./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label49.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/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_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label49.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/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_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/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 4dab15ca8d564215247ed99810908aedd9e5c3b287c9c31800ebdafb000d0f0d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:46:00,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:46:00,362 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:46:00,372 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:46:00,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:46:00,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:46:00,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:46:00,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:46:00,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:46:00,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:46:00,422 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:46:00,422 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:46:00,423 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:46:00,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:46:00,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:46:00,426 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:46:00,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:46:00,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:46:00,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:46:00,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:46:00,428 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:46:00,428 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:46:00,429 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:46:00,431 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:46:00,431 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:46:00,432 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:46:00,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:46:00,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:46:00,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:46:00,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:46:00,436 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:46:00,436 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:46:00,436 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:46:00,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:46:00,437 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:46:00,437 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:46:00,438 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:46:00,438 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:46:00,438 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:46:00,439 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_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dab15ca8d564215247ed99810908aedd9e5c3b287c9c31800ebdafb000d0f0d [2023-11-06 22:46:00,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:46:00,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:46:00,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:46:00,857 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:46:00,857 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:46:00,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/eca-rers2012/Problem19_label49.c [2023-11-06 22:46:03,962 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:46:04,789 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:46:04,790 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/sv-benchmarks/c/eca-rers2012/Problem19_label49.c [2023-11-06 22:46:04,862 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/data/12fd266f2/748dfef08fca4a7ba7e5d4e2e9e7b7b3/FLAG4b15547fa [2023-11-06 22:46:04,882 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/data/12fd266f2/748dfef08fca4a7ba7e5d4e2e9e7b7b3 [2023-11-06 22:46:04,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:46:04,890 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:46:04,894 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:46:04,894 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:46:04,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:46:04,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:04" (1/1) ... [2023-11-06 22:46:04,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@650ca61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:04, skipping insertion in model container [2023-11-06 22:46:04,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:04" (1/1) ... [2023-11-06 22:46:05,206 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:46:05,566 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_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/sv-benchmarks/c/eca-rers2012/Problem19_label49.c[5659,5672] [2023-11-06 22:46:07,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:46:07,317 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:46:07,356 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_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/sv-benchmarks/c/eca-rers2012/Problem19_label49.c[5659,5672] [2023-11-06 22:46:08,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:46:08,570 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:46:08,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08 WrapperNode [2023-11-06 22:46:08,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:46:08,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:46:08,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:46:08,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:46:08,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08" (1/1) ... [2023-11-06 22:46:08,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08" (1/1) ... [2023-11-06 22:46:09,870 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9426 [2023-11-06 22:46:09,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:46:09,871 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:46:09,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:46:09,872 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:46:09,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08" (1/1) ... [2023-11-06 22:46:09,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08" (1/1) ... [2023-11-06 22:46:10,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08" (1/1) ... [2023-11-06 22:46:10,077 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08" (1/1) ... [2023-11-06 22:46:10,673 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08" (1/1) ... [2023-11-06 22:46:10,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08" (1/1) ... [2023-11-06 22:46:10,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08" (1/1) ... [2023-11-06 22:46:10,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08" (1/1) ... [2023-11-06 22:46:11,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:46:11,060 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:46:11,061 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:46:11,061 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:46:11,062 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08" (1/1) ... [2023-11-06 22:46:11,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:46:11,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:11,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:11,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:46:11,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:46:11,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:46:11,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:46:11,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:46:11,272 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:46:11,274 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:46:22,247 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:46:22,271 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:46:22,271 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:46:22,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:22 BoogieIcfgContainer [2023-11-06 22:46:22,278 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:46:22,281 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:46:22,281 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:46:22,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:46:22,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:04" (1/3) ... [2023-11-06 22:46:22,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1596dea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:22, skipping insertion in model container [2023-11-06 22:46:22,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:08" (2/3) ... [2023-11-06 22:46:22,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1596dea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:22, skipping insertion in model container [2023-11-06 22:46:22,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:22" (3/3) ... [2023-11-06 22:46:22,289 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label49.c [2023-11-06 22:46:22,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:46:22,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:46:22,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:46:22,433 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;@24070f26, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:46:22,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:46:22,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 22:46:22,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:46:22,458 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] [2023-11-06 22:46:22,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:46:22,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:22,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1824112922, now seen corresponding path program 1 times [2023-11-06 22:46:22,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:22,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630841866] [2023-11-06 22:46:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:22,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:23,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:23,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630841866] [2023-11-06 22:46:23,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630841866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:23,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:23,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:46:23,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301641634] [2023-11-06 22:46:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:23,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:46:23,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:23,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:46:23,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:46:23,307 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:43,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:43,823 INFO L93 Difference]: Finished difference Result 6335 states and 12139 transitions. [2023-11-06 22:46:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:46:43,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-11-06 22:46:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:46:43,879 INFO L225 Difference]: With dead ends: 6335 [2023-11-06 22:46:43,880 INFO L226 Difference]: Without dead ends: 4520 [2023-11-06 22:46:43,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:46:43,894 INFO L413 NwaCegarLoop]: 1911 mSDtfsCounter, 4270 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 11295 mSolverCounterSat, 2249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4270 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 13544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2249 IncrementalHoareTripleChecker+Valid, 11295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:46:43,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4270 Valid, 2185 Invalid, 13544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2249 Valid, 11295 Invalid, 0 Unknown, 0 Unchecked, 19.8s Time] [2023-11-06 22:46:43,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2023-11-06 22:46:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4469. [2023-11-06 22:46:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 1.5980304386750224) internal successors, (7140), 4468 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7140 transitions. [2023-11-06 22:46:44,150 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7140 transitions. Word has length 42 [2023-11-06 22:46:44,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:46:44,151 INFO L495 AbstractCegarLoop]: Abstraction has 4469 states and 7140 transitions. [2023-11-06 22:46:44,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:44,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7140 transitions. [2023-11-06 22:46:44,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-11-06 22:46:44,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:46:44,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:44,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:46:44,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:46:44,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:44,165 INFO L85 PathProgramCache]: Analyzing trace with hash -350196237, now seen corresponding path program 1 times [2023-11-06 22:46:44,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:44,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580951300] [2023-11-06 22:46:44,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:44,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:45,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:45,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580951300] [2023-11-06 22:46:45,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580951300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:45,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:45,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:46:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762181507] [2023-11-06 22:46:45,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:45,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:46:45,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:45,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:46:45,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:46:45,530 INFO L87 Difference]: Start difference. First operand 4469 states and 7140 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 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 22:46:56,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:56,250 INFO L93 Difference]: Finished difference Result 7602 states and 12932 transitions. [2023-11-06 22:46:56,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:46:56,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 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 277 [2023-11-06 22:46:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:46:56,286 INFO L225 Difference]: With dead ends: 7602 [2023-11-06 22:46:56,286 INFO L226 Difference]: Without dead ends: 4469 [2023-11-06 22:46:56,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:46:56,294 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 1138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 7335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:46:56,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2113 Invalid, 7335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-11-06 22:46:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2023-11-06 22:46:56,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 4469. [2023-11-06 22:46:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 1.596016114592659) internal successors, (7131), 4468 states have internal predecessors, (7131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7131 transitions. [2023-11-06 22:46:56,426 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7131 transitions. Word has length 277 [2023-11-06 22:46:56,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:46:56,427 INFO L495 AbstractCegarLoop]: Abstraction has 4469 states and 7131 transitions. [2023-11-06 22:46:56,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 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 22:46:56,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7131 transitions. [2023-11-06 22:46:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-11-06 22:46:56,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:46:56,444 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:56,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:46:56,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:46:56,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash -695176404, now seen corresponding path program 1 times [2023-11-06 22:46:56,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:56,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642905346] [2023-11-06 22:46:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:56,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:58,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:58,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642905346] [2023-11-06 22:46:58,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642905346] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:58,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804349422] [2023-11-06 22:46:58,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:58,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:58,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:58,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:58,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:46:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:58,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:46:58,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-06 22:46:59,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:46:59,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804349422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:59,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:46:59,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-06 22:46:59,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542423978] [2023-11-06 22:46:59,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:59,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:59,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:59,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:59,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:46:59,484 INFO L87 Difference]: Start difference. First operand 4469 states and 7131 transitions. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:08,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:08,563 INFO L93 Difference]: Finished difference Result 10339 states and 18164 transitions. [2023-11-06 22:47:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:08,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 529 [2023-11-06 22:47:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:08,611 INFO L225 Difference]: With dead ends: 10339 [2023-11-06 22:47:08,612 INFO L226 Difference]: Without dead ends: 7237 [2023-11-06 22:47:08,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 528 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 22:47:08,618 INFO L413 NwaCegarLoop]: 1209 mSDtfsCounter, 1058 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4577 mSolverCounterSat, 1050 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 5627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 4577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:08,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1387 Invalid, 5627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 4577 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-06 22:47:08,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7237 states. [2023-11-06 22:47:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7237 to 7236. [2023-11-06 22:47:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 1.520110573600553) internal successors, (10998), 7235 states have internal predecessors, (10998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:08,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 10998 transitions. [2023-11-06 22:47:08,843 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 10998 transitions. Word has length 529 [2023-11-06 22:47:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:08,846 INFO L495 AbstractCegarLoop]: Abstraction has 7236 states and 10998 transitions. [2023-11-06 22:47:08,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 10998 transitions. [2023-11-06 22:47:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2023-11-06 22:47:08,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:08,865 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:08,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:09,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:09,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:09,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash -362360471, now seen corresponding path program 1 times [2023-11-06 22:47:09,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:09,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261530979] [2023-11-06 22:47:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:09,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-06 22:47:09,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:09,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261530979] [2023-11-06 22:47:09,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261530979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:09,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:09,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:47:09,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643794492] [2023-11-06 22:47:09,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:09,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:09,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:09,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:09,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:09,959 INFO L87 Difference]: Start difference. First operand 7236 states and 10998 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:18,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:18,361 INFO L93 Difference]: Finished difference Result 15842 states and 24470 transitions. [2023-11-06 22:47:18,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:18,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 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 594 [2023-11-06 22:47:18,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:18,424 INFO L225 Difference]: With dead ends: 15842 [2023-11-06 22:47:18,425 INFO L226 Difference]: Without dead ends: 9973 [2023-11-06 22:47:18,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:18,435 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1396 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 5598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:18,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 754 Invalid, 5598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1671 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-11-06 22:47:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2023-11-06 22:47:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9969. [2023-11-06 22:47:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.390048154093098) internal successors, (13856), 9968 states have internal predecessors, (13856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 13856 transitions. [2023-11-06 22:47:18,725 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 13856 transitions. Word has length 594 [2023-11-06 22:47:18,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:18,727 INFO L495 AbstractCegarLoop]: Abstraction has 9969 states and 13856 transitions. [2023-11-06 22:47:18,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 13856 transitions. [2023-11-06 22:47:18,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-06 22:47:18,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:18,748 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:18,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:47:18,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:18,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:18,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2047602111, now seen corresponding path program 1 times [2023-11-06 22:47:18,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:18,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807604424] [2023-11-06 22:47:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:18,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-06 22:47:19,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:19,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807604424] [2023-11-06 22:47:19,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807604424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:19,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:19,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:47:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443251510] [2023-11-06 22:47:19,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:19,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:19,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:19,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:19,544 INFO L87 Difference]: Start difference. First operand 9969 states and 13856 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:28,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:28,921 INFO L93 Difference]: Finished difference Result 26951 states and 38550 transitions. [2023-11-06 22:47:28,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:28,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 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 618 [2023-11-06 22:47:28,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:28,960 INFO L225 Difference]: With dead ends: 26951 [2023-11-06 22:47:28,960 INFO L226 Difference]: Without dead ends: 18349 [2023-11-06 22:47:28,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:28,973 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 1361 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 4185 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 5615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:28,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 1600 Invalid, 5615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4185 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-11-06 22:47:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18349 states. [2023-11-06 22:47:29,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18349 to 18334. [2023-11-06 22:47:29,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18334 states, 18333 states have (on average 1.2809687448862705) internal successors, (23484), 18333 states have internal predecessors, (23484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18334 states to 18334 states and 23484 transitions. [2023-11-06 22:47:29,317 INFO L78 Accepts]: Start accepts. Automaton has 18334 states and 23484 transitions. Word has length 618 [2023-11-06 22:47:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:29,318 INFO L495 AbstractCegarLoop]: Abstraction has 18334 states and 23484 transitions. [2023-11-06 22:47:29,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand 18334 states and 23484 transitions. [2023-11-06 22:47:29,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-11-06 22:47:29,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:29,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:29,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:47:29,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:29,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:29,337 INFO L85 PathProgramCache]: Analyzing trace with hash 108929792, now seen corresponding path program 1 times [2023-11-06 22:47:29,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:29,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677741145] [2023-11-06 22:47:29,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:29,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:31,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:31,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677741145] [2023-11-06 22:47:31,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677741145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:31,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:31,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:47:31,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920490416] [2023-11-06 22:47:31,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:31,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:47:31,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:31,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:47:31,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:47:31,068 INFO L87 Difference]: Start difference. First operand 18334 states and 23484 transitions. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:42,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:42,830 INFO L93 Difference]: Finished difference Result 42164 states and 53383 transitions. [2023-11-06 22:47:42,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:47:42,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 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 633 [2023-11-06 22:47:42,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:42,891 INFO L225 Difference]: With dead ends: 42164 [2023-11-06 22:47:42,892 INFO L226 Difference]: Without dead ends: 25171 [2023-11-06 22:47:42,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:47:42,913 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 2256 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 8682 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 9094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 8682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:42,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2256 Valid, 1867 Invalid, 9094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 8682 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-11-06 22:47:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25171 states. [2023-11-06 22:47:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25171 to 25166. [2023-11-06 22:47:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25166 states, 25165 states have (on average 1.2144247963441288) internal successors, (30561), 25165 states have internal predecessors, (30561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:43,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 30561 transitions. [2023-11-06 22:47:43,370 INFO L78 Accepts]: Start accepts. Automaton has 25166 states and 30561 transitions. Word has length 633 [2023-11-06 22:47:43,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:43,373 INFO L495 AbstractCegarLoop]: Abstraction has 25166 states and 30561 transitions. [2023-11-06 22:47:43,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:43,375 INFO L276 IsEmpty]: Start isEmpty. Operand 25166 states and 30561 transitions. [2023-11-06 22:47:43,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-11-06 22:47:43,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:43,387 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:43,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:47:43,388 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:43,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:43,388 INFO L85 PathProgramCache]: Analyzing trace with hash 699548916, now seen corresponding path program 1 times [2023-11-06 22:47:43,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:43,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257297274] [2023-11-06 22:47:43,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:43,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-06 22:47:45,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:45,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257297274] [2023-11-06 22:47:45,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257297274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:45,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:45,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:47:45,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122960490] [2023-11-06 22:47:45,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:45,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:45,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:45,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:45,387 INFO L87 Difference]: Start difference. First operand 25166 states and 30561 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:53,917 INFO L93 Difference]: Finished difference Result 47620 states and 60784 transitions. [2023-11-06 22:47:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:53,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 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 678 [2023-11-06 22:47:53,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:53,982 INFO L225 Difference]: With dead ends: 47620 [2023-11-06 22:47:53,983 INFO L226 Difference]: Without dead ends: 30653 [2023-11-06 22:47:54,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:54,003 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 1817 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4017 mSolverCounterSat, 2017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 6034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2017 IncrementalHoareTripleChecker+Valid, 4017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:54,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 772 Invalid, 6034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2017 Valid, 4017 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-06 22:47:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30653 states. [2023-11-06 22:47:54,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30653 to 29281. [2023-11-06 22:47:54,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29281 states, 29280 states have (on average 1.2540983606557377) internal successors, (36720), 29280 states have internal predecessors, (36720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29281 states to 29281 states and 36720 transitions. [2023-11-06 22:47:54,435 INFO L78 Accepts]: Start accepts. Automaton has 29281 states and 36720 transitions. Word has length 678 [2023-11-06 22:47:54,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:54,436 INFO L495 AbstractCegarLoop]: Abstraction has 29281 states and 36720 transitions. [2023-11-06 22:47:54,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:54,436 INFO L276 IsEmpty]: Start isEmpty. Operand 29281 states and 36720 transitions. [2023-11-06 22:47:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2023-11-06 22:47:54,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:54,450 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:54,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:47:54,450 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:54,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:54,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1913122830, now seen corresponding path program 1 times [2023-11-06 22:47:54,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:54,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979611340] [2023-11-06 22:47:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:54,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-06 22:47:55,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:55,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979611340] [2023-11-06 22:47:55,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979611340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:55,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:55,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:47:55,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118469926] [2023-11-06 22:47:55,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:55,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:47:55,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:55,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:47:55,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:47:55,494 INFO L87 Difference]: Start difference. First operand 29281 states and 36720 transitions. Second operand has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:11,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:11,792 INFO L93 Difference]: Finished difference Result 103746 states and 131352 transitions. [2023-11-06 22:48:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:48:11,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 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 893 [2023-11-06 22:48:11,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:11,880 INFO L225 Difference]: With dead ends: 103746 [2023-11-06 22:48:11,880 INFO L226 Difference]: Without dead ends: 75832 [2023-11-06 22:48:11,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:48:11,904 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 3321 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 9232 mSolverCounterSat, 2671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3321 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 11903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2671 IncrementalHoareTripleChecker+Valid, 9232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:11,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3321 Valid, 1115 Invalid, 11903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2671 Valid, 9232 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2023-11-06 22:48:11,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75832 states. [2023-11-06 22:48:12,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75832 to 74393. [2023-11-06 22:48:12,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74393 states, 74392 states have (on average 1.1997929884933864) internal successors, (89255), 74392 states have internal predecessors, (89255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74393 states to 74393 states and 89255 transitions. [2023-11-06 22:48:12,952 INFO L78 Accepts]: Start accepts. Automaton has 74393 states and 89255 transitions. Word has length 893 [2023-11-06 22:48:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:12,953 INFO L495 AbstractCegarLoop]: Abstraction has 74393 states and 89255 transitions. [2023-11-06 22:48:12,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 74393 states and 89255 transitions. [2023-11-06 22:48:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2023-11-06 22:48:12,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:12,968 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:12,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:48:12,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:12,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:12,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1680144238, now seen corresponding path program 1 times [2023-11-06 22:48:12,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:12,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612227696] [2023-11-06 22:48:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:12,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 398 proven. 313 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 22:48:17,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:17,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612227696] [2023-11-06 22:48:17,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612227696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:17,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014542051] [2023-11-06 22:48:17,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:17,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:17,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:17,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:17,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:48:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:17,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:48:17,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2023-11-06 22:48:17,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:48:17,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014542051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:17,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:48:17,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-06 22:48:17,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175286881] [2023-11-06 22:48:17,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:17,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:17,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:17,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:48:17,644 INFO L87 Difference]: Start difference. First operand 74393 states and 89255 transitions. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:25,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:25,685 INFO L93 Difference]: Finished difference Result 152879 states and 186659 transitions. [2023-11-06 22:48:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:25,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 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 902 [2023-11-06 22:48:25,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:25,787 INFO L225 Difference]: With dead ends: 152879 [2023-11-06 22:48:25,787 INFO L226 Difference]: Without dead ends: 92145 [2023-11-06 22:48:25,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:48:25,821 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 1663 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4657 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 5665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 4657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:25,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 764 Invalid, 5665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 4657 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-06 22:48:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92145 states. [2023-11-06 22:48:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92145 to 90775. [2023-11-06 22:48:27,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90775 states, 90774 states have (on average 1.1880824905810035) internal successors, (107847), 90774 states have internal predecessors, (107847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90775 states to 90775 states and 107847 transitions. [2023-11-06 22:48:27,528 INFO L78 Accepts]: Start accepts. Automaton has 90775 states and 107847 transitions. Word has length 902 [2023-11-06 22:48:27,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:27,545 INFO L495 AbstractCegarLoop]: Abstraction has 90775 states and 107847 transitions. [2023-11-06 22:48:27,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 90775 states and 107847 transitions. [2023-11-06 22:48:27,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2023-11-06 22:48:27,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:27,565 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:27,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:27,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:27,771 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:27,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:27,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2109439225, now seen corresponding path program 1 times [2023-11-06 22:48:27,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:27,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573510165] [2023-11-06 22:48:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:27,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 289 proven. 366 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-06 22:48:30,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573510165] [2023-11-06 22:48:30,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573510165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094405454] [2023-11-06 22:48:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:30,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:30,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:30,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:30,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:48:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:30,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:48:30,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-11-06 22:48:30,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:48:30,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094405454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:30,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:48:30,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-06 22:48:30,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495677242] [2023-11-06 22:48:30,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:30,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:30,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:30,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:30,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:48:30,837 INFO L87 Difference]: Start difference. First operand 90775 states and 107847 transitions. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:40,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:40,311 INFO L93 Difference]: Finished difference Result 219886 states and 262083 transitions. [2023-11-06 22:48:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:40,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 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 902 [2023-11-06 22:48:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:40,491 INFO L225 Difference]: With dead ends: 219886 [2023-11-06 22:48:40,491 INFO L226 Difference]: Without dead ends: 130478 [2023-11-06 22:48:40,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:48:40,521 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 1560 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 4222 mSolverCounterSat, 1741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 5963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1741 IncrementalHoareTripleChecker+Valid, 4222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:40,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 1428 Invalid, 5963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1741 Valid, 4222 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-06 22:48:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130478 states. [2023-11-06 22:48:42,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130478 to 129006. [2023-11-06 22:48:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129006 states, 129005 states have (on average 1.1510561606139298) internal successors, (148492), 129005 states have internal predecessors, (148492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129006 states to 129006 states and 148492 transitions. [2023-11-06 22:48:42,573 INFO L78 Accepts]: Start accepts. Automaton has 129006 states and 148492 transitions. Word has length 902 [2023-11-06 22:48:42,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:42,574 INFO L495 AbstractCegarLoop]: Abstraction has 129006 states and 148492 transitions. [2023-11-06 22:48:42,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:42,575 INFO L276 IsEmpty]: Start isEmpty. Operand 129006 states and 148492 transitions. [2023-11-06 22:48:42,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2023-11-06 22:48:42,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:42,626 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:42,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:42,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:48:42,827 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:42,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:42,827 INFO L85 PathProgramCache]: Analyzing trace with hash -883627158, now seen corresponding path program 1 times [2023-11-06 22:48:42,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:42,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093584323] [2023-11-06 22:48:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:42,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 646 proven. 129 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-11-06 22:48:44,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:44,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093584323] [2023-11-06 22:48:44,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093584323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:44,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176302783] [2023-11-06 22:48:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:44,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:44,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:44,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:44,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:48:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:44,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:48:44,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 915 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-11-06 22:48:45,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:48:45,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176302783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:45,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:48:45,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-06 22:48:45,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896038646] [2023-11-06 22:48:45,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:45,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:45,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:45,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:45,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:48:45,548 INFO L87 Difference]: Start difference. First operand 129006 states and 148492 transitions. Second operand has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:55,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:55,178 INFO L93 Difference]: Finished difference Result 337165 states and 393118 transitions. [2023-11-06 22:48:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:55,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 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 1018 [2023-11-06 22:48:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:55,475 INFO L225 Difference]: With dead ends: 337165 [2023-11-06 22:48:55,476 INFO L226 Difference]: Without dead ends: 225912 [2023-11-06 22:48:55,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1017 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:48:55,536 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 2378 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4039 mSolverCounterSat, 1466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 5505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1466 IncrementalHoareTripleChecker+Valid, 4039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:55,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 795 Invalid, 5505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1466 Valid, 4039 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-06 22:48:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225912 states. [2023-11-06 22:48:58,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225912 to 199975. [2023-11-06 22:48:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199975 states, 199974 states have (on average 1.1530548971366277) internal successors, (230581), 199974 states have internal predecessors, (230581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:58,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199975 states to 199975 states and 230581 transitions. [2023-11-06 22:48:58,415 INFO L78 Accepts]: Start accepts. Automaton has 199975 states and 230581 transitions. Word has length 1018 [2023-11-06 22:48:58,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:58,415 INFO L495 AbstractCegarLoop]: Abstraction has 199975 states and 230581 transitions. [2023-11-06 22:48:58,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:58,416 INFO L276 IsEmpty]: Start isEmpty. Operand 199975 states and 230581 transitions. [2023-11-06 22:48:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2023-11-06 22:48:58,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:58,432 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:58,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:58,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:48:58,638 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:58,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash 981094297, now seen corresponding path program 1 times [2023-11-06 22:48:58,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:58,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431460771] [2023-11-06 22:48:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:58,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 863 proven. 66 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-06 22:49:01,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:01,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431460771] [2023-11-06 22:49:01,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431460771] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:01,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245246386] [2023-11-06 22:49:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:01,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:01,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:01,957 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:01,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:49:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:49:02,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 885 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-11-06 22:49:02,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:02,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245246386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:02,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:02,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-06 22:49:02,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043650617] [2023-11-06 22:49:02,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:02,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:02,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:02,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:02,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:02,565 INFO L87 Difference]: Start difference. First operand 199975 states and 230581 transitions. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:12,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:12,472 INFO L93 Difference]: Finished difference Result 398664 states and 459936 transitions. [2023-11-06 22:49:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:12,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 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 1057 [2023-11-06 22:49:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:12,769 INFO L225 Difference]: With dead ends: 398664 [2023-11-06 22:49:12,770 INFO L226 Difference]: Without dead ends: 201421 [2023-11-06 22:49:12,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1057 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:12,854 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1382 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4914 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 5358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 4914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:12,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 1841 Invalid, 5358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 4914 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-11-06 22:49:13,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201421 states. [2023-11-06 22:49:15,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201421 to 201343. [2023-11-06 22:49:15,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201343 states, 201342 states have (on average 1.138306960296411) internal successors, (229189), 201342 states have internal predecessors, (229189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201343 states to 201343 states and 229189 transitions. [2023-11-06 22:49:16,206 INFO L78 Accepts]: Start accepts. Automaton has 201343 states and 229189 transitions. Word has length 1057 [2023-11-06 22:49:16,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:16,207 INFO L495 AbstractCegarLoop]: Abstraction has 201343 states and 229189 transitions. [2023-11-06 22:49:16,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:16,207 INFO L276 IsEmpty]: Start isEmpty. Operand 201343 states and 229189 transitions. [2023-11-06 22:49:16,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2023-11-06 22:49:16,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:16,222 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:16,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:16,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c63a9ce-5ebd-44ac-a623-1e29110a9a2c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:49:16,424 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:16,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:16,424 INFO L85 PathProgramCache]: Analyzing trace with hash 735657204, now seen corresponding path program 1 times [2023-11-06 22:49:16,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:16,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256016377] [2023-11-06 22:49:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:16,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-11-06 22:49:17,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:17,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256016377] [2023-11-06 22:49:17,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256016377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:17,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:17,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:17,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030088443] [2023-11-06 22:49:17,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:17,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:17,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:17,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:17,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:17,541 INFO L87 Difference]: Start difference. First operand 201343 states and 229189 transitions. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:26,236 INFO L93 Difference]: Finished difference Result 408144 states and 463983 transitions. [2023-11-06 22:49:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:26,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 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 1069 [2023-11-06 22:49:26,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:26,564 INFO L225 Difference]: With dead ends: 408144 [2023-11-06 22:49:26,564 INFO L226 Difference]: Without dead ends: 204071 [2023-11-06 22:49:26,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:26,667 INFO L413 NwaCegarLoop]: 2867 mSDtfsCounter, 1471 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 3662 mSolverCounterSat, 1255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 4917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1255 IncrementalHoareTripleChecker+Valid, 3662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:26,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 3046 Invalid, 4917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1255 Valid, 3662 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-06 22:49:26,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204071 states.