./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/Problem16_label00.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/Problem16_label00.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 75ebd1645cbbce4c9ca017600d59212353a954f83c001b1c580ae238d412adcc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:21:24,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:21:24,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:21:24,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:21:24,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:21:24,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:21:24,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:21:24,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:21:24,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:21:24,228 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:21:24,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:21:24,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:21:24,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:21:24,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:21:24,230 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:21:24,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:21:24,230 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:21:24,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:21:24,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:21:24,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:21:24,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:21:24,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:21:24,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:21:24,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:21:24,235 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:21:24,235 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:21:24,235 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:21:24,235 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:21:24,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:21:24,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:21:24,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:21:24,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:21:24,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:21:24,237 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:21:24,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:21:24,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:21:24,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:21:24,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:21:24,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:21:24,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:21:24,238 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:21:24,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:21:24,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75ebd1645cbbce4c9ca017600d59212353a954f83c001b1c580ae238d412adcc [2024-10-12 16:21:24,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:21:24,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:21:24,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:21:24,466 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:21:24,466 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:21:24,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label00.c [2024-10-12 16:21:25,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:21:25,947 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:21:25,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label00.c [2024-10-12 16:21:25,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdbecd781/fe77cd3c706e4b41a351f9c8176c6aec/FLAG93e0ec3b8 [2024-10-12 16:21:26,261 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdbecd781/fe77cd3c706e4b41a351f9c8176c6aec [2024-10-12 16:21:26,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:21:26,264 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:21:26,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:21:26,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:21:26,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:21:26,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:26,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dab9824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26, skipping insertion in model container [2024-10-12 16:21:26,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:26,322 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:21:26,474 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/Problem16_label00.c[2412,2425] [2024-10-12 16:21:26,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:21:26,742 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:21:26,756 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/Problem16_label00.c[2412,2425] [2024-10-12 16:21:26,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:21:26,877 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:21:26,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26 WrapperNode [2024-10-12 16:21:26,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:21:26,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:21:26,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:21:26,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:21:26,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:26,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:26,995 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-10-12 16:21:26,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:21:26,996 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:21:26,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:21:26,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:21:27,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:27,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:27,013 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:27,094 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 16:21:27,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:27,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:27,162 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:27,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:27,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:27,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:27,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:21:27,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:21:27,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:21:27,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:21:27,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (1/1) ... [2024-10-12 16:21:27,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:21:27,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:21:27,233 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 16:21:27,234 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 16:21:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:21:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:21:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:21:27,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:21:27,322 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:21:27,323 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:21:28,800 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-10-12 16:21:28,801 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:21:28,848 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:21:28,849 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:21:28,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:21:28 BoogieIcfgContainer [2024-10-12 16:21:28,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:21:28,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:21:28,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:21:28,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:21:28,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:21:26" (1/3) ... [2024-10-12 16:21:28,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a03df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:21:28, skipping insertion in model container [2024-10-12 16:21:28,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:26" (2/3) ... [2024-10-12 16:21:28,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a03df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:21:28, skipping insertion in model container [2024-10-12 16:21:28,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:21:28" (3/3) ... [2024-10-12 16:21:28,855 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label00.c [2024-10-12 16:21:28,867 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:21:28,867 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:21:28,919 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:21:28,925 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;@207f259f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:21:28,926 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:21:28,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 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 16:21:28,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-12 16:21:28,935 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:28,936 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] [2024-10-12 16:21:28,936 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:28,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1651388925, now seen corresponding path program 1 times [2024-10-12 16:21:28,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:28,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823706122] [2024-10-12 16:21:28,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:28,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:29,064 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 16:21:29,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:29,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823706122] [2024-10-12 16:21:29,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823706122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:29,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:29,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:21:29,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935465552] [2024-10-12 16:21:29,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:29,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:21:29,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:29,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:21:29,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:21:29,093 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 16:21:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:29,145 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2024-10-12 16:21:29,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:21:29,148 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-10-12 16:21:29,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:29,156 INFO L225 Difference]: With dead ends: 667 [2024-10-12 16:21:29,156 INFO L226 Difference]: Without dead ends: 332 [2024-10-12 16:21:29,159 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 16:21:29,161 INFO L432 NwaCegarLoop]: 596 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, 596 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 16:21:29,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:21:29,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-10-12 16:21:29,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2024-10-12 16:21:29,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 0 states have call successors, (0), 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 16:21:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2024-10-12 16:21:29,203 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 20 [2024-10-12 16:21:29,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:29,203 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2024-10-12 16:21:29,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 16:21:29,204 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2024-10-12 16:21:29,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-12 16:21:29,204 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:29,204 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] [2024-10-12 16:21:29,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:21:29,205 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:29,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:29,205 INFO L85 PathProgramCache]: Analyzing trace with hash 733574564, now seen corresponding path program 1 times [2024-10-12 16:21:29,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:29,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959088983] [2024-10-12 16:21:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:29,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:29,299 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 16:21:29,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:29,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959088983] [2024-10-12 16:21:29,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959088983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:29,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:29,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:21:29,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166660580] [2024-10-12 16:21:29,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:29,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:29,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:29,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:29,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:29,302 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 16:21:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:30,446 INFO L93 Difference]: Finished difference Result 992 states and 1785 transitions. [2024-10-12 16:21:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:30,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-10-12 16:21:30,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:30,449 INFO L225 Difference]: With dead ends: 992 [2024-10-12 16:21:30,449 INFO L226 Difference]: Without dead ends: 661 [2024-10-12 16:21:30,450 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 16:21:30,451 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 335 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:30,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 156 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:21:30,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-10-12 16:21:30,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2024-10-12 16:21:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.5833333333333333) internal successors, (1045), 660 states have internal predecessors, (1045), 0 states have call successors, (0), 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 16:21:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1045 transitions. [2024-10-12 16:21:30,472 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1045 transitions. Word has length 20 [2024-10-12 16:21:30,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:30,472 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 1045 transitions. [2024-10-12 16:21:30,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 16:21:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1045 transitions. [2024-10-12 16:21:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 16:21:30,476 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:30,477 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] [2024-10-12 16:21:30,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:21:30,477 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:30,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:30,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1721967544, now seen corresponding path program 1 times [2024-10-12 16:21:30,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:30,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924274408] [2024-10-12 16:21:30,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:30,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:30,685 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 16:21:30,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:30,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924274408] [2024-10-12 16:21:30,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924274408] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:30,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:30,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:21:30,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025262859] [2024-10-12 16:21:30,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:30,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:30,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:30,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:30,690 INFO L87 Difference]: Start difference. First operand 661 states and 1045 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 16:21:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:31,640 INFO L93 Difference]: Finished difference Result 1650 states and 2538 transitions. [2024-10-12 16:21:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:31,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-10-12 16:21:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:31,643 INFO L225 Difference]: With dead ends: 1650 [2024-10-12 16:21:31,643 INFO L226 Difference]: Without dead ends: 990 [2024-10-12 16:21:31,644 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 16:21:31,645 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 338 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:31,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 75 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:21:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-10-12 16:21:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 990. [2024-10-12 16:21:31,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 1.3771486349848332) internal successors, (1362), 989 states have internal predecessors, (1362), 0 states have call successors, (0), 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 16:21:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1362 transitions. [2024-10-12 16:21:31,680 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1362 transitions. Word has length 91 [2024-10-12 16:21:31,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:31,682 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1362 transitions. [2024-10-12 16:21:31,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 16:21:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1362 transitions. [2024-10-12 16:21:31,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 16:21:31,685 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:31,686 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] [2024-10-12 16:21:31,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:21:31,686 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:31,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:31,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1070669357, now seen corresponding path program 1 times [2024-10-12 16:21:31,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:31,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500883115] [2024-10-12 16:21:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:31,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:31,772 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 16:21:31,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:31,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500883115] [2024-10-12 16:21:31,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500883115] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:31,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:31,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:21:31,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586131260] [2024-10-12 16:21:31,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:31,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:31,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:31,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:31,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:31,775 INFO L87 Difference]: Start difference. First operand 990 states and 1362 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 16:21:32,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:32,838 INFO L93 Difference]: Finished difference Result 2966 states and 4083 transitions. [2024-10-12 16:21:32,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:32,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2024-10-12 16:21:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:32,847 INFO L225 Difference]: With dead ends: 2966 [2024-10-12 16:21:32,847 INFO L226 Difference]: Without dead ends: 1977 [2024-10-12 16:21:32,851 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 16:21:32,852 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 289 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:32,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 207 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:21:32,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2024-10-12 16:21:32,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1977. [2024-10-12 16:21:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1976 states have (on average 1.2469635627530364) internal successors, (2464), 1976 states have internal predecessors, (2464), 0 states have call successors, (0), 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 16:21:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2464 transitions. [2024-10-12 16:21:32,885 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2464 transitions. Word has length 92 [2024-10-12 16:21:32,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:32,885 INFO L471 AbstractCegarLoop]: Abstraction has 1977 states and 2464 transitions. [2024-10-12 16:21:32,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 16:21:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2464 transitions. [2024-10-12 16:21:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-12 16:21:32,887 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:32,887 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] [2024-10-12 16:21:32,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:21:32,887 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:32,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:32,888 INFO L85 PathProgramCache]: Analyzing trace with hash 388770528, now seen corresponding path program 1 times [2024-10-12 16:21:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:32,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888164019] [2024-10-12 16:21:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:32,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:33,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:33,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888164019] [2024-10-12 16:21:33,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888164019] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:21:33,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186636194] [2024-10-12 16:21:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:33,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:21:33,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:21:33,091 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 16:21:33,093 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 16:21:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:33,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:21:33,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:21:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:33,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:21:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:34,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186636194] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 16:21:34,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 16:21:34,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-12 16:21:34,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089154508] [2024-10-12 16:21:34,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 16:21:34,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 16:21:34,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:34,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 16:21:34,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:21:34,058 INFO L87 Difference]: Start difference. First operand 1977 states and 2464 transitions. Second operand has 6 states, 6 states have (on average 35.5) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:38,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:38,309 INFO L93 Difference]: Finished difference Result 11522 states and 14991 transitions. [2024-10-12 16:21:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 16:21:38,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-10-12 16:21:38,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:38,335 INFO L225 Difference]: With dead ends: 11522 [2024-10-12 16:21:38,336 INFO L226 Difference]: Without dead ends: 9546 [2024-10-12 16:21:38,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:21:38,341 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2047 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 4091 mSolverCounterSat, 1482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 5573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1482 IncrementalHoareTripleChecker+Valid, 4091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:38,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 39 Invalid, 5573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1482 Valid, 4091 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-10-12 16:21:38,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9546 states. [2024-10-12 16:21:38,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 6912. [2024-10-12 16:21:38,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6912 states, 6911 states have (on average 1.233540732166112) internal successors, (8525), 6911 states have internal predecessors, (8525), 0 states have call successors, (0), 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 16:21:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 8525 transitions. [2024-10-12 16:21:38,468 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 8525 transitions. Word has length 107 [2024-10-12 16:21:38,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:38,470 INFO L471 AbstractCegarLoop]: Abstraction has 6912 states and 8525 transitions. [2024-10-12 16:21:38,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:38,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 8525 transitions. [2024-10-12 16:21:38,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-10-12 16:21:38,476 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:38,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:38,490 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 16:21:38,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:21:38,681 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:38,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:38,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1783534039, now seen corresponding path program 1 times [2024-10-12 16:21:38,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:38,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454245780] [2024-10-12 16:21:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:38,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:39,149 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 16:21:39,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:39,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454245780] [2024-10-12 16:21:39,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454245780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:39,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:39,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:39,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876476691] [2024-10-12 16:21:39,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:39,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:21:39,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:21:39,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:21:39,153 INFO L87 Difference]: Start difference. First operand 6912 states and 8525 transitions. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:40,112 INFO L93 Difference]: Finished difference Result 14152 states and 17396 transitions. [2024-10-12 16:21:40,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:21:40,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 280 [2024-10-12 16:21:40,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:40,128 INFO L225 Difference]: With dead ends: 14152 [2024-10-12 16:21:40,128 INFO L226 Difference]: Without dead ends: 7241 [2024-10-12 16:21:40,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:21:40,137 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 232 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:40,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 318 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:21:40,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7241 states. [2024-10-12 16:21:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7241 to 7241. [2024-10-12 16:21:40,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7241 states, 7240 states have (on average 1.223756906077348) internal successors, (8860), 7240 states have internal predecessors, (8860), 0 states have call successors, (0), 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 16:21:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 8860 transitions. [2024-10-12 16:21:40,244 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 8860 transitions. Word has length 280 [2024-10-12 16:21:40,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:40,245 INFO L471 AbstractCegarLoop]: Abstraction has 7241 states and 8860 transitions. [2024-10-12 16:21:40,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 8860 transitions. [2024-10-12 16:21:40,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-10-12 16:21:40,248 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:40,249 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:40,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:21:40,249 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:40,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:40,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1822606234, now seen corresponding path program 1 times [2024-10-12 16:21:40,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:40,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722834920] [2024-10-12 16:21:40,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:40,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:40,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:40,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722834920] [2024-10-12 16:21:40,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722834920] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:40,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:40,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 16:21:40,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107421146] [2024-10-12 16:21:40,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:40,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 16:21:40,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 16:21:40,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:21:40,625 INFO L87 Difference]: Start difference. First operand 7241 states and 8860 transitions. Second operand has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 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 16:21:41,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:41,950 INFO L93 Difference]: Finished difference Result 14874 states and 18172 transitions. [2024-10-12 16:21:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 16:21:41,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 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 318 [2024-10-12 16:21:41,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:41,974 INFO L225 Difference]: With dead ends: 14874 [2024-10-12 16:21:41,977 INFO L226 Difference]: Without dead ends: 7630 [2024-10-12 16:21:41,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:21:41,985 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 292 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:41,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 300 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:21:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7630 states. [2024-10-12 16:21:42,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7630 to 7590. [2024-10-12 16:21:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7590 states, 7589 states have (on average 1.08789036763737) internal successors, (8256), 7589 states have internal predecessors, (8256), 0 states have call successors, (0), 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 16:21:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 8256 transitions. [2024-10-12 16:21:42,119 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 8256 transitions. Word has length 318 [2024-10-12 16:21:42,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:42,119 INFO L471 AbstractCegarLoop]: Abstraction has 7590 states and 8256 transitions. [2024-10-12 16:21:42,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 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 16:21:42,120 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 8256 transitions. [2024-10-12 16:21:42,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-10-12 16:21:42,126 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:42,127 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:21:42,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:21:42,128 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:42,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:42,129 INFO L85 PathProgramCache]: Analyzing trace with hash -772890075, now seen corresponding path program 1 times [2024-10-12 16:21:42,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:42,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847980565] [2024-10-12 16:21:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:42,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-10-12 16:21:42,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:42,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847980565] [2024-10-12 16:21:42,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847980565] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:42,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:42,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:42,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514251082] [2024-10-12 16:21:42,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:42,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:42,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:42,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:42,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:42,455 INFO L87 Difference]: Start difference. First operand 7590 states and 8256 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 16:21:43,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:43,203 INFO L93 Difference]: Finished difference Result 17482 states and 19184 transitions. [2024-10-12 16:21:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:43,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 487 [2024-10-12 16:21:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:43,216 INFO L225 Difference]: With dead ends: 17482 [2024-10-12 16:21:43,217 INFO L226 Difference]: Without dead ends: 10222 [2024-10-12 16:21:43,223 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 16:21:43,224 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 223 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:43,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 444 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:21:43,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10222 states. [2024-10-12 16:21:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10222 to 9893. [2024-10-12 16:21:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9893 states, 9892 states have (on average 1.0744035584310554) internal successors, (10628), 9892 states have internal predecessors, (10628), 0 states have call successors, (0), 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 16:21:43,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9893 states to 9893 states and 10628 transitions. [2024-10-12 16:21:43,318 INFO L78 Accepts]: Start accepts. Automaton has 9893 states and 10628 transitions. Word has length 487 [2024-10-12 16:21:43,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:43,319 INFO L471 AbstractCegarLoop]: Abstraction has 9893 states and 10628 transitions. [2024-10-12 16:21:43,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 16:21:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 9893 states and 10628 transitions. [2024-10-12 16:21:43,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-10-12 16:21:43,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:43,326 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 16:21:43,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:21:43,326 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:43,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:43,327 INFO L85 PathProgramCache]: Analyzing trace with hash -926509417, now seen corresponding path program 1 times [2024-10-12 16:21:43,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:43,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061227137] [2024-10-12 16:21:43,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:43,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 79 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:43,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061227137] [2024-10-12 16:21:43,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061227137] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:21:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064086002] [2024-10-12 16:21:43,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:43,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:21:43,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:21:44,000 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 16:21:44,004 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 16:21:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:44,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:21:44,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:21:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:44,753 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:21:44,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064086002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:44,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:21:44,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 16:21:44,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666199224] [2024-10-12 16:21:44,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:44,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:44,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:44,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:44,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:21:44,757 INFO L87 Difference]: Start difference. First operand 9893 states and 10628 transitions. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 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 16:21:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:45,529 INFO L93 Difference]: Finished difference Result 20792 states and 22425 transitions. [2024-10-12 16:21:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 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 515 [2024-10-12 16:21:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:45,545 INFO L225 Difference]: With dead ends: 20792 [2024-10-12 16:21:45,545 INFO L226 Difference]: Without dead ends: 11229 [2024-10-12 16:21:45,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:21:45,554 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:45,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 105 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:21:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11229 states. [2024-10-12 16:21:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11229 to 11209. [2024-10-12 16:21:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11209 states, 11208 states have (on average 1.0690578158458244) internal successors, (11982), 11208 states have internal predecessors, (11982), 0 states have call successors, (0), 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 16:21:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11209 states to 11209 states and 11982 transitions. [2024-10-12 16:21:45,656 INFO L78 Accepts]: Start accepts. Automaton has 11209 states and 11982 transitions. Word has length 515 [2024-10-12 16:21:45,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:45,656 INFO L471 AbstractCegarLoop]: Abstraction has 11209 states and 11982 transitions. [2024-10-12 16:21:45,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 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 16:21:45,657 INFO L276 IsEmpty]: Start isEmpty. Operand 11209 states and 11982 transitions. [2024-10-12 16:21:45,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2024-10-12 16:21:45,663 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:45,664 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:21:45,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 16:21:45,864 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,SelfDestructingSolverStorable8 [2024-10-12 16:21:45,865 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:45,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:45,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1074418096, now seen corresponding path program 1 times [2024-10-12 16:21:45,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:45,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562296866] [2024-10-12 16:21:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:45,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 16:21:46,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:46,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562296866] [2024-10-12 16:21:46,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562296866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:46,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:46,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:46,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979544786] [2024-10-12 16:21:46,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:46,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:46,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:46,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:46,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:46,115 INFO L87 Difference]: Start difference. First operand 11209 states and 11982 transitions. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 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 16:21:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:46,780 INFO L93 Difference]: Finished difference Result 23733 states and 25590 transitions. [2024-10-12 16:21:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:46,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 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 521 [2024-10-12 16:21:46,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:46,800 INFO L225 Difference]: With dead ends: 23733 [2024-10-12 16:21:46,801 INFO L226 Difference]: Without dead ends: 12854 [2024-10-12 16:21:46,810 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 16:21:46,811 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 189 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:46,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 66 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:21:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12854 states. [2024-10-12 16:21:46,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12854 to 12854. [2024-10-12 16:21:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12854 states, 12853 states have (on average 1.0760911849373687) internal successors, (13831), 12853 states have internal predecessors, (13831), 0 states have call successors, (0), 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 16:21:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12854 states to 12854 states and 13831 transitions. [2024-10-12 16:21:46,919 INFO L78 Accepts]: Start accepts. Automaton has 12854 states and 13831 transitions. Word has length 521 [2024-10-12 16:21:46,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:46,919 INFO L471 AbstractCegarLoop]: Abstraction has 12854 states and 13831 transitions. [2024-10-12 16:21:46,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 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 16:21:46,920 INFO L276 IsEmpty]: Start isEmpty. Operand 12854 states and 13831 transitions. [2024-10-12 16:21:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-10-12 16:21:46,922 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:46,923 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 16:21:46,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 16:21:46,923 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:46,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1110795969, now seen corresponding path program 1 times [2024-10-12 16:21:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:46,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527182747] [2024-10-12 16:21:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:46,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 37 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:47,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:47,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527182747] [2024-10-12 16:21:47,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527182747] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:21:47,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870617276] [2024-10-12 16:21:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:47,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:21:47,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:21:47,431 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 16:21:47,432 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 16:21:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:47,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 16:21:47,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:21:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:48,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:21:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 37 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:48,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870617276] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 16:21:48,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 16:21:48,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 16:21:48,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906087536] [2024-10-12 16:21:48,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 16:21:48,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 16:21:48,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:48,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 16:21:48,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-10-12 16:21:48,613 INFO L87 Difference]: Start difference. First operand 12854 states and 13831 transitions. Second operand has 11 states, 11 states have (on average 144.63636363636363) internal successors, (1591), 10 states have internal predecessors, (1591), 0 states have call successors, (0), 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 16:21:51,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:51,286 INFO L93 Difference]: Finished difference Result 32386 states and 34926 transitions. [2024-10-12 16:21:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 16:21:51,287 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 144.63636363636363) internal successors, (1591), 10 states have internal predecessors, (1591), 0 states have call successors, (0), 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 531 [2024-10-12 16:21:51,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:51,303 INFO L225 Difference]: With dead ends: 32386 [2024-10-12 16:21:51,303 INFO L226 Difference]: Without dead ends: 19823 [2024-10-12 16:21:51,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-10-12 16:21:51,315 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 994 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5948 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 6397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 5948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:51,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 84 Invalid, 6397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 5948 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:21:51,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19823 states. [2024-10-12 16:21:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19823 to 17789. [2024-10-12 16:21:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17789 states, 17788 states have (on average 1.0636946255902855) internal successors, (18921), 17788 states have internal predecessors, (18921), 0 states have call successors, (0), 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 16:21:51,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17789 states to 17789 states and 18921 transitions. [2024-10-12 16:21:51,464 INFO L78 Accepts]: Start accepts. Automaton has 17789 states and 18921 transitions. Word has length 531 [2024-10-12 16:21:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:51,466 INFO L471 AbstractCegarLoop]: Abstraction has 17789 states and 18921 transitions. [2024-10-12 16:21:51,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 144.63636363636363) internal successors, (1591), 10 states have internal predecessors, (1591), 0 states have call successors, (0), 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 16:21:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 17789 states and 18921 transitions. [2024-10-12 16:21:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2024-10-12 16:21:51,477 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:51,477 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:21:51,490 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 16:21:51,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:21:51,679 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:51,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:51,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1508486093, now seen corresponding path program 1 times [2024-10-12 16:21:51,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:51,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414156812] [2024-10-12 16:21:51,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:51,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 507 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-10-12 16:21:52,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:52,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414156812] [2024-10-12 16:21:52,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414156812] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:52,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:52,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:52,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780546109] [2024-10-12 16:21:52,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:52,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:52,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:52,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:52,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:52,029 INFO L87 Difference]: Start difference. First operand 17789 states and 18921 transitions. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 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 16:21:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:52,868 INFO L93 Difference]: Finished difference Result 38867 states and 41530 transitions. [2024-10-12 16:21:52,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:52,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 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 696 [2024-10-12 16:21:52,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:52,895 INFO L225 Difference]: With dead ends: 38867 [2024-10-12 16:21:52,895 INFO L226 Difference]: Without dead ends: 22066 [2024-10-12 16:21:52,911 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 16:21:52,911 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 155 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:52,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 434 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:21:52,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22066 states. [2024-10-12 16:21:53,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22066 to 20421. [2024-10-12 16:21:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20421 states, 20420 states have (on average 1.0589618021547502) internal successors, (21624), 20420 states have internal predecessors, (21624), 0 states have call successors, (0), 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 16:21:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20421 states to 20421 states and 21624 transitions. [2024-10-12 16:21:53,125 INFO L78 Accepts]: Start accepts. Automaton has 20421 states and 21624 transitions. Word has length 696 [2024-10-12 16:21:53,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:53,126 INFO L471 AbstractCegarLoop]: Abstraction has 20421 states and 21624 transitions. [2024-10-12 16:21:53,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 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 16:21:53,126 INFO L276 IsEmpty]: Start isEmpty. Operand 20421 states and 21624 transitions. [2024-10-12 16:21:53,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2024-10-12 16:21:53,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:53,136 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:53,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 16:21:53,137 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:53,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:53,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1673613548, now seen corresponding path program 1 times [2024-10-12 16:21:53,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:53,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032836852] [2024-10-12 16:21:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:53,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 38 proven. 502 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-12 16:21:54,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:54,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032836852] [2024-10-12 16:21:54,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032836852] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:21:54,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342098277] [2024-10-12 16:21:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:54,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:21:54,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:21:54,038 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 16:21:54,039 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 16:21:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:54,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:21:54,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:21:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-10-12 16:21:54,242 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:21:54,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342098277] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:54,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:21:54,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 16:21:54,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520912742] [2024-10-12 16:21:54,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:54,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:54,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:54,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:54,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:21:54,245 INFO L87 Difference]: Start difference. First operand 20421 states and 21624 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 16:21:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:54,884 INFO L93 Difference]: Finished difference Result 44460 states and 47311 transitions. [2024-10-12 16:21:54,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:54,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 780 [2024-10-12 16:21:54,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:54,908 INFO L225 Difference]: With dead ends: 44460 [2024-10-12 16:21:54,908 INFO L226 Difference]: Without dead ends: 25027 [2024-10-12 16:21:54,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:21:54,922 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 342 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:54,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 382 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:21:54,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25027 states. [2024-10-12 16:21:55,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25027 to 25027. [2024-10-12 16:21:55,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25027 states, 25026 states have (on average 1.060497083033645) internal successors, (26540), 25026 states have internal predecessors, (26540), 0 states have call successors, (0), 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 16:21:55,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25027 states to 25027 states and 26540 transitions. [2024-10-12 16:21:55,138 INFO L78 Accepts]: Start accepts. Automaton has 25027 states and 26540 transitions. Word has length 780 [2024-10-12 16:21:55,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:55,139 INFO L471 AbstractCegarLoop]: Abstraction has 25027 states and 26540 transitions. [2024-10-12 16:21:55,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 16:21:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 25027 states and 26540 transitions. [2024-10-12 16:21:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2024-10-12 16:21:55,149 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:55,149 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 16:21:55,168 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 16:21:55,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:21:55,354 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:55,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:55,354 INFO L85 PathProgramCache]: Analyzing trace with hash -268423800, now seen corresponding path program 1 times [2024-10-12 16:21:55,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:55,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061390643] [2024-10-12 16:21:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:55,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 908 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-12 16:21:56,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:56,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061390643] [2024-10-12 16:21:56,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061390643] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:56,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:56,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:56,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019948779] [2024-10-12 16:21:56,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:56,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:21:56,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:56,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:21:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:21:56,235 INFO L87 Difference]: Start difference. First operand 25027 states and 26540 transitions. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 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 16:21:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:57,133 INFO L93 Difference]: Finished difference Result 49724 states and 52748 transitions. [2024-10-12 16:21:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:21:57,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 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 782 [2024-10-12 16:21:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:57,152 INFO L225 Difference]: With dead ends: 49724 [2024-10-12 16:21:57,152 INFO L226 Difference]: Without dead ends: 25027 [2024-10-12 16:21:57,159 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 16:21:57,160 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 268 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:57,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 121 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:21:57,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25027 states. [2024-10-12 16:21:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25027 to 25027. [2024-10-12 16:21:57,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25027 states, 25026 states have (on average 1.0602972908175496) internal successors, (26535), 25026 states have internal predecessors, (26535), 0 states have call successors, (0), 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 16:21:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25027 states to 25027 states and 26535 transitions. [2024-10-12 16:21:57,353 INFO L78 Accepts]: Start accepts. Automaton has 25027 states and 26535 transitions. Word has length 782 [2024-10-12 16:21:57,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:57,353 INFO L471 AbstractCegarLoop]: Abstraction has 25027 states and 26535 transitions. [2024-10-12 16:21:57,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 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 16:21:57,354 INFO L276 IsEmpty]: Start isEmpty. Operand 25027 states and 26535 transitions. [2024-10-12 16:21:57,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2024-10-12 16:21:57,365 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:57,366 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:57,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:21:57,366 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:57,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1381499807, now seen corresponding path program 1 times [2024-10-12 16:21:57,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:57,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472163942] [2024-10-12 16:21:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:57,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1146 backedges. 581 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2024-10-12 16:21:58,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:58,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472163942] [2024-10-12 16:21:58,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472163942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:58,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:58,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:58,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91792998] [2024-10-12 16:21:58,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:58,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:58,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:58,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:58,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:58,009 INFO L87 Difference]: Start difference. First operand 25027 states and 26535 transitions. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 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 16:21:58,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:58,633 INFO L93 Difference]: Finished difference Result 48408 states and 51378 transitions. [2024-10-12 16:21:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:58,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 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 817 [2024-10-12 16:21:58,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:58,651 INFO L225 Difference]: With dead ends: 48408 [2024-10-12 16:21:58,651 INFO L226 Difference]: Without dead ends: 24369 [2024-10-12 16:21:58,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 16:21:58,666 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 169 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:58,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 34 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 16:21:58,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24369 states. [2024-10-12 16:21:58,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24369 to 24040. [2024-10-12 16:21:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24040 states, 24039 states have (on average 1.0536627979533257) internal successors, (25329), 24039 states have internal predecessors, (25329), 0 states have call successors, (0), 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 16:21:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24040 states to 24040 states and 25329 transitions. [2024-10-12 16:21:58,897 INFO L78 Accepts]: Start accepts. Automaton has 24040 states and 25329 transitions. Word has length 817 [2024-10-12 16:21:58,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:58,898 INFO L471 AbstractCegarLoop]: Abstraction has 24040 states and 25329 transitions. [2024-10-12 16:21:58,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 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 16:21:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 24040 states and 25329 transitions. [2024-10-12 16:21:58,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2024-10-12 16:21:58,906 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:58,907 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:58,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 16:21:58,907 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:58,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:58,907 INFO L85 PathProgramCache]: Analyzing trace with hash -970581103, now seen corresponding path program 1 times [2024-10-12 16:21:58,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:58,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252365445] [2024-10-12 16:21:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:58,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-10-12 16:21:59,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:59,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252365445] [2024-10-12 16:21:59,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252365445] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:59,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:59,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:59,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311679377] [2024-10-12 16:21:59,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:59,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:59,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:59,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:59,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:59,321 INFO L87 Difference]: Start difference. First operand 24040 states and 25329 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 16:22:00,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:00,019 INFO L93 Difference]: Finished difference Result 52027 states and 54956 transitions. [2024-10-12 16:22:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:00,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 848 [2024-10-12 16:22:00,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:00,046 INFO L225 Difference]: With dead ends: 52027 [2024-10-12 16:22:00,046 INFO L226 Difference]: Without dead ends: 28975 [2024-10-12 16:22:00,062 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 16:22:00,062 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 272 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:00,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 426 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:22:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28975 states. [2024-10-12 16:22:00,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28975 to 27659. [2024-10-12 16:22:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27659 states, 27658 states have (on average 1.042555499313038) internal successors, (28835), 27658 states have internal predecessors, (28835), 0 states have call successors, (0), 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 16:22:00,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27659 states to 27659 states and 28835 transitions. [2024-10-12 16:22:00,391 INFO L78 Accepts]: Start accepts. Automaton has 27659 states and 28835 transitions. Word has length 848 [2024-10-12 16:22:00,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:00,391 INFO L471 AbstractCegarLoop]: Abstraction has 27659 states and 28835 transitions. [2024-10-12 16:22:00,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 16:22:00,392 INFO L276 IsEmpty]: Start isEmpty. Operand 27659 states and 28835 transitions. [2024-10-12 16:22:00,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2024-10-12 16:22:00,408 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:00,409 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:22:00,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 16:22:00,409 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:00,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:00,409 INFO L85 PathProgramCache]: Analyzing trace with hash 286810586, now seen corresponding path program 1 times [2024-10-12 16:22:00,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:00,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599095195] [2024-10-12 16:22:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:00,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 839 proven. 139 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-10-12 16:22:01,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:01,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599095195] [2024-10-12 16:22:01,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599095195] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:01,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575469459] [2024-10-12 16:22:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:01,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:01,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:01,436 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 16:22:01,437 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 16:22:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:01,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:22:01,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 801 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2024-10-12 16:22:02,524 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:22:02,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575469459] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:02,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:22:02,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-12 16:22:02,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504487420] [2024-10-12 16:22:02,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:02,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:02,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:02,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:02,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:22:02,526 INFO L87 Difference]: Start difference. First operand 27659 states and 28835 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:03,150 INFO L93 Difference]: Finished difference Result 54330 states and 56675 transitions. [2024-10-12 16:22:03,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:03,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 919 [2024-10-12 16:22:03,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:03,174 INFO L225 Difference]: With dead ends: 54330 [2024-10-12 16:22:03,174 INFO L226 Difference]: Without dead ends: 27659 [2024-10-12 16:22:03,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:22:03,191 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 88 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:03,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 106 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 16:22:03,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27659 states. [2024-10-12 16:22:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27659 to 27659. [2024-10-12 16:22:03,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27659 states, 27658 states have (on average 1.0424470316002603) internal successors, (28832), 27658 states have internal predecessors, (28832), 0 states have call successors, (0), 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 16:22:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27659 states to 27659 states and 28832 transitions. [2024-10-12 16:22:03,403 INFO L78 Accepts]: Start accepts. Automaton has 27659 states and 28832 transitions. Word has length 919 [2024-10-12 16:22:03,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:03,403 INFO L471 AbstractCegarLoop]: Abstraction has 27659 states and 28832 transitions. [2024-10-12 16:22:03,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:03,403 INFO L276 IsEmpty]: Start isEmpty. Operand 27659 states and 28832 transitions. [2024-10-12 16:22:03,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2024-10-12 16:22:03,416 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:03,416 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:22:03,429 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 16:22:03,617 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,SelfDestructingSolverStorable16 [2024-10-12 16:22:03,617 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:03,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:03,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1903021823, now seen corresponding path program 1 times [2024-10-12 16:22:03,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:03,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373295905] [2024-10-12 16:22:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:03,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 1374 proven. 168 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2024-10-12 16:22:04,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:04,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373295905] [2024-10-12 16:22:04,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373295905] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:04,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125761285] [2024-10-12 16:22:04,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:04,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:04,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:04,394 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 16:22:04,395 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 16:22:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:04,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:22:04,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 720 proven. 0 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2024-10-12 16:22:04,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:22:04,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125761285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:04,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:22:04,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 16:22:04,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935250861] [2024-10-12 16:22:04,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:04,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:04,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:04,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:04,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:22:04,763 INFO L87 Difference]: Start difference. First operand 27659 states and 28832 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 16:22:05,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:05,450 INFO L93 Difference]: Finished difference Result 54001 states and 56314 transitions. [2024-10-12 16:22:05,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:05,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 1062 [2024-10-12 16:22:05,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:05,474 INFO L225 Difference]: With dead ends: 54001 [2024-10-12 16:22:05,474 INFO L226 Difference]: Without dead ends: 27330 [2024-10-12 16:22:05,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 1061 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:22:05,486 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 201 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:05,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 369 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 16:22:05,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27330 states. [2024-10-12 16:22:05,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27330 to 25356. [2024-10-12 16:22:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25356 states, 25355 states have (on average 1.0323013212384144) internal successors, (26174), 25355 states have internal predecessors, (26174), 0 states have call successors, (0), 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 16:22:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25356 states to 25356 states and 26174 transitions. [2024-10-12 16:22:05,797 INFO L78 Accepts]: Start accepts. Automaton has 25356 states and 26174 transitions. Word has length 1062 [2024-10-12 16:22:05,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:05,798 INFO L471 AbstractCegarLoop]: Abstraction has 25356 states and 26174 transitions. [2024-10-12 16:22:05,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 16:22:05,798 INFO L276 IsEmpty]: Start isEmpty. Operand 25356 states and 26174 transitions. [2024-10-12 16:22:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2024-10-12 16:22:05,818 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:05,818 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-12 16:22:05,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 16:22:06,020 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,SelfDestructingSolverStorable17 [2024-10-12 16:22:06,021 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:06,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:06,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1562896656, now seen corresponding path program 1 times [2024-10-12 16:22:06,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:06,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065803142] [2024-10-12 16:22:06,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:06,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1639 proven. 202 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-10-12 16:22:07,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065803142] [2024-10-12 16:22:07,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065803142] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211410694] [2024-10-12 16:22:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:07,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:07,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:07,509 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 16:22:07,518 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 16:22:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:07,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:22:07,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1623 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-10-12 16:22:08,563 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:22:08,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211410694] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:08,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:22:08,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 16:22:08,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485171018] [2024-10-12 16:22:08,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:08,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:22:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:08,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:22:08,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:22:08,565 INFO L87 Difference]: Start difference. First operand 25356 states and 26174 transitions. Second operand has 4 states, 4 states have (on average 189.25) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 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 16:22:09,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:09,408 INFO L93 Difference]: Finished difference Result 49066 states and 50642 transitions. [2024-10-12 16:22:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:22:09,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 189.25) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 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 1130 [2024-10-12 16:22:09,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:09,432 INFO L225 Difference]: With dead ends: 49066 [2024-10-12 16:22:09,432 INFO L226 Difference]: Without dead ends: 24698 [2024-10-12 16:22:09,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:22:09,447 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 307 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:09,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 33 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:22:09,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24698 states. [2024-10-12 16:22:09,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24698 to 24369. [2024-10-12 16:22:09,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24369 states, 24368 states have (on average 1.0287672357189757) internal successors, (25069), 24368 states have internal predecessors, (25069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24369 states to 24369 states and 25069 transitions. [2024-10-12 16:22:09,657 INFO L78 Accepts]: Start accepts. Automaton has 24369 states and 25069 transitions. Word has length 1130 [2024-10-12 16:22:09,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:09,657 INFO L471 AbstractCegarLoop]: Abstraction has 24369 states and 25069 transitions. [2024-10-12 16:22:09,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.25) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 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 16:22:09,658 INFO L276 IsEmpty]: Start isEmpty. Operand 24369 states and 25069 transitions. [2024-10-12 16:22:09,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1174 [2024-10-12 16:22:09,671 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:09,671 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:22:09,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 16:22:09,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:09,872 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:09,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:09,873 INFO L85 PathProgramCache]: Analyzing trace with hash -56046133, now seen corresponding path program 1 times [2024-10-12 16:22:09,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:09,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92035556] [2024-10-12 16:22:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:09,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 1366 proven. 139 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2024-10-12 16:22:11,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:11,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92035556] [2024-10-12 16:22:11,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92035556] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:11,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739258485] [2024-10-12 16:22:11,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:11,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:11,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:11,157 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 16:22:11,157 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 16:22:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:11,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 1357 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 16:22:11,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 745 proven. 19 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-10-12 16:22:12,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:22:12,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 764 proven. 0 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-10-12 16:22:12,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739258485] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:12,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 16:22:12,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2024-10-12 16:22:12,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411312863] [2024-10-12 16:22:12,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:12,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:22:12,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:12,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:22:12,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:22:12,464 INFO L87 Difference]: Start difference. First operand 24369 states and 25069 transitions. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 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 16:22:13,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:13,252 INFO L93 Difference]: Finished difference Result 24719 states and 25420 transitions. [2024-10-12 16:22:13,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:22:13,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 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 1173 [2024-10-12 16:22:13,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:13,270 INFO L225 Difference]: With dead ends: 24719 [2024-10-12 16:22:13,270 INFO L226 Difference]: Without dead ends: 24698 [2024-10-12 16:22:13,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2349 GetRequests, 2342 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:22:13,275 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 517 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:13,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 14 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:22:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24698 states. [2024-10-12 16:22:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24698 to 24369. [2024-10-12 16:22:13,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24369 states, 24368 states have (on average 1.0286441234405779) internal successors, (25066), 24368 states have internal predecessors, (25066), 0 states have call successors, (0), 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 16:22:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24369 states to 24369 states and 25066 transitions. [2024-10-12 16:22:13,446 INFO L78 Accepts]: Start accepts. Automaton has 24369 states and 25066 transitions. Word has length 1173 [2024-10-12 16:22:13,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:13,447 INFO L471 AbstractCegarLoop]: Abstraction has 24369 states and 25066 transitions. [2024-10-12 16:22:13,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 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 16:22:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 24369 states and 25066 transitions. [2024-10-12 16:22:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1494 [2024-10-12 16:22:13,466 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:13,467 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:22:13,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 16:22:13,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:13,667 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:13,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:13,668 INFO L85 PathProgramCache]: Analyzing trace with hash -110773075, now seen corresponding path program 1 times [2024-10-12 16:22:13,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:13,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785609458] [2024-10-12 16:22:13,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:13,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3559 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 3427 trivial. 0 not checked. [2024-10-12 16:22:14,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785609458] [2024-10-12 16:22:14,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785609458] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:14,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:22:14,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:22:14,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895949237] [2024-10-12 16:22:14,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:14,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:14,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:14,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:14,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:22:14,454 INFO L87 Difference]: Start difference. First operand 24369 states and 25066 transitions. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 16:22:15,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:15,125 INFO L93 Difference]: Finished difference Result 50382 states and 51896 transitions. [2024-10-12 16:22:15,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:15,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 1493 [2024-10-12 16:22:15,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:15,149 INFO L225 Difference]: With dead ends: 50382 [2024-10-12 16:22:15,149 INFO L226 Difference]: Without dead ends: 26343 [2024-10-12 16:22:15,166 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 16:22:15,166 INFO L432 NwaCegarLoop]: 410 mSDtfsCounter, 321 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:15,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 415 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 16:22:15,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26343 states. [2024-10-12 16:22:15,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26343 to 22066. [2024-10-12 16:22:15,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22066 states, 22065 states have (on average 1.0271017448447768) internal successors, (22663), 22065 states have internal predecessors, (22663), 0 states have call successors, (0), 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 16:22:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22066 states to 22066 states and 22663 transitions. [2024-10-12 16:22:15,426 INFO L78 Accepts]: Start accepts. Automaton has 22066 states and 22663 transitions. Word has length 1493 [2024-10-12 16:22:15,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:15,427 INFO L471 AbstractCegarLoop]: Abstraction has 22066 states and 22663 transitions. [2024-10-12 16:22:15,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 16:22:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 22066 states and 22663 transitions. [2024-10-12 16:22:15,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1626 [2024-10-12 16:22:15,448 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:15,448 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 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] [2024-10-12 16:22:15,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 16:22:15,448 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:15,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1548009632, now seen corresponding path program 1 times [2024-10-12 16:22:15,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:15,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11533654] [2024-10-12 16:22:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:15,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5010 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 4840 trivial. 0 not checked. [2024-10-12 16:22:16,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:16,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11533654] [2024-10-12 16:22:16,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11533654] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:16,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:22:16,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:22:16,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597334827] [2024-10-12 16:22:16,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:16,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:16,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:16,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:16,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:22:16,169 INFO L87 Difference]: Start difference. First operand 22066 states and 22663 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 16:22:16,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:16,788 INFO L93 Difference]: Finished difference Result 43144 states and 44332 transitions. [2024-10-12 16:22:16,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:16,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 1625 [2024-10-12 16:22:16,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:16,804 INFO L225 Difference]: With dead ends: 43144 [2024-10-12 16:22:16,805 INFO L226 Difference]: Without dead ends: 21408 [2024-10-12 16:22:16,815 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 16:22:16,815 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 316 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:16,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 419 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 16:22:16,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21408 states. [2024-10-12 16:22:16,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21408 to 20092. [2024-10-12 16:22:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20092 states, 20091 states have (on average 1.0209546563137724) internal successors, (20512), 20091 states have internal predecessors, (20512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:17,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20092 states to 20092 states and 20512 transitions. [2024-10-12 16:22:17,008 INFO L78 Accepts]: Start accepts. Automaton has 20092 states and 20512 transitions. Word has length 1625 [2024-10-12 16:22:17,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:17,009 INFO L471 AbstractCegarLoop]: Abstraction has 20092 states and 20512 transitions. [2024-10-12 16:22:17,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 16:22:17,009 INFO L276 IsEmpty]: Start isEmpty. Operand 20092 states and 20512 transitions. [2024-10-12 16:22:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1832 [2024-10-12 16:22:17,032 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:17,032 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-10-12 16:22:17,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 16:22:17,032 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:17,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash 409496467, now seen corresponding path program 1 times [2024-10-12 16:22:17,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:17,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437296968] [2024-10-12 16:22:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5844 backedges. 4022 proven. 0 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2024-10-12 16:22:18,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:18,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437296968] [2024-10-12 16:22:18,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437296968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:18,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:22:18,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:22:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562066387] [2024-10-12 16:22:18,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:18,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:22:18,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:18,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:22:18,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:22:18,668 INFO L87 Difference]: Start difference. First operand 20092 states and 20512 transitions. Second operand has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 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 16:22:19,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:19,410 INFO L93 Difference]: Finished difference Result 39210 states and 40044 transitions. [2024-10-12 16:22:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 16:22:19,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 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 1831 [2024-10-12 16:22:19,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:19,426 INFO L225 Difference]: With dead ends: 39210 [2024-10-12 16:22:19,426 INFO L226 Difference]: Without dead ends: 20106 [2024-10-12 16:22:19,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:22:19,434 INFO L432 NwaCegarLoop]: 433 mSDtfsCounter, 218 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:19,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 444 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:22:19,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20106 states. [2024-10-12 16:22:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20106 to 20092. [2024-10-12 16:22:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20092 states, 20091 states have (on average 1.0206560151311532) internal successors, (20506), 20091 states have internal predecessors, (20506), 0 states have call successors, (0), 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 16:22:19,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20092 states to 20092 states and 20506 transitions. [2024-10-12 16:22:19,580 INFO L78 Accepts]: Start accepts. Automaton has 20092 states and 20506 transitions. Word has length 1831 [2024-10-12 16:22:19,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:19,581 INFO L471 AbstractCegarLoop]: Abstraction has 20092 states and 20506 transitions. [2024-10-12 16:22:19,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 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 16:22:19,581 INFO L276 IsEmpty]: Start isEmpty. Operand 20092 states and 20506 transitions. [2024-10-12 16:22:19,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1962 [2024-10-12 16:22:19,605 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:19,606 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 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] [2024-10-12 16:22:19,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 16:22:19,606 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:19,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:19,607 INFO L85 PathProgramCache]: Analyzing trace with hash -754334787, now seen corresponding path program 1 times [2024-10-12 16:22:19,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:19,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209572801] [2024-10-12 16:22:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:19,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7027 backedges. 4654 proven. 0 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2024-10-12 16:22:20,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:20,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209572801] [2024-10-12 16:22:20,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209572801] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:20,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:22:20,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:22:20,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108457968] [2024-10-12 16:22:20,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:20,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:22:20,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:20,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:22:20,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:22:20,978 INFO L87 Difference]: Start difference. First operand 20092 states and 20506 transitions. Second operand has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 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 16:22:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:21,805 INFO L93 Difference]: Finished difference Result 39525 states and 40350 transitions. [2024-10-12 16:22:21,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:22:21,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 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 1961 [2024-10-12 16:22:21,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:21,820 INFO L225 Difference]: With dead ends: 39525 [2024-10-12 16:22:21,821 INFO L226 Difference]: Without dead ends: 20421 [2024-10-12 16:22:21,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:22:21,828 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 120 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:21,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 565 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:22:21,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20421 states. [2024-10-12 16:22:21,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20421 to 20421. [2024-10-12 16:22:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20421 states, 20420 states have (on average 1.0203721841332027) internal successors, (20836), 20420 states have internal predecessors, (20836), 0 states have call successors, (0), 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 16:22:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20421 states to 20421 states and 20836 transitions. [2024-10-12 16:22:21,978 INFO L78 Accepts]: Start accepts. Automaton has 20421 states and 20836 transitions. Word has length 1961 [2024-10-12 16:22:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:21,979 INFO L471 AbstractCegarLoop]: Abstraction has 20421 states and 20836 transitions. [2024-10-12 16:22:21,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 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 16:22:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 20421 states and 20836 transitions. [2024-10-12 16:22:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1964 [2024-10-12 16:22:22,003 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:22,003 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:22,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 16:22:22,003 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:22,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash -595836786, now seen corresponding path program 1 times [2024-10-12 16:22:22,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:22,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695796307] [2024-10-12 16:22:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:22,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6712 backedges. 4226 proven. 1170 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2024-10-12 16:22:25,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:25,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695796307] [2024-10-12 16:22:25,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695796307] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:25,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355464699] [2024-10-12 16:22:25,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:25,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:25,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:25,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:22:25,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 16:22:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:25,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 2238 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:22:25,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6712 backedges. 4559 proven. 0 refuted. 0 times theorem prover too weak. 2153 trivial. 0 not checked. [2024-10-12 16:22:25,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:22:25,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355464699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:25,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:22:25,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-10-12 16:22:25,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239889930] [2024-10-12 16:22:25,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:25,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:25,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:25,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:25,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:22:25,893 INFO L87 Difference]: Start difference. First operand 20421 states and 20836 transitions. Second operand has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 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 16:22:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:26,486 INFO L93 Difference]: Finished difference Result 39854 states and 40678 transitions. [2024-10-12 16:22:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:26,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 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 1963 [2024-10-12 16:22:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:26,502 INFO L225 Difference]: With dead ends: 39854 [2024-10-12 16:22:26,503 INFO L226 Difference]: Without dead ends: 20421 [2024-10-12 16:22:26,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1971 GetRequests, 1965 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:22:26,515 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 66 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:26,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 414 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 16:22:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20421 states. [2024-10-12 16:22:26,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20421 to 19434. [2024-10-12 16:22:26,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19434 states, 19433 states have (on average 1.0193485308495858) internal successors, (19809), 19433 states have internal predecessors, (19809), 0 states have call successors, (0), 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 16:22:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19434 states to 19434 states and 19809 transitions. [2024-10-12 16:22:26,660 INFO L78 Accepts]: Start accepts. Automaton has 19434 states and 19809 transitions. Word has length 1963 [2024-10-12 16:22:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:26,660 INFO L471 AbstractCegarLoop]: Abstraction has 19434 states and 19809 transitions. [2024-10-12 16:22:26,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 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 16:22:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 19434 states and 19809 transitions. [2024-10-12 16:22:26,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2064 [2024-10-12 16:22:26,685 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:26,686 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:26,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 16:22:26,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-12 16:22:26,887 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:26,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:26,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1397784487, now seen corresponding path program 1 times [2024-10-12 16:22:26,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:26,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959760550] [2024-10-12 16:22:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:26,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7732 backedges. 5681 proven. 140 refuted. 0 times theorem prover too weak. 1911 trivial. 0 not checked. [2024-10-12 16:22:28,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:28,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959760550] [2024-10-12 16:22:28,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959760550] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:28,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811009693] [2024-10-12 16:22:28,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:28,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:28,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:28,889 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:22:28,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 16:22:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:29,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 2363 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:22:29,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7732 backedges. 4468 proven. 0 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked. [2024-10-12 16:22:29,373 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:22:29,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811009693] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:29,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:22:29,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 16:22:29,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711648624] [2024-10-12 16:22:29,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:29,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:29,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:29,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:29,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:22:29,375 INFO L87 Difference]: Start difference. First operand 19434 states and 19809 transitions. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 16:22:30,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:30,057 INFO L93 Difference]: Finished difference Result 40512 states and 41313 transitions. [2024-10-12 16:22:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:30,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 2063 [2024-10-12 16:22:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:30,073 INFO L225 Difference]: With dead ends: 40512 [2024-10-12 16:22:30,073 INFO L226 Difference]: Without dead ends: 22066 [2024-10-12 16:22:30,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2068 GetRequests, 2063 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:22:30,077 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 222 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:30,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 429 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:22:30,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22066 states. [2024-10-12 16:22:30,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22066 to 21079. [2024-10-12 16:22:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21079 states, 21078 states have (on average 1.0184078185786127) internal successors, (21466), 21078 states have internal predecessors, (21466), 0 states have call successors, (0), 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 16:22:30,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21079 states to 21079 states and 21466 transitions. [2024-10-12 16:22:30,224 INFO L78 Accepts]: Start accepts. Automaton has 21079 states and 21466 transitions. Word has length 2063 [2024-10-12 16:22:30,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:30,225 INFO L471 AbstractCegarLoop]: Abstraction has 21079 states and 21466 transitions. [2024-10-12 16:22:30,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 16:22:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 21079 states and 21466 transitions. [2024-10-12 16:22:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2089 [2024-10-12 16:22:30,250 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:30,251 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:30,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 16:22:30,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-12 16:22:30,452 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:30,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:30,452 INFO L85 PathProgramCache]: Analyzing trace with hash 84863513, now seen corresponding path program 1 times [2024-10-12 16:22:30,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:30,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585857043] [2024-10-12 16:22:30,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:30,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7958 backedges. 4619 proven. 0 refuted. 0 times theorem prover too weak. 3339 trivial. 0 not checked. [2024-10-12 16:22:31,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:31,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585857043] [2024-10-12 16:22:31,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585857043] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:31,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:22:31,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:22:31,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814165359] [2024-10-12 16:22:31,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:31,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:31,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:31,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:22:31,343 INFO L87 Difference]: Start difference. First operand 21079 states and 21466 transitions. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 16:22:31,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:31,934 INFO L93 Difference]: Finished difference Result 41499 states and 42272 transitions. [2024-10-12 16:22:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:31,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 2088 [2024-10-12 16:22:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:31,952 INFO L225 Difference]: With dead ends: 41499 [2024-10-12 16:22:31,952 INFO L226 Difference]: Without dead ends: 21079 [2024-10-12 16:22:31,965 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 16:22:31,966 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 219 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:31,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 430 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 16:22:31,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21079 states. [2024-10-12 16:22:32,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21079 to 20092. [2024-10-12 16:22:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20092 states, 20091 states have (on average 1.0150813797222638) internal successors, (20394), 20091 states have internal predecessors, (20394), 0 states have call successors, (0), 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 16:22:32,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20092 states to 20092 states and 20394 transitions. [2024-10-12 16:22:32,123 INFO L78 Accepts]: Start accepts. Automaton has 20092 states and 20394 transitions. Word has length 2088 [2024-10-12 16:22:32,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:32,123 INFO L471 AbstractCegarLoop]: Abstraction has 20092 states and 20394 transitions. [2024-10-12 16:22:32,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 16:22:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 20092 states and 20394 transitions. [2024-10-12 16:22:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2231 [2024-10-12 16:22:32,150 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:32,150 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:32,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 16:22:32,151 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:32,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:32,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1176626094, now seen corresponding path program 1 times [2024-10-12 16:22:32,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:32,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151862851] [2024-10-12 16:22:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:32,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9000 backedges. 6479 proven. 140 refuted. 0 times theorem prover too weak. 2381 trivial. 0 not checked. [2024-10-12 16:22:34,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:34,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151862851] [2024-10-12 16:22:34,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151862851] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:34,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464393645] [2024-10-12 16:22:34,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:34,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:34,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:34,409 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:22:34,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 16:22:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:34,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 16:22:34,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9000 backedges. 5850 proven. 67 refuted. 0 times theorem prover too weak. 3083 trivial. 0 not checked. [2024-10-12 16:22:40,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:22:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 9000 backedges. 4749 proven. 0 refuted. 0 times theorem prover too weak. 4251 trivial. 0 not checked. [2024-10-12 16:22:42,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464393645] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:42,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 16:22:42,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 9 [2024-10-12 16:22:42,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390677620] [2024-10-12 16:22:42,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:42,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:42,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:42,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:42,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:22:42,725 INFO L87 Difference]: Start difference. First operand 20092 states and 20394 transitions. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 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 16:22:43,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:43,360 INFO L93 Difference]: Finished difference Result 39854 states and 40459 transitions. [2024-10-12 16:22:43,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:43,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 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 2230 [2024-10-12 16:22:43,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:43,378 INFO L225 Difference]: With dead ends: 39854 [2024-10-12 16:22:43,378 INFO L226 Difference]: Without dead ends: 20750 [2024-10-12 16:22:43,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4464 GetRequests, 4457 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:22:43,389 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 268 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:43,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 35 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:22:43,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20750 states. [2024-10-12 16:22:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20750 to 19434. [2024-10-12 16:22:43,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19434 states, 19433 states have (on average 1.0139453506921217) internal successors, (19704), 19433 states have internal predecessors, (19704), 0 states have call successors, (0), 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 16:22:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19434 states to 19434 states and 19704 transitions. [2024-10-12 16:22:43,532 INFO L78 Accepts]: Start accepts. Automaton has 19434 states and 19704 transitions. Word has length 2230 [2024-10-12 16:22:43,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:43,533 INFO L471 AbstractCegarLoop]: Abstraction has 19434 states and 19704 transitions. [2024-10-12 16:22:43,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 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 16:22:43,533 INFO L276 IsEmpty]: Start isEmpty. Operand 19434 states and 19704 transitions. [2024-10-12 16:22:43,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2468 [2024-10-12 16:22:43,562 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:43,563 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:22:43,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 16:22:43,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-12 16:22:43,764 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:43,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash -95886070, now seen corresponding path program 1 times [2024-10-12 16:22:43,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:43,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122718041] [2024-10-12 16:22:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:43,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat