./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem18_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/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_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem18_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/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_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/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 c626e4c9f6513844bf7d51bb173012ea230226871c7268fdff12ea42500a40a8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:54:07,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:54:07,660 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:54:07,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:54:07,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:54:07,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:54:07,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:54:07,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:54:07,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:54:07,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:54:07,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:54:07,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:54:07,696 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:54:07,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:54:07,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:54:07,697 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:54:07,698 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:54:07,698 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:54:07,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:54:07,700 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:54:07,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:54:07,701 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:54:07,701 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:54:07,702 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:54:07,703 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:54:07,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:54:07,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:54:07,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:54:07,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:07,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:54:07,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:54:07,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:54:07,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:54:07,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:54:07,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:54:07,708 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:54:07,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:54:07,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:54:07,709 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:54:07,710 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_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c626e4c9f6513844bf7d51bb173012ea230226871c7268fdff12ea42500a40a8 [2023-11-06 21:54:07,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:54:07,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:54:07,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:54:07,965 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:54:07,965 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:54:07,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/eca-rers2012/Problem18_label08.c [2023-11-06 21:54:11,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:54:11,605 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:54:11,605 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/sv-benchmarks/c/eca-rers2012/Problem18_label08.c [2023-11-06 21:54:11,634 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/data/598a3cb88/85dd314fad554842972670049bc9c3d5/FLAG2b400094c [2023-11-06 21:54:11,652 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/data/598a3cb88/85dd314fad554842972670049bc9c3d5 [2023-11-06 21:54:11,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:54:11,663 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:54:11,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:11,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:54:11,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:54:11,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:54:11" (1/1) ... [2023-11-06 21:54:11,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7e1d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:11, skipping insertion in model container [2023-11-06 21:54:11,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:54:11" (1/1) ... [2023-11-06 21:54:11,803 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:54:12,082 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_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/sv-benchmarks/c/eca-rers2012/Problem18_label08.c[2490,2503] [2023-11-06 21:54:12,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:12,921 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:54:12,939 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_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/sv-benchmarks/c/eca-rers2012/Problem18_label08.c[2490,2503] [2023-11-06 21:54:13,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:13,400 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:54:13,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13 WrapperNode [2023-11-06 21:54:13,400 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:13,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:13,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:54:13,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:54:13,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:13,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:13,683 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4133 [2023-11-06 21:54:13,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:13,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:54:13,685 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:54:13,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:54:13,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:13,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:13,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:13,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:13,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:13,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:13,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:13,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:14,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:54:14,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:54:14,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:54:14,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:54:14,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:14,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:14,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:14,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:54:14,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:54:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:54:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:54:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:54:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:54:14,224 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:54:14,227 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:54:18,291 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:54:18,314 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:54:18,314 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:54:18,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:18 BoogieIcfgContainer [2023-11-06 21:54:18,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:54:18,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:54:18,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:54:18,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:54:18,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:54:11" (1/3) ... [2023-11-06 21:54:18,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f16d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:18, skipping insertion in model container [2023-11-06 21:54:18,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13" (2/3) ... [2023-11-06 21:54:18,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f16d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:18, skipping insertion in model container [2023-11-06 21:54:18,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:18" (3/3) ... [2023-11-06 21:54:18,333 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label08.c [2023-11-06 21:54:18,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:54:18,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:54:18,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:54:18,452 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;@735c77cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:54:18,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:54:18,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 21:54:18,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-06 21:54:18,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:18,473 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] [2023-11-06 21:54:18,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:18,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:18,485 INFO L85 PathProgramCache]: Analyzing trace with hash -85512855, now seen corresponding path program 1 times [2023-11-06 21:54:18,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:18,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364157854] [2023-11-06 21:54:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:18,739 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 21:54:18,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:18,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364157854] [2023-11-06 21:54:18,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364157854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:18,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:18,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:18,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189901388] [2023-11-06 21:54:18,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:18,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:18,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:18,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:18,799 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21:54:23,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:23,160 INFO L93 Difference]: Finished difference Result 2205 states and 4266 transitions. [2023-11-06 21:54:23,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:23,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-11-06 21:54:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:23,191 INFO L225 Difference]: With dead ends: 2205 [2023-11-06 21:54:23,191 INFO L226 Difference]: Without dead ends: 1384 [2023-11-06 21:54:23,199 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 21:54:23,202 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 727 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:23,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 291 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-06 21:54:23,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2023-11-06 21:54:23,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2023-11-06 21:54:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.7339117859725235) internal successors, (2398), 1383 states have internal predecessors, (2398), 0 states have call successors, (0), 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 21:54:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2398 transitions. [2023-11-06 21:54:23,355 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2398 transitions. Word has length 21 [2023-11-06 21:54:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:23,356 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2398 transitions. [2023-11-06 21:54:23,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21:54:23,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2398 transitions. [2023-11-06 21:54:23,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 21:54:23,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:23,364 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 21:54:23,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:54:23,365 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:23,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:23,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1708543204, now seen corresponding path program 1 times [2023-11-06 21:54:23,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:23,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742685421] [2023-11-06 21:54:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:23,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:23,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:23,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742685421] [2023-11-06 21:54:23,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742685421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:23,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:23,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:23,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076160970] [2023-11-06 21:54:23,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:23,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:23,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:23,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:23,721 INFO L87 Difference]: Start difference. First operand 1384 states and 2398 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 21:54:29,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:29,342 INFO L93 Difference]: Finished difference Result 4842 states and 8275 transitions. [2023-11-06 21:54:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:29,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-11-06 21:54:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:29,365 INFO L225 Difference]: With dead ends: 4842 [2023-11-06 21:54:29,365 INFO L226 Difference]: Without dead ends: 3460 [2023-11-06 21:54:29,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:29,377 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 2036 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 1420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 4688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1420 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:29,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 135 Invalid, 4688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1420 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-06 21:54:29,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2023-11-06 21:54:29,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3454. [2023-11-06 21:54:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 3453 states have (on average 1.5409788589632203) internal successors, (5321), 3453 states have internal predecessors, (5321), 0 states have call successors, (0), 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 21:54:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 5321 transitions. [2023-11-06 21:54:29,487 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 5321 transitions. Word has length 90 [2023-11-06 21:54:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:29,488 INFO L495 AbstractCegarLoop]: Abstraction has 3454 states and 5321 transitions. [2023-11-06 21:54:29,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 21:54:29,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 5321 transitions. [2023-11-06 21:54:29,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-06 21:54:29,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:29,496 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 21:54:29,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:54:29,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:29,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:29,508 INFO L85 PathProgramCache]: Analyzing trace with hash -403667391, now seen corresponding path program 1 times [2023-11-06 21:54:29,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:29,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339376868] [2023-11-06 21:54:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:29,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:30,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:30,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339376868] [2023-11-06 21:54:30,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339376868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:30,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:30,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:30,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893061865] [2023-11-06 21:54:30,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:30,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:30,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:30,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:30,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:30,124 INFO L87 Difference]: Start difference. First operand 3454 states and 5321 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 21:54:35,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:35,763 INFO L93 Difference]: Finished difference Result 11046 states and 17165 transitions. [2023-11-06 21:54:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:35,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2023-11-06 21:54:35,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:35,807 INFO L225 Difference]: With dead ends: 11046 [2023-11-06 21:54:35,808 INFO L226 Difference]: Without dead ends: 7594 [2023-11-06 21:54:35,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:35,814 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1873 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 5006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:35,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 647 Invalid, 5006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-06 21:54:35,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7594 states. [2023-11-06 21:54:35,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7594 to 6904. [2023-11-06 21:54:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 6903 states have (on average 1.3271041576126321) internal successors, (9161), 6903 states have internal predecessors, (9161), 0 states have call successors, (0), 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 21:54:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 9161 transitions. [2023-11-06 21:54:36,002 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 9161 transitions. Word has length 139 [2023-11-06 21:54:36,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:36,007 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 9161 transitions. [2023-11-06 21:54:36,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 21:54:36,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 9161 transitions. [2023-11-06 21:54:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-11-06 21:54:36,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:36,016 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:36,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:54:36,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:36,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:36,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1543844096, now seen corresponding path program 1 times [2023-11-06 21:54:36,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:36,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274873836] [2023-11-06 21:54:36,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:36,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:36,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274873836] [2023-11-06 21:54:36,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274873836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:36,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:36,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:36,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887382899] [2023-11-06 21:54:36,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:36,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:36,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:36,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:36,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:36,704 INFO L87 Difference]: Start difference. First operand 6904 states and 9161 transitions. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 21:54:40,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:40,719 INFO L93 Difference]: Finished difference Result 16619 states and 22100 transitions. [2023-11-06 21:54:40,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:40,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 280 [2023-11-06 21:54:40,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:40,770 INFO L225 Difference]: With dead ends: 16619 [2023-11-06 21:54:40,770 INFO L226 Difference]: Without dead ends: 9664 [2023-11-06 21:54:40,778 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 21:54:40,779 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 513 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 3726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:40,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 637 Invalid, 3726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 3037 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-06 21:54:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9664 states. [2023-11-06 21:54:40,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9664 to 8974. [2023-11-06 21:54:40,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8974 states, 8973 states have (on average 1.1909060514877967) internal successors, (10686), 8973 states have internal predecessors, (10686), 0 states have call successors, (0), 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 21:54:40,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8974 states to 8974 states and 10686 transitions. [2023-11-06 21:54:40,987 INFO L78 Accepts]: Start accepts. Automaton has 8974 states and 10686 transitions. Word has length 280 [2023-11-06 21:54:40,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:40,988 INFO L495 AbstractCegarLoop]: Abstraction has 8974 states and 10686 transitions. [2023-11-06 21:54:40,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 21:54:40,990 INFO L276 IsEmpty]: Start isEmpty. Operand 8974 states and 10686 transitions. [2023-11-06 21:54:41,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2023-11-06 21:54:41,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:41,016 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:54:41,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:54:41,017 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:41,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:41,018 INFO L85 PathProgramCache]: Analyzing trace with hash 136235985, now seen corresponding path program 1 times [2023-11-06 21:54:41,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:41,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878195487] [2023-11-06 21:54:41,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:41,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-06 21:54:42,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878195487] [2023-11-06 21:54:42,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878195487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:42,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:42,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:42,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262799280] [2023-11-06 21:54:42,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:42,157 INFO L87 Difference]: Start difference. First operand 8974 states and 10686 transitions. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 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 21:54:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:45,107 INFO L93 Difference]: Finished difference Result 21396 states and 25762 transitions. [2023-11-06 21:54:45,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:45,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 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 835 [2023-11-06 21:54:45,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:45,159 INFO L225 Difference]: With dead ends: 21396 [2023-11-06 21:54:45,160 INFO L226 Difference]: Without dead ends: 12424 [2023-11-06 21:54:45,169 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 21:54:45,170 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 691 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:45,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 115 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 1866 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-06 21:54:45,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12424 states. [2023-11-06 21:54:45,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12424 to 11734. [2023-11-06 21:54:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11734 states, 11733 states have (on average 1.2112844114889627) internal successors, (14212), 11733 states have internal predecessors, (14212), 0 states have call successors, (0), 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 21:54:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11734 states to 11734 states and 14212 transitions. [2023-11-06 21:54:45,410 INFO L78 Accepts]: Start accepts. Automaton has 11734 states and 14212 transitions. Word has length 835 [2023-11-06 21:54:45,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:45,412 INFO L495 AbstractCegarLoop]: Abstraction has 11734 states and 14212 transitions. [2023-11-06 21:54:45,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 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 21:54:45,413 INFO L276 IsEmpty]: Start isEmpty. Operand 11734 states and 14212 transitions. [2023-11-06 21:54:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2023-11-06 21:54:45,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:45,450 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:54:45,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:54:45,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:45,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:45,451 INFO L85 PathProgramCache]: Analyzing trace with hash 138416689, now seen corresponding path program 1 times [2023-11-06 21:54:45,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:45,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946805704] [2023-11-06 21:54:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:45,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-06 21:54:46,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:46,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946805704] [2023-11-06 21:54:46,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946805704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:46,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490025422] [2023-11-06 21:54:46,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:46,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:46,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:46,713 INFO L87 Difference]: Start difference. First operand 11734 states and 14212 transitions. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 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 21:54:49,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:49,660 INFO L93 Difference]: Finished difference Result 28296 states and 35364 transitions. [2023-11-06 21:54:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:49,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 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 905 [2023-11-06 21:54:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:49,694 INFO L225 Difference]: With dead ends: 28296 [2023-11-06 21:54:49,695 INFO L226 Difference]: Without dead ends: 16564 [2023-11-06 21:54:49,707 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 21:54:49,708 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 215 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:49,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 407 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-06 21:54:49,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16564 states. [2023-11-06 21:54:49,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16564 to 13804. [2023-11-06 21:54:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13804 states, 13803 states have (on average 1.1922045932043759) internal successors, (16456), 13803 states have internal predecessors, (16456), 0 states have call successors, (0), 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 21:54:49,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13804 states to 13804 states and 16456 transitions. [2023-11-06 21:54:49,947 INFO L78 Accepts]: Start accepts. Automaton has 13804 states and 16456 transitions. Word has length 905 [2023-11-06 21:54:49,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:49,949 INFO L495 AbstractCegarLoop]: Abstraction has 13804 states and 16456 transitions. [2023-11-06 21:54:49,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 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 21:54:49,949 INFO L276 IsEmpty]: Start isEmpty. Operand 13804 states and 16456 transitions. [2023-11-06 21:54:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2023-11-06 21:54:49,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:49,962 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:54:49,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:54:49,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:49,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash -944009052, now seen corresponding path program 1 times [2023-11-06 21:54:49,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:49,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621034351] [2023-11-06 21:54:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:49,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2023-11-06 21:54:51,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:51,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621034351] [2023-11-06 21:54:51,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621034351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:51,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:51,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:51,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806601609] [2023-11-06 21:54:51,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:51,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:51,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:51,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:51,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:51,099 INFO L87 Difference]: Start difference. First operand 13804 states and 16456 transitions. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 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 21:54:53,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:53,861 INFO L93 Difference]: Finished difference Result 32436 states and 38835 transitions. [2023-11-06 21:54:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:53,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 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 920 [2023-11-06 21:54:53,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:53,968 INFO L225 Difference]: With dead ends: 32436 [2023-11-06 21:54:53,969 INFO L226 Difference]: Without dead ends: 18634 [2023-11-06 21:54:53,979 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 21:54:53,980 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:53,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 82 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 21:54:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18634 states. [2023-11-06 21:54:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18634 to 18634. [2023-11-06 21:54:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18634 states, 18633 states have (on average 1.1818816078999623) internal successors, (22022), 18633 states have internal predecessors, (22022), 0 states have call successors, (0), 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 21:54:54,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18634 states to 18634 states and 22022 transitions. [2023-11-06 21:54:54,244 INFO L78 Accepts]: Start accepts. Automaton has 18634 states and 22022 transitions. Word has length 920 [2023-11-06 21:54:54,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:54,246 INFO L495 AbstractCegarLoop]: Abstraction has 18634 states and 22022 transitions. [2023-11-06 21:54:54,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 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 21:54:54,247 INFO L276 IsEmpty]: Start isEmpty. Operand 18634 states and 22022 transitions. [2023-11-06 21:54:54,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2023-11-06 21:54:54,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:54,259 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:54:54,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:54:54,260 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:54,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:54,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1066004903, now seen corresponding path program 1 times [2023-11-06 21:54:54,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:54,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058679912] [2023-11-06 21:54:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:54,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-11-06 21:54:55,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:55,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058679912] [2023-11-06 21:54:55,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058679912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:55,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:55,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:55,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909277940] [2023-11-06 21:54:55,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:55,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:55,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:55,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:55,385 INFO L87 Difference]: Start difference. First operand 18634 states and 22022 transitions. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 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 21:54:57,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:57,971 INFO L93 Difference]: Finished difference Result 36576 states and 43348 transitions. [2023-11-06 21:54:57,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:57,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 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 921 [2023-11-06 21:54:57,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:58,005 INFO L225 Difference]: With dead ends: 36576 [2023-11-06 21:54:58,005 INFO L226 Difference]: Without dead ends: 17944 [2023-11-06 21:54:58,021 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 21:54:58,022 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 675 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:58,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 1091 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 21:54:58,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17944 states. [2023-11-06 21:54:58,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17944 to 17944. [2023-11-06 21:54:58,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17944 states, 17943 states have (on average 1.143175611659143) internal successors, (20512), 17943 states have internal predecessors, (20512), 0 states have call successors, (0), 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 21:54:58,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17944 states to 17944 states and 20512 transitions. [2023-11-06 21:54:58,343 INFO L78 Accepts]: Start accepts. Automaton has 17944 states and 20512 transitions. Word has length 921 [2023-11-06 21:54:58,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:58,344 INFO L495 AbstractCegarLoop]: Abstraction has 17944 states and 20512 transitions. [2023-11-06 21:54:58,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 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 21:54:58,345 INFO L276 IsEmpty]: Start isEmpty. Operand 17944 states and 20512 transitions. [2023-11-06 21:54:58,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2023-11-06 21:54:58,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:58,356 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:54:58,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:54:58,357 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:58,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:58,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1433936245, now seen corresponding path program 1 times [2023-11-06 21:54:58,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:58,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785684995] [2023-11-06 21:54:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:58,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-11-06 21:54:59,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:59,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785684995] [2023-11-06 21:54:59,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785684995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:59,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623313559] [2023-11-06 21:54:59,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:59,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:59,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:59,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:55:00,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:55:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:00,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:55:00,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:01,880 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2023-11-06 21:55:01,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:55:01,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623313559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:01,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:55:01,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-06 21:55:01,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829524291] [2023-11-06 21:55:01,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:01,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:01,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:01,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:55:01,886 INFO L87 Difference]: Start difference. First operand 17944 states and 20512 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 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 21:55:04,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:04,617 INFO L93 Difference]: Finished difference Result 43476 states and 49696 transitions. [2023-11-06 21:55:04,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:04,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 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 974 [2023-11-06 21:55:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:04,662 INFO L225 Difference]: With dead ends: 43476 [2023-11-06 21:55:04,662 INFO L226 Difference]: Without dead ends: 25534 [2023-11-06 21:55:04,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 973 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:55:04,676 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 183 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:04,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 362 Invalid, 2268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1979 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 21:55:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25534 states. [2023-11-06 21:55:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25534 to 22084. [2023-11-06 21:55:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22084 states, 22083 states have (on average 1.1352171353529865) internal successors, (25069), 22083 states have internal predecessors, (25069), 0 states have call successors, (0), 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 21:55:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22084 states to 22084 states and 25069 transitions. [2023-11-06 21:55:04,992 INFO L78 Accepts]: Start accepts. Automaton has 22084 states and 25069 transitions. Word has length 974 [2023-11-06 21:55:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:04,993 INFO L495 AbstractCegarLoop]: Abstraction has 22084 states and 25069 transitions. [2023-11-06 21:55:04,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 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 21:55:04,994 INFO L276 IsEmpty]: Start isEmpty. Operand 22084 states and 25069 transitions. [2023-11-06 21:55:05,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2023-11-06 21:55:05,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:05,006 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:55:05,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:05,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:05,214 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:05,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:05,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1151136540, now seen corresponding path program 1 times [2023-11-06 21:55:05,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:05,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231856780] [2023-11-06 21:55:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:05,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2023-11-06 21:55:07,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:07,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231856780] [2023-11-06 21:55:07,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231856780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:07,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:07,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:07,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373384738] [2023-11-06 21:55:07,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:07,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:07,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:07,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:07,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:07,341 INFO L87 Difference]: Start difference. First operand 22084 states and 25069 transitions. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 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 21:55:09,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:09,740 INFO L93 Difference]: Finished difference Result 44166 states and 50136 transitions. [2023-11-06 21:55:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:09,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 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 1006 [2023-11-06 21:55:09,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:09,763 INFO L225 Difference]: With dead ends: 44166 [2023-11-06 21:55:09,763 INFO L226 Difference]: Without dead ends: 22084 [2023-11-06 21:55:09,774 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 21:55:09,775 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 776 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:09,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 780 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 21:55:09,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22084 states. [2023-11-06 21:55:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22084 to 22084. [2023-11-06 21:55:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22084 states, 22083 states have (on average 1.114386632251053) internal successors, (24609), 22083 states have internal predecessors, (24609), 0 states have call successors, (0), 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 21:55:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22084 states to 22084 states and 24609 transitions. [2023-11-06 21:55:10,168 INFO L78 Accepts]: Start accepts. Automaton has 22084 states and 24609 transitions. Word has length 1006 [2023-11-06 21:55:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:10,169 INFO L495 AbstractCegarLoop]: Abstraction has 22084 states and 24609 transitions. [2023-11-06 21:55:10,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 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 21:55:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 22084 states and 24609 transitions. [2023-11-06 21:55:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2023-11-06 21:55:10,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:10,193 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:55:10,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:55:10,193 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:10,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:10,194 INFO L85 PathProgramCache]: Analyzing trace with hash -607262804, now seen corresponding path program 1 times [2023-11-06 21:55:10,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:10,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402316246] [2023-11-06 21:55:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-06 21:55:11,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:11,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402316246] [2023-11-06 21:55:11,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402316246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:11,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:11,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:11,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004007576] [2023-11-06 21:55:11,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:11,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:11,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:11,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:11,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:11,878 INFO L87 Difference]: Start difference. First operand 22084 states and 24609 transitions. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 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 21:55:14,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:14,518 INFO L93 Difference]: Finished difference Result 44856 states and 49909 transitions. [2023-11-06 21:55:14,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:14,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 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 1037 [2023-11-06 21:55:14,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:14,544 INFO L225 Difference]: With dead ends: 44856 [2023-11-06 21:55:14,544 INFO L226 Difference]: Without dead ends: 22774 [2023-11-06 21:55:14,557 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 21:55:14,558 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 574 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:14,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1017 Invalid, 2243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 21:55:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2023-11-06 21:55:14,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 22774. [2023-11-06 21:55:14,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22774 states, 22773 states have (on average 1.0932683440916875) internal successors, (24897), 22773 states have internal predecessors, (24897), 0 states have call successors, (0), 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 21:55:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22774 states to 22774 states and 24897 transitions. [2023-11-06 21:55:14,841 INFO L78 Accepts]: Start accepts. Automaton has 22774 states and 24897 transitions. Word has length 1037 [2023-11-06 21:55:14,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:14,842 INFO L495 AbstractCegarLoop]: Abstraction has 22774 states and 24897 transitions. [2023-11-06 21:55:14,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 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 21:55:14,843 INFO L276 IsEmpty]: Start isEmpty. Operand 22774 states and 24897 transitions. [2023-11-06 21:55:14,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2023-11-06 21:55:14,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:14,856 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:55:14,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:55:14,856 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:14,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1642610505, now seen corresponding path program 1 times [2023-11-06 21:55:14,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:14,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216219630] [2023-11-06 21:55:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:14,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 439 proven. 578 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-06 21:55:16,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:16,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216219630] [2023-11-06 21:55:16,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216219630] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:55:16,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756704382] [2023-11-06 21:55:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:16,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:16,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:16,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:55:16,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:55:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:17,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:55:17,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2023-11-06 21:55:17,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:55:17,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756704382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:17,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:55:17,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-06 21:55:17,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737547252] [2023-11-06 21:55:17,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:17,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:17,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:17,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:17,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:55:17,504 INFO L87 Difference]: Start difference. First operand 22774 states and 24897 transitions. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 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 21:55:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:20,260 INFO L93 Difference]: Finished difference Result 53136 states and 58969 transitions. [2023-11-06 21:55:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:20,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 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 1073 [2023-11-06 21:55:20,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:20,305 INFO L225 Difference]: With dead ends: 53136 [2023-11-06 21:55:20,305 INFO L226 Difference]: Without dead ends: 30364 [2023-11-06 21:55:20,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1079 GetRequests, 1073 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:55:20,322 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 699 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:20,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 165 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 21:55:20,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30364 states. [2023-11-06 21:55:20,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30364 to 30364. [2023-11-06 21:55:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30364 states, 30363 states have (on average 1.096564898066726) internal successors, (33295), 30363 states have internal predecessors, (33295), 0 states have call successors, (0), 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 21:55:20,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30364 states to 30364 states and 33295 transitions. [2023-11-06 21:55:20,727 INFO L78 Accepts]: Start accepts. Automaton has 30364 states and 33295 transitions. Word has length 1073 [2023-11-06 21:55:20,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:20,727 INFO L495 AbstractCegarLoop]: Abstraction has 30364 states and 33295 transitions. [2023-11-06 21:55:20,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 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 21:55:20,728 INFO L276 IsEmpty]: Start isEmpty. Operand 30364 states and 33295 transitions. [2023-11-06 21:55:20,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2023-11-06 21:55:20,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:20,739 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:55:20,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:20,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:20,941 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:20,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:20,941 INFO L85 PathProgramCache]: Analyzing trace with hash 477940974, now seen corresponding path program 1 times [2023-11-06 21:55:20,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:20,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554297682] [2023-11-06 21:55:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:20,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 355 proven. 555 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-11-06 21:55:22,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:22,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554297682] [2023-11-06 21:55:22,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554297682] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:55:22,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33293511] [2023-11-06 21:55:22,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:22,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:22,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:22,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:55:22,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:55:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:23,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:55:23,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2023-11-06 21:55:23,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:55:23,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33293511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:23,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:55:23,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-06 21:55:23,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356774722] [2023-11-06 21:55:23,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:23,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:23,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:23,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:55:23,300 INFO L87 Difference]: Start difference. First operand 30364 states and 33295 transitions. Second operand has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 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 21:55:26,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:26,054 INFO L93 Difference]: Finished difference Result 69696 states and 76580 transitions. [2023-11-06 21:55:26,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:26,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 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 1096 [2023-11-06 21:55:26,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:26,089 INFO L225 Difference]: With dead ends: 69696 [2023-11-06 21:55:26,089 INFO L226 Difference]: Without dead ends: 35884 [2023-11-06 21:55:26,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1101 GetRequests, 1096 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:55:26,102 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 649 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:26,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 973 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 21:55:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35884 states. [2023-11-06 21:55:26,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35884 to 35194. [2023-11-06 21:55:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35194 states, 35193 states have (on average 1.0466001761713977) internal successors, (36833), 35193 states have internal predecessors, (36833), 0 states have call successors, (0), 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 21:55:26,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35194 states to 35194 states and 36833 transitions. [2023-11-06 21:55:26,443 INFO L78 Accepts]: Start accepts. Automaton has 35194 states and 36833 transitions. Word has length 1096 [2023-11-06 21:55:26,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:26,443 INFO L495 AbstractCegarLoop]: Abstraction has 35194 states and 36833 transitions. [2023-11-06 21:55:26,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 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 21:55:26,444 INFO L276 IsEmpty]: Start isEmpty. Operand 35194 states and 36833 transitions. [2023-11-06 21:55:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1253 [2023-11-06 21:55:26,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:26,473 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:55:26,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 21:55:26,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 21:55:26,680 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:26,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:26,681 INFO L85 PathProgramCache]: Analyzing trace with hash -292713061, now seen corresponding path program 1 times [2023-11-06 21:55:26,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:26,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385016309] [2023-11-06 21:55:26,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:26,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 1032 proven. 0 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2023-11-06 21:55:27,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:27,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385016309] [2023-11-06 21:55:27,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385016309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:27,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:27,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:27,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681981182] [2023-11-06 21:55:27,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:27,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:27,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:27,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:27,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:27,644 INFO L87 Difference]: Start difference. First operand 35194 states and 36833 transitions. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 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 21:55:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:30,176 INFO L93 Difference]: Finished difference Result 80046 states and 84141 transitions. [2023-11-06 21:55:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:30,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 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 1252 [2023-11-06 21:55:30,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:30,222 INFO L225 Difference]: With dead ends: 80046 [2023-11-06 21:55:30,222 INFO L226 Difference]: Without dead ends: 44854 [2023-11-06 21:55:30,239 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 21:55:30,239 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 594 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:30,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 983 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 21:55:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44854 states. [2023-11-06 21:55:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44854 to 44854. [2023-11-06 21:55:30,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44854 states, 44853 states have (on average 1.0455487927228948) internal successors, (46896), 44853 states have internal predecessors, (46896), 0 states have call successors, (0), 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 21:55:30,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44854 states to 44854 states and 46896 transitions. [2023-11-06 21:55:30,669 INFO L78 Accepts]: Start accepts. Automaton has 44854 states and 46896 transitions. Word has length 1252 [2023-11-06 21:55:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:30,670 INFO L495 AbstractCegarLoop]: Abstraction has 44854 states and 46896 transitions. [2023-11-06 21:55:30,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 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 21:55:30,671 INFO L276 IsEmpty]: Start isEmpty. Operand 44854 states and 46896 transitions. [2023-11-06 21:55:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1270 [2023-11-06 21:55:30,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:30,694 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:55:30,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:55:30,694 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:30,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:30,695 INFO L85 PathProgramCache]: Analyzing trace with hash -2131898189, now seen corresponding path program 1 times [2023-11-06 21:55:30,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:30,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441300939] [2023-11-06 21:55:30,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:30,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 703 proven. 0 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2023-11-06 21:55:31,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:31,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441300939] [2023-11-06 21:55:31,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441300939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:31,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:31,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:31,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760193368] [2023-11-06 21:55:31,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:31,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:31,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:31,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:31,481 INFO L87 Difference]: Start difference. First operand 44854 states and 46896 transitions. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 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 21:55:34,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:34,083 INFO L93 Difference]: Finished difference Result 108336 states and 113693 transitions. [2023-11-06 21:55:34,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:34,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 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 1269 [2023-11-06 21:55:34,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:34,147 INFO L225 Difference]: With dead ends: 108336 [2023-11-06 21:55:34,147 INFO L226 Difference]: Without dead ends: 64174 [2023-11-06 21:55:34,169 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 21:55:34,170 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 579 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:34,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 74 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 21:55:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64174 states. [2023-11-06 21:55:35,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64174 to 63484. [2023-11-06 21:55:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63484 states, 63483 states have (on average 1.0483436510561883) internal successors, (66552), 63483 states have internal predecessors, (66552), 0 states have call successors, (0), 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 21:55:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63484 states to 63484 states and 66552 transitions. [2023-11-06 21:55:35,192 INFO L78 Accepts]: Start accepts. Automaton has 63484 states and 66552 transitions. Word has length 1269 [2023-11-06 21:55:35,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:35,193 INFO L495 AbstractCegarLoop]: Abstraction has 63484 states and 66552 transitions. [2023-11-06 21:55:35,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 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 21:55:35,193 INFO L276 IsEmpty]: Start isEmpty. Operand 63484 states and 66552 transitions. [2023-11-06 21:55:35,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1286 [2023-11-06 21:55:35,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:35,225 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:55:35,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:55:35,225 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:35,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:35,226 INFO L85 PathProgramCache]: Analyzing trace with hash 285254266, now seen corresponding path program 1 times [2023-11-06 21:55:35,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:35,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505541644] [2023-11-06 21:55:35,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:35,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 1082 proven. 0 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2023-11-06 21:55:36,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:36,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505541644] [2023-11-06 21:55:36,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505541644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:36,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:36,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:36,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953716613] [2023-11-06 21:55:36,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:36,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:36,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:36,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:36,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:36,447 INFO L87 Difference]: Start difference. First operand 63484 states and 66552 transitions. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 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 21:55:38,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:38,810 INFO L93 Difference]: Finished difference Result 126966 states and 133102 transitions. [2023-11-06 21:55:38,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:38,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 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 1285 [2023-11-06 21:55:38,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:38,875 INFO L225 Difference]: With dead ends: 126966 [2023-11-06 21:55:38,875 INFO L226 Difference]: Without dead ends: 63484 [2023-11-06 21:55:38,899 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 21:55:38,900 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 502 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:38,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 931 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 21:55:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63484 states. [2023-11-06 21:55:39,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63484 to 63484. [2023-11-06 21:55:39,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63484 states, 63483 states have (on average 1.0413811571601845) internal successors, (66110), 63483 states have internal predecessors, (66110), 0 states have call successors, (0), 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 21:55:39,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63484 states to 63484 states and 66110 transitions. [2023-11-06 21:55:39,895 INFO L78 Accepts]: Start accepts. Automaton has 63484 states and 66110 transitions. Word has length 1285 [2023-11-06 21:55:39,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:39,897 INFO L495 AbstractCegarLoop]: Abstraction has 63484 states and 66110 transitions. [2023-11-06 21:55:39,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 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 21:55:39,897 INFO L276 IsEmpty]: Start isEmpty. Operand 63484 states and 66110 transitions. [2023-11-06 21:55:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1357 [2023-11-06 21:55:39,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:39,943 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:55:39,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 21:55:39,943 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:39,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:40,106 INFO L85 PathProgramCache]: Analyzing trace with hash -105665770, now seen corresponding path program 1 times [2023-11-06 21:55:40,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:40,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003196954] [2023-11-06 21:55:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:40,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 619 proven. 0 refuted. 0 times theorem prover too weak. 1636 trivial. 0 not checked. [2023-11-06 21:55:41,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:41,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003196954] [2023-11-06 21:55:41,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003196954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:41,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:41,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:41,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162511238] [2023-11-06 21:55:41,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:41,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:41,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:41,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:41,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:41,722 INFO L87 Difference]: Start difference. First operand 63484 states and 66110 transitions. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 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 21:55:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:44,446 INFO L93 Difference]: Finished difference Result 138696 states and 144617 transitions. [2023-11-06 21:55:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:44,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 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 1356 [2023-11-06 21:55:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:44,517 INFO L225 Difference]: With dead ends: 138696 [2023-11-06 21:55:44,517 INFO L226 Difference]: Without dead ends: 75214 [2023-11-06 21:55:44,546 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 21:55:44,547 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 613 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:44,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 268 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 21:55:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75214 states. [2023-11-06 21:55:45,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75214 to 65554. [2023-11-06 21:55:45,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65554 states, 65553 states have (on average 1.0393422116455386) internal successors, (68132), 65553 states have internal predecessors, (68132), 0 states have call successors, (0), 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 21:55:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65554 states to 65554 states and 68132 transitions. [2023-11-06 21:55:45,593 INFO L78 Accepts]: Start accepts. Automaton has 65554 states and 68132 transitions. Word has length 1356 [2023-11-06 21:55:45,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:45,595 INFO L495 AbstractCegarLoop]: Abstraction has 65554 states and 68132 transitions. [2023-11-06 21:55:45,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 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 21:55:45,595 INFO L276 IsEmpty]: Start isEmpty. Operand 65554 states and 68132 transitions. [2023-11-06 21:55:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1404 [2023-11-06 21:55:45,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:45,619 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:55:45,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 21:55:45,619 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:45,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:45,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1209610159, now seen corresponding path program 1 times [2023-11-06 21:55:45,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:45,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629575632] [2023-11-06 21:55:45,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:45,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:48,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2037 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 1503 trivial. 0 not checked. [2023-11-06 21:55:48,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:48,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629575632] [2023-11-06 21:55:48,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629575632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:48,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:48,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:48,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078529787] [2023-11-06 21:55:48,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:48,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:48,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:48,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:48,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:48,154 INFO L87 Difference]: Start difference. First operand 65554 states and 68132 transitions. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 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 21:55:50,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:50,580 INFO L93 Difference]: Finished difference Result 131796 states and 136975 transitions. [2023-11-06 21:55:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:50,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 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 1403 [2023-11-06 21:55:50,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:50,641 INFO L225 Difference]: With dead ends: 131796 [2023-11-06 21:55:50,641 INFO L226 Difference]: Without dead ends: 66934 [2023-11-06 21:55:50,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 21:55:50,663 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 644 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:50,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 760 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 21:55:50,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66934 states. [2023-11-06 21:55:51,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66934 to 64174. [2023-11-06 21:55:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64174 states, 64173 states have (on average 1.036541847817618) internal successors, (66518), 64173 states have internal predecessors, (66518), 0 states have call successors, (0), 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 21:55:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64174 states to 64174 states and 66518 transitions. [2023-11-06 21:55:51,492 INFO L78 Accepts]: Start accepts. Automaton has 64174 states and 66518 transitions. Word has length 1403 [2023-11-06 21:55:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:51,493 INFO L495 AbstractCegarLoop]: Abstraction has 64174 states and 66518 transitions. [2023-11-06 21:55:51,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 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 21:55:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 64174 states and 66518 transitions. [2023-11-06 21:55:51,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1416 [2023-11-06 21:55:51,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:51,517 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:55:51,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 21:55:51,518 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:51,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash 887246084, now seen corresponding path program 1 times [2023-11-06 21:55:51,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:51,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125621418] [2023-11-06 21:55:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:51,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1497 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-11-06 21:55:53,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:53,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125621418] [2023-11-06 21:55:53,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125621418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:53,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:53,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:53,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363287150] [2023-11-06 21:55:53,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:53,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:53,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:53,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:53,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:53,606 INFO L87 Difference]: Start difference. First operand 64174 states and 66518 transitions. Second operand has 3 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 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 21:55:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:56,245 INFO L93 Difference]: Finished difference Result 138006 states and 143195 transitions. [2023-11-06 21:55:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:56,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 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 1415 [2023-11-06 21:55:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:56,320 INFO L225 Difference]: With dead ends: 138006 [2023-11-06 21:55:56,320 INFO L226 Difference]: Without dead ends: 74524 [2023-11-06 21:55:56,347 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 21:55:56,348 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 587 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:56,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 274 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 21:55:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74524 states. [2023-11-06 21:55:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74524 to 73144. [2023-11-06 21:55:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73144 states, 73143 states have (on average 1.0349315723992727) internal successors, (75698), 73143 states have internal predecessors, (75698), 0 states have call successors, (0), 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 21:55:57,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73144 states to 73144 states and 75698 transitions. [2023-11-06 21:55:57,537 INFO L78 Accepts]: Start accepts. Automaton has 73144 states and 75698 transitions. Word has length 1415 [2023-11-06 21:55:57,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:57,538 INFO L495 AbstractCegarLoop]: Abstraction has 73144 states and 75698 transitions. [2023-11-06 21:55:57,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 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 21:55:57,538 INFO L276 IsEmpty]: Start isEmpty. Operand 73144 states and 75698 transitions. [2023-11-06 21:55:57,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1469 [2023-11-06 21:55:57,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:57,571 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:55:57,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 21:55:57,571 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:57,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:57,572 INFO L85 PathProgramCache]: Analyzing trace with hash 736234674, now seen corresponding path program 1 times [2023-11-06 21:55:57,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:57,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257102500] [2023-11-06 21:55:57,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:57,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2588 backedges. 1114 proven. 1199 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-11-06 21:56:00,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:00,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257102500] [2023-11-06 21:56:00,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257102500] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:56:00,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182660634] [2023-11-06 21:56:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:00,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:56:00,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:56:00,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:56:00,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:56:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:00,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:56:00,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:56:01,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2588 backedges. 1188 proven. 0 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2023-11-06 21:56:01,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:56:01,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182660634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:01,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:56:01,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-06 21:56:01,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256268196] [2023-11-06 21:56:01,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:01,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:56:01,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:56:01,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:56:01,078 INFO L87 Difference]: Start difference. First operand 73144 states and 75698 transitions. Second operand has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 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 21:56:03,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:03,562 INFO L93 Difference]: Finished difference Result 145596 states and 150703 transitions. [2023-11-06 21:56:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:56:03,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 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 1468 [2023-11-06 21:56:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:03,632 INFO L225 Difference]: With dead ends: 145596 [2023-11-06 21:56:03,632 INFO L226 Difference]: Without dead ends: 73144 [2023-11-06 21:56:03,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1474 GetRequests, 1468 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:56:03,659 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 623 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:03,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 888 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 21:56:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73144 states. [2023-11-06 21:56:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73144 to 71074. [2023-11-06 21:56:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71074 states, 71073 states have (on average 1.0247492015251924) internal successors, (72832), 71073 states have internal predecessors, (72832), 0 states have call successors, (0), 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 21:56:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71074 states to 71074 states and 72832 transitions. [2023-11-06 21:56:04,562 INFO L78 Accepts]: Start accepts. Automaton has 71074 states and 72832 transitions. Word has length 1468 [2023-11-06 21:56:04,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:04,563 INFO L495 AbstractCegarLoop]: Abstraction has 71074 states and 72832 transitions. [2023-11-06 21:56:04,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 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 21:56:04,563 INFO L276 IsEmpty]: Start isEmpty. Operand 71074 states and 72832 transitions. [2023-11-06 21:56:04,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1474 [2023-11-06 21:56:04,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:04,599 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:56:04,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:56:04,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:56:04,806 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:04,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1847070414, now seen corresponding path program 1 times [2023-11-06 21:56:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:04,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63412463] [2023-11-06 21:56:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:04,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2947 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 2796 trivial. 0 not checked. [2023-11-06 21:56:06,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63412463] [2023-11-06 21:56:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63412463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:06,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:06,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:56:06,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799020292] [2023-11-06 21:56:06,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:06,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:56:06,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:06,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:56:06,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:56:06,031 INFO L87 Difference]: Start difference. First operand 71074 states and 72832 transitions. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 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 21:56:08,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:08,758 INFO L93 Difference]: Finished difference Result 153876 states and 157834 transitions. [2023-11-06 21:56:08,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:56:08,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 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 1473 [2023-11-06 21:56:08,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:08,837 INFO L225 Difference]: With dead ends: 153876 [2023-11-06 21:56:08,837 INFO L226 Difference]: Without dead ends: 82114 [2023-11-06 21:56:08,866 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 21:56:08,867 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 673 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:08,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 948 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 21:56:08,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82114 states. [2023-11-06 21:56:09,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82114 to 79354. [2023-11-06 21:56:09,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79354 states, 79353 states have (on average 1.0232253348959712) internal successors, (81196), 79353 states have internal predecessors, (81196), 0 states have call successors, (0), 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 21:56:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79354 states to 79354 states and 81196 transitions. [2023-11-06 21:56:10,041 INFO L78 Accepts]: Start accepts. Automaton has 79354 states and 81196 transitions. Word has length 1473 [2023-11-06 21:56:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:10,043 INFO L495 AbstractCegarLoop]: Abstraction has 79354 states and 81196 transitions. [2023-11-06 21:56:10,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 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 21:56:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand 79354 states and 81196 transitions. [2023-11-06 21:56:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1725 [2023-11-06 21:56:10,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:10,120 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:56:10,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 21:56:10,120 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:10,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1342853677, now seen corresponding path program 1 times [2023-11-06 21:56:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275944993] [2023-11-06 21:56:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2461 backedges. 1780 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2023-11-06 21:56:12,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:12,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275944993] [2023-11-06 21:56:12,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275944993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:12,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:12,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:56:12,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899762348] [2023-11-06 21:56:12,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:12,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:56:12,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:12,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:56:12,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:56:12,035 INFO L87 Difference]: Start difference. First operand 79354 states and 81196 transitions. Second operand has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 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 21:56:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:14,961 INFO L93 Difference]: Finished difference Result 177336 states and 181485 transitions. [2023-11-06 21:56:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:56:14,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 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 1724 [2023-11-06 21:56:14,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:15,061 INFO L225 Difference]: With dead ends: 177336 [2023-11-06 21:56:15,062 INFO L226 Difference]: Without dead ends: 98674 [2023-11-06 21:56:15,077 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 21:56:15,078 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 615 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:15,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 222 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 21:56:15,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98674 states. [2023-11-06 21:56:16,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98674 to 97294. [2023-11-06 21:56:16,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97294 states, 97293 states have (on average 1.0220776417625113) internal successors, (99441), 97293 states have internal predecessors, (99441), 0 states have call successors, (0), 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 21:56:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97294 states to 97294 states and 99441 transitions. [2023-11-06 21:56:16,465 INFO L78 Accepts]: Start accepts. Automaton has 97294 states and 99441 transitions. Word has length 1724 [2023-11-06 21:56:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:16,466 INFO L495 AbstractCegarLoop]: Abstraction has 97294 states and 99441 transitions. [2023-11-06 21:56:16,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 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 21:56:16,466 INFO L276 IsEmpty]: Start isEmpty. Operand 97294 states and 99441 transitions. [2023-11-06 21:56:16,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1957 [2023-11-06 21:56:16,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:16,572 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-11-06 21:56:16,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 21:56:16,573 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:16,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:16,574 INFO L85 PathProgramCache]: Analyzing trace with hash -500924029, now seen corresponding path program 1 times [2023-11-06 21:56:16,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:16,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586856811] [2023-11-06 21:56:16,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:16,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3498 backedges. 2408 proven. 0 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2023-11-06 21:56:19,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:19,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586856811] [2023-11-06 21:56:19,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586856811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:19,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:19,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:56:19,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475902705] [2023-11-06 21:56:19,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:19,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:56:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:56:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:56:19,436 INFO L87 Difference]: Start difference. First operand 97294 states and 99441 transitions. Second operand has 4 states, 4 states have (on average 266.25) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 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 21:56:22,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:22,997 INFO L93 Difference]: Finished difference Result 197346 states and 201665 transitions. [2023-11-06 21:56:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:56:22,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 266.25) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 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 1956 [2023-11-06 21:56:22,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:23,100 INFO L225 Difference]: With dead ends: 197346 [2023-11-06 21:56:23,101 INFO L226 Difference]: Without dead ends: 100054 [2023-11-06 21:56:23,139 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 21:56:23,140 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 802 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:23,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 66 Invalid, 2900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-06 21:56:23,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100054 states. [2023-11-06 21:56:24,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100054 to 97984. [2023-11-06 21:56:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97984 states, 97983 states have (on average 1.021503730238919) internal successors, (100090), 97983 states have internal predecessors, (100090), 0 states have call successors, (0), 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 21:56:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97984 states to 97984 states and 100090 transitions. [2023-11-06 21:56:24,926 INFO L78 Accepts]: Start accepts. Automaton has 97984 states and 100090 transitions. Word has length 1956 [2023-11-06 21:56:24,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:24,928 INFO L495 AbstractCegarLoop]: Abstraction has 97984 states and 100090 transitions. [2023-11-06 21:56:24,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.25) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 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 21:56:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 97984 states and 100090 transitions. [2023-11-06 21:56:25,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2026 [2023-11-06 21:56:25,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:25,042 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:56:25,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 21:56:25,042 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:25,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:25,043 INFO L85 PathProgramCache]: Analyzing trace with hash -995271176, now seen corresponding path program 1 times [2023-11-06 21:56:25,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:25,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812380286] [2023-11-06 21:56:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:25,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3882 backedges. 2848 proven. 440 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2023-11-06 21:56:33,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:33,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812380286] [2023-11-06 21:56:33,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812380286] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:56:33,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777464827] [2023-11-06 21:56:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:33,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:56:33,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:56:33,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:56:33,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b893d04-bfdd-4c97-9804-d08dd25e2d0f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:56:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:34,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 2270 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:56:34,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:56:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3882 backedges. 3005 proven. 107 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-11-06 21:56:36,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:56:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3882 backedges. 2792 proven. 0 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2023-11-06 21:56:40,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777464827] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:56:40,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:56:40,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 4] total 11 [2023-11-06 21:56:40,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371889280] [2023-11-06 21:56:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:40,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:56:40,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:40,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:56:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:56:40,969 INFO L87 Difference]: Start difference. First operand 97984 states and 100090 transitions. Second operand has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 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 21:56:44,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:44,501 INFO L93 Difference]: Finished difference Result 196656 states and 200964 transitions. [2023-11-06 21:56:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:56:44,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 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 2025 [2023-11-06 21:56:44,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:44,599 INFO L225 Difference]: With dead ends: 196656 [2023-11-06 21:56:44,599 INFO L226 Difference]: Without dead ends: 99364 [2023-11-06 21:56:44,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4056 GetRequests, 4047 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:56:44,617 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 471 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:44,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 92 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 21:56:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99364 states.