226 Difference]: Without dead ends: 31283 [2024-11-13 15:42:07,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:42:07,800 INFO L432 NwaCegarLoop]: 640 mSDtfsCounter, 1735 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6141 mSolverCounterSat, 1129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 7270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1129 IncrementalHoareTripleChecker+Valid, 6141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:42:07,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 841 Invalid, 7270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1129 Valid, 6141 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2024-11-13 15:42:07,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31283 states. [2024-11-13 15:42:08,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31283 to 30374. [2024-11-13 15:42:08,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30374 states, 30373 states have (on average 1.2605274421361077) internal successors, (38286), 30373 states have internal predecessors, (38286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:08,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30374 states to 30374 states and 38286 transitions. [2024-11-13 15:42:08,371 INFO L78 Accepts]: Start accepts. Automaton has 30374 states and 38286 transitions. Word has length 261 [2024-11-13 15:42:08,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:42:08,372 INFO L471 AbstractCegarLoop]: Abstraction has 30374 states and 38286 transitions. [2024-11-13 15:42:08,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:08,373 INFO L276 IsEmpty]: Start isEmpty. Operand 30374 states and 38286 transitions. [2024-11-13 15:42:08,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-13 15:42:08,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:42:08,380 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-13 15:42:08,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:42:08,381 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:42:08,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:08,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1421653317, now seen corresponding path program 1 times [2024-11-13 15:42:08,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:08,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780004462] [2024-11-13 15:42:08,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:08,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:42:09,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:09,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780004462] [2024-11-13 15:42:09,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780004462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:42:09,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:42:09,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:42:09,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270422410] [2024-11-13 15:42:09,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:42:09,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:42:09,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:09,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:42:09,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:42:09,179 INFO L87 Difference]: Start difference. First operand 30374 states and 38286 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 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) [2024-11-13 15:42:16,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:42:16,041 INFO L93 Difference]: Finished difference Result 89095 states and 112689 transitions. [2024-11-13 15:42:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:42:16,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 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 271 [2024-11-13 15:42:16,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:42:16,220 INFO L225 Difference]: With dead ends: 89095 [2024-11-13 15:42:16,220 INFO L226 Difference]: Without dead ends: 59510 [2024-11-13 15:42:16,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:42:16,263 INFO L432 NwaCegarLoop]: 894 mSDtfsCounter, 817 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 897 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:42:16,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 1011 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [897 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-13 15:42:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59510 states. [2024-11-13 15:42:17,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59510 to 57136. [2024-11-13 15:42:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57136 states, 57135 states have (on average 1.2027128730200403) internal successors, (68717), 57135 states have internal predecessors, (68717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57136 states to 57136 states and 68717 transitions. [2024-11-13 15:42:17,289 INFO L78 Accepts]: Start accepts. Automaton has 57136 states and 68717 transitions. Word has length 271 [2024-11-13 15:42:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:42:17,290 INFO L471 AbstractCegarLoop]: Abstraction has 57136 states and 68717 transitions. [2024-11-13 15:42:17,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 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) [2024-11-13 15:42:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 57136 states and 68717 transitions. [2024-11-13 15:42:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-13 15:42:17,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:42:17,308 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 15:42:17,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:42:17,309 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:42:17,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash 792076322, now seen corresponding path program 1 times [2024-11-13 15:42:17,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:17,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541041408] [2024-11-13 15:42:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:17,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-13 15:42:18,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:18,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541041408] [2024-11-13 15:42:18,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541041408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:42:18,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:42:18,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:42:18,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792849761] [2024-11-13 15:42:18,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:42:18,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:42:18,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:18,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:42:18,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:42:18,386 INFO L87 Difference]: Start difference. First operand 57136 states and 68717 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:42:27,907 INFO L93 Difference]: Finished difference Result 121375 states and 145200 transitions. [2024-11-13 15:42:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:42:27,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 361 [2024-11-13 15:42:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:42:27,987 INFO L225 Difference]: With dead ends: 121375 [2024-11-13 15:42:27,987 INFO L226 Difference]: Without dead ends: 65028 [2024-11-13 15:42:28,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:42:28,028 INFO L432 NwaCegarLoop]: 929 mSDtfsCounter, 1636 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 4337 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 5040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 4337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:42:28,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1636 Valid, 1077 Invalid, 5040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 4337 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-11-13 15:42:28,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65028 states. [2024-11-13 15:42:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65028 to 65006. [2024-11-13 15:42:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65006 states, 65005 states have (on average 1.1791554495808014) internal successors, (76651), 65005 states have internal predecessors, (76651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65006 states to 65006 states and 76651 transitions. [2024-11-13 15:42:29,243 INFO L78 Accepts]: Start accepts. Automaton has 65006 states and 76651 transitions. Word has length 361 [2024-11-13 15:42:29,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:42:29,245 INFO L471 AbstractCegarLoop]: Abstraction has 65006 states and 76651 transitions. [2024-11-13 15:42:29,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:29,245 INFO L276 IsEmpty]: Start isEmpty. Operand 65006 states and 76651 transitions. [2024-11-13 15:42:29,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-13 15:42:29,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:42:29,258 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 15:42:29,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:42:29,258 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:42:29,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:29,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1921136025, now seen corresponding path program 1 times [2024-11-13 15:42:29,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:29,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540808502] [2024-11-13 15:42:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:29,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-13 15:42:29,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:29,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540808502] [2024-11-13 15:42:29,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540808502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:42:29,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:42:29,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:42:29,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359897721] [2024-11-13 15:42:29,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:42:29,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:42:29,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:29,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:42:29,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:42:29,553 INFO L87 Difference]: Start difference. First operand 65006 states and 76651 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 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) [2024-11-13 15:42:35,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:42:35,176 INFO L93 Difference]: Finished difference Result 135498 states and 158728 transitions. [2024-11-13 15:42:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:42:35,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 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 381 [2024-11-13 15:42:35,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:42:35,245 INFO L225 Difference]: With dead ends: 135498 [2024-11-13 15:42:35,245 INFO L226 Difference]: Without dead ends: 67341 [2024-11-13 15:42:35,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:42:35,282 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 1034 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:42:35,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 1644 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-13 15:42:35,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67341 states. [2024-11-13 15:42:36,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67341 to 63394. [2024-11-13 15:42:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63394 states, 63393 states have (on average 1.1207073336172764) internal successors, (71045), 63393 states have internal predecessors, (71045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:36,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63394 states to 63394 states and 71045 transitions. [2024-11-13 15:42:36,444 INFO L78 Accepts]: Start accepts. Automaton has 63394 states and 71045 transitions. Word has length 381 [2024-11-13 15:42:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:42:36,445 INFO L471 AbstractCegarLoop]: Abstraction has 63394 states and 71045 transitions. [2024-11-13 15:42:36,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 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) [2024-11-13 15:42:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 63394 states and 71045 transitions. [2024-11-13 15:42:36,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-13 15:42:36,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:42:36,457 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:36,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:42:36,458 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:42:36,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:36,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1045135527, now seen corresponding path program 1 times [2024-11-13 15:42:36,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:36,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717069052] [2024-11-13 15:42:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:36,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 292 proven. 113 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-13 15:42:39,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:39,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717069052] [2024-11-13 15:42:39,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717069052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:42:39,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251948847] [2024-11-13 15:42:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:39,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:39,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:42:39,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:42:39,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:42:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:39,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:42:39,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:42:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-13 15:42:39,908 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:42:39,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251948847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:42:39,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:42:39,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-13 15:42:39,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718989030] [2024-11-13 15:42:39,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:42:39,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:42:39,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:39,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:42:39,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:42:39,912 INFO L87 Difference]: Start difference. First operand 63394 states and 71045 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:45,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:42:45,456 INFO L93 Difference]: Finished difference Result 124422 states and 139421 transitions. [2024-11-13 15:42:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:42:45,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 390 [2024-11-13 15:42:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:42:45,536 INFO L225 Difference]: With dead ends: 124422 [2024-11-13 15:42:45,536 INFO L226 Difference]: Without dead ends: 61817 [2024-11-13 15:42:45,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:42:45,569 INFO L432 NwaCegarLoop]: 1341 mSDtfsCounter, 1113 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2447 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:42:45,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1420 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2447 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-13 15:42:45,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61817 states. [2024-11-13 15:42:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61817 to 61816. [2024-11-13 15:42:46,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61816 states, 61815 states have (on average 1.0949607700396344) internal successors, (67685), 61815 states have internal predecessors, (67685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61816 states to 61816 states and 67685 transitions. [2024-11-13 15:42:46,651 INFO L78 Accepts]: Start accepts. Automaton has 61816 states and 67685 transitions. Word has length 390 [2024-11-13 15:42:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:42:46,652 INFO L471 AbstractCegarLoop]: Abstraction has 61816 states and 67685 transitions. [2024-11-13 15:42:46,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 61816 states and 67685 transitions. [2024-11-13 15:42:46,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-13 15:42:46,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:42:46,661 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:46,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:42:46,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:46,862 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:42:46,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:46,863 INFO L85 PathProgramCache]: Analyzing trace with hash -931802601, now seen corresponding path program 1 times [2024-11-13 15:42:46,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:46,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927004418] [2024-11-13 15:42:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:46,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 576 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-13 15:42:47,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:47,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927004418] [2024-11-13 15:42:47,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927004418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:42:47,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:42:47,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:42:47,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807070517] [2024-11-13 15:42:47,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:42:47,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:42:47,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:47,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:42:47,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:42:47,605 INFO L87 Difference]: Start difference. First operand 61816 states and 67685 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:54,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:42:54,191 INFO L93 Difference]: Finished difference Result 144105 states and 158930 transitions. [2024-11-13 15:42:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:42:54,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 420 [2024-11-13 15:42:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:42:54,290 INFO L225 Difference]: With dead ends: 144105 [2024-11-13 15:42:54,290 INFO L226 Difference]: Without dead ends: 82287 [2024-11-13 15:42:54,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:42:54,325 INFO L432 NwaCegarLoop]: 773 mSDtfsCounter, 893 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 942 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 942 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:42:54,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 856 Invalid, 3351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [942 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-13 15:42:54,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82287 states. [2024-11-13 15:42:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82287 to 82271. [2024-11-13 15:42:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82271 states, 82270 states have (on average 1.095320286860338) internal successors, (90112), 82270 states have internal predecessors, (90112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82271 states to 82271 states and 90112 transitions. [2024-11-13 15:42:55,627 INFO L78 Accepts]: Start accepts. Automaton has 82271 states and 90112 transitions. Word has length 420 [2024-11-13 15:42:55,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:42:55,628 INFO L471 AbstractCegarLoop]: Abstraction has 82271 states and 90112 transitions. [2024-11-13 15:42:55,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:55,628 INFO L276 IsEmpty]: Start isEmpty. Operand 82271 states and 90112 transitions. [2024-11-13 15:42:55,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-11-13 15:42:55,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:42:55,638 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 15:42:55,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:42:55,638 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:42:55,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:55,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1254029308, now seen corresponding path program 1 times [2024-11-13 15:42:55,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:55,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736072618] [2024-11-13 15:42:55,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:55,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-13 15:42:56,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:56,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736072618] [2024-11-13 15:42:56,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736072618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:42:56,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:42:56,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:42:56,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98257388] [2024-11-13 15:42:56,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:42:56,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:42:56,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:56,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:42:56,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:42:56,542 INFO L87 Difference]: Start difference. First operand 82271 states and 90112 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:03,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:43:03,558 INFO L93 Difference]: Finished difference Result 182655 states and 201241 transitions. [2024-11-13 15:43:03,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:43:03,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 458 [2024-11-13 15:43:03,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:43:03,677 INFO L225 Difference]: With dead ends: 182655 [2024-11-13 15:43:03,678 INFO L226 Difference]: Without dead ends: 101173 [2024-11-13 15:43:03,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:43:03,723 INFO L432 NwaCegarLoop]: 1726 mSDtfsCounter, 788 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 3210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:43:03,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1867 Invalid, 3210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-13 15:43:03,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101173 states. [2024-11-13 15:43:05,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101173 to 100367. [2024-11-13 15:43:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100367 states, 100366 states have (on average 1.0820795887053385) internal successors, (108604), 100366 states have internal predecessors, (108604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100367 states to 100367 states and 108604 transitions. [2024-11-13 15:43:05,181 INFO L78 Accepts]: Start accepts. Automaton has 100367 states and 108604 transitions. Word has length 458 [2024-11-13 15:43:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:43:05,182 INFO L471 AbstractCegarLoop]: Abstraction has 100367 states and 108604 transitions. [2024-11-13 15:43:05,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 100367 states and 108604 transitions. [2024-11-13 15:43:05,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-13 15:43:05,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:43:05,196 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 15:43:05,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 15:43:05,196 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:43:05,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:43:05,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1713442316, now seen corresponding path program 1 times [2024-11-13 15:43:05,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:43:05,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388929870] [2024-11-13 15:43:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:05,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:43:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 364 proven. 110 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-13 15:43:07,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:43:07,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388929870] [2024-11-13 15:43:07,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388929870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:43:07,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371195208] [2024-11-13 15:43:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:07,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:43:07,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:43:07,364 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:43:07,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:43:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:07,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:43:07,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:43:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-13 15:43:08,041 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:43:08,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371195208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:43:08,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:43:08,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-13 15:43:08,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545046571] [2024-11-13 15:43:08,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:43:08,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:43:08,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:08,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:43:08,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:43:08,044 INFO L87 Difference]: Start difference. First operand 100367 states and 108604 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:43:13,425 INFO L93 Difference]: Finished difference Result 208577 states and 226187 transitions. [2024-11-13 15:43:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:43:13,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 494 [2024-11-13 15:43:13,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:43:13,534 INFO L225 Difference]: With dead ends: 208577 [2024-11-13 15:43:13,534 INFO L226 Difference]: Without dead ends: 108999 [2024-11-13 15:43:13,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:43:13,583 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 1125 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 3032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:43:13,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 360 Invalid, 3032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 15:43:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108999 states. [2024-11-13 15:43:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108999 to 108999. [2024-11-13 15:43:15,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108999 states, 108998 states have (on average 1.074038055744142) internal successors, (117068), 108998 states have internal predecessors, (117068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108999 states to 108999 states and 117068 transitions. [2024-11-13 15:43:15,542 INFO L78 Accepts]: Start accepts. Automaton has 108999 states and 117068 transitions. Word has length 494 [2024-11-13 15:43:15,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:43:15,545 INFO L471 AbstractCegarLoop]: Abstraction has 108999 states and 117068 transitions. [2024-11-13 15:43:15,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:15,545 INFO L276 IsEmpty]: Start isEmpty. Operand 108999 states and 117068 transitions. [2024-11-13 15:43:15,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2024-11-13 15:43:15,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:43:15,565 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2024-11-13 15:43:15,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:43:15,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:43:15,766 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:43:15,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:43:15,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1370354533, now seen corresponding path program 1 times [2024-11-13 15:43:15,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:43:15,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144801339] [2024-11-13 15:43:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:15,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:43:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 364 proven. 110 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-13 15:43:18,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:43:18,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144801339] [2024-11-13 15:43:18,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144801339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:43:18,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900352374] [2024-11-13 15:43:18,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:18,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:43:18,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:43:18,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:43:18,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:43:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:18,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:43:18,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:43:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-13 15:43:18,818 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:43:18,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900352374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:43:18,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:43:18,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-13 15:43:18,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130795623] [2024-11-13 15:43:18,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:43:18,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:43:18,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:18,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:43:18,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:43:18,823 INFO L87 Difference]: Start difference. First operand 108999 states and 117068 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:25,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:43:25,567 INFO L93 Difference]: Finished difference Result 261278 states and 280825 transitions. [2024-11-13 15:43:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:43:25,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 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 510 [2024-11-13 15:43:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:43:25,719 INFO L225 Difference]: With dead ends: 261278 [2024-11-13 15:43:25,719 INFO L226 Difference]: Without dead ends: 142031 [2024-11-13 15:43:25,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:43:25,760 INFO L432 NwaCegarLoop]: 1616 mSDtfsCounter, 892 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 3251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:43:25,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1727 Invalid, 3251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-13 15:43:25,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142031 states. [2024-11-13 15:43:27,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142031 to 134946. [2024-11-13 15:43:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134946 states, 134945 states have (on average 1.0621364259513135) internal successors, (143330), 134945 states have internal predecessors, (143330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134946 states to 134946 states and 143330 transitions. [2024-11-13 15:43:28,322 INFO L78 Accepts]: Start accepts. Automaton has 134946 states and 143330 transitions. Word has length 510 [2024-11-13 15:43:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:43:28,322 INFO L471 AbstractCegarLoop]: Abstraction has 134946 states and 143330 transitions. [2024-11-13 15:43:28,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:28,323 INFO L276 IsEmpty]: Start isEmpty. Operand 134946 states and 143330 transitions. [2024-11-13 15:43:28,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-11-13 15:43:28,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:43:28,340 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:43:28,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:43:28,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 15:43:28,541 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:43:28,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:43:28,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1728929232, now seen corresponding path program 1 times [2024-11-13 15:43:28,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:43:28,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858631764] [2024-11-13 15:43:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:28,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:43:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 288 proven. 110 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-13 15:43:31,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:43:31,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858631764] [2024-11-13 15:43:31,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858631764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:43:31,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112281680] [2024-11-13 15:43:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:31,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:43:31,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:43:31,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:43:31,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:43:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:31,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:43:31,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:43:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-13 15:43:33,761 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:43:33,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112281680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:43:33,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:43:33,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-13 15:43:33,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882898928] [2024-11-13 15:43:33,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:43:33,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:43:33,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:43:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:43:33,765 INFO L87 Difference]: Start difference. First operand 134946 states and 143330 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:40,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:43:40,412 INFO L93 Difference]: Finished difference Result 277773 states and 295022 transitions. [2024-11-13 15:43:40,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:43:40,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 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 529 [2024-11-13 15:43:40,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:43:40,585 INFO L225 Difference]: With dead ends: 277773 [2024-11-13 15:43:40,586 INFO L226 Difference]: Without dead ends: 142037 [2024-11-13 15:43:40,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:43:40,623 INFO L432 NwaCegarLoop]: 928 mSDtfsCounter, 543 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:43:40,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1048 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-13 15:43:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142037 states. [2024-11-13 15:43:42,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142037 to 142027. [2024-11-13 15:43:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142027 states, 142026 states have (on average 1.0559545435342825) internal successors, (149973), 142026 states have internal predecessors, (149973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:42,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142027 states to 142027 states and 149973 transitions. [2024-11-13 15:43:42,634 INFO L78 Accepts]: Start accepts. Automaton has 142027 states and 149973 transitions. Word has length 529 [2024-11-13 15:43:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:43:42,635 INFO L471 AbstractCegarLoop]: Abstraction has 142027 states and 149973 transitions. [2024-11-13 15:43:42,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 142027 states and 149973 transitions. [2024-11-13 15:43:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-11-13 15:43:42,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:43:42,654 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 15:43:42,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 15:43:42,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:43:42,855 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:43:42,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:43:42,856 INFO L85 PathProgramCache]: Analyzing trace with hash 713931436, now seen corresponding path program 1 times [2024-11-13 15:43:42,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:43:42,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967044045] [2024-11-13 15:43:42,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:42,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:43:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2024-11-13 15:43:43,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:43:43,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967044045] [2024-11-13 15:43:43,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967044045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:43:43,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:43:43,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:43:43,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823100228] [2024-11-13 15:43:43,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:43:43,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:43:43,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:43,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:43:43,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:43:43,745 INFO L87 Difference]: Start difference. First operand 142027 states and 149973 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:47,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:43:47,434 INFO L93 Difference]: Finished difference Result 282464 states and 298211 transitions. [2024-11-13 15:43:47,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:43:47,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 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 549 [2024-11-13 15:43:47,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:43:47,574 INFO L225 Difference]: With dead ends: 282464 [2024-11-13 15:43:47,574 INFO L226 Difference]: Without dead ends: 141226 [2024-11-13 15:43:47,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:43:47,638 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 1486 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:43:47,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 254 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 15:43:48,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141226 states. [2024-11-13 15:43:49,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141226 to 141225. [2024-11-13 15:43:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141225 states, 141224 states have (on average 1.0551605959327026) internal successors, (149014), 141224 states have internal predecessors, (149014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141225 states to 141225 states and 149014 transitions. [2024-11-13 15:43:49,994 INFO L78 Accepts]: Start accepts. Automaton has 141225 states and 149014 transitions. Word has length 549 [2024-11-13 15:43:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:43:49,995 INFO L471 AbstractCegarLoop]: Abstraction has 141225 states and 149014 transitions. [2024-11-13 15:43:49,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 141225 states and 149014 transitions. [2024-11-13 15:43:50,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2024-11-13 15:43:50,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:43:50,006 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 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] [2024-11-13 15:43:50,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 15:43:50,006 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:43:50,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:43:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2051592450, now seen corresponding path program 1 times [2024-11-13 15:43:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:43:50,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611830102] [2024-11-13 15:43:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:50,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:43:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-13 15:43:50,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:43:50,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611830102] [2024-11-13 15:43:50,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611830102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:43:50,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:43:50,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:43:50,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944608036] [2024-11-13 15:43:50,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:43:50,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:43:50,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:43:50,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:43:50,993 INFO L87 Difference]: Start difference. First operand 141225 states and 149014 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:55,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:43:55,528 INFO L93 Difference]: Finished difference Result 282452 states and 298078 transitions. [2024-11-13 15:43:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:43:55,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 563 [2024-11-13 15:43:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:43:55,673 INFO L225 Difference]: With dead ends: 282452 [2024-11-13 15:43:55,673 INFO L226 Difference]: Without dead ends: 142016 [2024-11-13 15:43:55,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:43:55,713 INFO L432 NwaCegarLoop]: 1633 mSDtfsCounter, 609 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:43:55,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1749 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-13 15:43:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142016 states. [2024-11-13 15:43:57,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142016 to 142012. [2024-11-13 15:43:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142012 states, 142011 states have (on average 1.055037990014858) internal successors, (149827), 142011 states have internal predecessors, (149827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142012 states to 142012 states and 149827 transitions. [2024-11-13 15:43:57,329 INFO L78 Accepts]: Start accepts. Automaton has 142012 states and 149827 transitions. Word has length 563 [2024-11-13 15:43:57,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:43:57,329 INFO L471 AbstractCegarLoop]: Abstraction has 142012 states and 149827 transitions. [2024-11-13 15:43:57,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:43:57,330 INFO L276 IsEmpty]: Start isEmpty. Operand 142012 states and 149827 transitions. [2024-11-13 15:43:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2024-11-13 15:43:57,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:43:57,343 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:43:57,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 15:43:57,343 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:43:57,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:43:57,344 INFO L85 PathProgramCache]: Analyzing trace with hash -349880152, now seen corresponding path program 1 times [2024-11-13 15:43:57,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:43:57,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273000575] [2024-11-13 15:43:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:57,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:43:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 938 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-13 15:43:58,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:43:58,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273000575] [2024-11-13 15:43:58,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273000575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:43:58,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:43:58,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:43:58,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855611373] [2024-11-13 15:43:58,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:43:58,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:43:58,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:58,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:43:58,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:43:58,242 INFO L87 Difference]: Start difference. First operand 142012 states and 149827 transitions. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 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)