./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label57.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label57.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0de0fd0b8cb0cee609d45117c8166ea2b32bbf1ee23893cc14af47ce8649a66b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 15:21:07,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 15:21:07,674 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 15:21:07,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 15:21:07,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 15:21:07,723 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 15:21:07,723 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 15:21:07,723 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 15:21:07,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 15:21:07,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 15:21:07,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 15:21:07,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 15:21:07,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 15:21:07,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 15:21:07,729 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 15:21:07,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 15:21:07,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 15:21:07,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 15:21:07,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 15:21:07,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 15:21:07,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 15:21:07,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 15:21:07,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 15:21:07,734 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 15:21:07,734 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 15:21:07,734 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 15:21:07,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 15:21:07,735 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 15:21:07,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 15:21:07,735 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 15:21:07,735 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 15:21:07,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 15:21:07,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:21:07,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 15:21:07,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 15:21:07,736 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 15:21:07,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 15:21:07,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 15:21:07,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 15:21:07,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 15:21:07,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 15:21:07,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 15:21:07,741 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0de0fd0b8cb0cee609d45117c8166ea2b32bbf1ee23893cc14af47ce8649a66b [2024-10-12 15:21:08,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 15:21:08,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 15:21:08,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 15:21:08,144 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 15:21:08,144 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 15:21:08,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label57.c [2024-10-12 15:21:09,942 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 15:21:10,206 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 15:21:10,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label57.c [2024-10-12 15:21:10,226 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bda68aae/f25f75e13916446b8ef51d040e209034/FLAG4b1ecba76 [2024-10-12 15:21:10,240 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bda68aae/f25f75e13916446b8ef51d040e209034 [2024-10-12 15:21:10,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 15:21:10,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 15:21:10,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 15:21:10,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 15:21:10,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 15:21:10,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:10,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439877b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10, skipping insertion in model container [2024-10-12 15:21:10,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:10,332 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 15:21:10,702 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label57.c[55951,55964] [2024-10-12 15:21:10,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:21:10,758 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 15:21:10,882 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label57.c[55951,55964] [2024-10-12 15:21:10,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:21:10,910 INFO L204 MainTranslator]: Completed translation [2024-10-12 15:21:10,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10 WrapperNode [2024-10-12 15:21:10,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 15:21:10,911 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 15:21:10,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 15:21:10,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 15:21:10,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:10,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:11,013 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-12 15:21:11,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 15:21:11,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 15:21:11,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 15:21:11,014 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 15:21:11,023 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:11,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:11,030 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:11,059 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]. [2024-10-12 15:21:11,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:11,063 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:11,097 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:11,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:11,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:11,125 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:11,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 15:21:11,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 15:21:11,133 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 15:21:11,133 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 15:21:11,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (1/1) ... [2024-10-12 15:21:11,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:21:11,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:21:11,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 15:21:11,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 15:21:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 15:21:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 15:21:11,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 15:21:11,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 15:21:11,276 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 15:21:11,278 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 15:21:12,630 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-12 15:21:12,631 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 15:21:12,679 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 15:21:12,681 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 15:21:12,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:21:12 BoogieIcfgContainer [2024-10-12 15:21:12,681 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 15:21:12,683 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 15:21:12,683 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 15:21:12,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 15:21:12,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:21:10" (1/3) ... [2024-10-12 15:21:12,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d986ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:21:12, skipping insertion in model container [2024-10-12 15:21:12,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:21:10" (2/3) ... [2024-10-12 15:21:12,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d986ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:21:12, skipping insertion in model container [2024-10-12 15:21:12,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:21:12" (3/3) ... [2024-10-12 15:21:12,689 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label57.c [2024-10-12 15:21:12,703 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 15:21:12,703 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 15:21:12,756 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 15:21:12,763 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;@7ee9ece5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 15:21:12,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 15:21:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-10-12 15:21:12,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:12,778 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] [2024-10-12 15:21:12,779 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:12,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:12,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1873472628, now seen corresponding path program 1 times [2024-10-12 15:21:12,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:12,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349734980] [2024-10-12 15:21:12,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:12,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:21:13,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:13,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349734980] [2024-10-12 15:21:13,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349734980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:13,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:21:13,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:21:13,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551734358] [2024-10-12 15:21:13,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:13,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 15:21:13,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:13,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 15:21:13,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:21:13,259 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:13,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:13,295 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-12 15:21:13,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 15:21:13,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2024-10-12 15:21:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:13,306 INFO L225 Difference]: With dead ends: 479 [2024-10-12 15:21:13,306 INFO L226 Difference]: Without dead ends: 238 [2024-10-12 15:21:13,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:21:13,312 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:13,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:21:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-12 15:21:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-12 15:21:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-12 15:21:13,350 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 160 [2024-10-12 15:21:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:13,351 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-12 15:21:13,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-12 15:21:13,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-10-12 15:21:13,353 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:13,354 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] [2024-10-12 15:21:13,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 15:21:13,354 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:13,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:13,355 INFO L85 PathProgramCache]: Analyzing trace with hash 496967965, now seen corresponding path program 1 times [2024-10-12 15:21:13,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:13,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403101192] [2024-10-12 15:21:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:13,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:21:13,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:13,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403101192] [2024-10-12 15:21:13,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403101192] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:13,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:21:13,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:21:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563426093] [2024-10-12 15:21:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:13,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:13,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:13,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:13,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:21:13,773 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:14,573 INFO L93 Difference]: Finished difference Result 692 states and 1147 transitions. [2024-10-12 15:21:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:14,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2024-10-12 15:21:14,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:14,580 INFO L225 Difference]: With dead ends: 692 [2024-10-12 15:21:14,580 INFO L226 Difference]: Without dead ends: 455 [2024-10-12 15:21:14,581 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 [2024-10-12 15:21:14,582 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 95 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:14,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 122 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:21:14,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-10-12 15:21:14,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 450. [2024-10-12 15:21:14,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.5634743875278396) internal successors, (702), 449 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:14,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 702 transitions. [2024-10-12 15:21:14,612 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 702 transitions. Word has length 160 [2024-10-12 15:21:14,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:14,613 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 702 transitions. [2024-10-12 15:21:14,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:14,613 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 702 transitions. [2024-10-12 15:21:14,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-12 15:21:14,616 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:14,616 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:21:14,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 15:21:14,616 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:14,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:14,617 INFO L85 PathProgramCache]: Analyzing trace with hash 325128143, now seen corresponding path program 1 times [2024-10-12 15:21:14,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:14,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184457511] [2024-10-12 15:21:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:14,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:21:14,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:14,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184457511] [2024-10-12 15:21:14,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184457511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:14,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:21:14,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:21:14,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312659984] [2024-10-12 15:21:14,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:14,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:14,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:14,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:14,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:21:14,873 INFO L87 Difference]: Start difference. First operand 450 states and 702 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:15,652 INFO L93 Difference]: Finished difference Result 1339 states and 2093 transitions. [2024-10-12 15:21:15,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:15,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2024-10-12 15:21:15,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:15,655 INFO L225 Difference]: With dead ends: 1339 [2024-10-12 15:21:15,655 INFO L226 Difference]: Without dead ends: 890 [2024-10-12 15:21:15,656 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 [2024-10-12 15:21:15,657 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:15,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 152 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:21:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2024-10-12 15:21:15,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 886. [2024-10-12 15:21:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 1.5480225988700564) internal successors, (1370), 885 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:15,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1370 transitions. [2024-10-12 15:21:15,680 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1370 transitions. Word has length 166 [2024-10-12 15:21:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:15,680 INFO L471 AbstractCegarLoop]: Abstraction has 886 states and 1370 transitions. [2024-10-12 15:21:15,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:15,681 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1370 transitions. [2024-10-12 15:21:15,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-12 15:21:15,684 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:15,684 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 15:21:15,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 15:21:15,684 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:15,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:15,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1312781315, now seen corresponding path program 1 times [2024-10-12 15:21:15,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:15,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321100345] [2024-10-12 15:21:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:15,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:21:15,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321100345] [2024-10-12 15:21:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321100345] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:15,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:21:15,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:21:15,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464667719] [2024-10-12 15:21:15,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:15,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:21:15,971 INFO L87 Difference]: Start difference. First operand 886 states and 1370 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:16,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:16,632 INFO L93 Difference]: Finished difference Result 2611 states and 4041 transitions. [2024-10-12 15:21:16,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:16,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2024-10-12 15:21:16,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:16,638 INFO L225 Difference]: With dead ends: 2611 [2024-10-12 15:21:16,638 INFO L226 Difference]: Without dead ends: 1726 [2024-10-12 15:21:16,639 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 [2024-10-12 15:21:16,640 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 234 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:16,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 112 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:21:16,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2024-10-12 15:21:16,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1724. [2024-10-12 15:21:16,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 1.4718514219384793) internal successors, (2536), 1723 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2536 transitions. [2024-10-12 15:21:16,665 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2536 transitions. Word has length 170 [2024-10-12 15:21:16,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:16,666 INFO L471 AbstractCegarLoop]: Abstraction has 1724 states and 2536 transitions. [2024-10-12 15:21:16,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:16,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2536 transitions. [2024-10-12 15:21:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-12 15:21:16,668 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:16,668 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 15:21:16,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 15:21:16,669 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:16,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:16,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1211130432, now seen corresponding path program 1 times [2024-10-12 15:21:16,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:16,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294090045] [2024-10-12 15:21:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:16,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:21:16,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:16,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294090045] [2024-10-12 15:21:16,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294090045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:16,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:21:16,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:21:16,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005895050] [2024-10-12 15:21:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:16,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:16,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:16,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:21:16,894 INFO L87 Difference]: Start difference. First operand 1724 states and 2536 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:18,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:18,307 INFO L93 Difference]: Finished difference Result 5090 states and 7489 transitions. [2024-10-12 15:21:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:18,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2024-10-12 15:21:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:18,317 INFO L225 Difference]: With dead ends: 5090 [2024-10-12 15:21:18,317 INFO L226 Difference]: Without dead ends: 3367 [2024-10-12 15:21:18,319 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 [2024-10-12 15:21:18,320 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 251 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:18,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 153 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 15:21:18,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2024-10-12 15:21:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3365. [2024-10-12 15:21:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 3364 states have (on average 1.4057669441141498) internal successors, (4729), 3364 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:18,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4729 transitions. [2024-10-12 15:21:18,371 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4729 transitions. Word has length 173 [2024-10-12 15:21:18,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:18,371 INFO L471 AbstractCegarLoop]: Abstraction has 3365 states and 4729 transitions. [2024-10-12 15:21:18,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:18,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4729 transitions. [2024-10-12 15:21:18,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-10-12 15:21:18,376 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:18,376 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:21:18,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 15:21:18,376 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:18,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:18,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1129349812, now seen corresponding path program 1 times [2024-10-12 15:21:18,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:18,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985199664] [2024-10-12 15:21:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:18,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:21:18,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:18,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985199664] [2024-10-12 15:21:18,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985199664] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:18,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:21:18,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:21:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164909747] [2024-10-12 15:21:18,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:18,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:21:18,727 INFO L87 Difference]: Start difference. First operand 3365 states and 4729 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:19,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:19,456 INFO L93 Difference]: Finished difference Result 8985 states and 12605 transitions. [2024-10-12 15:21:19,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:19,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2024-10-12 15:21:19,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:19,475 INFO L225 Difference]: With dead ends: 8985 [2024-10-12 15:21:19,476 INFO L226 Difference]: Without dead ends: 5621 [2024-10-12 15:21:19,481 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 [2024-10-12 15:21:19,483 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 208 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:19,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 153 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:21:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5621 states. [2024-10-12 15:21:19,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5621 to 5598. [2024-10-12 15:21:19,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5598 states, 5597 states have (on average 1.3548329462211899) internal successors, (7583), 5597 states have internal predecessors, (7583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 7583 transitions. [2024-10-12 15:21:19,588 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 7583 transitions. Word has length 179 [2024-10-12 15:21:19,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:19,588 INFO L471 AbstractCegarLoop]: Abstraction has 5598 states and 7583 transitions. [2024-10-12 15:21:19,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 7583 transitions. [2024-10-12 15:21:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-12 15:21:19,594 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:19,594 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:21:19,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 15:21:19,594 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:19,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:19,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1036824884, now seen corresponding path program 1 times [2024-10-12 15:21:19,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:19,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667295773] [2024-10-12 15:21:19,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:19,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:21:19,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:19,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667295773] [2024-10-12 15:21:19,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667295773] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:21:19,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078684979] [2024-10-12 15:21:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:19,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:21:19,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:21:19,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:21:19,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 15:21:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:19,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:21:19,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:21:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:21:20,035 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:21:20,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078684979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:20,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:21:20,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-12 15:21:20,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011387241] [2024-10-12 15:21:20,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:20,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:20,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:20,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:20,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:21:20,037 INFO L87 Difference]: Start difference. First operand 5598 states and 7583 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:20,738 INFO L93 Difference]: Finished difference Result 16089 states and 21906 transitions. [2024-10-12 15:21:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:20,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 180 [2024-10-12 15:21:20,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:20,762 INFO L225 Difference]: With dead ends: 16089 [2024-10-12 15:21:20,762 INFO L226 Difference]: Without dead ends: 10695 [2024-10-12 15:21:20,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:21:20,769 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 241 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:20,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 165 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:21:20,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10695 states. [2024-10-12 15:21:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10695 to 10689. [2024-10-12 15:21:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10689 states, 10688 states have (on average 1.3091317365269461) internal successors, (13992), 10688 states have internal predecessors, (13992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:20,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10689 states to 10689 states and 13992 transitions. [2024-10-12 15:21:20,911 INFO L78 Accepts]: Start accepts. Automaton has 10689 states and 13992 transitions. Word has length 180 [2024-10-12 15:21:20,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:20,911 INFO L471 AbstractCegarLoop]: Abstraction has 10689 states and 13992 transitions. [2024-10-12 15:21:20,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:20,912 INFO L276 IsEmpty]: Start isEmpty. Operand 10689 states and 13992 transitions. [2024-10-12 15:21:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-12 15:21:20,921 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:20,921 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2024-10-12 15:21:20,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 15:21:21,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:21:21,126 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:21,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash -881424489, now seen corresponding path program 1 times [2024-10-12 15:21:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:21,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898306875] [2024-10-12 15:21:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:21,467 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:21:21,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:21,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898306875] [2024-10-12 15:21:21,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898306875] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:21:21,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012950297] [2024-10-12 15:21:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:21,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:21:21,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:21:21,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:21:21,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 15:21:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:21,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:21:21,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:21:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:21:21,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:21:21,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012950297] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:21,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:21:21,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-12 15:21:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780266291] [2024-10-12 15:21:21,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:21,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:21,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:21,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:21,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:21:21,649 INFO L87 Difference]: Start difference. First operand 10689 states and 13992 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:22,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:22,477 INFO L93 Difference]: Finished difference Result 29501 states and 38796 transitions. [2024-10-12 15:21:22,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:22,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 184 [2024-10-12 15:21:22,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:22,532 INFO L225 Difference]: With dead ends: 29501 [2024-10-12 15:21:22,533 INFO L226 Difference]: Without dead ends: 19016 [2024-10-12 15:21:22,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:21:22,550 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 229 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:22,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 411 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:21:22,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19016 states. [2024-10-12 15:21:22,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19016 to 19012. [2024-10-12 15:21:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19012 states, 19011 states have (on average 1.196307400978381) internal successors, (22743), 19011 states have internal predecessors, (22743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:22,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19012 states to 19012 states and 22743 transitions. [2024-10-12 15:21:22,884 INFO L78 Accepts]: Start accepts. Automaton has 19012 states and 22743 transitions. Word has length 184 [2024-10-12 15:21:22,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:22,884 INFO L471 AbstractCegarLoop]: Abstraction has 19012 states and 22743 transitions. [2024-10-12 15:21:22,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:22,885 INFO L276 IsEmpty]: Start isEmpty. Operand 19012 states and 22743 transitions. [2024-10-12 15:21:22,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-10-12 15:21:22,906 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:22,907 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-10-12 15:21:22,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 15:21:23,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-12 15:21:23,108 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:23,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:23,109 INFO L85 PathProgramCache]: Analyzing trace with hash -843355525, now seen corresponding path program 1 times [2024-10-12 15:21:23,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:23,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157283834] [2024-10-12 15:21:23,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:23,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:21:23,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:23,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157283834] [2024-10-12 15:21:23,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157283834] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:21:23,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162878367] [2024-10-12 15:21:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:23,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:21:23,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:21:23,515 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:21:23,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 15:21:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:23,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:21:23,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:21:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:21:23,682 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:21:23,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162878367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:23,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:21:23,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-12 15:21:23,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776641050] [2024-10-12 15:21:23,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:23,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:23,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:21:23,684 INFO L87 Difference]: Start difference. First operand 19012 states and 22743 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:24,376 INFO L93 Difference]: Finished difference Result 43711 states and 53281 transitions. [2024-10-12 15:21:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:24,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 186 [2024-10-12 15:21:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:24,513 INFO L225 Difference]: With dead ends: 43711 [2024-10-12 15:21:24,513 INFO L226 Difference]: Without dead ends: 24903 [2024-10-12 15:21:24,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:21:24,529 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 222 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:24,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 169 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:21:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24903 states. [2024-10-12 15:21:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24903 to 24899. [2024-10-12 15:21:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24899 states, 24898 states have (on average 1.1796931480440196) internal successors, (29372), 24898 states have internal predecessors, (29372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24899 states to 24899 states and 29372 transitions. [2024-10-12 15:21:24,862 INFO L78 Accepts]: Start accepts. Automaton has 24899 states and 29372 transitions. Word has length 186 [2024-10-12 15:21:24,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:24,862 INFO L471 AbstractCegarLoop]: Abstraction has 24899 states and 29372 transitions. [2024-10-12 15:21:24,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:24,863 INFO L276 IsEmpty]: Start isEmpty. Operand 24899 states and 29372 transitions. [2024-10-12 15:21:24,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-10-12 15:21:24,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:24,887 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:21:24,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 15:21:25,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:21:25,088 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:25,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:25,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1274839989, now seen corresponding path program 1 times [2024-10-12 15:21:25,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:25,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49517176] [2024-10-12 15:21:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:25,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 61 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-12 15:21:25,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:25,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49517176] [2024-10-12 15:21:25,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49517176] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:21:25,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917594926] [2024-10-12 15:21:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:25,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:21:25,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:21:25,385 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:21:25,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 15:21:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:25,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:21:25,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:21:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-12 15:21:25,744 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:21:25,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917594926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:25,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:21:25,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:21:25,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781462683] [2024-10-12 15:21:25,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:25,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:25,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:25,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:25,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:21:25,746 INFO L87 Difference]: Start difference. First operand 24899 states and 29372 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:26,446 INFO L93 Difference]: Finished difference Result 65915 states and 78201 transitions. [2024-10-12 15:21:26,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:26,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 218 [2024-10-12 15:21:26,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:26,494 INFO L225 Difference]: With dead ends: 65915 [2024-10-12 15:21:26,495 INFO L226 Difference]: Without dead ends: 41220 [2024-10-12 15:21:26,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:21:26,522 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 109 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:26,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 179 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:21:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41220 states. [2024-10-12 15:21:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41220 to 41204. [2024-10-12 15:21:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41204 states, 41203 states have (on average 1.1719292284542389) internal successors, (48287), 41203 states have internal predecessors, (48287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:27,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41204 states to 41204 states and 48287 transitions. [2024-10-12 15:21:27,289 INFO L78 Accepts]: Start accepts. Automaton has 41204 states and 48287 transitions. Word has length 218 [2024-10-12 15:21:27,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:27,290 INFO L471 AbstractCegarLoop]: Abstraction has 41204 states and 48287 transitions. [2024-10-12 15:21:27,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 41204 states and 48287 transitions. [2024-10-12 15:21:27,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-10-12 15:21:27,317 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:27,317 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:21:27,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 15:21:27,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:21:27,519 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:27,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash 262393249, now seen corresponding path program 1 times [2024-10-12 15:21:27,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:27,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842063261] [2024-10-12 15:21:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:27,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:21:27,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:27,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842063261] [2024-10-12 15:21:27,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842063261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:27,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:21:27,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:21:27,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458978356] [2024-10-12 15:21:27,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:27,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:27,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:27,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:27,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:21:27,876 INFO L87 Difference]: Start difference. First operand 41204 states and 48287 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:28,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:28,522 INFO L93 Difference]: Finished difference Result 79299 states and 92670 transitions. [2024-10-12 15:21:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:28,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 221 [2024-10-12 15:21:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:28,576 INFO L225 Difference]: With dead ends: 79299 [2024-10-12 15:21:28,577 INFO L226 Difference]: Without dead ends: 38299 [2024-10-12 15:21:28,692 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 [2024-10-12 15:21:28,693 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 328 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:28,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 29 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:21:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38299 states. [2024-10-12 15:21:29,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38299 to 38299. [2024-10-12 15:21:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38299 states, 38298 states have (on average 1.1561700349887722) internal successors, (44279), 38298 states have internal predecessors, (44279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38299 states to 38299 states and 44279 transitions. [2024-10-12 15:21:29,226 INFO L78 Accepts]: Start accepts. Automaton has 38299 states and 44279 transitions. Word has length 221 [2024-10-12 15:21:29,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:29,226 INFO L471 AbstractCegarLoop]: Abstraction has 38299 states and 44279 transitions. [2024-10-12 15:21:29,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:29,226 INFO L276 IsEmpty]: Start isEmpty. Operand 38299 states and 44279 transitions. [2024-10-12 15:21:29,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-10-12 15:21:29,243 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:29,243 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:21:29,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 15:21:29,244 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:29,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:29,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1062934695, now seen corresponding path program 1 times [2024-10-12 15:21:29,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:29,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454843915] [2024-10-12 15:21:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:29,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 15:21:29,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:29,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454843915] [2024-10-12 15:21:29,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454843915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:29,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:21:29,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:21:29,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968655092] [2024-10-12 15:21:29,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:29,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:21:29,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:29,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:21:29,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:21:29,620 INFO L87 Difference]: Start difference. First operand 38299 states and 44279 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:30,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:30,778 INFO L93 Difference]: Finished difference Result 144179 states and 166941 transitions. [2024-10-12 15:21:30,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:21:30,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 227 [2024-10-12 15:21:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:30,902 INFO L225 Difference]: With dead ends: 144179 [2024-10-12 15:21:30,902 INFO L226 Difference]: Without dead ends: 106287 [2024-10-12 15:21:30,947 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 [2024-10-12 15:21:30,948 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 840 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:30,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 266 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:21:31,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106287 states. [2024-10-12 15:21:32,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106287 to 82229. [2024-10-12 15:21:32,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82229 states, 82228 states have (on average 1.1615994551734203) internal successors, (95516), 82228 states have internal predecessors, (95516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82229 states to 82229 states and 95516 transitions. [2024-10-12 15:21:32,304 INFO L78 Accepts]: Start accepts. Automaton has 82229 states and 95516 transitions. Word has length 227 [2024-10-12 15:21:32,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:32,305 INFO L471 AbstractCegarLoop]: Abstraction has 82229 states and 95516 transitions. [2024-10-12 15:21:32,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:32,305 INFO L276 IsEmpty]: Start isEmpty. Operand 82229 states and 95516 transitions. [2024-10-12 15:21:32,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-12 15:21:32,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:32,320 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 15:21:32,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 15:21:32,321 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:32,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:32,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1615709816, now seen corresponding path program 1 times [2024-10-12 15:21:32,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:32,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392801026] [2024-10-12 15:21:32,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:32,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-12 15:21:33,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392801026] [2024-10-12 15:21:33,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392801026] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:21:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954822978] [2024-10-12 15:21:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:33,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:21:33,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:21:33,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:21:33,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 15:21:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:33,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:21:33,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:21:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 15:21:33,528 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:21:33,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954822978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:33,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:21:33,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:21:33,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424206964] [2024-10-12 15:21:33,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:33,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:33,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:33,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:33,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:21:33,530 INFO L87 Difference]: Start difference. First operand 82229 states and 95516 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:34,563 INFO L93 Difference]: Finished difference Result 201902 states and 234792 transitions. [2024-10-12 15:21:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:34,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2024-10-12 15:21:34,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:34,736 INFO L225 Difference]: With dead ends: 201902 [2024-10-12 15:21:34,737 INFO L226 Difference]: Without dead ends: 119877 [2024-10-12 15:21:34,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:21:34,822 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 68 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:34,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 159 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:21:34,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119877 states. [2024-10-12 15:21:36,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119877 to 113730. [2024-10-12 15:21:36,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113730 states, 113729 states have (on average 1.163537883917031) internal successors, (132328), 113729 states have internal predecessors, (132328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:36,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113730 states to 113730 states and 132328 transitions. [2024-10-12 15:21:36,610 INFO L78 Accepts]: Start accepts. Automaton has 113730 states and 132328 transitions. Word has length 238 [2024-10-12 15:21:36,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:36,610 INFO L471 AbstractCegarLoop]: Abstraction has 113730 states and 132328 transitions. [2024-10-12 15:21:36,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 113730 states and 132328 transitions. [2024-10-12 15:21:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-10-12 15:21:36,629 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:36,630 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:21:36,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 15:21:36,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 15:21:36,834 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:36,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:36,834 INFO L85 PathProgramCache]: Analyzing trace with hash -81296972, now seen corresponding path program 1 times [2024-10-12 15:21:36,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:36,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134304090] [2024-10-12 15:21:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:36,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 15:21:37,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:37,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134304090] [2024-10-12 15:21:37,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134304090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:37,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:21:37,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:21:37,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178784592] [2024-10-12 15:21:37,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:37,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:37,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:21:37,317 INFO L87 Difference]: Start difference. First operand 113730 states and 132328 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:38,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:38,308 INFO L93 Difference]: Finished difference Result 213013 states and 247957 transitions. [2024-10-12 15:21:38,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:38,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 278 [2024-10-12 15:21:38,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:38,424 INFO L225 Difference]: With dead ends: 213013 [2024-10-12 15:21:38,425 INFO L226 Difference]: Without dead ends: 99487 [2024-10-12 15:21:38,820 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 [2024-10-12 15:21:38,821 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 243 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:38,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 327 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:21:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99487 states. [2024-10-12 15:21:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99487 to 99484. [2024-10-12 15:21:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99484 states, 99483 states have (on average 1.1245338399525546) internal successors, (111872), 99483 states have internal predecessors, (111872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99484 states to 99484 states and 111872 transitions. [2024-10-12 15:21:40,158 INFO L78 Accepts]: Start accepts. Automaton has 99484 states and 111872 transitions. Word has length 278 [2024-10-12 15:21:40,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:40,159 INFO L471 AbstractCegarLoop]: Abstraction has 99484 states and 111872 transitions. [2024-10-12 15:21:40,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:40,159 INFO L276 IsEmpty]: Start isEmpty. Operand 99484 states and 111872 transitions. [2024-10-12 15:21:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-10-12 15:21:40,189 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:40,189 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:21:40,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 15:21:40,190 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:40,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash -292738314, now seen corresponding path program 1 times [2024-10-12 15:21:40,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:40,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966219313] [2024-10-12 15:21:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:40,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 15:21:40,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:40,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966219313] [2024-10-12 15:21:40,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966219313] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:40,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:21:40,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:21:40,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277290527] [2024-10-12 15:21:40,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:40,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:40,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:21:40,393 INFO L87 Difference]: Start difference. First operand 99484 states and 111872 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:41,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:41,580 INFO L93 Difference]: Finished difference Result 191427 states and 215055 transitions. [2024-10-12 15:21:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:41,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 290 [2024-10-12 15:21:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:41,688 INFO L225 Difference]: With dead ends: 191427 [2024-10-12 15:21:41,689 INFO L226 Difference]: Without dead ends: 92147 [2024-10-12 15:21:41,754 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 [2024-10-12 15:21:41,754 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 222 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:41,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 320 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:21:41,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92147 states. [2024-10-12 15:21:42,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92147 to 80556. [2024-10-12 15:21:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80556 states, 80555 states have (on average 1.0991868909440754) internal successors, (88545), 80555 states have internal predecessors, (88545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80556 states to 80556 states and 88545 transitions. [2024-10-12 15:21:42,857 INFO L78 Accepts]: Start accepts. Automaton has 80556 states and 88545 transitions. Word has length 290 [2024-10-12 15:21:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:42,857 INFO L471 AbstractCegarLoop]: Abstraction has 80556 states and 88545 transitions. [2024-10-12 15:21:42,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:42,858 INFO L276 IsEmpty]: Start isEmpty. Operand 80556 states and 88545 transitions. [2024-10-12 15:21:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-10-12 15:21:42,874 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:42,874 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:21:42,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 15:21:42,875 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:42,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:42,875 INFO L85 PathProgramCache]: Analyzing trace with hash -512237235, now seen corresponding path program 1 times [2024-10-12 15:21:42,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:42,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257146863] [2024-10-12 15:21:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:42,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 191 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-12 15:21:44,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:44,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257146863] [2024-10-12 15:21:44,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257146863] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:21:44,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59752464] [2024-10-12 15:21:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:44,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:21:44,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:21:44,662 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:21:44,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 15:21:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:44,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:21:44,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:21:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-12 15:21:45,033 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:21:45,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59752464] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:45,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:21:45,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-12 15:21:45,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40819242] [2024-10-12 15:21:45,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:45,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:45,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:45,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:45,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:21:45,036 INFO L87 Difference]: Start difference. First operand 80556 states and 88545 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:45,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:45,566 INFO L93 Difference]: Finished difference Result 233127 states and 256471 transitions. [2024-10-12 15:21:45,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:45,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 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 342 [2024-10-12 15:21:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:45,736 INFO L225 Difference]: With dead ends: 233127 [2024-10-12 15:21:45,737 INFO L226 Difference]: Without dead ends: 152775 [2024-10-12 15:21:45,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:21:45,802 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 220 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:45,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 704 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:21:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152775 states. [2024-10-12 15:21:47,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152775 to 152771. [2024-10-12 15:21:47,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152771 states, 152770 states have (on average 1.1006022124762715) internal successors, (168139), 152770 states have internal predecessors, (168139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152771 states to 152771 states and 168139 transitions. [2024-10-12 15:21:47,959 INFO L78 Accepts]: Start accepts. Automaton has 152771 states and 168139 transitions. Word has length 342 [2024-10-12 15:21:47,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:47,959 INFO L471 AbstractCegarLoop]: Abstraction has 152771 states and 168139 transitions. [2024-10-12 15:21:47,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:47,960 INFO L276 IsEmpty]: Start isEmpty. Operand 152771 states and 168139 transitions. [2024-10-12 15:21:48,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-10-12 15:21:48,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:48,002 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:21:48,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 15:21:48,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 15:21:48,203 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:48,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:48,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1603195979, now seen corresponding path program 1 times [2024-10-12 15:21:48,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:48,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455723871] [2024-10-12 15:21:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:48,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-12 15:21:49,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:49,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455723871] [2024-10-12 15:21:49,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455723871] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:49,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:21:49,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 15:21:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052498696] [2024-10-12 15:21:49,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:49,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:21:49,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:49,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:21:49,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:21:49,012 INFO L87 Difference]: Start difference. First operand 152771 states and 168139 transitions. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:50,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:50,982 INFO L93 Difference]: Finished difference Result 331812 states and 365561 transitions. [2024-10-12 15:21:50,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:21:50,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 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 400 [2024-10-12 15:21:50,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:51,303 INFO L225 Difference]: With dead ends: 331812 [2024-10-12 15:21:51,303 INFO L226 Difference]: Without dead ends: 179245 [2024-10-12 15:21:51,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:21:51,454 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 400 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:51,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 99 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 15:21:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179245 states. [2024-10-12 15:21:53,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179245 to 161277. [2024-10-12 15:21:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161277 states, 161276 states have (on average 1.0945397951338078) internal successors, (176523), 161276 states have internal predecessors, (176523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161277 states to 161277 states and 176523 transitions. [2024-10-12 15:21:54,196 INFO L78 Accepts]: Start accepts. Automaton has 161277 states and 176523 transitions. Word has length 400 [2024-10-12 15:21:54,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:54,196 INFO L471 AbstractCegarLoop]: Abstraction has 161277 states and 176523 transitions. [2024-10-12 15:21:54,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 161277 states and 176523 transitions. [2024-10-12 15:21:54,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-10-12 15:21:54,233 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:54,233 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 15:21:54,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 15:21:54,234 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:54,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:54,234 INFO L85 PathProgramCache]: Analyzing trace with hash -996113501, now seen corresponding path program 1 times [2024-10-12 15:21:54,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:54,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253753169] [2024-10-12 15:21:54,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:54,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 240 proven. 6 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-10-12 15:21:55,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:21:55,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253753169] [2024-10-12 15:21:55,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253753169] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:21:55,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727113631] [2024-10-12 15:21:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:55,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:21:55,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:21:55,137 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:21:55,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 15:21:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:21:55,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:21:55,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:21:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-10-12 15:21:55,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:21:55,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727113631] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:21:55,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:21:55,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:21:55,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439023093] [2024-10-12 15:21:55,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:21:55,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:21:55,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:21:55,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:21:55,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:21:55,560 INFO L87 Difference]: Start difference. First operand 161277 states and 176523 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:56,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:21:56,924 INFO L93 Difference]: Finished difference Result 322364 states and 352844 transitions. [2024-10-12 15:21:56,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:21:56,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 406 [2024-10-12 15:21:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:21:57,122 INFO L225 Difference]: With dead ends: 322364 [2024-10-12 15:21:57,122 INFO L226 Difference]: Without dead ends: 161291 [2024-10-12 15:21:57,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:21:57,207 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 102 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:21:57,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 287 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:21:57,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161291 states. [2024-10-12 15:21:59,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161291 to 157217. [2024-10-12 15:21:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157217 states, 157216 states have (on average 1.089291166293507) internal successors, (171254), 157216 states have internal predecessors, (171254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:59,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157217 states to 157217 states and 171254 transitions. [2024-10-12 15:21:59,649 INFO L78 Accepts]: Start accepts. Automaton has 157217 states and 171254 transitions. Word has length 406 [2024-10-12 15:21:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:21:59,650 INFO L471 AbstractCegarLoop]: Abstraction has 157217 states and 171254 transitions. [2024-10-12 15:21:59,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:21:59,650 INFO L276 IsEmpty]: Start isEmpty. Operand 157217 states and 171254 transitions. [2024-10-12 15:21:59,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-10-12 15:21:59,686 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:21:59,687 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:21:59,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 15:21:59,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:21:59,888 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:21:59,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:21:59,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1803196228, now seen corresponding path program 1 times [2024-10-12 15:21:59,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:21:59,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294471988] [2024-10-12 15:21:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:21:59,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:21:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:22:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 210 proven. 6 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-10-12 15:22:00,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:22:00,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294471988] [2024-10-12 15:22:00,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294471988] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:22:00,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163266469] [2024-10-12 15:22:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:22:00,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:22:00,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:22:00,792 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:22:00,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 15:22:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:22:00,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:22:00,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:22:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2024-10-12 15:22:01,004 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:22:01,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163266469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:22:01,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:22:01,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:22:01,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872827447] [2024-10-12 15:22:01,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:22:01,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:22:01,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:22:01,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:22:01,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:22:01,006 INFO L87 Difference]: Start difference. First operand 157217 states and 171254 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:22:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:22:02,362 INFO L93 Difference]: Finished difference Result 278872 states and 302835 transitions. [2024-10-12 15:22:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:22:02,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 408 [2024-10-12 15:22:02,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:22:02,367 INFO L225 Difference]: With dead ends: 278872 [2024-10-12 15:22:02,367 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 15:22:02,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:22:02,433 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 215 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:22:02,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 336 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:22:02,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 15:22:02,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 15:22:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:22:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 15:22:02,437 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 408 [2024-10-12 15:22:02,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:22:02,437 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 15:22:02,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:22:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 15:22:02,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 15:22:02,439 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 15:22:02,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 15:22:02,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:22:02,646 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:22:02,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.