./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label59.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 e95469d39d3368d14177394b02d3829b8d37dd10304149f6e91cf64fc01c6cbc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:05:59,611 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:05:59,718 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:05:59,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:05:59,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:05:59,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:05:59,792 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:05:59,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:05:59,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:05:59,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:05:59,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:05:59,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:05:59,798 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:05:59,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:05:59,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:05:59,800 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:05:59,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:05:59,801 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:05:59,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:05:59,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:05:59,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:05:59,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:05:59,809 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:05:59,810 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:05:59,810 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:05:59,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:05:59,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:05:59,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:05:59,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:05:59,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:05:59,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:05:59,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:05:59,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:05:59,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:05:59,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:05:59,817 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:05:59,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:05:59,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:05:59,818 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:05:59,818 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e95469d39d3368d14177394b02d3829b8d37dd10304149f6e91cf64fc01c6cbc [2023-11-06 22:06:00,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:06:00,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:06:00,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:06:00,239 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:06:00,240 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:06:00,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/eca-rers2012/Problem13_label59.c [2023-11-06 22:06:03,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:06:04,385 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:06:04,386 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/sv-benchmarks/c/eca-rers2012/Problem13_label59.c [2023-11-06 22:06:04,431 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/data/a7fbe01b1/322fda2ef5314a4da2c0bf667bc7d1f1/FLAG937fc1060 [2023-11-06 22:06:04,452 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/data/a7fbe01b1/322fda2ef5314a4da2c0bf667bc7d1f1 [2023-11-06 22:06:04,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:06:04,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:06:04,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:06:04,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:06:04,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:06:04,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:06:04" (1/1) ... [2023-11-06 22:06:04,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391055e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:04, skipping insertion in model container [2023-11-06 22:06:04,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:06:04" (1/1) ... [2023-11-06 22:06:04,707 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:06:05,094 WARN L240 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_c6afc709-e76c-43da-9461-b1887c64c894/sv-benchmarks/c/eca-rers2012/Problem13_label59.c[6607,6620] [2023-11-06 22:06:06,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:06:06,495 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:06:06,544 WARN L240 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_c6afc709-e76c-43da-9461-b1887c64c894/sv-benchmarks/c/eca-rers2012/Problem13_label59.c[6607,6620] [2023-11-06 22:06:07,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:06:07,365 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:06:07,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07 WrapperNode [2023-11-06 22:06:07,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:06:07,368 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:06:07,368 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:06:07,368 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:06:07,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:07,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:08,263 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2023-11-06 22:06:08,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:06:08,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:06:08,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:06:08,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:06:08,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:08,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:08,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:08,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:09,016 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:09,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:09,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:09,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:09,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:06:09,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:06:09,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:06:09,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:06:09,342 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:09,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:06:09,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:09,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:09,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:06:09,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:06:09,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:06:09,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:06:09,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:06:09,539 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:06:09,542 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:06:17,530 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:06:17,552 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:06:17,552 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:06:17,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:06:17 BoogieIcfgContainer [2023-11-06 22:06:17,557 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:06:17,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:06:17,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:06:17,564 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:06:17,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:06:04" (1/3) ... [2023-11-06 22:06:17,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36250ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:06:17, skipping insertion in model container [2023-11-06 22:06:17,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (2/3) ... [2023-11-06 22:06:17,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36250ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:06:17, skipping insertion in model container [2023-11-06 22:06:17,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:06:17" (3/3) ... [2023-11-06 22:06:17,568 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label59.c [2023-11-06 22:06:17,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:06:17,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:06:17,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:06:17,695 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@81991c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:06:17,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:06:17,707 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) [2023-11-06 22:06:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-06 22:06:17,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:17,719 INFO L195 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] [2023-11-06 22:06:17,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:17,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash 291089130, now seen corresponding path program 1 times [2023-11-06 22:06:17,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:17,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237020450] [2023-11-06 22:06:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:17,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:18,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:18,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237020450] [2023-11-06 22:06:18,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237020450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:18,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:18,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:06:18,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236044905] [2023-11-06 22:06:18,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:18,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:18,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:18,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:18,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:18,406 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 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:26,314 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2023-11-06 22:06:26,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:26,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-11-06 22:06:26,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:26,407 INFO L225 Difference]: With dead ends: 3160 [2023-11-06 22:06:26,410 INFO L226 Difference]: Without dead ends: 1983 [2023-11-06 22:06:26,438 INFO L412 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 [2023-11-06 22:06:26,444 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1057 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:26,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-11-06 22:06:26,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2023-11-06 22:06:26,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2023-11-06 22:06:26,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2023-11-06 22:06:26,621 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 46 [2023-11-06 22:06:26,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:26,622 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2023-11-06 22:06:26,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:26,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2023-11-06 22:06:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 22:06:26,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:26,629 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:26,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:06:26,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:26,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:26,631 INFO L85 PathProgramCache]: Analyzing trace with hash -928496590, now seen corresponding path program 1 times [2023-11-06 22:06:26,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:26,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360677078] [2023-11-06 22:06:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:26,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:26,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:26,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360677078] [2023-11-06 22:06:26,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360677078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:26,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:26,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:06:26,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969827635] [2023-11-06 22:06:26,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:26,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:26,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:26,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:26,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:26,945 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:32,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:32,716 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2023-11-06 22:06:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:32,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-11-06 22:06:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:32,744 INFO L225 Difference]: With dead ends: 5456 [2023-11-06 22:06:32,744 INFO L226 Difference]: Without dead ends: 3528 [2023-11-06 22:06:32,749 INFO L412 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 [2023-11-06 22:06:32,751 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:32,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-06 22:06:32,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2023-11-06 22:06:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2023-11-06 22:06:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2023-11-06 22:06:32,855 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 111 [2023-11-06 22:06:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:32,858 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2023-11-06 22:06:32,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:32,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2023-11-06 22:06:32,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-06 22:06:32,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:32,868 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:32,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:06:32,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:32,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2127816963, now seen corresponding path program 1 times [2023-11-06 22:06:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:32,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450953304] [2023-11-06 22:06:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:32,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:33,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:33,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450953304] [2023-11-06 22:06:33,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450953304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:33,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:33,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:06:33,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771082496] [2023-11-06 22:06:33,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:33,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:33,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:33,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:33,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:33,242 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:38,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:38,268 INFO L93 Difference]: Finished difference Result 10234 states and 16098 transitions. [2023-11-06 22:06:38,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:38,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2023-11-06 22:06:38,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:38,313 INFO L225 Difference]: With dead ends: 10234 [2023-11-06 22:06:38,314 INFO L226 Difference]: Without dead ends: 6710 [2023-11-06 22:06:38,320 INFO L412 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 [2023-11-06 22:06:38,321 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 973 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:38,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 852 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-06 22:06:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6710 states. [2023-11-06 22:06:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6710 to 6700. [2023-11-06 22:06:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2023-11-06 22:06:38,513 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 117 [2023-11-06 22:06:38,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:38,519 INFO L495 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2023-11-06 22:06:38,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2023-11-06 22:06:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-06 22:06:38,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:38,525 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:38,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:06:38,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:38,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:38,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1371058456, now seen corresponding path program 1 times [2023-11-06 22:06:38,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:38,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506385471] [2023-11-06 22:06:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:38,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:38,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:38,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506385471] [2023-11-06 22:06:38,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506385471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:38,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:38,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:06:38,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173560973] [2023-11-06 22:06:38,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:38,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:38,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:38,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:38,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:38,857 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:44,642 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2023-11-06 22:06:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:44,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-11-06 22:06:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:44,702 INFO L225 Difference]: With dead ends: 17443 [2023-11-06 22:06:44,702 INFO L226 Difference]: Without dead ends: 10745 [2023-11-06 22:06:44,713 INFO L412 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 [2023-11-06 22:06:44,724 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:44,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-06 22:06:44,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2023-11-06 22:06:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2023-11-06 22:06:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2023-11-06 22:06:45,005 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 147 [2023-11-06 22:06:45,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:45,007 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2023-11-06 22:06:45,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2023-11-06 22:06:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 22:06:45,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:45,012 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:45,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:06:45,013 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:45,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:45,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2110509215, now seen corresponding path program 1 times [2023-11-06 22:06:45,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:45,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752711072] [2023-11-06 22:06:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:45,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:45,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:45,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752711072] [2023-11-06 22:06:45,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752711072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:45,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:45,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:06:45,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116964346] [2023-11-06 22:06:45,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:45,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:45,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:45,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:45,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:45,620 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:50,164 INFO L93 Difference]: Finished difference Result 20549 states and 28119 transitions. [2023-11-06 22:06:50,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:50,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-11-06 22:06:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:50,207 INFO L225 Difference]: With dead ends: 20549 [2023-11-06 22:06:50,207 INFO L226 Difference]: Without dead ends: 10669 [2023-11-06 22:06:50,220 INFO L412 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 [2023-11-06 22:06:50,221 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:50,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1212 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-06 22:06:50,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2023-11-06 22:06:50,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 10669. [2023-11-06 22:06:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3539557555305586) internal successors, (14444), 10668 states have internal predecessors, (14444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:50,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14444 transitions. [2023-11-06 22:06:50,493 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14444 transitions. Word has length 157 [2023-11-06 22:06:50,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:50,493 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14444 transitions. [2023-11-06 22:06:50,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:50,494 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14444 transitions. [2023-11-06 22:06:50,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-06 22:06:50,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:50,497 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:50,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:06:50,497 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:50,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash -339079179, now seen corresponding path program 1 times [2023-11-06 22:06:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:50,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969155219] [2023-11-06 22:06:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:50,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:50,686 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:50,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:50,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969155219] [2023-11-06 22:06:50,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969155219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:50,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:50,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:06:50,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757179140] [2023-11-06 22:06:50,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:50,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:50,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:50,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:50,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:50,690 INFO L87 Difference]: Start difference. First operand 10669 states and 14444 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:56,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:56,097 INFO L93 Difference]: Finished difference Result 29991 states and 41155 transitions. [2023-11-06 22:06:56,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:56,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-11-06 22:06:56,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:56,140 INFO L225 Difference]: With dead ends: 29991 [2023-11-06 22:06:56,140 INFO L226 Difference]: Without dead ends: 20111 [2023-11-06 22:06:56,150 INFO L412 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 [2023-11-06 22:06:56,151 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 891 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:56,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1988 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-06 22:06:56,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20111 states. [2023-11-06 22:06:56,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20111 to 19314. [2023-11-06 22:06:56,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19314 states, 19313 states have (on average 1.2808470978097655) internal successors, (24737), 19313 states have internal predecessors, (24737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:56,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19314 states to 19314 states and 24737 transitions. [2023-11-06 22:06:56,521 INFO L78 Accepts]: Start accepts. Automaton has 19314 states and 24737 transitions. Word has length 171 [2023-11-06 22:06:56,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:56,522 INFO L495 AbstractCegarLoop]: Abstraction has 19314 states and 24737 transitions. [2023-11-06 22:06:56,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:56,523 INFO L276 IsEmpty]: Start isEmpty. Operand 19314 states and 24737 transitions. [2023-11-06 22:06:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-11-06 22:06:56,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:56,531 INFO L195 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, 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] [2023-11-06 22:06:56,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:06:56,531 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:56,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:56,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1894492209, now seen corresponding path program 1 times [2023-11-06 22:06:56,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:56,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624574328] [2023-11-06 22:06:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:56,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-06 22:06:57,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:57,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624574328] [2023-11-06 22:06:57,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624574328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:57,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:57,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:06:57,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666957924] [2023-11-06 22:06:57,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:57,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:57,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:57,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:57,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:57,046 INFO L87 Difference]: Start difference. First operand 19314 states and 24737 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:02,311 INFO L93 Difference]: Finished difference Result 44944 states and 56956 transitions. [2023-11-06 22:07:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:07:02,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 258 [2023-11-06 22:07:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:02,359 INFO L225 Difference]: With dead ends: 44944 [2023-11-06 22:07:02,360 INFO L226 Difference]: Without dead ends: 25632 [2023-11-06 22:07:02,374 INFO L412 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 [2023-11-06 22:07:02,375 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 728 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:02,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1192 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-06 22:07:02,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25632 states. [2023-11-06 22:07:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25632 to 25622. [2023-11-06 22:07:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25622 states, 25621 states have (on average 1.232621677530151) internal successors, (31581), 25621 states have internal predecessors, (31581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25622 states to 25622 states and 31581 transitions. [2023-11-06 22:07:02,782 INFO L78 Accepts]: Start accepts. Automaton has 25622 states and 31581 transitions. Word has length 258 [2023-11-06 22:07:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:02,782 INFO L495 AbstractCegarLoop]: Abstraction has 25622 states and 31581 transitions. [2023-11-06 22:07:02,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 25622 states and 31581 transitions. [2023-11-06 22:07:02,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-11-06 22:07:02,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:02,790 INFO L195 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, 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] [2023-11-06 22:07:02,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:07:02,791 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:02,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash -561364737, now seen corresponding path program 1 times [2023-11-06 22:07:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:02,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209192801] [2023-11-06 22:07:02,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:03,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:03,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209192801] [2023-11-06 22:07:03,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209192801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:03,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:03,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:07:03,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21031905] [2023-11-06 22:07:03,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:03,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:07:03,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:03,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:07:03,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:07:03,095 INFO L87 Difference]: Start difference. First operand 25622 states and 31581 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:08,788 INFO L93 Difference]: Finished difference Result 72509 states and 89970 transitions. [2023-11-06 22:07:08,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:07:08,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 273 [2023-11-06 22:07:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:08,862 INFO L225 Difference]: With dead ends: 72509 [2023-11-06 22:07:08,862 INFO L226 Difference]: Without dead ends: 47676 [2023-11-06 22:07:08,879 INFO L412 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 [2023-11-06 22:07:08,881 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 827 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:08,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 898 Invalid, 3294 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [916 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-06 22:07:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47676 states. [2023-11-06 22:07:09,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47676 to 46091. [2023-11-06 22:07:09,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46091 states, 46090 states have (on average 1.1851377739205902) internal successors, (54623), 46090 states have internal predecessors, (54623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:09,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46091 states to 46091 states and 54623 transitions. [2023-11-06 22:07:09,584 INFO L78 Accepts]: Start accepts. Automaton has 46091 states and 54623 transitions. Word has length 273 [2023-11-06 22:07:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:09,585 INFO L495 AbstractCegarLoop]: Abstraction has 46091 states and 54623 transitions. [2023-11-06 22:07:09,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 46091 states and 54623 transitions. [2023-11-06 22:07:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-11-06 22:07:09,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:09,593 INFO L195 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, 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, 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] [2023-11-06 22:07:09,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:07:09,593 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:09,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:09,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1177672583, now seen corresponding path program 1 times [2023-11-06 22:07:09,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:09,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493330305] [2023-11-06 22:07:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:09,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 87 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:11,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:11,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493330305] [2023-11-06 22:07:11,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493330305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:07:11,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728383239] [2023-11-06 22:07:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:11,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:11,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:11,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:11,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:07:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:11,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:07:11,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-06 22:07:12,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:12,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728383239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:12,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:07:12,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-06 22:07:12,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392562999] [2023-11-06 22:07:12,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:12,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:07:12,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:12,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:07:12,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:07:12,031 INFO L87 Difference]: Start difference. First operand 46091 states and 54623 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:16,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:16,924 INFO L93 Difference]: Finished difference Result 91391 states and 108451 transitions. [2023-11-06 22:07:16,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:07:16,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 287 [2023-11-06 22:07:16,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:16,987 INFO L225 Difference]: With dead ends: 91391 [2023-11-06 22:07:16,987 INFO L226 Difference]: Without dead ends: 46089 [2023-11-06 22:07:17,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:07:17,017 INFO L413 NwaCegarLoop]: 1359 mSDtfsCounter, 1160 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:17,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 1441 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 22:07:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46089 states. [2023-11-06 22:07:17,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46089 to 46088. [2023-11-06 22:07:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46088 states, 46087 states have (on average 1.150693254062968) internal successors, (53032), 46087 states have internal predecessors, (53032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:17,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46088 states to 46088 states and 53032 transitions. [2023-11-06 22:07:17,697 INFO L78 Accepts]: Start accepts. Automaton has 46088 states and 53032 transitions. Word has length 287 [2023-11-06 22:07:17,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:17,698 INFO L495 AbstractCegarLoop]: Abstraction has 46088 states and 53032 transitions. [2023-11-06 22:07:17,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:17,699 INFO L276 IsEmpty]: Start isEmpty. Operand 46088 states and 53032 transitions. [2023-11-06 22:07:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-11-06 22:07:17,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:17,712 INFO L195 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, 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, 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] [2023-11-06 22:07:17,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:17,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:17,926 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:17,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:17,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1768426365, now seen corresponding path program 1 times [2023-11-06 22:07:17,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:17,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042907050] [2023-11-06 22:07:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:17,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 216 proven. 113 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-06 22:07:20,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:20,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042907050] [2023-11-06 22:07:20,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042907050] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:07:20,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423231444] [2023-11-06 22:07:20,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:20,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:20,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:20,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:20,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:07:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:20,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:07:20,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-06 22:07:20,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:20,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423231444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:20,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:07:20,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-06 22:07:20,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698528343] [2023-11-06 22:07:20,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:20,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:07:20,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:20,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:07:20,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:07:20,593 INFO L87 Difference]: Start difference. First operand 46088 states and 53032 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:25,606 INFO L93 Difference]: Finished difference Result 91376 states and 105260 transitions. [2023-11-06 22:07:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:07:25,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 352 [2023-11-06 22:07:25,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:25,658 INFO L225 Difference]: With dead ends: 91376 [2023-11-06 22:07:25,658 INFO L226 Difference]: Without dead ends: 46077 [2023-11-06 22:07:25,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:07:25,686 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1075 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:25,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 817 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-06 22:07:25,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46077 states. [2023-11-06 22:07:26,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46077 to 46074. [2023-11-06 22:07:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46074 states, 46073 states have (on average 1.1090443426735832) internal successors, (51097), 46073 states have internal predecessors, (51097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46074 states to 46074 states and 51097 transitions. [2023-11-06 22:07:26,501 INFO L78 Accepts]: Start accepts. Automaton has 46074 states and 51097 transitions. Word has length 352 [2023-11-06 22:07:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:26,502 INFO L495 AbstractCegarLoop]: Abstraction has 46074 states and 51097 transitions. [2023-11-06 22:07:26,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:26,503 INFO L276 IsEmpty]: Start isEmpty. Operand 46074 states and 51097 transitions. [2023-11-06 22:07:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2023-11-06 22:07:26,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:26,517 INFO L195 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, 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, 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] [2023-11-06 22:07:26,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:26,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:07:26,724 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:26,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash 143007617, now seen corresponding path program 1 times [2023-11-06 22:07:26,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:26,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591614464] [2023-11-06 22:07:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:26,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-06 22:07:27,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:27,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591614464] [2023-11-06 22:07:27,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591614464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:27,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:27,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:07:27,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325010388] [2023-11-06 22:07:27,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:27,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:07:27,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:27,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:07:27,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:07:27,316 INFO L87 Difference]: Start difference. First operand 46074 states and 51097 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:38,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:38,752 INFO L93 Difference]: Finished difference Result 122259 states and 136283 transitions. [2023-11-06 22:07:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:07:38,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 394 [2023-11-06 22:07:38,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:38,835 INFO L225 Difference]: With dead ends: 122259 [2023-11-06 22:07:38,835 INFO L226 Difference]: Without dead ends: 76974 [2023-11-06 22:07:38,859 INFO L412 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 [2023-11-06 22:07:38,860 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1700 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 6751 mSolverCounterSat, 1002 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 7753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1002 IncrementalHoareTripleChecker+Valid, 6751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:38,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 892 Invalid, 7753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1002 Valid, 6751 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-11-06 22:07:38,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76974 states. [2023-11-06 22:07:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76974 to 57894. [2023-11-06 22:07:39,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57894 states, 57893 states have (on average 1.1003575561812309) internal successors, (63703), 57893 states have internal predecessors, (63703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57894 states to 57894 states and 63703 transitions. [2023-11-06 22:07:39,931 INFO L78 Accepts]: Start accepts. Automaton has 57894 states and 63703 transitions. Word has length 394 [2023-11-06 22:07:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:39,932 INFO L495 AbstractCegarLoop]: Abstraction has 57894 states and 63703 transitions. [2023-11-06 22:07:39,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 57894 states and 63703 transitions. [2023-11-06 22:07:39,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-11-06 22:07:39,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:39,939 INFO L195 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:39,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:07:39,940 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:39,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1259811683, now seen corresponding path program 1 times [2023-11-06 22:07:39,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:39,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607600870] [2023-11-06 22:07:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:39,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-06 22:07:40,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:40,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607600870] [2023-11-06 22:07:40,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607600870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:40,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:40,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:07:40,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464105125] [2023-11-06 22:07:40,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:40,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:07:40,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:40,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:07:40,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:07:40,694 INFO L87 Difference]: Start difference. First operand 57894 states and 63703 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) [2023-11-06 22:07:46,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:46,564 INFO L93 Difference]: Finished difference Result 139407 states and 154440 transitions. [2023-11-06 22:07:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:07:46,565 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 407 [2023-11-06 22:07:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:46,651 INFO L225 Difference]: With dead ends: 139407 [2023-11-06 22:07:46,651 INFO L226 Difference]: Without dead ends: 82302 [2023-11-06 22:07:46,671 INFO L412 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 [2023-11-06 22:07:46,671 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 831 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 963 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:46,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 833 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-06 22:07:46,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82302 states. [2023-11-06 22:07:47,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82302 to 80710. [2023-11-06 22:07:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80710 states, 80709 states have (on average 1.1005959682315478) internal successors, (88828), 80709 states have internal predecessors, (88828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80710 states to 80710 states and 88828 transitions. [2023-11-06 22:07:47,900 INFO L78 Accepts]: Start accepts. Automaton has 80710 states and 88828 transitions. Word has length 407 [2023-11-06 22:07:47,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:47,901 INFO L495 AbstractCegarLoop]: Abstraction has 80710 states and 88828 transitions. [2023-11-06 22:07:47,902 INFO L496 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) [2023-11-06 22:07:47,902 INFO L276 IsEmpty]: Start isEmpty. Operand 80710 states and 88828 transitions. [2023-11-06 22:07:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-11-06 22:07:48,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:48,150 INFO L195 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:48,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:07:48,151 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:48,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1404182117, now seen corresponding path program 1 times [2023-11-06 22:07:48,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:48,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736019891] [2023-11-06 22:07:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:48,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 369 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-06 22:07:49,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:49,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736019891] [2023-11-06 22:07:49,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736019891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:49,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:49,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:07:49,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27791308] [2023-11-06 22:07:49,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:49,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:07:49,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:49,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:07:49,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:07:49,162 INFO L87 Difference]: Start difference. First operand 80710 states and 88828 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:54,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:54,801 INFO L93 Difference]: Finished difference Result 182696 states and 200598 transitions. [2023-11-06 22:07:54,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:07:54,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 427 [2023-11-06 22:07:54,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:54,928 INFO L225 Difference]: With dead ends: 182696 [2023-11-06 22:07:54,928 INFO L226 Difference]: Without dead ends: 102775 [2023-11-06 22:07:54,959 INFO L412 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 [2023-11-06 22:07:54,960 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 804 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:54,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 1114 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-06 22:07:55,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102775 states. [2023-11-06 22:07:56,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102775 to 98815. [2023-11-06 22:07:56,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98815 states, 98814 states have (on average 1.0907260104843444) internal successors, (107779), 98814 states have internal predecessors, (107779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98815 states to 98815 states and 107779 transitions. [2023-11-06 22:07:56,784 INFO L78 Accepts]: Start accepts. Automaton has 98815 states and 107779 transitions. Word has length 427 [2023-11-06 22:07:56,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:56,784 INFO L495 AbstractCegarLoop]: Abstraction has 98815 states and 107779 transitions. [2023-11-06 22:07:56,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:56,785 INFO L276 IsEmpty]: Start isEmpty. Operand 98815 states and 107779 transitions. [2023-11-06 22:07:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-11-06 22:07:56,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:56,822 INFO L195 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, 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, 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] [2023-11-06 22:07:56,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:07:56,822 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:56,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:56,823 INFO L85 PathProgramCache]: Analyzing trace with hash -625667605, now seen corresponding path program 1 times [2023-11-06 22:07:56,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:56,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977507547] [2023-11-06 22:07:56,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:56,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 385 proven. 113 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-06 22:07:59,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:59,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977507547] [2023-11-06 22:07:59,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977507547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:07:59,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944430255] [2023-11-06 22:07:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:59,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:59,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:59,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:59,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:07:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:59,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:07:59,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:59,602 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2023-11-06 22:07:59,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:59,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944430255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:59,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:07:59,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-06 22:07:59,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485626053] [2023-11-06 22:07:59,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:59,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:07:59,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:59,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:07:59,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:07:59,606 INFO L87 Difference]: Start difference. First operand 98815 states and 107779 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:05,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:05,336 INFO L93 Difference]: Finished difference Result 198419 states and 216356 transitions. [2023-11-06 22:08:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:05,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 437 [2023-11-06 22:08:05,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:05,454 INFO L225 Difference]: With dead ends: 198419 [2023-11-06 22:08:05,455 INFO L226 Difference]: Without dead ends: 100393 [2023-11-06 22:08:05,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:08:05,484 INFO L413 NwaCegarLoop]: 1385 mSDtfsCounter, 993 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:05,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1471 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-06 22:08:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100393 states. [2023-11-06 22:08:06,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100393 to 98807. [2023-11-06 22:08:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98807 states, 98806 states have (on average 1.067111309029816) internal successors, (105437), 98806 states have internal predecessors, (105437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98807 states to 98807 states and 105437 transitions. [2023-11-06 22:08:07,056 INFO L78 Accepts]: Start accepts. Automaton has 98807 states and 105437 transitions. Word has length 437 [2023-11-06 22:08:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:07,058 INFO L495 AbstractCegarLoop]: Abstraction has 98807 states and 105437 transitions. [2023-11-06 22:08:07,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 98807 states and 105437 transitions. [2023-11-06 22:08:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2023-11-06 22:08:07,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:07,068 INFO L195 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, 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, 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] [2023-11-06 22:08:07,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:07,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:08:07,269 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:07,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:07,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1887672211, now seen corresponding path program 1 times [2023-11-06 22:08:07,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:07,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330792252] [2023-11-06 22:08:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:07,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-06 22:08:08,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330792252] [2023-11-06 22:08:08,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330792252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:08,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:08,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:08,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111526201] [2023-11-06 22:08:08,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:08,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:08,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:08,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:08,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:08,257 INFO L87 Difference]: Start difference. First operand 98807 states and 105437 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:15,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:15,536 INFO L93 Difference]: Finished difference Result 241040 states and 257884 transitions. [2023-11-06 22:08:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:15,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 477 [2023-11-06 22:08:15,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:15,699 INFO L225 Difference]: With dead ends: 241040 [2023-11-06 22:08:15,699 INFO L226 Difference]: Without dead ends: 143022 [2023-11-06 22:08:15,742 INFO L412 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 [2023-11-06 22:08:15,743 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 845 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2970 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 3580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 2970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:15,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 752 Invalid, 3580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2970 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-06 22:08:15,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143022 states. [2023-11-06 22:08:17,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143022 to 118493. [2023-11-06 22:08:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118493 states, 118492 states have (on average 1.0664686223542517) internal successors, (126368), 118492 states have internal predecessors, (126368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118493 states to 118493 states and 126368 transitions. [2023-11-06 22:08:17,705 INFO L78 Accepts]: Start accepts. Automaton has 118493 states and 126368 transitions. Word has length 477 [2023-11-06 22:08:17,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:17,706 INFO L495 AbstractCegarLoop]: Abstraction has 118493 states and 126368 transitions. [2023-11-06 22:08:17,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:17,706 INFO L276 IsEmpty]: Start isEmpty. Operand 118493 states and 126368 transitions. [2023-11-06 22:08:17,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2023-11-06 22:08:17,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:17,719 INFO L195 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:17,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:08:17,720 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:17,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:17,720 INFO L85 PathProgramCache]: Analyzing trace with hash -647290550, now seen corresponding path program 1 times [2023-11-06 22:08:17,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:17,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763688275] [2023-11-06 22:08:17,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:17,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 540 proven. 113 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-06 22:08:20,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:20,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763688275] [2023-11-06 22:08:20,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763688275] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:20,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600248461] [2023-11-06 22:08:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:20,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:20,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:20,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:20,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:08:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:20,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:08:20,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 628 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-06 22:08:21,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:21,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600248461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:21,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:08:21,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-06 22:08:21,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97685120] [2023-11-06 22:08:21,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:21,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:21,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:21,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:21,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:08:21,091 INFO L87 Difference]: Start difference. First operand 118493 states and 126368 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:26,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:26,907 INFO L93 Difference]: Finished difference Result 230661 states and 246978 transitions. [2023-11-06 22:08:26,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:26,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 518 [2023-11-06 22:08:26,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:27,376 INFO L225 Difference]: With dead ends: 230661 [2023-11-06 22:08:27,392 INFO L226 Difference]: Without dead ends: 128703 [2023-11-06 22:08:27,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:08:27,480 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1201 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:27,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 390 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-06 22:08:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128703 states. [2023-11-06 22:08:28,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128703 to 128703. [2023-11-06 22:08:28,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128703 states, 128702 states have (on average 1.0603331727556682) internal successors, (136467), 128702 states have internal predecessors, (136467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128703 states to 128703 states and 136467 transitions. [2023-11-06 22:08:29,104 INFO L78 Accepts]: Start accepts. Automaton has 128703 states and 136467 transitions. Word has length 518 [2023-11-06 22:08:29,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:29,105 INFO L495 AbstractCegarLoop]: Abstraction has 128703 states and 136467 transitions. [2023-11-06 22:08:29,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 128703 states and 136467 transitions. [2023-11-06 22:08:29,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-11-06 22:08:29,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:29,129 INFO L195 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:29,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:29,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:08:29,336 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:29,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:29,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2103393123, now seen corresponding path program 1 times [2023-11-06 22:08:29,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:29,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100793251] [2023-11-06 22:08:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:29,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 328 proven. 110 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-06 22:08:31,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:31,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100793251] [2023-11-06 22:08:31,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100793251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:31,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834520148] [2023-11-06 22:08:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:31,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:31,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:31,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:31,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:08:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:32,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:08:32,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-11-06 22:08:32,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:32,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834520148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:32,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:08:32,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-06 22:08:32,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723144582] [2023-11-06 22:08:32,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:32,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:32,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:32,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:32,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:08:32,249 INFO L87 Difference]: Start difference. First operand 128703 states and 136467 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:39,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:39,066 INFO L93 Difference]: Finished difference Result 280220 states and 298586 transitions. [2023-11-06 22:08:39,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:39,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 542 [2023-11-06 22:08:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:39,264 INFO L225 Difference]: With dead ends: 280220 [2023-11-06 22:08:39,264 INFO L226 Difference]: Without dead ends: 168052 [2023-11-06 22:08:39,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:08:39,309 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 846 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 3281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:39,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1692 Invalid, 3281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-06 22:08:39,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168052 states. [2023-11-06 22:08:41,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168052 to 168052. [2023-11-06 22:08:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168052 states, 168051 states have (on average 1.0585119993335357) internal successors, (177884), 168051 states have internal predecessors, (177884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168052 states to 168052 states and 177884 transitions. [2023-11-06 22:08:41,888 INFO L78 Accepts]: Start accepts. Automaton has 168052 states and 177884 transitions. Word has length 542 [2023-11-06 22:08:41,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:41,889 INFO L495 AbstractCegarLoop]: Abstraction has 168052 states and 177884 transitions. [2023-11-06 22:08:41,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:41,890 INFO L276 IsEmpty]: Start isEmpty. Operand 168052 states and 177884 transitions. [2023-11-06 22:08:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-11-06 22:08:41,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:41,914 INFO L195 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 22:08:41,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:42,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6afc709-e76c-43da-9461-b1887c64c894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:08:42,121 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:42,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:42,122 INFO L85 PathProgramCache]: Analyzing trace with hash -216386824, now seen corresponding path program 1 times [2023-11-06 22:08:42,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:42,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113961629] [2023-11-06 22:08:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:42,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-06 22:08:43,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:43,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113961629] [2023-11-06 22:08:43,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113961629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:43,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:43,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:43,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324260766] [2023-11-06 22:08:43,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:43,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:43,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:43,323 INFO L87 Difference]: Start difference. First operand 168052 states and 177884 transitions. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:50,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:50,209 INFO L93 Difference]: Finished difference Result 366804 states and 389131 transitions. [2023-11-06 22:08:50,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:50,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 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 548 [2023-11-06 22:08:50,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:50,464 INFO L225 Difference]: With dead ends: 366804 [2023-11-06 22:08:50,464 INFO L226 Difference]: Without dead ends: 199541 [2023-11-06 22:08:50,523 INFO L412 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 [2023-11-06 22:08:50,523 INFO L413 NwaCegarLoop]: 1735 mSDtfsCounter, 747 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 2928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:50,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1870 Invalid, 2928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-06 22:08:50,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199541 states. [2023-11-06 22:08:53,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199541 to 197170. [2023-11-06 22:08:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197170 states, 197169 states have (on average 1.0545268272395762) internal successors, (207920), 197169 states have internal predecessors, (207920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197170 states to 197170 states and 207920 transitions. [2023-11-06 22:08:54,382 INFO L78 Accepts]: Start accepts. Automaton has 197170 states and 207920 transitions. Word has length 548 [2023-11-06 22:08:54,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:54,383 INFO L495 AbstractCegarLoop]: Abstraction has 197170 states and 207920 transitions. [2023-11-06 22:08:54,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 197170 states and 207920 transitions. [2023-11-06 22:08:54,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2023-11-06 22:08:54,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:54,428 INFO L195 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-06 22:08:54,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:08:54,429 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:54,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:54,430 INFO L85 PathProgramCache]: Analyzing trace with hash -664324032, now seen corresponding path program 1 times [2023-11-06 22:08:54,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:54,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479131210] [2023-11-06 22:08:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:54,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat