./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label53.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label53.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --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 2c75028c45c8bfe0f1d4af80312d164394cbdbf8280624d50449e86195205937 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:42:36,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:42:36,519 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:42:36,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:42:36,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:42:36,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:42:36,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:42:36,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:42:36,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:42:36,574 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:42:36,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:42:36,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:42:36,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:42:36,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:42:36,577 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:42:36,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:42:36,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:42:36,578 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:42:36,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:42:36,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:42:36,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:42:36,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:42:36,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:42:36,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:42:36,579 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:42:36,579 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:42:36,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:42:36,579 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:42:36,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:42:36,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:42:36,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:42:36,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:42:36,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:42:36,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:42:36,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:42:36,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:42:36,582 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:42:36,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:42:36,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:42:36,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:42:36,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:42:36,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:42:36,583 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 2c75028c45c8bfe0f1d4af80312d164394cbdbf8280624d50449e86195205937 [2024-11-13 14:42:36,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:42:36,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:42:36,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:42:36,981 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:42:36,981 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:42:36,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem03_label53.c Unable to find full path for "g++" [2024-11-13 14:42:38,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:42:39,327 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:42:39,327 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/sv-benchmarks/c/eca-rers2012/Problem03_label53.c [2024-11-13 14:42:39,348 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/data/d04903fe2/01e619fd83224d6db3d1a26f41765902/FLAG4cebe0832 [2024-11-13 14:42:39,368 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/data/d04903fe2/01e619fd83224d6db3d1a26f41765902 [2024-11-13 14:42:39,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:42:39,371 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:42:39,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:42:39,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:42:39,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:42:39,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:42:39" (1/1) ... [2024-11-13 14:42:39,377 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b4448e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:39, skipping insertion in model container [2024-11-13 14:42:39,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:42:39" (1/1) ... [2024-11-13 14:42:39,455 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:42:40,031 WARN L250 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_38538253-e002-4460-a4ff-55b0771f1c98/sv-benchmarks/c/eca-rers2012/Problem03_label53.c[60419,60432] [2024-11-13 14:42:40,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:42:40,079 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:42:40,349 WARN L250 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_38538253-e002-4460-a4ff-55b0771f1c98/sv-benchmarks/c/eca-rers2012/Problem03_label53.c[60419,60432] [2024-11-13 14:42:40,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:42:40,390 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:42:40,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40 WrapperNode [2024-11-13 14:42:40,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:42:40,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:42:40,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:42:40,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:42:40,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (1/1) ... [2024-11-13 14:42:40,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (1/1) ... [2024-11-13 14:42:40,562 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-13 14:42:40,563 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:42:40,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:42:40,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:42:40,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:42:40,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (1/1) ... [2024-11-13 14:42:40,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (1/1) ... [2024-11-13 14:42:40,602 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (1/1) ... [2024-11-13 14:42:40,646 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 14:42:40,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (1/1) ... [2024-11-13 14:42:40,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (1/1) ... [2024-11-13 14:42:40,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (1/1) ... [2024-11-13 14:42:40,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (1/1) ... [2024-11-13 14:42:40,759 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (1/1) ... [2024-11-13 14:42:40,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (1/1) ... [2024-11-13 14:42:40,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:42:40,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:42:40,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:42:40,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:42:40,791 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (1/1) ... [2024-11-13 14:42:40,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:42:40,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:42:40,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:42:40,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:42:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:42:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:42:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:42:40,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:42:40,964 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:42:40,967 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:42:43,778 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-13 14:42:43,779 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:42:43,811 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:42:43,811 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:42:43,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:42:43 BoogieIcfgContainer [2024-11-13 14:42:43,812 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:42:43,820 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:42:43,820 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:42:43,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:42:43,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:42:39" (1/3) ... [2024-11-13 14:42:43,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1133823c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:42:43, skipping insertion in model container [2024-11-13 14:42:43,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:42:40" (2/3) ... [2024-11-13 14:42:43,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1133823c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:42:43, skipping insertion in model container [2024-11-13 14:42:43,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:42:43" (3/3) ... [2024-11-13 14:42:43,829 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label53.c [2024-11-13 14:42:43,847 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:42:43,850 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label53.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 14:42:43,939 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:42:43,958 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@17f6cab4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:42:43,958 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:42:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-13 14:42:43,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:42:43,992 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:42:43,992 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:42:43,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:42:44,000 INFO L85 PathProgramCache]: Analyzing trace with hash 443978474, now seen corresponding path program 1 times [2024-11-13 14:42:44,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:42:44,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148936817] [2024-11-13 14:42:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:42:44,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:42:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:42:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:42:45,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:42:45,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148936817] [2024-11-13 14:42:45,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148936817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:42:45,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:42:45,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:42:45,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834944891] [2024-11-13 14:42:45,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:42:45,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:42:45,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:42:45,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:42:45,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:42:45,327 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:47,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:42:47,105 INFO L93 Difference]: Finished difference Result 829 states and 1478 transitions. [2024-11-13 14:42:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:42:47,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2024-11-13 14:42:47,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:42:47,121 INFO L225 Difference]: With dead ends: 829 [2024-11-13 14:42:47,121 INFO L226 Difference]: Without dead ends: 463 [2024-11-13 14:42:47,128 INFO L431 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 [2024-11-13 14:42:47,132 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 97 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:42:47,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 127 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 14:42:47,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-13 14:42:47,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2024-11-13 14:42:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.6183035714285714) internal successors, (725), 448 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 725 transitions. [2024-11-13 14:42:47,239 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 725 transitions. Word has length 194 [2024-11-13 14:42:47,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:42:47,240 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 725 transitions. [2024-11-13 14:42:47,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:47,241 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 725 transitions. [2024-11-13 14:42:47,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-13 14:42:47,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:42:47,249 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:42:47,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:42:47,250 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:42:47,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:42:47,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1950724089, now seen corresponding path program 1 times [2024-11-13 14:42:47,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:42:47,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033099072] [2024-11-13 14:42:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:42:47,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:42:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:42:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:42:47,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:42:47,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033099072] [2024-11-13 14:42:47,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033099072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:42:47,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:42:47,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:42:47,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530715645] [2024-11-13 14:42:47,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:42:47,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:42:47,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:42:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:42:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:42:47,764 INFO L87 Difference]: Start difference. First operand 449 states and 725 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:42:48,946 INFO L93 Difference]: Finished difference Result 1319 states and 2138 transitions. [2024-11-13 14:42:48,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:42:48,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2024-11-13 14:42:48,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:42:48,952 INFO L225 Difference]: With dead ends: 1319 [2024-11-13 14:42:48,952 INFO L226 Difference]: Without dead ends: 872 [2024-11-13 14:42:48,958 INFO L431 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 [2024-11-13 14:42:48,959 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:42:48,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 151 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:42:48,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-11-13 14:42:49,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 870. [2024-11-13 14:42:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5120828538550057) internal successors, (1314), 869 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1314 transitions. [2024-11-13 14:42:49,016 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1314 transitions. Word has length 199 [2024-11-13 14:42:49,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:42:49,019 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1314 transitions. [2024-11-13 14:42:49,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:49,020 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1314 transitions. [2024-11-13 14:42:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-13 14:42:49,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:42:49,027 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:42:49,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:42:49,032 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:42:49,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:42:49,033 INFO L85 PathProgramCache]: Analyzing trace with hash -556767760, now seen corresponding path program 1 times [2024-11-13 14:42:49,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:42:49,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195442188] [2024-11-13 14:42:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:42:49,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:42:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:42:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:42:49,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:42:49,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195442188] [2024-11-13 14:42:49,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195442188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:42:49,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:42:49,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:42:49,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152430155] [2024-11-13 14:42:49,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:42:49,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:42:49,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:42:49,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:42:49,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:42:49,645 INFO L87 Difference]: Start difference. First operand 870 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:42:50,833 INFO L93 Difference]: Finished difference Result 2554 states and 3869 transitions. [2024-11-13 14:42:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:42:50,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2024-11-13 14:42:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:42:50,841 INFO L225 Difference]: With dead ends: 2554 [2024-11-13 14:42:50,841 INFO L226 Difference]: Without dead ends: 1686 [2024-11-13 14:42:50,843 INFO L431 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 [2024-11-13 14:42:50,844 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 232 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:42:50,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 417 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:42:50,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2024-11-13 14:42:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2024-11-13 14:42:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.3363042186571599) internal successors, (2249), 1683 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:50,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2249 transitions. [2024-11-13 14:42:50,929 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2249 transitions. Word has length 214 [2024-11-13 14:42:50,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:42:50,930 INFO L471 AbstractCegarLoop]: Abstraction has 1684 states and 2249 transitions. [2024-11-13 14:42:50,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2249 transitions. [2024-11-13 14:42:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-13 14:42:50,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:42:50,936 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:42:50,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:42:50,937 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:42:50,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:42:50,938 INFO L85 PathProgramCache]: Analyzing trace with hash -667563412, now seen corresponding path program 1 times [2024-11-13 14:42:50,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:42:50,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449623599] [2024-11-13 14:42:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:42:50,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:42:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:42:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:42:51,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:42:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449623599] [2024-11-13 14:42:51,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449623599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:42:51,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:42:51,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:42:51,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780221960] [2024-11-13 14:42:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:42:51,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:42:51,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:42:51,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:42:51,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:42:51,409 INFO L87 Difference]: Start difference. First operand 1684 states and 2249 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:52,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:42:52,563 INFO L93 Difference]: Finished difference Result 5005 states and 6687 transitions. [2024-11-13 14:42:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:42:52,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2024-11-13 14:42:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:42:52,576 INFO L225 Difference]: With dead ends: 5005 [2024-11-13 14:42:52,576 INFO L226 Difference]: Without dead ends: 3323 [2024-11-13 14:42:52,580 INFO L431 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 [2024-11-13 14:42:52,581 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 241 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:42:52,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 174 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:42:52,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2024-11-13 14:42:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3320. [2024-11-13 14:42:52,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3319 states have (on average 1.2847243145525762) internal successors, (4264), 3319 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 4264 transitions. [2024-11-13 14:42:52,680 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 4264 transitions. Word has length 217 [2024-11-13 14:42:52,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:42:52,680 INFO L471 AbstractCegarLoop]: Abstraction has 3320 states and 4264 transitions. [2024-11-13 14:42:52,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:52,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 4264 transitions. [2024-11-13 14:42:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-13 14:42:52,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:42:52,691 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2024-11-13 14:42:52,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:42:52,692 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:42:52,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:42:52,693 INFO L85 PathProgramCache]: Analyzing trace with hash 294399223, now seen corresponding path program 1 times [2024-11-13 14:42:52,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:42:52,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105692772] [2024-11-13 14:42:52,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:42:52,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:42:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:42:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:42:53,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:42:53,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105692772] [2024-11-13 14:42:53,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105692772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:42:53,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:42:53,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:42:53,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400548437] [2024-11-13 14:42:53,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:42:53,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:42:53,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:42:53,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:42:53,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:42:53,291 INFO L87 Difference]: Start difference. First operand 3320 states and 4264 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:54,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:42:54,631 INFO L93 Difference]: Finished difference Result 9900 states and 12717 transitions. [2024-11-13 14:42:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:42:54,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 229 [2024-11-13 14:42:54,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:42:54,656 INFO L225 Difference]: With dead ends: 9900 [2024-11-13 14:42:54,657 INFO L226 Difference]: Without dead ends: 6582 [2024-11-13 14:42:54,662 INFO L431 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 [2024-11-13 14:42:54,665 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:42:54,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 418 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:42:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6582 states. [2024-11-13 14:42:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 6577. [2024-11-13 14:42:54,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6577 states, 6576 states have (on average 1.2244525547445255) internal successors, (8052), 6576 states have internal predecessors, (8052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:54,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6577 states to 6577 states and 8052 transitions. [2024-11-13 14:42:54,838 INFO L78 Accepts]: Start accepts. Automaton has 6577 states and 8052 transitions. Word has length 229 [2024-11-13 14:42:54,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:42:54,839 INFO L471 AbstractCegarLoop]: Abstraction has 6577 states and 8052 transitions. [2024-11-13 14:42:54,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:54,839 INFO L276 IsEmpty]: Start isEmpty. Operand 6577 states and 8052 transitions. [2024-11-13 14:42:54,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-11-13 14:42:54,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:42:54,851 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:42:54,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:42:54,851 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:42:54,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:42:54,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1132867128, now seen corresponding path program 1 times [2024-11-13 14:42:54,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:42:54,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266286871] [2024-11-13 14:42:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:42:54,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:42:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:42:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:42:55,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:42:55,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266286871] [2024-11-13 14:42:55,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266286871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:42:55,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:42:55,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:42:55,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846862477] [2024-11-13 14:42:55,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:42:55,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:42:55,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:42:55,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:42:55,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:42:55,454 INFO L87 Difference]: Start difference. First operand 6577 states and 8052 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:56,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:42:56,686 INFO L93 Difference]: Finished difference Result 16215 states and 19822 transitions. [2024-11-13 14:42:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:42:56,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2024-11-13 14:42:56,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:42:56,721 INFO L225 Difference]: With dead ends: 16215 [2024-11-13 14:42:56,722 INFO L226 Difference]: Without dead ends: 9640 [2024-11-13 14:42:56,730 INFO L431 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 [2024-11-13 14:42:56,732 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 203 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:42:56,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 155 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:42:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9640 states. [2024-11-13 14:42:56,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9640 to 9638. [2024-11-13 14:42:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9638 states, 9637 states have (on average 1.2036940956729272) internal successors, (11600), 9637 states have internal predecessors, (11600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9638 states to 9638 states and 11600 transitions. [2024-11-13 14:42:56,954 INFO L78 Accepts]: Start accepts. Automaton has 9638 states and 11600 transitions. Word has length 235 [2024-11-13 14:42:56,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:42:56,955 INFO L471 AbstractCegarLoop]: Abstraction has 9638 states and 11600 transitions. [2024-11-13 14:42:56,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 9638 states and 11600 transitions. [2024-11-13 14:42:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-13 14:42:56,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:42:56,974 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:42:56,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:42:56,975 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:42:56,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:42:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash -243165906, now seen corresponding path program 1 times [2024-11-13 14:42:56,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:42:56,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783166040] [2024-11-13 14:42:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:42:56,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:42:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:42:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:42:57,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:42:57,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783166040] [2024-11-13 14:42:57,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783166040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:42:57,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653277687] [2024-11-13 14:42:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:42:57,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:42:57,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:42:57,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:42:57,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:42:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:42:57,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:42:57,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:42:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:42:58,317 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:42:58,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653277687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:42:58,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:42:58,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:42:58,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712319836] [2024-11-13 14:42:58,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:42:58,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:42:58,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:42:58,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:42:58,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:42:58,319 INFO L87 Difference]: Start difference. First operand 9638 states and 11600 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:42:59,520 INFO L93 Difference]: Finished difference Result 23771 states and 28943 transitions. [2024-11-13 14:42:59,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:42:59,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2024-11-13 14:42:59,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:42:59,587 INFO L225 Difference]: With dead ends: 23771 [2024-11-13 14:42:59,587 INFO L226 Difference]: Without dead ends: 14135 [2024-11-13 14:42:59,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:42:59,598 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 51 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:42:59,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 165 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:42:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14135 states. [2024-11-13 14:42:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14135 to 12486. [2024-11-13 14:42:59,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12486 states, 12485 states have (on average 1.2382058470164197) internal successors, (15459), 12485 states have internal predecessors, (15459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12486 states to 12486 states and 15459 transitions. [2024-11-13 14:42:59,909 INFO L78 Accepts]: Start accepts. Automaton has 12486 states and 15459 transitions. Word has length 242 [2024-11-13 14:42:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:42:59,910 INFO L471 AbstractCegarLoop]: Abstraction has 12486 states and 15459 transitions. [2024-11-13 14:42:59,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:42:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 12486 states and 15459 transitions. [2024-11-13 14:42:59,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-13 14:42:59,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:42:59,933 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:42:59,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:43:00,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:43:00,134 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:43:00,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:43:00,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1957712956, now seen corresponding path program 1 times [2024-11-13 14:43:00,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:43:00,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047605768] [2024-11-13 14:43:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:00,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:43:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 14:43:00,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:43:00,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047605768] [2024-11-13 14:43:00,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047605768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:43:00,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:43:00,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:43:00,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794518337] [2024-11-13 14:43:00,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:43:00,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:43:00,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:43:00,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:43:00,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:43:00,361 INFO L87 Difference]: Start difference. First operand 12486 states and 15459 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:00,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:43:00,864 INFO L93 Difference]: Finished difference Result 37232 states and 46135 transitions. [2024-11-13 14:43:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:43:00,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 255 [2024-11-13 14:43:00,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:43:00,924 INFO L225 Difference]: With dead ends: 37232 [2024-11-13 14:43:00,924 INFO L226 Difference]: Without dead ends: 24748 [2024-11-13 14:43:00,941 INFO L431 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 [2024-11-13 14:43:00,942 INFO L432 NwaCegarLoop]: 647 mSDtfsCounter, 332 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:43:00,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 942 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:43:00,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24748 states. [2024-11-13 14:43:01,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24748 to 24745. [2024-11-13 14:43:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24745 states, 24744 states have (on average 1.2181538958939542) internal successors, (30142), 24744 states have internal predecessors, (30142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:01,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24745 states to 24745 states and 30142 transitions. [2024-11-13 14:43:01,583 INFO L78 Accepts]: Start accepts. Automaton has 24745 states and 30142 transitions. Word has length 255 [2024-11-13 14:43:01,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:43:01,583 INFO L471 AbstractCegarLoop]: Abstraction has 24745 states and 30142 transitions. [2024-11-13 14:43:01,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 24745 states and 30142 transitions. [2024-11-13 14:43:01,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-13 14:43:01,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:43:01,624 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:43:01,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:43:01,624 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:43:01,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:43:01,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2075355840, now seen corresponding path program 1 times [2024-11-13 14:43:01,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:43:01,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142785263] [2024-11-13 14:43:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:01,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:43:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:01,965 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 14:43:01,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:43:01,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142785263] [2024-11-13 14:43:01,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142785263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:43:01,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:43:01,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:43:01,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600792849] [2024-11-13 14:43:01,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:43:01,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:43:01,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:43:01,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:43:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:43:01,971 INFO L87 Difference]: Start difference. First operand 24745 states and 30142 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:03,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:43:03,343 INFO L93 Difference]: Finished difference Result 61465 states and 76115 transitions. [2024-11-13 14:43:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:43:03,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 261 [2024-11-13 14:43:03,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:43:03,429 INFO L225 Difference]: With dead ends: 61465 [2024-11-13 14:43:03,429 INFO L226 Difference]: Without dead ends: 36722 [2024-11-13 14:43:03,454 INFO L431 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 [2024-11-13 14:43:03,455 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 216 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:43:03,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 199 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:43:03,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36722 states. [2024-11-13 14:43:03,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36722 to 36722. [2024-11-13 14:43:03,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36722 states, 36721 states have (on average 1.1719179760899758) internal successors, (43034), 36721 states have internal predecessors, (43034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:04,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36722 states to 36722 states and 43034 transitions. [2024-11-13 14:43:04,228 INFO L78 Accepts]: Start accepts. Automaton has 36722 states and 43034 transitions. Word has length 261 [2024-11-13 14:43:04,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:43:04,228 INFO L471 AbstractCegarLoop]: Abstraction has 36722 states and 43034 transitions. [2024-11-13 14:43:04,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:04,229 INFO L276 IsEmpty]: Start isEmpty. Operand 36722 states and 43034 transitions. [2024-11-13 14:43:04,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-13 14:43:04,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:43:04,266 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 14:43:04,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:43:04,267 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:43:04,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:43:04,268 INFO L85 PathProgramCache]: Analyzing trace with hash 313544470, now seen corresponding path program 1 times [2024-11-13 14:43:04,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:43:04,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672295997] [2024-11-13 14:43:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:04,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:43:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:05,071 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:43:05,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:43:05,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672295997] [2024-11-13 14:43:05,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672295997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:43:05,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:43:05,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:43:05,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871264862] [2024-11-13 14:43:05,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:43:05,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:43:05,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:43:05,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:43:05,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:43:05,074 INFO L87 Difference]: Start difference. First operand 36722 states and 43034 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:06,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:43:06,278 INFO L93 Difference]: Finished difference Result 75678 states and 88489 transitions. [2024-11-13 14:43:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:43:06,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2024-11-13 14:43:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:43:06,373 INFO L225 Difference]: With dead ends: 75678 [2024-11-13 14:43:06,373 INFO L226 Difference]: Without dead ends: 38958 [2024-11-13 14:43:06,398 INFO L431 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 [2024-11-13 14:43:06,398 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 135 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:43:06,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 201 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:43:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38958 states. [2024-11-13 14:43:07,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38958 to 38549. [2024-11-13 14:43:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38549 states, 38548 states have (on average 1.1677648645844143) internal successors, (45015), 38548 states have internal predecessors, (45015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38549 states to 38549 states and 45015 transitions. [2024-11-13 14:43:07,130 INFO L78 Accepts]: Start accepts. Automaton has 38549 states and 45015 transitions. Word has length 268 [2024-11-13 14:43:07,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:43:07,131 INFO L471 AbstractCegarLoop]: Abstraction has 38549 states and 45015 transitions. [2024-11-13 14:43:07,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:07,131 INFO L276 IsEmpty]: Start isEmpty. Operand 38549 states and 45015 transitions. [2024-11-13 14:43:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-13 14:43:07,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:43:07,181 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-11-13 14:43:07,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:43:07,182 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:43:07,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:43:07,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1898015633, now seen corresponding path program 1 times [2024-11-13 14:43:07,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:43:07,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68685173] [2024-11-13 14:43:07,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:07,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:43:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-13 14:43:08,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:43:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68685173] [2024-11-13 14:43:08,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68685173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:43:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254275497] [2024-11-13 14:43:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:08,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:43:08,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:43:08,022 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:43:08,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:43:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:08,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:43:08,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:43:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-13 14:43:08,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:43:08,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254275497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:43:08,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:43:08,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:43:08,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751336117] [2024-11-13 14:43:08,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:43:08,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:43:08,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:43:08,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:43:08,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:43:08,429 INFO L87 Difference]: Start difference. First operand 38549 states and 45015 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:10,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:43:10,029 INFO L93 Difference]: Finished difference Result 73894 states and 86259 transitions. [2024-11-13 14:43:10,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:43:10,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 288 [2024-11-13 14:43:10,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:43:10,094 INFO L225 Difference]: With dead ends: 73894 [2024-11-13 14:43:10,095 INFO L226 Difference]: Without dead ends: 35550 [2024-11-13 14:43:10,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:43:10,111 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:43:10,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 404 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:43:10,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35550 states. [2024-11-13 14:43:10,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35550 to 35504. [2024-11-13 14:43:10,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35504 states, 35503 states have (on average 1.1567191504943244) internal successors, (41067), 35503 states have internal predecessors, (41067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:10,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35504 states to 35504 states and 41067 transitions. [2024-11-13 14:43:10,558 INFO L78 Accepts]: Start accepts. Automaton has 35504 states and 41067 transitions. Word has length 288 [2024-11-13 14:43:10,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:43:10,560 INFO L471 AbstractCegarLoop]: Abstraction has 35504 states and 41067 transitions. [2024-11-13 14:43:10,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:10,560 INFO L276 IsEmpty]: Start isEmpty. Operand 35504 states and 41067 transitions. [2024-11-13 14:43:10,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-13 14:43:10,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:43:10,596 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:43:10,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:43:10,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 14:43:10,797 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:43:10,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:43:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash 470131923, now seen corresponding path program 1 times [2024-11-13 14:43:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:43:10,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741921102] [2024-11-13 14:43:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:10,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:43:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:43:11,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:43:11,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741921102] [2024-11-13 14:43:11,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741921102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:43:11,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:43:11,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:43:11,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704871472] [2024-11-13 14:43:11,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:43:11,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:43:11,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:43:11,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:43:11,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:43:11,236 INFO L87 Difference]: Start difference. First operand 35504 states and 41067 transitions. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:43:13,082 INFO L93 Difference]: Finished difference Result 79811 states and 92770 transitions. [2024-11-13 14:43:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:43:13,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2024-11-13 14:43:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:43:13,150 INFO L225 Difference]: With dead ends: 79811 [2024-11-13 14:43:13,150 INFO L226 Difference]: Without dead ends: 44512 [2024-11-13 14:43:13,174 INFO L431 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 [2024-11-13 14:43:13,175 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 385 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:43:13,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 158 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 14:43:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44512 states. [2024-11-13 14:43:13,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44512 to 42854. [2024-11-13 14:43:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42854 states, 42853 states have (on average 1.1558583996452991) internal successors, (49532), 42853 states have internal predecessors, (49532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42854 states to 42854 states and 49532 transitions. [2024-11-13 14:43:13,746 INFO L78 Accepts]: Start accepts. Automaton has 42854 states and 49532 transitions. Word has length 303 [2024-11-13 14:43:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:43:13,747 INFO L471 AbstractCegarLoop]: Abstraction has 42854 states and 49532 transitions. [2024-11-13 14:43:13,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:13,747 INFO L276 IsEmpty]: Start isEmpty. Operand 42854 states and 49532 transitions. [2024-11-13 14:43:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-13 14:43:13,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:43:13,784 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 14:43:13,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:43:13,785 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:43:13,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:43:13,785 INFO L85 PathProgramCache]: Analyzing trace with hash 758958087, now seen corresponding path program 1 times [2024-11-13 14:43:13,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:43:13,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406673763] [2024-11-13 14:43:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:13,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:43:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 134 proven. 6 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-13 14:43:14,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:43:14,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406673763] [2024-11-13 14:43:14,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406673763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:43:14,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472708925] [2024-11-13 14:43:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:14,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:43:14,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:43:14,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:43:14,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:43:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:14,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:43:14,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:43:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-13 14:43:14,816 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:43:14,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472708925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:43:14,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:43:14,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:43:14,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571778107] [2024-11-13 14:43:14,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:43:14,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:43:14,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:43:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:43:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:43:14,822 INFO L87 Difference]: Start difference. First operand 42854 states and 49532 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:43:15,479 INFO L93 Difference]: Finished difference Result 119519 states and 138364 transitions. [2024-11-13 14:43:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:43:15,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2024-11-13 14:43:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:43:15,572 INFO L225 Difference]: With dead ends: 119519 [2024-11-13 14:43:15,572 INFO L226 Difference]: Without dead ends: 77682 [2024-11-13 14:43:15,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:43:15,610 INFO L432 NwaCegarLoop]: 622 mSDtfsCounter, 303 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:43:15,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 892 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:43:15,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77682 states. [2024-11-13 14:43:16,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77682 to 74838. [2024-11-13 14:43:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74838 states, 74837 states have (on average 1.143164477464356) internal successors, (85551), 74837 states have internal predecessors, (85551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74838 states to 74838 states and 85551 transitions. [2024-11-13 14:43:16,909 INFO L78 Accepts]: Start accepts. Automaton has 74838 states and 85551 transitions. Word has length 306 [2024-11-13 14:43:16,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:43:16,909 INFO L471 AbstractCegarLoop]: Abstraction has 74838 states and 85551 transitions. [2024-11-13 14:43:16,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:16,910 INFO L276 IsEmpty]: Start isEmpty. Operand 74838 states and 85551 transitions. [2024-11-13 14:43:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-13 14:43:16,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:43:16,973 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:43:16,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:43:17,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 14:43:17,174 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:43:17,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:43:17,174 INFO L85 PathProgramCache]: Analyzing trace with hash 795637041, now seen corresponding path program 1 times [2024-11-13 14:43:17,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:43:17,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948563297] [2024-11-13 14:43:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:17,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:43:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 81 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-13 14:43:17,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:43:17,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948563297] [2024-11-13 14:43:17,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948563297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:43:17,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649836339] [2024-11-13 14:43:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:17,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:43:17,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:43:17,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:43:17,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:43:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:18,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:43:18,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:43:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 14:43:18,180 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:43:18,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649836339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:43:18,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:43:18,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:43:18,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783517601] [2024-11-13 14:43:18,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:43:18,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:43:18,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:43:18,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:43:18,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:43:18,183 INFO L87 Difference]: Start difference. First operand 74838 states and 85551 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) 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) [2024-11-13 14:43:19,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:43:19,618 INFO L93 Difference]: Finished difference Result 148663 states and 170023 transitions. [2024-11-13 14:43:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:43:19,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) 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 309 [2024-11-13 14:43:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:43:19,712 INFO L225 Difference]: With dead ends: 148663 [2024-11-13 14:43:19,713 INFO L226 Difference]: Without dead ends: 74842 [2024-11-13 14:43:19,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:43:19,756 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 262 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:43:19,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 342 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:43:19,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74842 states. [2024-11-13 14:43:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74842 to 73619. [2024-11-13 14:43:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73619 states, 73618 states have (on average 1.1309054850715858) internal successors, (83255), 73618 states have internal predecessors, (83255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73619 states to 73619 states and 83255 transitions. [2024-11-13 14:43:20,870 INFO L78 Accepts]: Start accepts. Automaton has 73619 states and 83255 transitions. Word has length 309 [2024-11-13 14:43:20,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:43:20,871 INFO L471 AbstractCegarLoop]: Abstraction has 73619 states and 83255 transitions. [2024-11-13 14:43:20,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) 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) [2024-11-13 14:43:20,871 INFO L276 IsEmpty]: Start isEmpty. Operand 73619 states and 83255 transitions. [2024-11-13 14:43:20,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-13 14:43:20,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:43:20,939 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:43:21,168 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2024-11-13 14:43:21,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:43:21,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 14:43:21,169 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:43:21,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:43:21,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1342988284, now seen corresponding path program 1 times [2024-11-13 14:43:21,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:43:21,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197752350] [2024-11-13 14:43:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:21,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:43:21,172 WARN L724 oredProcess$PipePump]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] The stream was forcibly closed: stdIn [2024-11-13 14:43:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 141 proven. 6 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-13 14:43:21,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:43:21,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197752350] [2024-11-13 14:43:21,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197752350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:43:21,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913639356] [2024-11-13 14:43:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:21,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:43:21,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:43:21,874 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:43:21,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:43:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:22,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:43:22,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:43:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 14:43:22,198 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:43:22,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913639356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:43:22,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:43:22,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:43:22,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800640841] [2024-11-13 14:43:22,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:43:22,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:43:22,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:43:22,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:43:22,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:43:22,201 INFO L87 Difference]: Start difference. First operand 73619 states and 83255 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:43:23,302 INFO L93 Difference]: Finished difference Result 208959 states and 236435 transitions. [2024-11-13 14:43:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:43:23,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 314 [2024-11-13 14:43:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:43:23,433 INFO L225 Difference]: With dead ends: 208959 [2024-11-13 14:43:23,433 INFO L226 Difference]: Without dead ends: 131072 [2024-11-13 14:43:23,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:43:23,471 INFO L432 NwaCegarLoop]: 627 mSDtfsCounter, 308 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:43:23,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 896 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:43:23,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131072 states. [2024-11-13 14:43:24,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131072 to 128025. [2024-11-13 14:43:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128025 states, 128024 states have (on average 1.1120102480784853) internal successors, (142364), 128024 states have internal predecessors, (142364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128025 states to 128025 states and 142364 transitions. [2024-11-13 14:43:25,369 INFO L78 Accepts]: Start accepts. Automaton has 128025 states and 142364 transitions. Word has length 314 [2024-11-13 14:43:25,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:43:25,370 INFO L471 AbstractCegarLoop]: Abstraction has 128025 states and 142364 transitions. [2024-11-13 14:43:25,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:25,370 INFO L276 IsEmpty]: Start isEmpty. Operand 128025 states and 142364 transitions. [2024-11-13 14:43:25,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-13 14:43:25,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:43:25,463 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:43:25,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:43:25,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 14:43:25,664 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:43:25,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:43:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1967278358, now seen corresponding path program 1 times [2024-11-13 14:43:25,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:43:25,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913655358] [2024-11-13 14:43:25,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:25,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:43:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 152 proven. 6 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-13 14:43:26,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:43:26,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913655358] [2024-11-13 14:43:26,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913655358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:43:26,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234276094] [2024-11-13 14:43:26,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:26,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:43:26,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:43:26,382 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:43:26,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:43:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:26,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:43:26,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:43:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-13 14:43:26,761 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:43:26,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234276094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:43:26,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:43:26,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:43:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855021750] [2024-11-13 14:43:26,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:43:26,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:43:26,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:43:26,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:43:26,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:43:26,763 INFO L87 Difference]: Start difference. First operand 128025 states and 142364 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:28,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:43:28,850 INFO L93 Difference]: Finished difference Result 279259 states and 311259 transitions. [2024-11-13 14:43:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:43:28,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2024-11-13 14:43:28,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:43:29,049 INFO L225 Difference]: With dead ends: 279259 [2024-11-13 14:43:29,050 INFO L226 Difference]: Without dead ends: 152251 [2024-11-13 14:43:29,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:43:29,123 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 206 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:43:29,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 186 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:43:29,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152251 states. [2024-11-13 14:43:30,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152251 to 149803. [2024-11-13 14:43:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149803 states, 149802 states have (on average 1.1046581487563585) internal successors, (165480), 149802 states have internal predecessors, (165480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:31,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149803 states to 149803 states and 165480 transitions. [2024-11-13 14:43:31,430 INFO L78 Accepts]: Start accepts. Automaton has 149803 states and 165480 transitions. Word has length 320 [2024-11-13 14:43:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:43:31,431 INFO L471 AbstractCegarLoop]: Abstraction has 149803 states and 165480 transitions. [2024-11-13 14:43:31,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:31,431 INFO L276 IsEmpty]: Start isEmpty. Operand 149803 states and 165480 transitions. [2024-11-13 14:43:31,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-13 14:43:31,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:43:31,550 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:43:31,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:43:31,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 14:43:31,751 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:43:31,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:43:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1874271283, now seen corresponding path program 1 times [2024-11-13 14:43:31,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:43:31,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694099348] [2024-11-13 14:43:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:31,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:43:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 93 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-13 14:43:32,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:43:32,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694099348] [2024-11-13 14:43:32,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694099348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:43:32,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347826515] [2024-11-13 14:43:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:32,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:43:32,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:43:32,251 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:43:32,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:43:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:32,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:43:32,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:43:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-13 14:43:32,927 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:43:32,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347826515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:43:32,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:43:32,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:43:32,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140371928] [2024-11-13 14:43:32,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:43:32,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:43:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:43:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:43:32,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:43:32,930 INFO L87 Difference]: Start difference. First operand 149803 states and 165480 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:36,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:43:36,377 INFO L93 Difference]: Finished difference Result 495762 states and 547252 transitions. [2024-11-13 14:43:36,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:43:36,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 321 [2024-11-13 14:43:36,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:43:36,835 INFO L225 Difference]: With dead ends: 495762 [2024-11-13 14:43:36,835 INFO L226 Difference]: Without dead ends: 347179 [2024-11-13 14:43:36,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:43:36,910 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 765 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:43:36,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 439 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:43:37,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347179 states. [2024-11-13 14:43:41,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347179 to 331930. [2024-11-13 14:43:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331930 states, 331929 states have (on average 1.1004491924477826) internal successors, (365271), 331929 states have internal predecessors, (365271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331930 states to 331930 states and 365271 transitions. [2024-11-13 14:43:43,332 INFO L78 Accepts]: Start accepts. Automaton has 331930 states and 365271 transitions. Word has length 321 [2024-11-13 14:43:43,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:43:43,333 INFO L471 AbstractCegarLoop]: Abstraction has 331930 states and 365271 transitions. [2024-11-13 14:43:43,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:43,333 INFO L276 IsEmpty]: Start isEmpty. Operand 331930 states and 365271 transitions. [2024-11-13 14:43:43,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-13 14:43:43,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:43:43,499 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:43:43,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:43:43,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 14:43:43,699 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:43:43,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:43:43,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1300253082, now seen corresponding path program 1 times [2024-11-13 14:43:43,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:43:43,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143862715] [2024-11-13 14:43:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:43,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:43:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 146 proven. 6 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-13 14:43:44,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:43:44,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143862715] [2024-11-13 14:43:44,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143862715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:43:44,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969634158] [2024-11-13 14:43:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:43:44,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:43:44,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:43:44,213 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:43:44,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38538253-e002-4460-a4ff-55b0771f1c98/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:43:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:43:44,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:43:44,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:43:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 146 proven. 52 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-13 14:43:45,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:43:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 146 proven. 52 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-13 14:43:45,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969634158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:43:45,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:43:45,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2024-11-13 14:43:45,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636227621] [2024-11-13 14:43:45,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:43:45,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:43:45,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:43:45,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:43:45,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:43:45,726 INFO L87 Difference]: Start difference. First operand 331930 states and 365271 transitions. Second operand has 6 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:43:56,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:43:56,420 INFO L93 Difference]: Finished difference Result 1084152 states and 1195385 transitions. [2024-11-13 14:43:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:43:56,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 0 states have call successors, (0), 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 322 [2024-11-13 14:43:56,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:43:57,430 INFO L225 Difference]: With dead ends: 1084152 [2024-11-13 14:43:57,430 INFO L226 Difference]: Without dead ends: 749788 [2024-11-13 14:43:57,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:43:57,625 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 2500 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 4911 mSolverCounterSat, 765 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 5676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 765 IncrementalHoareTripleChecker+Valid, 4911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:43:57,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 668 Invalid, 5676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [765 Valid, 4911 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-13 14:43:58,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749788 states.