./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/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_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/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_92943f48-d30c-4946-b819-aee9856a4507/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 9287609067f4f1cf68c9add8d10c44a8dc20a6e66127e88f3c147131798fea5d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:02:28,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:02:28,290 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:02:28,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:02:28,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:02:28,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:02:28,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:02:28,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:02:28,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:02:28,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:02:28,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:02:28,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:02:28,328 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:02:28,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:02:28,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:02:28,329 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:02:28,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:02:28,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:02:28,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:02:28,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:02:28,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:02:28,333 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:02:28,333 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:02:28,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:02:28,334 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:02:28,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:02:28,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:02:28,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:02:28,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:02:28,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:02:28,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:02:28,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:02:28,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:02:28,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:02:28,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:02:28,339 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:02:28,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:02:28,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:02:28,340 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:02:28,340 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_92943f48-d30c-4946-b819-aee9856a4507/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9287609067f4f1cf68c9add8d10c44a8dc20a6e66127e88f3c147131798fea5d [2023-11-06 23:02:28,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:02:28,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:02:28,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:02:28,675 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:02:28,675 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:02:28,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/eca-rers2012/Problem03_label04.c [2023-11-06 23:02:31,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:02:32,202 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:02:32,203 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/sv-benchmarks/c/eca-rers2012/Problem03_label04.c [2023-11-06 23:02:32,220 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/data/a845592ad/7db9fdac131c4343b32f35854c61d428/FLAGd39ad7a02 [2023-11-06 23:02:32,235 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/data/a845592ad/7db9fdac131c4343b32f35854c61d428 [2023-11-06 23:02:32,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:02:32,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:02:32,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:32,241 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:02:32,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:02:32,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:32" (1/1) ... [2023-11-06 23:02:32,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d02ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:32, skipping insertion in model container [2023-11-06 23:02:32,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:32" (1/1) ... [2023-11-06 23:02:32,355 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:02:33,094 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/sv-benchmarks/c/eca-rers2012/Problem03_label04.c[60959,60972] [2023-11-06 23:02:33,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:33,142 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:02:33,413 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_92943f48-d30c-4946-b819-aee9856a4507/sv-benchmarks/c/eca-rers2012/Problem03_label04.c[60959,60972] [2023-11-06 23:02:33,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:33,445 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:02:33,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33 WrapperNode [2023-11-06 23:02:33,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:33,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:33,448 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:02:33,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:02:33,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33" (1/1) ... [2023-11-06 23:02:33,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33" (1/1) ... [2023-11-06 23:02:33,617 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-11-06 23:02:33,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:33,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:02:33,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:02:33,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:02:33,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33" (1/1) ... [2023-11-06 23:02:33,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33" (1/1) ... [2023-11-06 23:02:33,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33" (1/1) ... [2023-11-06 23:02:33,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33" (1/1) ... [2023-11-06 23:02:33,698 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33" (1/1) ... [2023-11-06 23:02:33,721 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33" (1/1) ... [2023-11-06 23:02:33,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33" (1/1) ... [2023-11-06 23:02:33,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33" (1/1) ... [2023-11-06 23:02:33,765 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:02:33,766 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:02:33,766 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:02:33,766 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:02:33,767 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33" (1/1) ... [2023-11-06 23:02:33,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:02:33,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:33,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:02:33,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:02:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:02:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:02:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:02:33,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:02:34,014 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:02:34,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:02:36,137 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:02:36,152 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:02:36,153 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:02:36,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:36 BoogieIcfgContainer [2023-11-06 23:02:36,156 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:02:36,161 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:02:36,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:02:36,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:02:36,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:02:32" (1/3) ... [2023-11-06 23:02:36,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404eb502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:02:36, skipping insertion in model container [2023-11-06 23:02:36,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:33" (2/3) ... [2023-11-06 23:02:36,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404eb502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:02:36, skipping insertion in model container [2023-11-06 23:02:36,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:36" (3/3) ... [2023-11-06 23:02:36,170 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label04.c [2023-11-06 23:02:36,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:02:36,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:02:36,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:02:36,267 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;@14567bf5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:02:36,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:02:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 23:02:36,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-11-06 23:02:36,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:36,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:36,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:36,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:36,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2019161402, now seen corresponding path program 1 times [2023-11-06 23:02:36,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:36,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995745618] [2023-11-06 23:02:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:36,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:37,559 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 23:02:37,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:37,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995745618] [2023-11-06 23:02:37,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995745618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:37,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:37,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:37,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195162374] [2023-11-06 23:02:37,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:37,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:37,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:37,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:37,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:37,620 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 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 23:02:39,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:39,019 INFO L93 Difference]: Finished difference Result 843 states and 1493 transitions. [2023-11-06 23:02:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:39,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-11-06 23:02:39,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:39,038 INFO L225 Difference]: With dead ends: 843 [2023-11-06 23:02:39,038 INFO L226 Difference]: Without dead ends: 463 [2023-11-06 23:02:39,043 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 23:02:39,047 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 76 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:39,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 121 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 23:02:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-11-06 23:02:39,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2023-11-06 23:02:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.6339285714285714) internal successors, (732), 448 states have internal predecessors, (732), 0 states have call successors, (0), 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 23:02:39,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 732 transitions. [2023-11-06 23:02:39,146 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 732 transitions. Word has length 198 [2023-11-06 23:02:39,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:39,147 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 732 transitions. [2023-11-06 23:02:39,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 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 23:02:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 732 transitions. [2023-11-06 23:02:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-06 23:02:39,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:39,155 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 23:02:39,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:02:39,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:39,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:39,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1882019270, now seen corresponding path program 1 times [2023-11-06 23:02:39,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:39,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514652452] [2023-11-06 23:02:39,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:39,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:02:39,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:39,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514652452] [2023-11-06 23:02:39,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514652452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:39,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:39,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:39,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33500935] [2023-11-06 23:02:39,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:39,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:39,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:39,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:39,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:39,750 INFO L87 Difference]: Start difference. First operand 449 states and 732 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:40,670 INFO L93 Difference]: Finished difference Result 1333 states and 2180 transitions. [2023-11-06 23:02:40,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:40,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-11-06 23:02:40,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:40,677 INFO L225 Difference]: With dead ends: 1333 [2023-11-06 23:02:40,677 INFO L226 Difference]: Without dead ends: 886 [2023-11-06 23:02:40,679 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 23:02:40,680 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:40,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 114 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 23:02:40,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2023-11-06 23:02:40,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2023-11-06 23:02:40,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.6163450624290578) internal successors, (1424), 881 states have internal predecessors, (1424), 0 states have call successors, (0), 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 23:02:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1424 transitions. [2023-11-06 23:02:40,769 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1424 transitions. Word has length 204 [2023-11-06 23:02:40,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:40,770 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1424 transitions. [2023-11-06 23:02:40,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:40,771 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1424 transitions. [2023-11-06 23:02:40,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-06 23:02:40,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:40,782 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 23:02:40,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:02:40,783 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:40,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash -952325218, now seen corresponding path program 1 times [2023-11-06 23:02:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:40,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117518282] [2023-11-06 23:02:40,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:40,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:02:41,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:41,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117518282] [2023-11-06 23:02:41,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117518282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:41,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:41,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:41,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494811486] [2023-11-06 23:02:41,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:41,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:41,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:41,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:41,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:41,426 INFO L87 Difference]: Start difference. First operand 882 states and 1424 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:42,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:42,430 INFO L93 Difference]: Finished difference Result 2575 states and 4172 transitions. [2023-11-06 23:02:42,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:42,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-11-06 23:02:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:42,442 INFO L225 Difference]: With dead ends: 2575 [2023-11-06 23:02:42,443 INFO L226 Difference]: Without dead ends: 1695 [2023-11-06 23:02:42,448 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 23:02:42,452 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 214 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:42,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 194 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 23:02:42,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2023-11-06 23:02:42,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2023-11-06 23:02:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 1.39728453364817) internal successors, (2367), 1694 states have internal predecessors, (2367), 0 states have call successors, (0), 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 23:02:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2367 transitions. [2023-11-06 23:02:42,501 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2367 transitions. Word has length 204 [2023-11-06 23:02:42,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:42,505 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 2367 transitions. [2023-11-06 23:02:42,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2367 transitions. [2023-11-06 23:02:42,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-06 23:02:42,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:42,514 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-06 23:02:42,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:02:42,514 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:42,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:42,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1460060955, now seen corresponding path program 1 times [2023-11-06 23:02:42,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:42,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44817691] [2023-11-06 23:02:42,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:42,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 23:02:42,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:42,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44817691] [2023-11-06 23:02:42,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44817691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:42,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:42,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:42,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528046914] [2023-11-06 23:02:42,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:42,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:42,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:42,750 INFO L87 Difference]: Start difference. First operand 1695 states and 2367 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 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 23:02:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:43,834 INFO L93 Difference]: Finished difference Result 4840 states and 6821 transitions. [2023-11-06 23:02:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:43,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 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 212 [2023-11-06 23:02:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:43,851 INFO L225 Difference]: With dead ends: 4840 [2023-11-06 23:02:43,851 INFO L226 Difference]: Without dead ends: 3147 [2023-11-06 23:02:43,853 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 23:02:43,864 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:43,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:02:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2023-11-06 23:02:43,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 3123. [2023-11-06 23:02:43,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.3837283792440742) internal successors, (4320), 3122 states have internal predecessors, (4320), 0 states have call successors, (0), 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 23:02:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 4320 transitions. [2023-11-06 23:02:43,957 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 4320 transitions. Word has length 212 [2023-11-06 23:02:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:43,958 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 4320 transitions. [2023-11-06 23:02:43,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 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 23:02:43,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 4320 transitions. [2023-11-06 23:02:43,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-06 23:02:43,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:43,968 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:43,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:02:43,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:43,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:43,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1361528816, now seen corresponding path program 1 times [2023-11-06 23:02:43,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:43,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259892691] [2023-11-06 23:02:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:43,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:02:44,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:44,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259892691] [2023-11-06 23:02:44,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259892691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:44,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:44,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:02:44,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389445344] [2023-11-06 23:02:44,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:44,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:44,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:44,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:44,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:44,393 INFO L87 Difference]: Start difference. First operand 3123 states and 4320 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 23:02:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:45,472 INFO L93 Difference]: Finished difference Result 8695 states and 12189 transitions. [2023-11-06 23:02:45,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 219 [2023-11-06 23:02:45,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:45,504 INFO L225 Difference]: With dead ends: 8695 [2023-11-06 23:02:45,504 INFO L226 Difference]: Without dead ends: 5574 [2023-11-06 23:02:45,511 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 23:02:45,512 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 216 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:45,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 367 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:02:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2023-11-06 23:02:45,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 5568. [2023-11-06 23:02:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5568 states, 5567 states have (on average 1.3175857733069876) internal successors, (7335), 5567 states have internal predecessors, (7335), 0 states have call successors, (0), 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 23:02:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5568 states to 5568 states and 7335 transitions. [2023-11-06 23:02:45,688 INFO L78 Accepts]: Start accepts. Automaton has 5568 states and 7335 transitions. Word has length 219 [2023-11-06 23:02:45,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:45,688 INFO L495 AbstractCegarLoop]: Abstraction has 5568 states and 7335 transitions. [2023-11-06 23:02:45,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 23:02:45,689 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states and 7335 transitions. [2023-11-06 23:02:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-06 23:02:45,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:45,702 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2023-11-06 23:02:45,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:02:45,703 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:45,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:45,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1121528084, now seen corresponding path program 1 times [2023-11-06 23:02:45,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:45,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902880841] [2023-11-06 23:02:45,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:45,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:02:46,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:46,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902880841] [2023-11-06 23:02:46,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902880841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:46,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:46,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:02:46,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839970242] [2023-11-06 23:02:46,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:46,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:46,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:46,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:46,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:46,286 INFO L87 Difference]: Start difference. First operand 5568 states and 7335 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 23:02:47,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:47,371 INFO L93 Difference]: Finished difference Result 13180 states and 17448 transitions. [2023-11-06 23:02:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:47,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 226 [2023-11-06 23:02:47,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:47,411 INFO L225 Difference]: With dead ends: 13180 [2023-11-06 23:02:47,412 INFO L226 Difference]: Without dead ends: 7614 [2023-11-06 23:02:47,419 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 23:02:47,420 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 212 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:47,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 372 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:02:47,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7614 states. [2023-11-06 23:02:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7614 to 7600. [2023-11-06 23:02:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7600 states, 7599 states have (on average 1.2791156731148836) internal successors, (9720), 7599 states have internal predecessors, (9720), 0 states have call successors, (0), 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 23:02:47,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7600 states to 7600 states and 9720 transitions. [2023-11-06 23:02:47,674 INFO L78 Accepts]: Start accepts. Automaton has 7600 states and 9720 transitions. Word has length 226 [2023-11-06 23:02:47,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:47,675 INFO L495 AbstractCegarLoop]: Abstraction has 7600 states and 9720 transitions. [2023-11-06 23:02:47,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 23:02:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 7600 states and 9720 transitions. [2023-11-06 23:02:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-06 23:02:47,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:47,695 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:47,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:02:47,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:47,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:47,696 INFO L85 PathProgramCache]: Analyzing trace with hash -464017916, now seen corresponding path program 1 times [2023-11-06 23:02:47,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:47,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189623206] [2023-11-06 23:02:47,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:47,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:02:48,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:48,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189623206] [2023-11-06 23:02:48,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189623206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:48,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:48,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:48,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974214856] [2023-11-06 23:02:48,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:48,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:48,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:48,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:48,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:48,200 INFO L87 Difference]: Start difference. First operand 7600 states and 9720 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 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 23:02:49,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:49,380 INFO L93 Difference]: Finished difference Result 21732 states and 27866 transitions. [2023-11-06 23:02:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:49,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 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 232 [2023-11-06 23:02:49,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:49,454 INFO L225 Difference]: With dead ends: 21732 [2023-11-06 23:02:49,454 INFO L226 Difference]: Without dead ends: 14134 [2023-11-06 23:02:49,464 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 23:02:49,466 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 217 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:49,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 164 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:02:49,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14134 states. [2023-11-06 23:02:49,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14134 to 14121. [2023-11-06 23:02:49,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14121 states, 14120 states have (on average 1.248158640226629) internal successors, (17624), 14120 states have internal predecessors, (17624), 0 states have call successors, (0), 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 23:02:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14121 states to 14121 states and 17624 transitions. [2023-11-06 23:02:49,859 INFO L78 Accepts]: Start accepts. Automaton has 14121 states and 17624 transitions. Word has length 232 [2023-11-06 23:02:49,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:49,859 INFO L495 AbstractCegarLoop]: Abstraction has 14121 states and 17624 transitions. [2023-11-06 23:02:49,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 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 23:02:49,860 INFO L276 IsEmpty]: Start isEmpty. Operand 14121 states and 17624 transitions. [2023-11-06 23:02:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-06 23:02:49,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:49,886 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:49,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:02:49,886 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:49,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:49,887 INFO L85 PathProgramCache]: Analyzing trace with hash 953523527, now seen corresponding path program 1 times [2023-11-06 23:02:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:49,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839530586] [2023-11-06 23:02:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:02:50,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:50,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839530586] [2023-11-06 23:02:50,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839530586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:50,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:50,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:02:50,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555890357] [2023-11-06 23:02:50,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:50,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:50,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:50,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:50,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:02:50,355 INFO L87 Difference]: Start difference. First operand 14121 states and 17624 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 23:02:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:52,164 INFO L93 Difference]: Finished difference Result 28079 states and 35105 transitions. [2023-11-06 23:02:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:52,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2023-11-06 23:02:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:52,194 INFO L225 Difference]: With dead ends: 28079 [2023-11-06 23:02:52,194 INFO L226 Difference]: Without dead ends: 14163 [2023-11-06 23:02:52,210 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 23:02:52,212 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 453 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:52,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 137 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 23:02:52,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14163 states. [2023-11-06 23:02:52,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14163 to 13309. [2023-11-06 23:02:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13309 states, 13308 states have (on average 1.2481965734896303) internal successors, (16611), 13308 states have internal predecessors, (16611), 0 states have call successors, (0), 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 23:02:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13309 states to 13309 states and 16611 transitions. [2023-11-06 23:02:52,563 INFO L78 Accepts]: Start accepts. Automaton has 13309 states and 16611 transitions. Word has length 242 [2023-11-06 23:02:52,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:52,564 INFO L495 AbstractCegarLoop]: Abstraction has 13309 states and 16611 transitions. [2023-11-06 23:02:52,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 23:02:52,564 INFO L276 IsEmpty]: Start isEmpty. Operand 13309 states and 16611 transitions. [2023-11-06 23:02:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-06 23:02:52,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:52,591 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:52,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:02:52,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:52,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:52,592 INFO L85 PathProgramCache]: Analyzing trace with hash 437609024, now seen corresponding path program 1 times [2023-11-06 23:02:52,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:52,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964160412] [2023-11-06 23:02:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:52,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:02:52,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:52,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964160412] [2023-11-06 23:02:52,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964160412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:52,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:52,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:52,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319051007] [2023-11-06 23:02:52,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:52,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:52,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:52,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:52,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:52,901 INFO L87 Difference]: Start difference. First operand 13309 states and 16611 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 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 23:02:54,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:54,129 INFO L93 Difference]: Finished difference Result 36391 states and 45729 transitions. [2023-11-06 23:02:54,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:54,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2023-11-06 23:02:54,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:54,173 INFO L225 Difference]: With dead ends: 36391 [2023-11-06 23:02:54,174 INFO L226 Difference]: Without dead ends: 23287 [2023-11-06 23:02:54,184 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 23:02:54,185 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 241 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:54,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 183 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:02:54,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23287 states. [2023-11-06 23:02:54,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23287 to 23079. [2023-11-06 23:02:54,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23079 states, 23078 states have (on average 1.224239535488344) internal successors, (28253), 23078 states have internal predecessors, (28253), 0 states have call successors, (0), 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 23:02:54,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23079 states to 23079 states and 28253 transitions. [2023-11-06 23:02:54,577 INFO L78 Accepts]: Start accepts. Automaton has 23079 states and 28253 transitions. Word has length 245 [2023-11-06 23:02:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:54,578 INFO L495 AbstractCegarLoop]: Abstraction has 23079 states and 28253 transitions. [2023-11-06 23:02:54,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 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 23:02:54,578 INFO L276 IsEmpty]: Start isEmpty. Operand 23079 states and 28253 transitions. [2023-11-06 23:02:54,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-11-06 23:02:54,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:54,619 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-06 23:02:54,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:02:54,620 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:54,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:54,621 INFO L85 PathProgramCache]: Analyzing trace with hash 917267845, now seen corresponding path program 1 times [2023-11-06 23:02:54,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:54,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367154658] [2023-11-06 23:02:54,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:54,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:02:55,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:55,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367154658] [2023-11-06 23:02:55,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367154658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:55,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:55,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:55,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871762156] [2023-11-06 23:02:55,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:55,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:55,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:55,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:55,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:55,222 INFO L87 Difference]: Start difference. First operand 23079 states and 28253 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 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 23:02:56,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:56,612 INFO L93 Difference]: Finished difference Result 54951 states and 67802 transitions. [2023-11-06 23:02:56,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:56,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 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 262 [2023-11-06 23:02:56,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:56,688 INFO L225 Difference]: With dead ends: 54951 [2023-11-06 23:02:56,689 INFO L226 Difference]: Without dead ends: 32077 [2023-11-06 23:02:56,712 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 23:02:56,713 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:56,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 243 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 23:02:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32077 states. [2023-11-06 23:02:57,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32077 to 32038. [2023-11-06 23:02:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32038 states, 32037 states have (on average 1.2361020070543434) internal successors, (39601), 32037 states have internal predecessors, (39601), 0 states have call successors, (0), 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 23:02:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32038 states to 32038 states and 39601 transitions. [2023-11-06 23:02:57,376 INFO L78 Accepts]: Start accepts. Automaton has 32038 states and 39601 transitions. Word has length 262 [2023-11-06 23:02:57,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:57,377 INFO L495 AbstractCegarLoop]: Abstraction has 32038 states and 39601 transitions. [2023-11-06 23:02:57,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 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 23:02:57,377 INFO L276 IsEmpty]: Start isEmpty. Operand 32038 states and 39601 transitions. [2023-11-06 23:02:57,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-06 23:02:57,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:57,415 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-06 23:02:57,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:02:57,416 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:57,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:57,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1951124923, now seen corresponding path program 1 times [2023-11-06 23:02:57,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:57,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15873776] [2023-11-06 23:02:57,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:57,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:02:58,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:58,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15873776] [2023-11-06 23:02:58,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15873776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:58,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:58,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:58,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447231252] [2023-11-06 23:02:58,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:58,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:58,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:58,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:58,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:58,036 INFO L87 Difference]: Start difference. First operand 32038 states and 39601 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 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 23:02:59,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:59,384 INFO L93 Difference]: Finished difference Result 86922 states and 107979 transitions. [2023-11-06 23:02:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:59,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 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 266 [2023-11-06 23:02:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:59,489 INFO L225 Difference]: With dead ends: 86922 [2023-11-06 23:02:59,489 INFO L226 Difference]: Without dead ends: 55495 [2023-11-06 23:02:59,516 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 23:02:59,517 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 243 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:59,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 227 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:02:59,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55495 states. [2023-11-06 23:03:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55495 to 55478. [2023-11-06 23:03:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55478 states, 55477 states have (on average 1.2367107089424447) internal successors, (68609), 55477 states have internal predecessors, (68609), 0 states have call successors, (0), 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 23:03:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55478 states to 55478 states and 68609 transitions. [2023-11-06 23:03:00,698 INFO L78 Accepts]: Start accepts. Automaton has 55478 states and 68609 transitions. Word has length 266 [2023-11-06 23:03:00,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:00,698 INFO L495 AbstractCegarLoop]: Abstraction has 55478 states and 68609 transitions. [2023-11-06 23:03:00,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 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 23:03:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 55478 states and 68609 transitions. [2023-11-06 23:03:00,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-06 23:03:00,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:00,741 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:00,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:03:00,741 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:00,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:00,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1868365629, now seen corresponding path program 1 times [2023-11-06 23:03:00,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:00,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362017484] [2023-11-06 23:03:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:00,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 88 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-06 23:03:01,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:01,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362017484] [2023-11-06 23:03:01,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362017484] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:01,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53526645] [2023-11-06 23:03:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:01,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:01,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:01,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:01,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:03:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:02,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:03:02,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-06 23:03:02,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:03:02,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53526645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:02,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:03:02,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-06 23:03:02,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392347659] [2023-11-06 23:03:02,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:02,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:02,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:02,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:03:02,132 INFO L87 Difference]: Start difference. First operand 55478 states and 68609 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 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 23:03:03,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:03,577 INFO L93 Difference]: Finished difference Result 104308 states and 129055 transitions. [2023-11-06 23:03:03,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:03,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 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 275 [2023-11-06 23:03:03,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:03,645 INFO L225 Difference]: With dead ends: 104308 [2023-11-06 23:03:03,646 INFO L226 Difference]: Without dead ends: 49238 [2023-11-06 23:03:03,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:03:03,676 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 210 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:03,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 382 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 23:03:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49238 states. [2023-11-06 23:03:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49238 to 49173. [2023-11-06 23:03:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49173 states, 49172 states have (on average 1.21685105344505) internal successors, (59835), 49172 states have internal predecessors, (59835), 0 states have call successors, (0), 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 23:03:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49173 states to 49173 states and 59835 transitions. [2023-11-06 23:03:04,733 INFO L78 Accepts]: Start accepts. Automaton has 49173 states and 59835 transitions. Word has length 275 [2023-11-06 23:03:04,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:04,733 INFO L495 AbstractCegarLoop]: Abstraction has 49173 states and 59835 transitions. [2023-11-06 23:03:04,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 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 23:03:04,734 INFO L276 IsEmpty]: Start isEmpty. Operand 49173 states and 59835 transitions. [2023-11-06 23:03:04,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-06 23:03:04,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:04,772 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:04,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:04,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:04,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:04,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:04,980 INFO L85 PathProgramCache]: Analyzing trace with hash -282409033, now seen corresponding path program 1 times [2023-11-06 23:03:04,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:04,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174511877] [2023-11-06 23:03:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:04,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 23:03:05,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:05,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174511877] [2023-11-06 23:03:05,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174511877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:05,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:05,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:03:05,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024846193] [2023-11-06 23:03:05,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:05,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:05,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:05,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:05,463 INFO L87 Difference]: Start difference. First operand 49173 states and 59835 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 23:03:06,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:06,756 INFO L93 Difference]: Finished difference Result 97096 states and 119492 transitions. [2023-11-06 23:03:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:06,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 276 [2023-11-06 23:03:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:06,990 INFO L225 Difference]: With dead ends: 97096 [2023-11-06 23:03:06,990 INFO L226 Difference]: Without dead ends: 48737 [2023-11-06 23:03:07,021 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 23:03:07,022 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 191 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:07,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 400 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:03:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48737 states. [2023-11-06 23:03:07,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48737 to 44669. [2023-11-06 23:03:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44669 states, 44668 states have (on average 1.180890122682905) internal successors, (52748), 44668 states have internal predecessors, (52748), 0 states have call successors, (0), 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 23:03:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44669 states to 44669 states and 52748 transitions. [2023-11-06 23:03:07,850 INFO L78 Accepts]: Start accepts. Automaton has 44669 states and 52748 transitions. Word has length 276 [2023-11-06 23:03:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:07,851 INFO L495 AbstractCegarLoop]: Abstraction has 44669 states and 52748 transitions. [2023-11-06 23:03:07,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 23:03:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 44669 states and 52748 transitions. [2023-11-06 23:03:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-11-06 23:03:07,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:07,881 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:07,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:03:07,882 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:07,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1024276696, now seen corresponding path program 1 times [2023-11-06 23:03:07,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:07,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766049701] [2023-11-06 23:03:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:07,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 23:03:08,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:08,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766049701] [2023-11-06 23:03:08,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766049701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:08,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:08,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:03:08,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713198479] [2023-11-06 23:03:08,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:08,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:03:08,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:08,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:03:08,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:03:08,413 INFO L87 Difference]: Start difference. First operand 44669 states and 52748 transitions. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 23:03:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:09,814 INFO L93 Difference]: Finished difference Result 88230 states and 104448 transitions. [2023-11-06 23:03:09,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:03:09,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 292 [2023-11-06 23:03:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:09,852 INFO L225 Difference]: With dead ends: 88230 [2023-11-06 23:03:09,852 INFO L226 Difference]: Without dead ends: 43162 [2023-11-06 23:03:09,863 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 23:03:09,863 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 544 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:09,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 59 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:03:09,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43162 states. [2023-11-06 23:03:10,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43162 to 34623. [2023-11-06 23:03:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34623 states, 34622 states have (on average 1.108081566633932) internal successors, (38364), 34622 states have internal predecessors, (38364), 0 states have call successors, (0), 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 23:03:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34623 states to 34623 states and 38364 transitions. [2023-11-06 23:03:10,437 INFO L78 Accepts]: Start accepts. Automaton has 34623 states and 38364 transitions. Word has length 292 [2023-11-06 23:03:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:10,437 INFO L495 AbstractCegarLoop]: Abstraction has 34623 states and 38364 transitions. [2023-11-06 23:03:10,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 23:03:10,438 INFO L276 IsEmpty]: Start isEmpty. Operand 34623 states and 38364 transitions. [2023-11-06 23:03:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-11-06 23:03:10,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:10,458 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 23:03:10,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:03:10,458 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:10,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash -460493825, now seen corresponding path program 1 times [2023-11-06 23:03:10,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:10,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925908308] [2023-11-06 23:03:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:10,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:03:10,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:10,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925908308] [2023-11-06 23:03:10,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925908308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:10,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:10,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:03:10,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997072250] [2023-11-06 23:03:10,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:10,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:03:10,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:10,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:03:10,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:03:10,957 INFO L87 Difference]: Start difference. First operand 34623 states and 38364 transitions. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:12,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:12,390 INFO L93 Difference]: Finished difference Result 60306 states and 66801 transitions. [2023-11-06 23:03:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:03:12,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2023-11-06 23:03:12,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:12,420 INFO L225 Difference]: With dead ends: 60306 [2023-11-06 23:03:12,420 INFO L226 Difference]: Without dead ends: 36073 [2023-11-06 23:03:12,431 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 23:03:12,432 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 338 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:12,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 101 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 23:03:12,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36073 states. [2023-11-06 23:03:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36073 to 35440. [2023-11-06 23:03:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35440 states, 35439 states have (on average 1.106464629363131) internal successors, (39212), 35439 states have internal predecessors, (39212), 0 states have call successors, (0), 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 23:03:13,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35440 states to 35440 states and 39212 transitions. [2023-11-06 23:03:13,056 INFO L78 Accepts]: Start accepts. Automaton has 35440 states and 39212 transitions. Word has length 306 [2023-11-06 23:03:13,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:13,057 INFO L495 AbstractCegarLoop]: Abstraction has 35440 states and 39212 transitions. [2023-11-06 23:03:13,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 35440 states and 39212 transitions. [2023-11-06 23:03:13,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-06 23:03:13,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:13,074 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:13,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:03:13,075 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:13,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:13,075 INFO L85 PathProgramCache]: Analyzing trace with hash -193167971, now seen corresponding path program 1 times [2023-11-06 23:03:13,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:13,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754160736] [2023-11-06 23:03:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:13,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-06 23:03:13,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:13,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754160736] [2023-11-06 23:03:13,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754160736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:13,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709936185] [2023-11-06 23:03:13,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:13,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:13,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:13,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:13,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:03:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:13,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:03:13,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-06 23:03:14,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:03:14,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709936185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:14,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:03:14,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-06 23:03:14,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094881236] [2023-11-06 23:03:14,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:14,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:14,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:14,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:14,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:03:14,175 INFO L87 Difference]: Start difference. First operand 35440 states and 39212 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 23:03:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:15,199 INFO L93 Difference]: Finished difference Result 79427 states and 88064 transitions. [2023-11-06 23:03:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:15,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 320 [2023-11-06 23:03:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:15,240 INFO L225 Difference]: With dead ends: 79427 [2023-11-06 23:03:15,240 INFO L226 Difference]: Without dead ends: 45618 [2023-11-06 23:03:15,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 319 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 23:03:15,259 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 49 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:15,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 99 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:03:15,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45618 states. [2023-11-06 23:03:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45618 to 44598. [2023-11-06 23:03:15,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44598 states, 44597 states have (on average 1.1041101419377986) internal successors, (49240), 44597 states have internal predecessors, (49240), 0 states have call successors, (0), 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 23:03:15,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44598 states to 44598 states and 49240 transitions. [2023-11-06 23:03:15,911 INFO L78 Accepts]: Start accepts. Automaton has 44598 states and 49240 transitions. Word has length 320 [2023-11-06 23:03:15,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:15,911 INFO L495 AbstractCegarLoop]: Abstraction has 44598 states and 49240 transitions. [2023-11-06 23:03:15,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 23:03:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 44598 states and 49240 transitions. [2023-11-06 23:03:15,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-11-06 23:03:15,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:15,944 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 23:03:15,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:16,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 23:03:16,150 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:16,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:16,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1121544722, now seen corresponding path program 1 times [2023-11-06 23:03:16,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:16,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634152847] [2023-11-06 23:03:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:16,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 44 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:03:16,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:16,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634152847] [2023-11-06 23:03:16,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634152847] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:16,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195670621] [2023-11-06 23:03:16,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:16,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:16,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:16,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:16,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:03:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:17,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:03:17,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-06 23:03:17,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:03:17,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195670621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:17,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:03:17,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-06 23:03:17,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341734714] [2023-11-06 23:03:17,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:17,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:17,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:17,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:17,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:03:17,336 INFO L87 Difference]: Start difference. First operand 44598 states and 49240 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:17,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:17,871 INFO L93 Difference]: Finished difference Result 102239 states and 112798 transitions. [2023-11-06 23:03:17,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:17,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2023-11-06 23:03:17,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:17,936 INFO L225 Difference]: With dead ends: 102239 [2023-11-06 23:03:17,936 INFO L226 Difference]: Without dead ends: 67617 [2023-11-06 23:03:17,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:03:17,956 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 200 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:17,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 478 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:03:18,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67617 states. [2023-11-06 23:03:18,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67617 to 67412. [2023-11-06 23:03:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67412 states, 67411 states have (on average 1.1006808977763274) internal successors, (74198), 67411 states have internal predecessors, (74198), 0 states have call successors, (0), 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 23:03:18,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67412 states to 67412 states and 74198 transitions. [2023-11-06 23:03:18,904 INFO L78 Accepts]: Start accepts. Automaton has 67412 states and 74198 transitions. Word has length 345 [2023-11-06 23:03:18,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:18,904 INFO L495 AbstractCegarLoop]: Abstraction has 67412 states and 74198 transitions. [2023-11-06 23:03:18,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:18,905 INFO L276 IsEmpty]: Start isEmpty. Operand 67412 states and 74198 transitions. [2023-11-06 23:03:18,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-11-06 23:03:18,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:18,947 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:18,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:19,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:19,160 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:19,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:19,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1368433964, now seen corresponding path program 1 times [2023-11-06 23:03:19,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:19,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654171718] [2023-11-06 23:03:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:19,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:03:19,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:19,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654171718] [2023-11-06 23:03:19,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654171718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:19,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:19,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:03:19,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122364409] [2023-11-06 23:03:19,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:19,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:19,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:19,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:19,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:19,746 INFO L87 Difference]: Start difference. First operand 67412 states and 74198 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:20,759 INFO L93 Difference]: Finished difference Result 111392 states and 122178 transitions. [2023-11-06 23:03:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:20,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2023-11-06 23:03:20,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:20,814 INFO L225 Difference]: With dead ends: 111392 [2023-11-06 23:03:20,815 INFO L226 Difference]: Without dead ends: 51516 [2023-11-06 23:03:20,836 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 23:03:20,837 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 232 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:20,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 305 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 23:03:20,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51516 states. [2023-11-06 23:03:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51516 to 49882. [2023-11-06 23:03:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49882 states, 49881 states have (on average 1.0811932399109883) internal successors, (53931), 49881 states have internal predecessors, (53931), 0 states have call successors, (0), 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 23:03:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49882 states to 49882 states and 53931 transitions. [2023-11-06 23:03:21,878 INFO L78 Accepts]: Start accepts. Automaton has 49882 states and 53931 transitions. Word has length 351 [2023-11-06 23:03:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:21,879 INFO L495 AbstractCegarLoop]: Abstraction has 49882 states and 53931 transitions. [2023-11-06 23:03:21,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:21,879 INFO L276 IsEmpty]: Start isEmpty. Operand 49882 states and 53931 transitions. [2023-11-06 23:03:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-11-06 23:03:21,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:21,947 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 23:03:21,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 23:03:21,948 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:21,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:21,949 INFO L85 PathProgramCache]: Analyzing trace with hash -355066912, now seen corresponding path program 1 times [2023-11-06 23:03:21,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:21,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639526215] [2023-11-06 23:03:21,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:21,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 215 proven. 6 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-06 23:03:22,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639526215] [2023-11-06 23:03:22,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639526215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707584579] [2023-11-06 23:03:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:22,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:22,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:22,813 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:22,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:03:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:23,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:03:23,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-06 23:03:23,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:03:23,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707584579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:23,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:03:23,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-06 23:03:23,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601084000] [2023-11-06 23:03:23,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:23,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:23,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:23,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:03:23,318 INFO L87 Difference]: Start difference. First operand 49882 states and 53931 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:23,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:23,921 INFO L93 Difference]: Finished difference Result 129700 states and 139922 transitions. [2023-11-06 23:03:23,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:23,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 410 [2023-11-06 23:03:23,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:24,247 INFO L225 Difference]: With dead ends: 129700 [2023-11-06 23:03:24,247 INFO L226 Difference]: Without dead ends: 81241 [2023-11-06 23:03:24,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 409 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 23:03:24,264 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 178 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:24,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 474 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:03:24,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81241 states. [2023-11-06 23:03:25,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81241 to 79809. [2023-11-06 23:03:25,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79809 states, 79808 states have (on average 1.0766965717722534) internal successors, (85929), 79808 states have internal predecessors, (85929), 0 states have call successors, (0), 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 23:03:25,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79809 states to 79809 states and 85929 transitions. [2023-11-06 23:03:25,301 INFO L78 Accepts]: Start accepts. Automaton has 79809 states and 85929 transitions. Word has length 410 [2023-11-06 23:03:25,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:25,301 INFO L495 AbstractCegarLoop]: Abstraction has 79809 states and 85929 transitions. [2023-11-06 23:03:25,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:25,302 INFO L276 IsEmpty]: Start isEmpty. Operand 79809 states and 85929 transitions. [2023-11-06 23:03:25,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-11-06 23:03:25,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:25,333 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 23:03:25,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:25,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:25,533 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:25,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:25,534 INFO L85 PathProgramCache]: Analyzing trace with hash -13806540, now seen corresponding path program 1 times [2023-11-06 23:03:25,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:25,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432886288] [2023-11-06 23:03:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:25,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 246 proven. 9 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-06 23:03:26,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:26,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432886288] [2023-11-06 23:03:26,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432886288] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:26,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597118482] [2023-11-06 23:03:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:26,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:26,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:26,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:26,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:03:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:26,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:03:26,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-06 23:03:26,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:03:26,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597118482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:26,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:03:26,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-06 23:03:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941064550] [2023-11-06 23:03:26,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:26,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:26,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:26,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:03:26,983 INFO L87 Difference]: Start difference. First operand 79809 states and 85929 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:28,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:28,410 INFO L93 Difference]: Finished difference Result 158225 states and 170459 transitions. [2023-11-06 23:03:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:28,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2023-11-06 23:03:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:28,796 INFO L225 Difference]: With dead ends: 158225 [2023-11-06 23:03:28,797 INFO L226 Difference]: Without dead ends: 80042 [2023-11-06 23:03:28,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:03:28,812 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 210 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:28,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 340 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:03:28,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80042 states. [2023-11-06 23:03:29,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80042 to 76764. [2023-11-06 23:03:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76764 states, 76763 states have (on average 1.0721571590479788) internal successors, (82302), 76763 states have internal predecessors, (82302), 0 states have call successors, (0), 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 23:03:29,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76764 states to 76764 states and 82302 transitions. [2023-11-06 23:03:29,939 INFO L78 Accepts]: Start accepts. Automaton has 76764 states and 82302 transitions. Word has length 433 [2023-11-06 23:03:29,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:29,939 INFO L495 AbstractCegarLoop]: Abstraction has 76764 states and 82302 transitions. [2023-11-06 23:03:29,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:29,940 INFO L276 IsEmpty]: Start isEmpty. Operand 76764 states and 82302 transitions. [2023-11-06 23:03:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-11-06 23:03:29,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:29,971 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:29,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:30,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:30,179 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:30,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:30,180 INFO L85 PathProgramCache]: Analyzing trace with hash 793479543, now seen corresponding path program 1 times [2023-11-06 23:03:30,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:30,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358990047] [2023-11-06 23:03:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:30,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-06 23:03:31,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:31,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358990047] [2023-11-06 23:03:31,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358990047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:31,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:31,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:03:31,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345223077] [2023-11-06 23:03:31,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:31,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:31,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:31,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:31,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:31,286 INFO L87 Difference]: Start difference. First operand 76764 states and 82302 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 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 23:03:32,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:32,341 INFO L93 Difference]: Finished difference Result 151903 states and 162908 transitions. [2023-11-06 23:03:32,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:32,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 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 435 [2023-11-06 23:03:32,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:32,419 INFO L225 Difference]: With dead ends: 151903 [2023-11-06 23:03:32,419 INFO L226 Difference]: Without dead ends: 76562 [2023-11-06 23:03:32,449 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 23:03:32,450 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:32,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 121 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:03:32,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76562 states. [2023-11-06 23:03:33,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76562 to 76561. [2023-11-06 23:03:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76561 states, 76560 states have (on average 1.0721917450365726) internal successors, (82087), 76560 states have internal predecessors, (82087), 0 states have call successors, (0), 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 23:03:33,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76561 states to 76561 states and 82087 transitions. [2023-11-06 23:03:33,965 INFO L78 Accepts]: Start accepts. Automaton has 76561 states and 82087 transitions. Word has length 435 [2023-11-06 23:03:33,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:33,966 INFO L495 AbstractCegarLoop]: Abstraction has 76561 states and 82087 transitions. [2023-11-06 23:03:33,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 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 23:03:33,966 INFO L276 IsEmpty]: Start isEmpty. Operand 76561 states and 82087 transitions. [2023-11-06 23:03:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-06 23:03:34,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:34,008 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:03:34,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 23:03:34,009 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:34,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:34,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1408356606, now seen corresponding path program 1 times [2023-11-06 23:03:34,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:34,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493387219] [2023-11-06 23:03:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:34,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 148 proven. 6 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-11-06 23:03:34,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:34,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493387219] [2023-11-06 23:03:34,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493387219] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:34,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746513140] [2023-11-06 23:03:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:34,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:34,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:34,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:34,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:03:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:35,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:03:35,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-06 23:03:35,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:03:35,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746513140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:35,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:03:35,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-06 23:03:35,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52425651] [2023-11-06 23:03:35,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:35,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:35,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:35,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:35,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:03:35,512 INFO L87 Difference]: Start difference. First operand 76561 states and 82087 transitions. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:36,559 INFO L93 Difference]: Finished difference Result 207906 states and 223143 transitions. [2023-11-06 23:03:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:36,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 441 [2023-11-06 23:03:36,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:36,704 INFO L225 Difference]: With dead ends: 207906 [2023-11-06 23:03:36,704 INFO L226 Difference]: Without dead ends: 134396 [2023-11-06 23:03:36,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:03:36,742 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 195 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:36,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 475 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:03:36,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134396 states. [2023-11-06 23:03:38,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134396 to 130715. [2023-11-06 23:03:38,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130715 states, 130714 states have (on average 1.0736340407301437) internal successors, (140339), 130714 states have internal predecessors, (140339), 0 states have call successors, (0), 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 23:03:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130715 states to 130715 states and 140339 transitions. [2023-11-06 23:03:39,080 INFO L78 Accepts]: Start accepts. Automaton has 130715 states and 140339 transitions. Word has length 441 [2023-11-06 23:03:39,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:39,081 INFO L495 AbstractCegarLoop]: Abstraction has 130715 states and 140339 transitions. [2023-11-06 23:03:39,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:39,081 INFO L276 IsEmpty]: Start isEmpty. Operand 130715 states and 140339 transitions. [2023-11-06 23:03:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-11-06 23:03:39,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:39,166 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:39,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:39,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:39,368 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:39,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 300187614, now seen corresponding path program 1 times [2023-11-06 23:03:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:39,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894290318] [2023-11-06 23:03:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:39,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 122 proven. 6 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-06 23:03:40,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:40,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894290318] [2023-11-06 23:03:40,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894290318] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:40,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796946378] [2023-11-06 23:03:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:40,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:40,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:40,108 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:40,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92943f48-d30c-4946-b819-aee9856a4507/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:03:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:40,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:03:40,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 23:03:41,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:03:41,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796946378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:41,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:03:41,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-06 23:03:41,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299968963] [2023-11-06 23:03:41,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:41,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:41,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:41,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:41,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:03:41,075 INFO L87 Difference]: Start difference. First operand 130715 states and 140339 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 23:03:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:43,181 INFO L93 Difference]: Finished difference Result 271636 states and 292416 transitions. [2023-11-06 23:03:43,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:43,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 460 [2023-11-06 23:03:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:43,348 INFO L225 Difference]: With dead ends: 271636 [2023-11-06 23:03:43,348 INFO L226 Difference]: Without dead ends: 142344 [2023-11-06 23:03:43,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:03:43,393 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 141 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:43,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 99 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:03:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142344 states. [2023-11-06 23:03:45,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142344 to 134586. [2023-11-06 23:03:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134586 states, 134585 states have (on average 1.0728387264554) internal successors, (144388), 134585 states have internal predecessors, (144388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)