./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label38.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/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_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label38.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/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_64633b2f-db06-482e-8dd4-671c506d4c97/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 e22f4e480e00059ce3613278d58ea2e0a6d73a8e3bda2e3d0eda9cb576504b9d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:07:56,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:07:56,963 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:07:56,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:07:56,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:07:57,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:07:57,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:07:57,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:07:57,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:07:57,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:07:57,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:07:57,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:07:57,025 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:07:57,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:07:57,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:07:57,028 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:07:57,028 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:07:57,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:07:57,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:07:57,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:07:57,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:07:57,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:07:57,031 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:07:57,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:07:57,032 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:07:57,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:07:57,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:07:57,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:07:57,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:57,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:07:57,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:07:57,037 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:07:57,037 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:07:57,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:07:57,037 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:07:57,038 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:07:57,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:07:57,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:07:57,038 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:07:57,039 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_64633b2f-db06-482e-8dd4-671c506d4c97/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e22f4e480e00059ce3613278d58ea2e0a6d73a8e3bda2e3d0eda9cb576504b9d [2023-11-06 22:07:57,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:07:57,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:07:57,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:07:57,420 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:07:57,420 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:07:57,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/eca-rers2012/Problem17_label38.c [2023-11-06 22:08:00,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:08:00,981 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:08:00,982 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/sv-benchmarks/c/eca-rers2012/Problem17_label38.c [2023-11-06 22:08:01,007 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/data/bee22a56e/b2a8f5d416644489aea5a11b174670b6/FLAGe5f40d841 [2023-11-06 22:08:01,025 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/data/bee22a56e/b2a8f5d416644489aea5a11b174670b6 [2023-11-06 22:08:01,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:08:01,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:08:01,032 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:01,032 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:08:01,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:08:01,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:01" (1/1) ... [2023-11-06 22:08:01,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c36d90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:01, skipping insertion in model container [2023-11-06 22:08:01,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:01" (1/1) ... [2023-11-06 22:08:01,141 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:08:01,414 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_64633b2f-db06-482e-8dd4-671c506d4c97/sv-benchmarks/c/eca-rers2012/Problem17_label38.c[7744,7757] [2023-11-06 22:08:02,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:02,432 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:08:02,471 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_64633b2f-db06-482e-8dd4-671c506d4c97/sv-benchmarks/c/eca-rers2012/Problem17_label38.c[7744,7757] [2023-11-06 22:08:02,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:02,882 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:08:02,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02 WrapperNode [2023-11-06 22:08:02,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:02,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:08:02,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:08:02,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:08:02,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02" (1/1) ... [2023-11-06 22:08:02,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02" (1/1) ... [2023-11-06 22:08:03,286 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2023-11-06 22:08:03,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:08:03,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:08:03,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:08:03,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:08:03,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02" (1/1) ... [2023-11-06 22:08:03,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02" (1/1) ... [2023-11-06 22:08:03,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02" (1/1) ... [2023-11-06 22:08:03,352 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02" (1/1) ... [2023-11-06 22:08:03,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02" (1/1) ... [2023-11-06 22:08:03,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02" (1/1) ... [2023-11-06 22:08:03,685 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02" (1/1) ... [2023-11-06 22:08:03,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02" (1/1) ... [2023-11-06 22:08:03,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:08:03,799 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:08:03,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:08:03,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:08:03,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02" (1/1) ... [2023-11-06 22:08:03,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:03,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:03,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:08:03,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:08:03,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:08:03,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:08:03,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:08:03,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:08:03,966 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:08:03,968 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:08:08,627 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:08:08,645 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:08:08,645 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:08:08,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:08 BoogieIcfgContainer [2023-11-06 22:08:08,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:08:08,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:08:08,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:08:08,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:08:08,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:08:01" (1/3) ... [2023-11-06 22:08:08,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29798aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:08, skipping insertion in model container [2023-11-06 22:08:08,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:02" (2/3) ... [2023-11-06 22:08:08,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29798aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:08, skipping insertion in model container [2023-11-06 22:08:08,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:08" (3/3) ... [2023-11-06 22:08:08,661 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label38.c [2023-11-06 22:08:08,686 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:08:08,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:08:08,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:08:08,777 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;@7f2921bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:08:08,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:08:08,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 22:08:08,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:08:08,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:08,797 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, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:08,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:08,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:08,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1382487458, now seen corresponding path program 1 times [2023-11-06 22:08:08,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:08,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447046785] [2023-11-06 22:08:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:08,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:09,355 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 22:08:09,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:09,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447046785] [2023-11-06 22:08:09,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447046785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:09,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:09,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:08:09,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005369475] [2023-11-06 22:08:09,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:09,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:09,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:09,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:09,401 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:13,165 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2023-11-06 22:08:13,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:13,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-06 22:08:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:13,189 INFO L225 Difference]: With dead ends: 1644 [2023-11-06 22:08:13,190 INFO L226 Difference]: Without dead ends: 977 [2023-11-06 22:08:13,195 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 22:08:13,199 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 436 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:13,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-06 22:08:13,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-11-06 22:08:13,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2023-11-06 22:08:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 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 22:08:13,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2023-11-06 22:08:13,308 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 52 [2023-11-06 22:08:13,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:13,309 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2023-11-06 22:08:13,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2023-11-06 22:08:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-06 22:08:13,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:13,316 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, 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] [2023-11-06 22:08:13,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:08:13,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:13,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:13,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1909224454, now seen corresponding path program 1 times [2023-11-06 22:08:13,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:13,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97153481] [2023-11-06 22:08:13,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:13,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:13,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:13,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97153481] [2023-11-06 22:08:13,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97153481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:13,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:13,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:08:13,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630953603] [2023-11-06 22:08:13,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:13,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:13,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:13,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:13,644 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 22:08:17,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:17,158 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2023-11-06 22:08:17,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:17,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-11-06 22:08:17,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:17,171 INFO L225 Difference]: With dead ends: 2813 [2023-11-06 22:08:17,172 INFO L226 Difference]: Without dead ends: 1844 [2023-11-06 22:08:17,174 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 22:08:17,176 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:17,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-06 22:08:17,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2023-11-06 22:08:17,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2023-11-06 22:08:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 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 22:08:17,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2023-11-06 22:08:17,238 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 119 [2023-11-06 22:08:17,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:17,239 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2023-11-06 22:08:17,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 22:08:17,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2023-11-06 22:08:17,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-06 22:08:17,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:17,244 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, 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 22:08:17,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:08:17,244 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:17,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:17,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1054868238, now seen corresponding path program 1 times [2023-11-06 22:08:17,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:17,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882500892] [2023-11-06 22:08:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:17,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:17,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:17,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882500892] [2023-11-06 22:08:17,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882500892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:17,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:17,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:17,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292337423] [2023-11-06 22:08:17,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:17,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:17,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:17,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:17,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:17,490 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:20,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:20,855 INFO L93 Difference]: Finished difference Result 4552 states and 6282 transitions. [2023-11-06 22:08:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:20,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-11-06 22:08:20,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:20,872 INFO L225 Difference]: With dead ends: 4552 [2023-11-06 22:08:20,872 INFO L226 Difference]: Without dead ends: 2713 [2023-11-06 22:08:20,876 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 22:08:20,877 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 455 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:20,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 886 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-06 22:08:20,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2023-11-06 22:08:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2023-11-06 22:08:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.3003690036900368) internal successors, (3524), 2710 states have internal predecessors, (3524), 0 states have call successors, (0), 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 22:08:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3524 transitions. [2023-11-06 22:08:20,951 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3524 transitions. Word has length 122 [2023-11-06 22:08:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:20,958 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3524 transitions. [2023-11-06 22:08:20,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3524 transitions. [2023-11-06 22:08:20,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-06 22:08:20,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:20,973 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:20,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:08:20,974 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:20,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:20,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1602165495, now seen corresponding path program 1 times [2023-11-06 22:08:20,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:20,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149497515] [2023-11-06 22:08:20,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:20,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-06 22:08:21,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:21,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149497515] [2023-11-06 22:08:21,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149497515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:21,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:21,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:08:21,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693951796] [2023-11-06 22:08:21,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:21,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:21,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:21,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:21,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:21,324 INFO L87 Difference]: Start difference. First operand 2711 states and 3524 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 22:08:24,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:24,329 INFO L93 Difference]: Finished difference Result 7984 states and 10361 transitions. [2023-11-06 22:08:24,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:24,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 191 [2023-11-06 22:08:24,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:24,355 INFO L225 Difference]: With dead ends: 7984 [2023-11-06 22:08:24,355 INFO L226 Difference]: Without dead ends: 4421 [2023-11-06 22:08:24,360 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 22:08:24,372 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:24,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-06 22:08:24,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2023-11-06 22:08:24,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3571. [2023-11-06 22:08:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 3570 states have (on average 1.1775910364145659) internal successors, (4204), 3570 states have internal predecessors, (4204), 0 states have call successors, (0), 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 22:08:24,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 4204 transitions. [2023-11-06 22:08:24,469 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 4204 transitions. Word has length 191 [2023-11-06 22:08:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:24,471 INFO L495 AbstractCegarLoop]: Abstraction has 3571 states and 4204 transitions. [2023-11-06 22:08:24,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 22:08:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 4204 transitions. [2023-11-06 22:08:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-06 22:08:24,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:24,475 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:24,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:08:24,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:24,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:24,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1773567419, now seen corresponding path program 1 times [2023-11-06 22:08:24,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:24,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189809002] [2023-11-06 22:08:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:24,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:24,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:24,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189809002] [2023-11-06 22:08:24,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189809002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:24,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:24,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:24,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236474587] [2023-11-06 22:08:24,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:24,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:24,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:24,882 INFO L87 Difference]: Start difference. First operand 3571 states and 4204 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 22:08:27,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:27,297 INFO L93 Difference]: Finished difference Result 9273 states and 11087 transitions. [2023-11-06 22:08:27,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:27,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2023-11-06 22:08:27,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:27,334 INFO L225 Difference]: With dead ends: 9273 [2023-11-06 22:08:27,334 INFO L226 Difference]: Without dead ends: 5704 [2023-11-06 22:08:27,340 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 22:08:27,341 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:27,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:08:27,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2023-11-06 22:08:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5704. [2023-11-06 22:08:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 1.1595651411537786) internal successors, (6613), 5703 states have internal predecessors, (6613), 0 states have call successors, (0), 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 22:08:27,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 6613 transitions. [2023-11-06 22:08:27,489 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 6613 transitions. Word has length 204 [2023-11-06 22:08:27,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:27,490 INFO L495 AbstractCegarLoop]: Abstraction has 5704 states and 6613 transitions. [2023-11-06 22:08:27,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 22:08:27,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 6613 transitions. [2023-11-06 22:08:27,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-06 22:08:27,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:27,496 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:27,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:08:27,496 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:27,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1290832576, now seen corresponding path program 1 times [2023-11-06 22:08:27,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:27,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090684468] [2023-11-06 22:08:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:27,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-06 22:08:27,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:27,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090684468] [2023-11-06 22:08:27,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090684468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:27,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:27,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:27,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252391559] [2023-11-06 22:08:27,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:27,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:27,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:27,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:27,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:27,715 INFO L87 Difference]: Start difference. First operand 5704 states and 6613 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 22:08:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:30,399 INFO L93 Difference]: Finished difference Result 14376 states and 16776 transitions. [2023-11-06 22:08:30,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:30,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 206 [2023-11-06 22:08:30,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:30,447 INFO L225 Difference]: With dead ends: 14376 [2023-11-06 22:08:30,448 INFO L226 Difference]: Without dead ends: 8673 [2023-11-06 22:08:30,456 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 22:08:30,457 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 399 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:30,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 22:08:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8673 states. [2023-11-06 22:08:30,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8673 to 5677. [2023-11-06 22:08:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5676 states have (on average 1.1578576462297392) internal successors, (6572), 5676 states have internal predecessors, (6572), 0 states have call successors, (0), 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 22:08:30,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 6572 transitions. [2023-11-06 22:08:30,620 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 6572 transitions. Word has length 206 [2023-11-06 22:08:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:30,622 INFO L495 AbstractCegarLoop]: Abstraction has 5677 states and 6572 transitions. [2023-11-06 22:08:30,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 22:08:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 6572 transitions. [2023-11-06 22:08:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-11-06 22:08:30,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:30,634 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, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:30,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:08:30,634 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:30,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:30,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1757001565, now seen corresponding path program 1 times [2023-11-06 22:08:30,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:30,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216812633] [2023-11-06 22:08:30,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:30,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-06 22:08:30,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:30,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216812633] [2023-11-06 22:08:30,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216812633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:30,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:30,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:30,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091515485] [2023-11-06 22:08:30,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:30,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:30,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:30,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:30,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:30,964 INFO L87 Difference]: Start difference. First operand 5677 states and 6572 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 22:08:33,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:33,577 INFO L93 Difference]: Finished difference Result 14315 states and 16680 transitions. [2023-11-06 22:08:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:33,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 284 [2023-11-06 22:08:33,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:33,614 INFO L225 Difference]: With dead ends: 14315 [2023-11-06 22:08:33,614 INFO L226 Difference]: Without dead ends: 7790 [2023-11-06 22:08:33,622 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 22:08:33,622 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:33,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 22:08:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7790 states. [2023-11-06 22:08:33,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7790 to 7790. [2023-11-06 22:08:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7790 states, 7789 states have (on average 1.1186288355372962) internal successors, (8713), 7789 states have internal predecessors, (8713), 0 states have call successors, (0), 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 22:08:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7790 states to 7790 states and 8713 transitions. [2023-11-06 22:08:33,781 INFO L78 Accepts]: Start accepts. Automaton has 7790 states and 8713 transitions. Word has length 284 [2023-11-06 22:08:33,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:33,782 INFO L495 AbstractCegarLoop]: Abstraction has 7790 states and 8713 transitions. [2023-11-06 22:08:33,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 22:08:33,782 INFO L276 IsEmpty]: Start isEmpty. Operand 7790 states and 8713 transitions. [2023-11-06 22:08:33,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-11-06 22:08:33,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:33,790 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, 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, 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 22:08:33,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:08:33,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:33,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:33,791 INFO L85 PathProgramCache]: Analyzing trace with hash 830822918, now seen corresponding path program 1 times [2023-11-06 22:08:33,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:33,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949489369] [2023-11-06 22:08:33,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:33,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-11-06 22:08:34,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:34,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949489369] [2023-11-06 22:08:34,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949489369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:34,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:34,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:34,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322436255] [2023-11-06 22:08:34,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:34,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:34,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:34,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:34,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:34,073 INFO L87 Difference]: Start difference. First operand 7790 states and 8713 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 22:08:36,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:36,905 INFO L93 Difference]: Finished difference Result 18559 states and 20913 transitions. [2023-11-06 22:08:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:36,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 324 [2023-11-06 22:08:36,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:36,933 INFO L225 Difference]: With dead ends: 18559 [2023-11-06 22:08:36,933 INFO L226 Difference]: Without dead ends: 10771 [2023-11-06 22:08:36,943 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 22:08:36,944 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 420 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:36,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 402 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 22:08:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2023-11-06 22:08:37,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 9916. [2023-11-06 22:08:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9916 states, 9915 states have (on average 1.119415027735754) internal successors, (11099), 9915 states have internal predecessors, (11099), 0 states have call successors, (0), 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 22:08:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9916 states to 9916 states and 11099 transitions. [2023-11-06 22:08:37,156 INFO L78 Accepts]: Start accepts. Automaton has 9916 states and 11099 transitions. Word has length 324 [2023-11-06 22:08:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:37,157 INFO L495 AbstractCegarLoop]: Abstraction has 9916 states and 11099 transitions. [2023-11-06 22:08:37,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 22:08:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 9916 states and 11099 transitions. [2023-11-06 22:08:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-11-06 22:08:37,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:37,171 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:37,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:08:37,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:37,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:37,172 INFO L85 PathProgramCache]: Analyzing trace with hash -706258024, now seen corresponding path program 1 times [2023-11-06 22:08:37,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:37,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161106123] [2023-11-06 22:08:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:37,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:37,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161106123] [2023-11-06 22:08:37,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161106123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:37,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:37,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:37,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370710194] [2023-11-06 22:08:37,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:37,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:08:37,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:08:37,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:08:37,731 INFO L87 Difference]: Start difference. First operand 9916 states and 11099 transitions. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 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 22:08:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:41,349 INFO L93 Difference]: Finished difference Result 26239 states and 29414 transitions. [2023-11-06 22:08:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:08:41,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 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 391 [2023-11-06 22:08:41,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:41,381 INFO L225 Difference]: With dead ends: 26239 [2023-11-06 22:08:41,382 INFO L226 Difference]: Without dead ends: 15900 [2023-11-06 22:08:41,392 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 22:08:41,393 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 623 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:41,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 209 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2438 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-06 22:08:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15900 states. [2023-11-06 22:08:41,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15900 to 15898. [2023-11-06 22:08:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15898 states, 15897 states have (on average 1.1247405170786942) internal successors, (17880), 15897 states have internal predecessors, (17880), 0 states have call successors, (0), 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 22:08:41,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15898 states to 15898 states and 17880 transitions. [2023-11-06 22:08:41,650 INFO L78 Accepts]: Start accepts. Automaton has 15898 states and 17880 transitions. Word has length 391 [2023-11-06 22:08:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:41,652 INFO L495 AbstractCegarLoop]: Abstraction has 15898 states and 17880 transitions. [2023-11-06 22:08:41,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 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 22:08:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 15898 states and 17880 transitions. [2023-11-06 22:08:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-11-06 22:08:41,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:41,672 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:08:41,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:08:41,672 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:41,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:41,673 INFO L85 PathProgramCache]: Analyzing trace with hash -244612345, now seen corresponding path program 1 times [2023-11-06 22:08:41,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:41,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959991011] [2023-11-06 22:08:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:41,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-06 22:08:42,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:42,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959991011] [2023-11-06 22:08:42,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959991011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:42,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:42,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:42,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830372689] [2023-11-06 22:08:42,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:42,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:42,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:42,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:42,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:42,131 INFO L87 Difference]: Start difference. First operand 15898 states and 17880 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 22:08:44,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:44,840 INFO L93 Difference]: Finished difference Result 44148 states and 49784 transitions. [2023-11-06 22:08:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:44,843 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 425 [2023-11-06 22:08:44,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:44,898 INFO L225 Difference]: With dead ends: 44148 [2023-11-06 22:08:44,898 INFO L226 Difference]: Without dead ends: 28252 [2023-11-06 22:08:44,915 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 22:08:44,915 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 495 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:44,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 289 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 22:08:44,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28252 states. [2023-11-06 22:08:45,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28252 to 26958. [2023-11-06 22:08:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26958 states, 26957 states have (on average 1.120525281003079) internal successors, (30206), 26957 states have internal predecessors, (30206), 0 states have call successors, (0), 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 22:08:45,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26958 states to 26958 states and 30206 transitions. [2023-11-06 22:08:45,530 INFO L78 Accepts]: Start accepts. Automaton has 26958 states and 30206 transitions. Word has length 425 [2023-11-06 22:08:45,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:45,530 INFO L495 AbstractCegarLoop]: Abstraction has 26958 states and 30206 transitions. [2023-11-06 22:08:45,531 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 22:08:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 26958 states and 30206 transitions. [2023-11-06 22:08:45,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-11-06 22:08:45,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:45,550 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:45,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:08:45,551 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:45,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:45,553 INFO L85 PathProgramCache]: Analyzing trace with hash -382818199, now seen corresponding path program 1 times [2023-11-06 22:08:45,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:45,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134258186] [2023-11-06 22:08:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:45,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-11-06 22:08:46,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:46,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134258186] [2023-11-06 22:08:46,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134258186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:46,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:46,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:46,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244628533] [2023-11-06 22:08:46,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:46,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:46,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:46,410 INFO L87 Difference]: Start difference. First operand 26958 states and 30206 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:49,289 INFO L93 Difference]: Finished difference Result 64137 states and 71882 transitions. [2023-11-06 22:08:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:49,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 487 [2023-11-06 22:08:49,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:49,340 INFO L225 Difference]: With dead ends: 64137 [2023-11-06 22:08:49,340 INFO L226 Difference]: Without dead ends: 37181 [2023-11-06 22:08:49,357 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 22:08:49,358 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 472 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:49,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 184 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 22:08:49,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37181 states. [2023-11-06 22:08:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37181 to 34187. [2023-11-06 22:08:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34187 states, 34186 states have (on average 1.1263675188673725) internal successors, (38506), 34186 states have internal predecessors, (38506), 0 states have call successors, (0), 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 22:08:50,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34187 states to 34187 states and 38506 transitions. [2023-11-06 22:08:50,068 INFO L78 Accepts]: Start accepts. Automaton has 34187 states and 38506 transitions. Word has length 487 [2023-11-06 22:08:50,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:50,069 INFO L495 AbstractCegarLoop]: Abstraction has 34187 states and 38506 transitions. [2023-11-06 22:08:50,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 34187 states and 38506 transitions. [2023-11-06 22:08:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-11-06 22:08:50,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:50,123 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:08:50,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:08:50,123 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:50,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2099809724, now seen corresponding path program 1 times [2023-11-06 22:08:50,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:50,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226260968] [2023-11-06 22:08:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:50,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 367 proven. 82 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-06 22:08:51,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:51,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226260968] [2023-11-06 22:08:51,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226260968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:51,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217672158] [2023-11-06 22:08:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:51,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:51,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:51,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:51,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:08:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:51,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:08:51,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 335 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:52,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 499 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:53,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217672158] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:53,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:08:53,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2023-11-06 22:08:53,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496658080] [2023-11-06 22:08:53,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:53,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:53,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:53,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:53,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:08:53,506 INFO L87 Difference]: Start difference. First operand 34187 states and 38506 transitions. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 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 22:08:59,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:59,381 INFO L93 Difference]: Finished difference Result 109697 states and 123429 transitions. [2023-11-06 22:08:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:59,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 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 576 [2023-11-06 22:08:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:59,447 INFO L225 Difference]: With dead ends: 109697 [2023-11-06 22:08:59,447 INFO L226 Difference]: Without dead ends: 72524 [2023-11-06 22:08:59,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1153 GetRequests, 1147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:08:59,466 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1402 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2772 mSolverCounterSat, 1133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 3905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1133 IncrementalHoareTripleChecker+Valid, 2772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:59,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 198 Invalid, 3905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1133 Valid, 2772 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-06 22:08:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72524 states. [2023-11-06 22:09:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72524 to 59313. [2023-11-06 22:09:00,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59313 states, 59312 states have (on average 1.1094213649851632) internal successors, (65802), 59312 states have internal predecessors, (65802), 0 states have call successors, (0), 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 22:09:00,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59313 states to 59313 states and 65802 transitions. [2023-11-06 22:09:00,507 INFO L78 Accepts]: Start accepts. Automaton has 59313 states and 65802 transitions. Word has length 576 [2023-11-06 22:09:00,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:00,508 INFO L495 AbstractCegarLoop]: Abstraction has 59313 states and 65802 transitions. [2023-11-06 22:09:00,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 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 22:09:00,509 INFO L276 IsEmpty]: Start isEmpty. Operand 59313 states and 65802 transitions. [2023-11-06 22:09:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2023-11-06 22:09:00,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:00,563 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:00,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:09:00,780 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:00,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:00,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1817960429, now seen corresponding path program 1 times [2023-11-06 22:09:00,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:00,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502482658] [2023-11-06 22:09:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:00,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2023-11-06 22:09:01,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:01,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502482658] [2023-11-06 22:09:01,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502482658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:01,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:01,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:01,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629488788] [2023-11-06 22:09:01,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:01,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:01,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:01,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:01,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:01,427 INFO L87 Difference]: Start difference. First operand 59313 states and 65802 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 22:09:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:04,458 INFO L93 Difference]: Finished difference Result 127549 states and 141248 transitions. [2023-11-06 22:09:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:04,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 595 [2023-11-06 22:09:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:04,539 INFO L225 Difference]: With dead ends: 127549 [2023-11-06 22:09:04,539 INFO L226 Difference]: Without dead ends: 63120 [2023-11-06 22:09:04,579 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 22:09:04,580 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 496 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:04,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 713 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 22:09:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63120 states. [2023-11-06 22:09:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63120 to 61836. [2023-11-06 22:09:05,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61836 states, 61835 states have (on average 1.0959165521144982) internal successors, (67766), 61835 states have internal predecessors, (67766), 0 states have call successors, (0), 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 22:09:05,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61836 states to 61836 states and 67766 transitions. [2023-11-06 22:09:05,786 INFO L78 Accepts]: Start accepts. Automaton has 61836 states and 67766 transitions. Word has length 595 [2023-11-06 22:09:05,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:05,787 INFO L495 AbstractCegarLoop]: Abstraction has 61836 states and 67766 transitions. [2023-11-06 22:09:05,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 22:09:05,787 INFO L276 IsEmpty]: Start isEmpty. Operand 61836 states and 67766 transitions. [2023-11-06 22:09:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2023-11-06 22:09:05,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:05,825 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:05,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:09:05,825 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:05,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:05,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1902944485, now seen corresponding path program 1 times [2023-11-06 22:09:05,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:05,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623643136] [2023-11-06 22:09:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:05,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-06 22:09:07,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:07,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623643136] [2023-11-06 22:09:07,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623643136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:07,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:07,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:07,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063773922] [2023-11-06 22:09:07,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:07,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:07,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:07,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:07,688 INFO L87 Difference]: Start difference. First operand 61836 states and 67766 transitions. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 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 22:09:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:09,863 INFO L93 Difference]: Finished difference Result 123668 states and 135528 transitions. [2023-11-06 22:09:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:09,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 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 619 [2023-11-06 22:09:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:09,934 INFO L225 Difference]: With dead ends: 123668 [2023-11-06 22:09:09,934 INFO L226 Difference]: Without dead ends: 61834 [2023-11-06 22:09:09,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 22:09:09,965 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 574 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:09,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 556 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 22:09:10,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61834 states. [2023-11-06 22:09:10,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61834 to 61834. [2023-11-06 22:09:10,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61834 states, 61833 states have (on average 1.095741756020248) internal successors, (67753), 61833 states have internal predecessors, (67753), 0 states have call successors, (0), 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 22:09:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61834 states to 61834 states and 67753 transitions. [2023-11-06 22:09:11,045 INFO L78 Accepts]: Start accepts. Automaton has 61834 states and 67753 transitions. Word has length 619 [2023-11-06 22:09:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:11,046 INFO L495 AbstractCegarLoop]: Abstraction has 61834 states and 67753 transitions. [2023-11-06 22:09:11,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 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 22:09:11,047 INFO L276 IsEmpty]: Start isEmpty. Operand 61834 states and 67753 transitions. [2023-11-06 22:09:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2023-11-06 22:09:11,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:11,088 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:11,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:09:11,089 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:11,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:11,090 INFO L85 PathProgramCache]: Analyzing trace with hash 916045869, now seen corresponding path program 1 times [2023-11-06 22:09:11,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:11,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283151799] [2023-11-06 22:09:11,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:11,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2023-11-06 22:09:11,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:11,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283151799] [2023-11-06 22:09:11,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283151799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:11,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:11,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325734969] [2023-11-06 22:09:11,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:11,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:11,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:11,818 INFO L87 Difference]: Start difference. First operand 61834 states and 67753 transitions. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 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 22:09:14,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:14,477 INFO L93 Difference]: Finished difference Result 128772 states and 140948 transitions. [2023-11-06 22:09:14,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:14,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 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 709 [2023-11-06 22:09:14,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:14,548 INFO L225 Difference]: With dead ends: 128772 [2023-11-06 22:09:14,549 INFO L226 Difference]: Without dead ends: 66940 [2023-11-06 22:09:14,576 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 22:09:14,576 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 443 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:14,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 387 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 22:09:14,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66940 states. [2023-11-06 22:09:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66940 to 61829. [2023-11-06 22:09:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61829 states, 61828 states have (on average 1.0950054991266094) internal successors, (67702), 61828 states have internal predecessors, (67702), 0 states have call successors, (0), 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 22:09:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61829 states to 61829 states and 67702 transitions. [2023-11-06 22:09:15,729 INFO L78 Accepts]: Start accepts. Automaton has 61829 states and 67702 transitions. Word has length 709 [2023-11-06 22:09:15,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:15,730 INFO L495 AbstractCegarLoop]: Abstraction has 61829 states and 67702 transitions. [2023-11-06 22:09:15,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 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 22:09:15,731 INFO L276 IsEmpty]: Start isEmpty. Operand 61829 states and 67702 transitions. [2023-11-06 22:09:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2023-11-06 22:09:15,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:15,773 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:09:15,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:09:15,773 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:15,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:15,774 INFO L85 PathProgramCache]: Analyzing trace with hash -614147379, now seen corresponding path program 1 times [2023-11-06 22:09:15,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:15,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248502913] [2023-11-06 22:09:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:15,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 618 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-06 22:09:17,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248502913] [2023-11-06 22:09:17,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248502913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:17,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:17,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:17,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344967515] [2023-11-06 22:09:17,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:17,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:09:17,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:17,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:09:17,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:09:17,043 INFO L87 Difference]: Start difference. First operand 61829 states and 67702 transitions. Second operand has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 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 22:09:21,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:21,520 INFO L93 Difference]: Finished difference Result 149204 states and 162811 transitions. [2023-11-06 22:09:21,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:09:21,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 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 735 [2023-11-06 22:09:21,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:21,598 INFO L225 Difference]: With dead ends: 149204 [2023-11-06 22:09:21,598 INFO L226 Difference]: Without dead ends: 83551 [2023-11-06 22:09:21,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 22:09:21,627 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 649 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:21,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 207 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-06 22:09:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83551 states. [2023-11-06 22:09:22,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83551 to 61811. [2023-11-06 22:09:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61811 states, 61810 states have (on average 1.095049344766219) internal successors, (67685), 61810 states have internal predecessors, (67685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61811 states to 61811 states and 67685 transitions. [2023-11-06 22:09:22,825 INFO L78 Accepts]: Start accepts. Automaton has 61811 states and 67685 transitions. Word has length 735 [2023-11-06 22:09:22,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:22,826 INFO L495 AbstractCegarLoop]: Abstraction has 61811 states and 67685 transitions. [2023-11-06 22:09:22,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 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 22:09:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 61811 states and 67685 transitions. [2023-11-06 22:09:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-06 22:09:22,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:22,884 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:22,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:09:22,885 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:22,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:22,886 INFO L85 PathProgramCache]: Analyzing trace with hash -568181373, now seen corresponding path program 1 times [2023-11-06 22:09:22,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:22,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683397339] [2023-11-06 22:09:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:22,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2023-11-06 22:09:23,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:23,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683397339] [2023-11-06 22:09:23,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683397339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:23,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:23,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:23,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352714776] [2023-11-06 22:09:23,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:23,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:23,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:23,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:23,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:23,936 INFO L87 Difference]: Start difference. First operand 61811 states and 67685 transitions. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 22:09:26,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:26,443 INFO L93 Difference]: Finished difference Result 124458 states and 135975 transitions. [2023-11-06 22:09:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:26,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 786 [2023-11-06 22:09:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:26,528 INFO L225 Difference]: With dead ends: 124458 [2023-11-06 22:09:26,528 INFO L226 Difference]: Without dead ends: 60944 [2023-11-06 22:09:26,556 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 22:09:26,557 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 455 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:26,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 734 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 22:09:26,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60944 states. [2023-11-06 22:09:27,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60944 to 59241. [2023-11-06 22:09:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59241 states, 59240 states have (on average 1.0825455773126267) internal successors, (64130), 59240 states have internal predecessors, (64130), 0 states have call successors, (0), 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 22:09:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59241 states to 59241 states and 64130 transitions. [2023-11-06 22:09:27,783 INFO L78 Accepts]: Start accepts. Automaton has 59241 states and 64130 transitions. Word has length 786 [2023-11-06 22:09:27,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:27,784 INFO L495 AbstractCegarLoop]: Abstraction has 59241 states and 64130 transitions. [2023-11-06 22:09:27,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 22:09:27,786 INFO L276 IsEmpty]: Start isEmpty. Operand 59241 states and 64130 transitions. [2023-11-06 22:09:27,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2023-11-06 22:09:27,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:27,827 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:27,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:09:27,828 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:27,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:27,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1008494551, now seen corresponding path program 1 times [2023-11-06 22:09:27,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:27,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638747302] [2023-11-06 22:09:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:27,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 1028 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-11-06 22:09:29,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:29,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638747302] [2023-11-06 22:09:29,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638747302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:29,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:29,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:29,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471101566] [2023-11-06 22:09:29,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:29,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:09:29,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:29,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:09:29,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:09:29,202 INFO L87 Difference]: Start difference. First operand 59241 states and 64130 transitions. Second operand has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 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 22:09:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:33,387 INFO L93 Difference]: Finished difference Result 139797 states and 151339 transitions. [2023-11-06 22:09:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:09:33,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 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 865 [2023-11-06 22:09:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:33,477 INFO L225 Difference]: With dead ends: 139797 [2023-11-06 22:09:33,477 INFO L226 Difference]: Without dead ends: 80558 [2023-11-06 22:09:33,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 22:09:33,495 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 755 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:33,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 162 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-06 22:09:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80558 states. [2023-11-06 22:09:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80558 to 75017. [2023-11-06 22:09:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75017 states, 75016 states have (on average 1.0833688813053215) internal successors, (81270), 75016 states have internal predecessors, (81270), 0 states have call successors, (0), 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 22:09:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75017 states to 75017 states and 81270 transitions. [2023-11-06 22:09:34,595 INFO L78 Accepts]: Start accepts. Automaton has 75017 states and 81270 transitions. Word has length 865 [2023-11-06 22:09:34,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:34,596 INFO L495 AbstractCegarLoop]: Abstraction has 75017 states and 81270 transitions. [2023-11-06 22:09:34,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 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 22:09:34,596 INFO L276 IsEmpty]: Start isEmpty. Operand 75017 states and 81270 transitions. [2023-11-06 22:09:34,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2023-11-06 22:09:34,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:34,636 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:09:34,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:09:34,637 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:34,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:34,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1743396571, now seen corresponding path program 1 times [2023-11-06 22:09:34,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:34,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129757198] [2023-11-06 22:09:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:34,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 478 proven. 694 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-06 22:09:36,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:36,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129757198] [2023-11-06 22:09:36,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129757198] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:36,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586855586] [2023-11-06 22:09:36,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:36,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:36,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:36,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:36,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:09:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:37,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:09:37,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 943 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2023-11-06 22:09:37,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:37,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586855586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:37,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:09:37,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-06 22:09:37,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585257374] [2023-11-06 22:09:37,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:37,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:37,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:37,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:37,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:09:37,958 INFO L87 Difference]: Start difference. First operand 75017 states and 81270 transitions. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 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 22:09:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:40,352 INFO L93 Difference]: Finished difference Result 150031 states and 162537 transitions. [2023-11-06 22:09:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:40,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 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 909 [2023-11-06 22:09:40,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:40,436 INFO L225 Difference]: With dead ends: 150031 [2023-11-06 22:09:40,436 INFO L226 Difference]: Without dead ends: 75016 [2023-11-06 22:09:40,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 909 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:09:40,470 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 218 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:40,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 671 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 22:09:40,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75016 states. [2023-11-06 22:09:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75016 to 72887. [2023-11-06 22:09:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72887 states, 72886 states have (on average 1.0700546058227918) internal successors, (77992), 72886 states have internal predecessors, (77992), 0 states have call successors, (0), 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 22:09:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72887 states to 72887 states and 77992 transitions. [2023-11-06 22:09:41,818 INFO L78 Accepts]: Start accepts. Automaton has 72887 states and 77992 transitions. Word has length 909 [2023-11-06 22:09:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:41,819 INFO L495 AbstractCegarLoop]: Abstraction has 72887 states and 77992 transitions. [2023-11-06 22:09:41,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 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 22:09:41,820 INFO L276 IsEmpty]: Start isEmpty. Operand 72887 states and 77992 transitions. [2023-11-06 22:09:41,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2023-11-06 22:09:41,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:41,892 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:41,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:42,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64633b2f-db06-482e-8dd4-671c506d4c97/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:42,099 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:42,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1742905758, now seen corresponding path program 1 times [2023-11-06 22:09:42,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:42,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282612861] [2023-11-06 22:09:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:42,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 996 proven. 0 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2023-11-06 22:09:42,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:42,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282612861] [2023-11-06 22:09:42,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282612861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:42,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:42,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:09:42,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716340399] [2023-11-06 22:09:42,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:42,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:42,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:42,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:42,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:42,943 INFO L87 Difference]: Start difference. First operand 72887 states and 77992 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 2 states have internal predecessors, (442), 0 states have call successors, (0), 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 22:09:44,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:44,820 INFO L93 Difference]: Finished difference Result 129985 states and 139013 transitions. [2023-11-06 22:09:44,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:44,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 2 states have internal predecessors, (442), 0 states have call successors, (0), 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 970 [2023-11-06 22:09:44,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:44,881 INFO L225 Difference]: With dead ends: 129985 [2023-11-06 22:09:44,881 INFO L226 Difference]: Without dead ends: 57099 [2023-11-06 22:09:44,905 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 22:09:44,906 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 557 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:44,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 71 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:09:44,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57099 states. [2023-11-06 22:09:45,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57099 to 56246. [2023-11-06 22:09:45,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56246 states, 56245 states have (on average 1.0683260734287492) internal successors, (60088), 56245 states have internal predecessors, (60088), 0 states have call successors, (0), 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 22:09:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56246 states to 56246 states and 60088 transitions. [2023-11-06 22:09:45,900 INFO L78 Accepts]: Start accepts. Automaton has 56246 states and 60088 transitions. Word has length 970 [2023-11-06 22:09:45,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:45,900 INFO L495 AbstractCegarLoop]: Abstraction has 56246 states and 60088 transitions. [2023-11-06 22:09:45,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 2 states have internal predecessors, (442), 0 states have call successors, (0), 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 22:09:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 56246 states and 60088 transitions. [2023-11-06 22:09:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2023-11-06 22:09:45,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:45,942 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:45,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:09:45,942 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:45,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:45,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1682092445, now seen corresponding path program 1 times [2023-11-06 22:09:45,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:45,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290739663] [2023-11-06 22:09:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:45,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1904 backedges. 1327 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2023-11-06 22:09:47,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:47,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290739663] [2023-11-06 22:09:47,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290739663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:47,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:47,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:47,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054315366] [2023-11-06 22:09:47,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:47,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:09:47,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:47,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:09:47,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:09:47,463 INFO L87 Difference]: Start difference. First operand 56246 states and 60088 transitions. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 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 22:09:51,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:51,646 INFO L93 Difference]: Finished difference Result 123552 states and 131989 transitions. [2023-11-06 22:09:51,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:09:51,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 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 999 [2023-11-06 22:09:51,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:51,732 INFO L225 Difference]: With dead ends: 123552 [2023-11-06 22:09:51,732 INFO L226 Difference]: Without dead ends: 67308 [2023-11-06 22:09:51,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:09:51,762 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 611 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:51,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 288 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-06 22:09:51,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67308 states. [2023-11-06 22:09:52,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67308 to 62625. [2023-11-06 22:09:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62625 states, 62624 states have (on average 1.0612864077669903) internal successors, (66462), 62624 states have internal predecessors, (66462), 0 states have call successors, (0), 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 22:09:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62625 states to 62625 states and 66462 transitions. [2023-11-06 22:09:52,860 INFO L78 Accepts]: Start accepts. Automaton has 62625 states and 66462 transitions. Word has length 999 [2023-11-06 22:09:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:52,861 INFO L495 AbstractCegarLoop]: Abstraction has 62625 states and 66462 transitions. [2023-11-06 22:09:52,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 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 22:09:52,862 INFO L276 IsEmpty]: Start isEmpty. Operand 62625 states and 66462 transitions. [2023-11-06 22:09:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2023-11-06 22:09:52,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:52,905 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:09:52,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:09:52,905 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:52,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:52,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1317435272, now seen corresponding path program 1 times [2023-11-06 22:09:52,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:52,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714898901] [2023-11-06 22:09:52,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:52,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:54,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1597 backedges. 1278 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2023-11-06 22:09:54,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:54,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714898901] [2023-11-06 22:09:54,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714898901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:54,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:54,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:54,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178635663] [2023-11-06 22:09:54,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:54,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:09:54,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:54,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:09:54,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:09:54,060 INFO L87 Difference]: Start difference. First operand 62625 states and 66462 transitions. Second operand has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 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 22:09:58,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:58,317 INFO L93 Difference]: Finished difference Result 143959 states and 152424 transitions. [2023-11-06 22:09:58,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:09:58,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 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 1072 [2023-11-06 22:09:58,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:58,401 INFO L225 Difference]: With dead ends: 143959 [2023-11-06 22:09:58,401 INFO L226 Difference]: Without dead ends: 80484 [2023-11-06 22:09:58,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 22:09:58,419 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 623 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:58,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 637 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-06 22:09:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80484 states. [2023-11-06 22:09:59,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80484 to 63472. [2023-11-06 22:09:59,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63472 states, 63471 states have (on average 1.0570339210032929) internal successors, (67091), 63471 states have internal predecessors, (67091), 0 states have call successors, (0), 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 22:09:59,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63472 states to 63472 states and 67091 transitions. [2023-11-06 22:09:59,554 INFO L78 Accepts]: Start accepts. Automaton has 63472 states and 67091 transitions. Word has length 1072 [2023-11-06 22:09:59,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:59,555 INFO L495 AbstractCegarLoop]: Abstraction has 63472 states and 67091 transitions. [2023-11-06 22:09:59,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 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 22:09:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 63472 states and 67091 transitions. [2023-11-06 22:09:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2023-11-06 22:09:59,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:59,604 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 22:09:59,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:09:59,604 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:59,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:59,605 INFO L85 PathProgramCache]: Analyzing trace with hash -868002975, now seen corresponding path program 1 times [2023-11-06 22:09:59,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:59,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205032336] [2023-11-06 22:09:59,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:59,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1599 backedges. 1170 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2023-11-06 22:10:01,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:01,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205032336] [2023-11-06 22:10:01,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205032336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:01,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:01,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:10:01,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790600207] [2023-11-06 22:10:01,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:01,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:01,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:01,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:01,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:01,457 INFO L87 Difference]: Start difference. First operand 63472 states and 67091 transitions. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 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 22:10:04,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:10:04,038 INFO L93 Difference]: Finished difference Result 128646 states and 135940 transitions. [2023-11-06 22:10:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:04,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 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 1079 [2023-11-06 22:10:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:10:04,107 INFO L225 Difference]: With dead ends: 128646 [2023-11-06 22:10:04,107 INFO L226 Difference]: Without dead ends: 65176 [2023-11-06 22:10:04,125 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 22:10:04,126 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 113 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:10:04,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 713 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-06 22:10:04,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65176 states. [2023-11-06 22:10:04,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65176 to 60921. [2023-11-06 22:10:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60921 states, 60920 states have (on average 1.0572390019697964) internal successors, (64407), 60920 states have internal predecessors, (64407), 0 states have call successors, (0), 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 22:10:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60921 states to 60921 states and 64407 transitions. [2023-11-06 22:10:04,871 INFO L78 Accepts]: Start accepts. Automaton has 60921 states and 64407 transitions. Word has length 1079 [2023-11-06 22:10:04,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:10:04,872 INFO L495 AbstractCegarLoop]: Abstraction has 60921 states and 64407 transitions. [2023-11-06 22:10:04,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 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 22:10:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 60921 states and 64407 transitions. [2023-11-06 22:10:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1233 [2023-11-06 22:10:05,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:10:05,193 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 22:10:05,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:10:05,194 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:10:05,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:05,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1536166241, now seen corresponding path program 1 times [2023-11-06 22:10:05,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:05,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111795933] [2023-11-06 22:10:05,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:05,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 1233 proven. 0 refuted. 0 times theorem prover too weak. 1041 trivial. 0 not checked. [2023-11-06 22:10:06,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111795933] [2023-11-06 22:10:06,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111795933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:06,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:06,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:10:06,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854145190] [2023-11-06 22:10:06,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:06,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:06,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:06,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:06,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:06,325 INFO L87 Difference]: Start difference. First operand 60921 states and 64407 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 22:10:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:10:08,947 INFO L93 Difference]: Finished difference Result 129515 states and 136895 transitions. [2023-11-06 22:10:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:08,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 1232 [2023-11-06 22:10:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:10:09,018 INFO L225 Difference]: With dead ends: 129515 [2023-11-06 22:10:09,018 INFO L226 Difference]: Without dead ends: 68596 [2023-11-06 22:10:09,047 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 22:10:09,048 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 403 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:10:09,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 224 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 22:10:09,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68596 states. [2023-11-06 22:10:10,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68596 to 65179. [2023-11-06 22:10:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65179 states, 65178 states have (on average 1.056092546564792) internal successors, (68834), 65178 states have internal predecessors, (68834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)