./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/Problem11_label11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label11.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 2521d3888c3910ac16b8a52868332f768d7d80524e896b9e06e11f157c249614 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 23:17:37,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 23:17:37,274 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 23:17:37,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 23:17:37,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 23:17:37,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 23:17:37,299 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 23:17:37,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 23:17:37,299 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 23:17:37,299 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 23:17:37,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 23:17:37,300 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 23:17:37,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 23:17:37,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 23:17:37,301 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 23:17:37,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 23:17:37,303 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 23:17:37,303 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 23:17:37,303 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 23:17:37,303 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 23:17:37,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 23:17:37,304 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 23:17:37,304 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 23:17:37,304 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 23:17:37,305 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 23:17:37,305 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 23:17:37,305 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 23:17:37,305 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 23:17:37,306 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 23:17:37,306 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 23:17:37,306 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 23:17:37,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 23:17:37,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:17:37,307 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 23:17:37,307 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 23:17:37,307 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 23:17:37,308 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 23:17:37,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 23:17:37,308 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 23:17:37,308 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 23:17:37,309 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 23:17:37,309 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 23:17:37,309 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2521d3888c3910ac16b8a52868332f768d7d80524e896b9e06e11f157c249614 [2024-10-10 23:17:37,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 23:17:37,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 23:17:37,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 23:17:37,538 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 23:17:37,542 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 23:17:37,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label11.c [2024-10-10 23:17:38,831 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 23:17:39,079 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 23:17:39,081 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label11.c [2024-10-10 23:17:39,098 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cc619376b/6cb5f8f5b3294239b8148d8f19c2b4b9/FLAGdcdb05a37 [2024-10-10 23:17:39,112 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cc619376b/6cb5f8f5b3294239b8148d8f19c2b4b9 [2024-10-10 23:17:39,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 23:17:39,116 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 23:17:39,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 23:17:39,118 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 23:17:39,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 23:17:39,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5295962a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39, skipping insertion in model container [2024-10-10 23:17:39,124 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,187 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 23:17:39,382 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/Problem11_label11.c[8791,8804] [2024-10-10 23:17:39,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:17:39,524 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 23:17:39,551 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/Problem11_label11.c[8791,8804] [2024-10-10 23:17:39,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:17:39,623 INFO L204 MainTranslator]: Completed translation [2024-10-10 23:17:39,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39 WrapperNode [2024-10-10 23:17:39,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 23:17:39,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 23:17:39,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 23:17:39,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 23:17:39,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,723 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-10-10 23:17:39,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 23:17:39,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 23:17:39,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 23:17:39,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 23:17:39,733 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,744 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,779 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]. [2024-10-10 23:17:39,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,781 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 23:17:39,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 23:17:39,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 23:17:39,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 23:17:39,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (1/1) ... [2024-10-10 23:17:39,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:17:39,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:17:39,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 23:17:39,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 23:17:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 23:17:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 23:17:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 23:17:39,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 23:17:39,982 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 23:17:39,984 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 23:17:41,173 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-10-10 23:17:41,173 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 23:17:41,227 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 23:17:41,227 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 23:17:41,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:17:41 BoogieIcfgContainer [2024-10-10 23:17:41,228 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 23:17:41,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 23:17:41,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 23:17:41,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 23:17:41,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:17:39" (1/3) ... [2024-10-10 23:17:41,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6539e210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:17:41, skipping insertion in model container [2024-10-10 23:17:41,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:39" (2/3) ... [2024-10-10 23:17:41,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6539e210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:17:41, skipping insertion in model container [2024-10-10 23:17:41,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:17:41" (3/3) ... [2024-10-10 23:17:41,237 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label11.c [2024-10-10 23:17:41,250 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 23:17:41,250 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 23:17:41,310 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 23:17:41,316 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;@4c1a8618, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 23:17:41,316 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 23:17:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:41,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-10 23:17:41,327 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:41,328 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:41,329 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:41,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:41,333 INFO L85 PathProgramCache]: Analyzing trace with hash -877625866, now seen corresponding path program 1 times [2024-10-10 23:17:41,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:41,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999876480] [2024-10-10 23:17:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:41,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:41,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:41,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999876480] [2024-10-10 23:17:41,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999876480] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:41,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:41,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:17:41,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036921793] [2024-10-10 23:17:41,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:41,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 23:17:41,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:41,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 23:17:41,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:17:41,536 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:41,572 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2024-10-10 23:17:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 23:17:41,575 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-10-10 23:17:41,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:41,584 INFO L225 Difference]: With dead ends: 441 [2024-10-10 23:17:41,584 INFO L226 Difference]: Without dead ends: 219 [2024-10-10 23:17:41,587 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 [2024-10-10 23:17:41,589 INFO L432 NwaCegarLoop]: 355 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, 355 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 [2024-10-10 23:17:41,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 23:17:41,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-10 23:17:41,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-10-10 23:17:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2024-10-10 23:17:41,625 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 60 [2024-10-10 23:17:41,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:41,626 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2024-10-10 23:17:41,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2024-10-10 23:17:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-10 23:17:41,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:41,628 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:41,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 23:17:41,628 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:41,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:41,629 INFO L85 PathProgramCache]: Analyzing trace with hash 53094758, now seen corresponding path program 1 times [2024-10-10 23:17:41,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:41,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125308731] [2024-10-10 23:17:41,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:41,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:41,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:41,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125308731] [2024-10-10 23:17:41,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125308731] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:41,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:41,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:17:41,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563978477] [2024-10-10 23:17:41,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:41,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:41,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:41,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:41,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:41,821 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:42,543 INFO L93 Difference]: Finished difference Result 639 states and 1042 transitions. [2024-10-10 23:17:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:42,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-10-10 23:17:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:42,546 INFO L225 Difference]: With dead ends: 639 [2024-10-10 23:17:42,546 INFO L226 Difference]: Without dead ends: 421 [2024-10-10 23:17:42,547 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 [2024-10-10 23:17:42,548 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 151 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:42,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 120 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:17:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-10-10 23:17:42,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 411. [2024-10-10 23:17:42,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.524390243902439) internal successors, (625), 410 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:42,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 625 transitions. [2024-10-10 23:17:42,565 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 625 transitions. Word has length 60 [2024-10-10 23:17:42,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:42,566 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 625 transitions. [2024-10-10 23:17:42,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 625 transitions. [2024-10-10 23:17:42,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-10 23:17:42,569 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:42,569 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:42,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 23:17:42,569 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:42,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1293007896, now seen corresponding path program 1 times [2024-10-10 23:17:42,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:42,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275956004] [2024-10-10 23:17:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:42,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:42,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:42,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275956004] [2024-10-10 23:17:42,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275956004] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:42,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:42,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:17:42,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741358520] [2024-10-10 23:17:42,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:42,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:42,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:42,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:42,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:42,706 INFO L87 Difference]: Start difference. First operand 411 states and 625 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:43,278 INFO L93 Difference]: Finished difference Result 1193 states and 1820 transitions. [2024-10-10 23:17:43,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:43,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-10-10 23:17:43,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:43,281 INFO L225 Difference]: With dead ends: 1193 [2024-10-10 23:17:43,281 INFO L226 Difference]: Without dead ends: 783 [2024-10-10 23:17:43,282 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 [2024-10-10 23:17:43,283 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 175 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:43,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 152 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:17:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-10-10 23:17:43,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2024-10-10 23:17:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 782 states have (on average 1.3746803069053708) internal successors, (1075), 782 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1075 transitions. [2024-10-10 23:17:43,313 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1075 transitions. Word has length 126 [2024-10-10 23:17:43,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:43,313 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1075 transitions. [2024-10-10 23:17:43,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:43,314 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1075 transitions. [2024-10-10 23:17:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-10 23:17:43,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:43,315 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:43,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 23:17:43,316 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:43,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash 350897778, now seen corresponding path program 1 times [2024-10-10 23:17:43,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:43,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971084507] [2024-10-10 23:17:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:43,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:43,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:43,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971084507] [2024-10-10 23:17:43,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971084507] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:43,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:43,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:17:43,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647934207] [2024-10-10 23:17:43,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:43,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:43,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:43,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:43,588 INFO L87 Difference]: Start difference. First operand 783 states and 1075 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:44,116 INFO L93 Difference]: Finished difference Result 1935 states and 2598 transitions. [2024-10-10 23:17:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:44,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2024-10-10 23:17:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:44,120 INFO L225 Difference]: With dead ends: 1935 [2024-10-10 23:17:44,120 INFO L226 Difference]: Without dead ends: 1153 [2024-10-10 23:17:44,122 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 [2024-10-10 23:17:44,122 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:44,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 188 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:17:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2024-10-10 23:17:44,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1152. [2024-10-10 23:17:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 1.2701998262380538) internal successors, (1462), 1151 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1462 transitions. [2024-10-10 23:17:44,137 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1462 transitions. Word has length 130 [2024-10-10 23:17:44,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:44,137 INFO L471 AbstractCegarLoop]: Abstraction has 1152 states and 1462 transitions. [2024-10-10 23:17:44,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:44,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1462 transitions. [2024-10-10 23:17:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-10 23:17:44,139 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:44,140 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:44,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 23:17:44,140 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:44,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:44,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1501765399, now seen corresponding path program 1 times [2024-10-10 23:17:44,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:44,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721661493] [2024-10-10 23:17:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:44,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:44,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:44,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721661493] [2024-10-10 23:17:44,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721661493] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:44,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:44,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:44,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287516399] [2024-10-10 23:17:44,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:44,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:44,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:44,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:44,298 INFO L87 Difference]: Start difference. First operand 1152 states and 1462 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:44,941 INFO L93 Difference]: Finished difference Result 2678 states and 3480 transitions. [2024-10-10 23:17:44,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:44,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2024-10-10 23:17:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:44,947 INFO L225 Difference]: With dead ends: 2678 [2024-10-10 23:17:44,947 INFO L226 Difference]: Without dead ends: 1711 [2024-10-10 23:17:44,949 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 [2024-10-10 23:17:44,949 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 145 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:44,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 329 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:17:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2024-10-10 23:17:44,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1520. [2024-10-10 23:17:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 1.2560895325872283) internal successors, (1908), 1519 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 1908 transitions. [2024-10-10 23:17:44,969 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 1908 transitions. Word has length 172 [2024-10-10 23:17:44,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:44,970 INFO L471 AbstractCegarLoop]: Abstraction has 1520 states and 1908 transitions. [2024-10-10 23:17:44,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:44,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 1908 transitions. [2024-10-10 23:17:44,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-10-10 23:17:44,973 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:44,973 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:44,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 23:17:44,973 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:44,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1597798325, now seen corresponding path program 1 times [2024-10-10 23:17:44,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:44,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233801769] [2024-10-10 23:17:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:44,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-10 23:17:45,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:45,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233801769] [2024-10-10 23:17:45,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233801769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:45,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:45,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:45,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628140999] [2024-10-10 23:17:45,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:45,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:45,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:45,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:45,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:45,208 INFO L87 Difference]: Start difference. First operand 1520 states and 1908 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:45,876 INFO L93 Difference]: Finished difference Result 3969 states and 4985 transitions. [2024-10-10 23:17:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:45,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2024-10-10 23:17:45,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:45,886 INFO L225 Difference]: With dead ends: 3969 [2024-10-10 23:17:45,887 INFO L226 Difference]: Without dead ends: 2450 [2024-10-10 23:17:45,888 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 [2024-10-10 23:17:45,889 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 179 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:45,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 157 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:17:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2024-10-10 23:17:45,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2449. [2024-10-10 23:17:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2449 states, 2448 states have (on average 1.2340686274509804) internal successors, (3021), 2448 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3021 transitions. [2024-10-10 23:17:45,923 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3021 transitions. Word has length 242 [2024-10-10 23:17:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:45,926 INFO L471 AbstractCegarLoop]: Abstraction has 2449 states and 3021 transitions. [2024-10-10 23:17:45,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3021 transitions. [2024-10-10 23:17:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-10-10 23:17:45,930 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:45,930 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:17:45,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 23:17:45,930 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:45,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:45,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1848088881, now seen corresponding path program 1 times [2024-10-10 23:17:45,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:45,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861286706] [2024-10-10 23:17:45,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:46,143 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-10 23:17:46,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:46,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861286706] [2024-10-10 23:17:46,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861286706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:46,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:46,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:46,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891630222] [2024-10-10 23:17:46,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:46,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:46,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:46,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:46,145 INFO L87 Difference]: Start difference. First operand 2449 states and 3021 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:46,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:46,840 INFO L93 Difference]: Finished difference Result 5637 states and 7016 transitions. [2024-10-10 23:17:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:46,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 279 [2024-10-10 23:17:46,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:46,849 INFO L225 Difference]: With dead ends: 5637 [2024-10-10 23:17:46,850 INFO L226 Difference]: Without dead ends: 3189 [2024-10-10 23:17:46,852 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 [2024-10-10 23:17:46,853 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 140 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:46,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 375 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:17:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2024-10-10 23:17:46,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 2629. [2024-10-10 23:17:46,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2629 states, 2628 states have (on average 1.22869101978691) internal successors, (3229), 2628 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:46,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2629 states to 2629 states and 3229 transitions. [2024-10-10 23:17:46,890 INFO L78 Accepts]: Start accepts. Automaton has 2629 states and 3229 transitions. Word has length 279 [2024-10-10 23:17:46,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:46,891 INFO L471 AbstractCegarLoop]: Abstraction has 2629 states and 3229 transitions. [2024-10-10 23:17:46,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:46,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2629 states and 3229 transitions. [2024-10-10 23:17:46,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-10-10 23:17:46,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:46,895 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:46,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-10 23:17:46,895 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:46,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:46,895 INFO L85 PathProgramCache]: Analyzing trace with hash 796707962, now seen corresponding path program 1 times [2024-10-10 23:17:46,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:46,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336678390] [2024-10-10 23:17:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:46,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:47,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:47,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336678390] [2024-10-10 23:17:47,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336678390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:47,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:47,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:47,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537524181] [2024-10-10 23:17:47,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:47,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:17:47,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:47,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:17:47,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:17:47,155 INFO L87 Difference]: Start difference. First operand 2629 states and 3229 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:48,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:48,148 INFO L93 Difference]: Finished difference Result 8041 states and 9929 transitions. [2024-10-10 23:17:48,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:17:48,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2024-10-10 23:17:48,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:48,160 INFO L225 Difference]: With dead ends: 8041 [2024-10-10 23:17:48,161 INFO L226 Difference]: Without dead ends: 5413 [2024-10-10 23:17:48,164 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 [2024-10-10 23:17:48,164 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 230 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:48,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 88 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 23:17:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5413 states. [2024-10-10 23:17:48,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5413 to 5226. [2024-10-10 23:17:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5226 states, 5225 states have (on average 1.2086124401913876) internal successors, (6315), 5225 states have internal predecessors, (6315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:48,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5226 states to 5226 states and 6315 transitions. [2024-10-10 23:17:48,222 INFO L78 Accepts]: Start accepts. Automaton has 5226 states and 6315 transitions. Word has length 320 [2024-10-10 23:17:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:48,222 INFO L471 AbstractCegarLoop]: Abstraction has 5226 states and 6315 transitions. [2024-10-10 23:17:48,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5226 states and 6315 transitions. [2024-10-10 23:17:48,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-10-10 23:17:48,228 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:48,229 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-10 23:17:48,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-10 23:17:48,229 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:48,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:48,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1974787430, now seen corresponding path program 1 times [2024-10-10 23:17:48,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:48,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739719199] [2024-10-10 23:17:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:48,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-10 23:17:48,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:48,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739719199] [2024-10-10 23:17:48,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739719199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:48,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:48,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:48,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146945484] [2024-10-10 23:17:48,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:48,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:48,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:48,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:48,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:48,399 INFO L87 Difference]: Start difference. First operand 5226 states and 6315 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:48,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:48,895 INFO L93 Difference]: Finished difference Result 10080 states and 12246 transitions. [2024-10-10 23:17:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:48,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 366 [2024-10-10 23:17:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:48,911 INFO L225 Difference]: With dead ends: 10080 [2024-10-10 23:17:48,911 INFO L226 Difference]: Without dead ends: 5223 [2024-10-10 23:17:48,916 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 [2024-10-10 23:17:48,918 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 151 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:48,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 301 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:17:48,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5223 states. [2024-10-10 23:17:48,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5223 to 5222. [2024-10-10 23:17:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 5221 states have (on average 1.1721892357785866) internal successors, (6120), 5221 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 6120 transitions. [2024-10-10 23:17:48,984 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 6120 transitions. Word has length 366 [2024-10-10 23:17:48,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:48,985 INFO L471 AbstractCegarLoop]: Abstraction has 5222 states and 6120 transitions. [2024-10-10 23:17:48,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:48,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 6120 transitions. [2024-10-10 23:17:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-10-10 23:17:48,993 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:48,994 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-10 23:17:48,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 23:17:48,994 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:48,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:48,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1817375643, now seen corresponding path program 1 times [2024-10-10 23:17:48,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:48,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958809188] [2024-10-10 23:17:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:48,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-10 23:17:49,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:49,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958809188] [2024-10-10 23:17:49,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958809188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:49,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:49,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:49,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395812113] [2024-10-10 23:17:49,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:49,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:49,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:49,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:49,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:49,237 INFO L87 Difference]: Start difference. First operand 5222 states and 6120 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:49,863 INFO L93 Difference]: Finished difference Result 11740 states and 13888 transitions. [2024-10-10 23:17:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:49,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 371 [2024-10-10 23:17:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:49,879 INFO L225 Difference]: With dead ends: 11740 [2024-10-10 23:17:49,879 INFO L226 Difference]: Without dead ends: 6887 [2024-10-10 23:17:49,885 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 [2024-10-10 23:17:49,885 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 118 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:49,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 359 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:17:49,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6887 states. [2024-10-10 23:17:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6887 to 6699. [2024-10-10 23:17:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.1576590026873694) internal successors, (7754), 6698 states have internal predecessors, (7754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 7754 transitions. [2024-10-10 23:17:49,982 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 7754 transitions. Word has length 371 [2024-10-10 23:17:49,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:49,982 INFO L471 AbstractCegarLoop]: Abstraction has 6699 states and 7754 transitions. [2024-10-10 23:17:49,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:49,983 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 7754 transitions. [2024-10-10 23:17:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-10-10 23:17:49,990 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:49,991 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2024-10-10 23:17:49,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-10 23:17:49,991 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:49,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:49,991 INFO L85 PathProgramCache]: Analyzing trace with hash -307645007, now seen corresponding path program 1 times [2024-10-10 23:17:49,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:49,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427199931] [2024-10-10 23:17:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:49,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-10-10 23:17:50,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:50,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427199931] [2024-10-10 23:17:50,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427199931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:50,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:50,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:50,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038857748] [2024-10-10 23:17:50,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:50,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:50,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:50,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:50,148 INFO L87 Difference]: Start difference. First operand 6699 states and 7754 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:50,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:50,707 INFO L93 Difference]: Finished difference Result 16526 states and 19322 transitions. [2024-10-10 23:17:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:50,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 385 [2024-10-10 23:17:50,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:50,733 INFO L225 Difference]: With dead ends: 16526 [2024-10-10 23:17:50,733 INFO L226 Difference]: Without dead ends: 10196 [2024-10-10 23:17:50,740 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 [2024-10-10 23:17:50,741 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 157 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:50,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 128 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:17:50,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10196 states. [2024-10-10 23:17:50,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10196 to 9826. [2024-10-10 23:17:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9826 states, 9825 states have (on average 1.1501272264631044) internal successors, (11300), 9825 states have internal predecessors, (11300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9826 states to 9826 states and 11300 transitions. [2024-10-10 23:17:50,849 INFO L78 Accepts]: Start accepts. Automaton has 9826 states and 11300 transitions. Word has length 385 [2024-10-10 23:17:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:50,849 INFO L471 AbstractCegarLoop]: Abstraction has 9826 states and 11300 transitions. [2024-10-10 23:17:50,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:50,850 INFO L276 IsEmpty]: Start isEmpty. Operand 9826 states and 11300 transitions. [2024-10-10 23:17:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-10-10 23:17:50,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:50,858 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-10 23:17:50,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-10 23:17:50,858 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:50,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1185768682, now seen corresponding path program 1 times [2024-10-10 23:17:50,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:50,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762133487] [2024-10-10 23:17:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:50,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-10 23:17:51,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:51,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762133487] [2024-10-10 23:17:51,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762133487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:51,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:51,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:51,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737198618] [2024-10-10 23:17:51,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:51,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:51,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:51,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:51,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:51,156 INFO L87 Difference]: Start difference. First operand 9826 states and 11300 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:51,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:51,821 INFO L93 Difference]: Finished difference Result 21124 states and 24423 transitions. [2024-10-10 23:17:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:51,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 400 [2024-10-10 23:17:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:51,838 INFO L225 Difference]: With dead ends: 21124 [2024-10-10 23:17:51,838 INFO L226 Difference]: Without dead ends: 11667 [2024-10-10 23:17:51,847 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 [2024-10-10 23:17:51,848 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 129 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:51,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 75 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:17:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11667 states. [2024-10-10 23:17:51,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11667 to 11294. [2024-10-10 23:17:51,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11294 states, 11293 states have (on average 1.1512441335340475) internal successors, (13001), 11293 states have internal predecessors, (13001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11294 states to 11294 states and 13001 transitions. [2024-10-10 23:17:52,001 INFO L78 Accepts]: Start accepts. Automaton has 11294 states and 13001 transitions. Word has length 400 [2024-10-10 23:17:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:52,002 INFO L471 AbstractCegarLoop]: Abstraction has 11294 states and 13001 transitions. [2024-10-10 23:17:52,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 11294 states and 13001 transitions. [2024-10-10 23:17:52,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-10-10 23:17:52,009 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:52,010 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-10 23:17:52,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-10 23:17:52,010 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:52,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:52,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1624432320, now seen corresponding path program 1 times [2024-10-10 23:17:52,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:52,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655208750] [2024-10-10 23:17:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:52,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 490 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:52,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655208750] [2024-10-10 23:17:52,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655208750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:52,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:52,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 23:17:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388142081] [2024-10-10 23:17:52,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:52,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:17:52,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:52,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:17:52,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:17:52,610 INFO L87 Difference]: Start difference. First operand 11294 states and 13001 transitions. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:53,554 INFO L93 Difference]: Finished difference Result 26117 states and 30098 transitions. [2024-10-10 23:17:53,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:17:53,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 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 401 [2024-10-10 23:17:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:53,573 INFO L225 Difference]: With dead ends: 26117 [2024-10-10 23:17:53,573 INFO L226 Difference]: Without dead ends: 15192 [2024-10-10 23:17:53,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:17:53,580 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 190 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:53,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 168 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 23:17:53,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15192 states. [2024-10-10 23:17:53,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15192 to 13712. [2024-10-10 23:17:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13712 states, 13711 states have (on average 1.1468893589089053) internal successors, (15725), 13711 states have internal predecessors, (15725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13712 states to 13712 states and 15725 transitions. [2024-10-10 23:17:53,733 INFO L78 Accepts]: Start accepts. Automaton has 13712 states and 15725 transitions. Word has length 401 [2024-10-10 23:17:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:53,733 INFO L471 AbstractCegarLoop]: Abstraction has 13712 states and 15725 transitions. [2024-10-10 23:17:53,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 13712 states and 15725 transitions. [2024-10-10 23:17:53,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-10-10 23:17:53,743 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:53,743 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-10 23:17:53,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-10 23:17:53,744 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:53,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:53,744 INFO L85 PathProgramCache]: Analyzing trace with hash 673571335, now seen corresponding path program 1 times [2024-10-10 23:17:53,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:53,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152441157] [2024-10-10 23:17:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:53,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 176 proven. 203 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-10 23:17:54,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:54,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152441157] [2024-10-10 23:17:54,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152441157] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:17:54,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126137597] [2024-10-10 23:17:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:54,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:17:54,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:17:54,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:17:54,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 23:17:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:54,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:17:54,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:17:54,578 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-10 23:17:54,579 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:17:54,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126137597] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:54,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:17:54,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:17:54,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543142922] [2024-10-10 23:17:54,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:54,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:17:54,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:54,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:17:54,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:17:54,580 INFO L87 Difference]: Start difference. First operand 13712 states and 15725 transitions. Second operand has 4 states, 4 states have (on average 88.25) 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) [2024-10-10 23:17:55,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:55,626 INFO L93 Difference]: Finished difference Result 32406 states and 37377 transitions. [2024-10-10 23:17:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:17:55,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.25) 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 411 [2024-10-10 23:17:55,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:55,651 INFO L225 Difference]: With dead ends: 32406 [2024-10-10 23:17:55,651 INFO L226 Difference]: Without dead ends: 19063 [2024-10-10 23:17:55,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:17:55,660 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 202 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:55,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 107 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 23:17:55,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19063 states. [2024-10-10 23:17:55,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19063 to 19051. [2024-10-10 23:17:55,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19051 states, 19050 states have (on average 1.1395275590551182) internal successors, (21708), 19050 states have internal predecessors, (21708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:55,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19051 states to 19051 states and 21708 transitions. [2024-10-10 23:17:55,837 INFO L78 Accepts]: Start accepts. Automaton has 19051 states and 21708 transitions. Word has length 411 [2024-10-10 23:17:55,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:55,837 INFO L471 AbstractCegarLoop]: Abstraction has 19051 states and 21708 transitions. [2024-10-10 23:17:55,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) 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) [2024-10-10 23:17:55,837 INFO L276 IsEmpty]: Start isEmpty. Operand 19051 states and 21708 transitions. [2024-10-10 23:17:55,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-10-10 23:17:55,854 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:55,854 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:55,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 23:17:56,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-10 23:17:56,056 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:56,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1601492279, now seen corresponding path program 1 times [2024-10-10 23:17:56,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:56,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887719231] [2024-10-10 23:17:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:56,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-10-10 23:17:56,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:56,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887719231] [2024-10-10 23:17:56,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887719231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:56,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:56,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:56,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467471429] [2024-10-10 23:17:56,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:56,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:56,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:56,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:56,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:56,328 INFO L87 Difference]: Start difference. First operand 19051 states and 21708 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:57,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:57,006 INFO L93 Difference]: Finished difference Result 39572 states and 45096 transitions. [2024-10-10 23:17:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:57,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 499 [2024-10-10 23:17:57,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:57,028 INFO L225 Difference]: With dead ends: 39572 [2024-10-10 23:17:57,029 INFO L226 Difference]: Without dead ends: 19046 [2024-10-10 23:17:57,045 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 [2024-10-10 23:17:57,046 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 196 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:57,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 357 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:17:57,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19046 states. [2024-10-10 23:17:57,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19046 to 18302. [2024-10-10 23:17:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18302 states, 18301 states have (on average 1.1157313807988634) internal successors, (20419), 18301 states have internal predecessors, (20419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18302 states to 18302 states and 20419 transitions. [2024-10-10 23:17:57,238 INFO L78 Accepts]: Start accepts. Automaton has 18302 states and 20419 transitions. Word has length 499 [2024-10-10 23:17:57,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:57,239 INFO L471 AbstractCegarLoop]: Abstraction has 18302 states and 20419 transitions. [2024-10-10 23:17:57,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 18302 states and 20419 transitions. [2024-10-10 23:17:57,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-10-10 23:17:57,255 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:57,255 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:57,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-10 23:17:57,256 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:57,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:57,256 INFO L85 PathProgramCache]: Analyzing trace with hash 946498037, now seen corresponding path program 1 times [2024-10-10 23:17:57,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:57,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516752507] [2024-10-10 23:17:57,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:57,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 447 proven. 85 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-10-10 23:17:57,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:57,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516752507] [2024-10-10 23:17:57,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516752507] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:17:57,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144793609] [2024-10-10 23:17:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:57,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:17:57,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:17:57,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:17:57,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 23:17:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:57,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:17:57,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:17:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-10-10 23:17:58,174 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:17:58,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144793609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:58,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:17:58,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:17:58,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532195964] [2024-10-10 23:17:58,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:58,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:58,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:58,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:58,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:17:58,176 INFO L87 Difference]: Start difference. First operand 18302 states and 20419 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:58,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:58,640 INFO L93 Difference]: Finished difference Result 37161 states and 41450 transitions. [2024-10-10 23:17:58,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:58,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 506 [2024-10-10 23:17:58,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:58,657 INFO L225 Difference]: With dead ends: 37161 [2024-10-10 23:17:58,657 INFO L226 Difference]: Without dead ends: 19228 [2024-10-10 23:17:58,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:17:58,668 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 82 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:58,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 160 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:17:58,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19228 states. [2024-10-10 23:17:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19228 to 18854. [2024-10-10 23:17:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18854 states, 18853 states have (on average 1.1102742269134886) internal successors, (20932), 18853 states have internal predecessors, (20932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:58,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18854 states to 18854 states and 20932 transitions. [2024-10-10 23:17:58,825 INFO L78 Accepts]: Start accepts. Automaton has 18854 states and 20932 transitions. Word has length 506 [2024-10-10 23:17:58,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:58,825 INFO L471 AbstractCegarLoop]: Abstraction has 18854 states and 20932 transitions. [2024-10-10 23:17:58,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 18854 states and 20932 transitions. [2024-10-10 23:17:58,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2024-10-10 23:17:58,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:58,838 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:58,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 23:17:59,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-10 23:17:59,039 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:59,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:59,039 INFO L85 PathProgramCache]: Analyzing trace with hash -594032100, now seen corresponding path program 1 times [2024-10-10 23:17:59,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:59,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410776365] [2024-10-10 23:17:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:59,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 508 proven. 24 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-10-10 23:17:59,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:59,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410776365] [2024-10-10 23:17:59,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410776365] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:17:59,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875017723] [2024-10-10 23:17:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:59,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:17:59,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:17:59,530 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:17:59,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 23:17:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:59,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:17:59,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:17:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-10-10 23:17:59,890 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:17:59,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875017723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:59,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:17:59,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-10 23:17:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003034355] [2024-10-10 23:17:59,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:59,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:17:59,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:17:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:17:59,892 INFO L87 Difference]: Start difference. First operand 18854 states and 20932 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:00,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:00,724 INFO L93 Difference]: Finished difference Result 39729 states and 44006 transitions. [2024-10-10 23:18:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:00,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 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 507 [2024-10-10 23:18:00,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:00,746 INFO L225 Difference]: With dead ends: 39729 [2024-10-10 23:18:00,746 INFO L226 Difference]: Without dead ends: 21244 [2024-10-10 23:18:00,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:18:00,760 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 274 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:00,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 173 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:18:00,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21244 states. [2024-10-10 23:18:00,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21244 to 18108. [2024-10-10 23:18:00,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18108 states, 18107 states have (on average 1.1062020213177224) internal successors, (20030), 18107 states have internal predecessors, (20030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18108 states to 18108 states and 20030 transitions. [2024-10-10 23:18:01,007 INFO L78 Accepts]: Start accepts. Automaton has 18108 states and 20030 transitions. Word has length 507 [2024-10-10 23:18:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:01,008 INFO L471 AbstractCegarLoop]: Abstraction has 18108 states and 20030 transitions. [2024-10-10 23:18:01,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:01,008 INFO L276 IsEmpty]: Start isEmpty. Operand 18108 states and 20030 transitions. [2024-10-10 23:18:01,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-10-10 23:18:01,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:01,024 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:01,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 23:18:01,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:01,225 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:01,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:01,225 INFO L85 PathProgramCache]: Analyzing trace with hash 537179088, now seen corresponding path program 1 times [2024-10-10 23:18:01,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:01,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411382531] [2024-10-10 23:18:01,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:01,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 572 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:02,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:02,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411382531] [2024-10-10 23:18:02,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411382531] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:02,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971104917] [2024-10-10 23:18:02,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:02,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:02,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:02,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:02,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 23:18:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:03,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:18:03,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-10-10 23:18:03,231 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:03,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971104917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:03,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:03,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-10-10 23:18:03,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811923830] [2024-10-10 23:18:03,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:03,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:03,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:18:03,233 INFO L87 Difference]: Start difference. First operand 18108 states and 20030 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) [2024-10-10 23:18:03,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:03,726 INFO L93 Difference]: Finished difference Result 37328 states and 41283 transitions. [2024-10-10 23:18:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:03,726 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 534 [2024-10-10 23:18:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:03,747 INFO L225 Difference]: With dead ends: 37328 [2024-10-10 23:18:03,747 INFO L226 Difference]: Without dead ends: 19589 [2024-10-10 23:18:03,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:18:03,761 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 91 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:03,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 339 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:18:03,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19589 states. [2024-10-10 23:18:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19589 to 18474. [2024-10-10 23:18:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18474 states, 18473 states have (on average 1.104747469279489) internal successors, (20408), 18473 states have internal predecessors, (20408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18474 states to 18474 states and 20408 transitions. [2024-10-10 23:18:03,924 INFO L78 Accepts]: Start accepts. Automaton has 18474 states and 20408 transitions. Word has length 534 [2024-10-10 23:18:03,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:03,924 INFO L471 AbstractCegarLoop]: Abstraction has 18474 states and 20408 transitions. [2024-10-10 23:18:03,924 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) [2024-10-10 23:18:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand 18474 states and 20408 transitions. [2024-10-10 23:18:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2024-10-10 23:18:03,936 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:03,936 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:03,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 23:18:04,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-10 23:18:04,137 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:04,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:04,138 INFO L85 PathProgramCache]: Analyzing trace with hash -801979553, now seen corresponding path program 1 times [2024-10-10 23:18:04,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:04,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935850961] [2024-10-10 23:18:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:04,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-10-10 23:18:04,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:04,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935850961] [2024-10-10 23:18:04,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935850961] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:04,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:04,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 23:18:04,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806043012] [2024-10-10 23:18:04,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:04,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:04,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:04,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:04,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:04,474 INFO L87 Difference]: Start difference. First operand 18474 states and 20408 transitions. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:05,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:05,326 INFO L93 Difference]: Finished difference Result 41563 states and 45923 transitions. [2024-10-10 23:18:05,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:05,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 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 539 [2024-10-10 23:18:05,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:05,349 INFO L225 Difference]: With dead ends: 41563 [2024-10-10 23:18:05,350 INFO L226 Difference]: Without dead ends: 23458 [2024-10-10 23:18:05,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:05,366 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 325 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:05,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 327 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:18:05,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23458 states. [2024-10-10 23:18:05,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23458 to 18283. [2024-10-10 23:18:05,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18283 states, 18282 states have (on average 1.102833388031944) internal successors, (20162), 18282 states have internal predecessors, (20162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18283 states to 18283 states and 20162 transitions. [2024-10-10 23:18:05,626 INFO L78 Accepts]: Start accepts. Automaton has 18283 states and 20162 transitions. Word has length 539 [2024-10-10 23:18:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:05,626 INFO L471 AbstractCegarLoop]: Abstraction has 18283 states and 20162 transitions. [2024-10-10 23:18:05,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:05,626 INFO L276 IsEmpty]: Start isEmpty. Operand 18283 states and 20162 transitions. [2024-10-10 23:18:05,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2024-10-10 23:18:05,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:05,640 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2024-10-10 23:18:05,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-10 23:18:05,640 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:05,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:05,640 INFO L85 PathProgramCache]: Analyzing trace with hash 322582844, now seen corresponding path program 1 times [2024-10-10 23:18:05,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:05,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254651087] [2024-10-10 23:18:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:05,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-10-10 23:18:05,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:05,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254651087] [2024-10-10 23:18:05,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254651087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:05,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:05,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:18:05,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391942509] [2024-10-10 23:18:05,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:05,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:05,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:05,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:05,906 INFO L87 Difference]: Start difference. First operand 18283 states and 20162 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:06,191 INFO L93 Difference]: Finished difference Result 35822 states and 39521 transitions. [2024-10-10 23:18:06,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:06,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 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 630 [2024-10-10 23:18:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:06,206 INFO L225 Difference]: With dead ends: 35822 [2024-10-10 23:18:06,207 INFO L226 Difference]: Without dead ends: 17908 [2024-10-10 23:18:06,216 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 [2024-10-10 23:18:06,217 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:06,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 32 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 23:18:06,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17908 states. [2024-10-10 23:18:06,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17908 to 17905. [2024-10-10 23:18:06,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17905 states, 17904 states have (on average 1.1019325290437891) internal successors, (19729), 17904 states have internal predecessors, (19729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17905 states to 17905 states and 19729 transitions. [2024-10-10 23:18:06,417 INFO L78 Accepts]: Start accepts. Automaton has 17905 states and 19729 transitions. Word has length 630 [2024-10-10 23:18:06,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:06,418 INFO L471 AbstractCegarLoop]: Abstraction has 17905 states and 19729 transitions. [2024-10-10 23:18:06,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 17905 states and 19729 transitions. [2024-10-10 23:18:06,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2024-10-10 23:18:06,431 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:06,431 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 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, 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] [2024-10-10 23:18:06,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-10 23:18:06,431 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:06,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:06,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1202330364, now seen corresponding path program 1 times [2024-10-10 23:18:06,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:06,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059745658] [2024-10-10 23:18:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:06,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1252 backedges. 914 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-10-10 23:18:06,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:06,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059745658] [2024-10-10 23:18:06,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059745658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:06,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:06,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:06,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411336601] [2024-10-10 23:18:06,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:06,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:06,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:06,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:06,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:06,767 INFO L87 Difference]: Start difference. First operand 17905 states and 19729 transitions. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:07,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:07,265 INFO L93 Difference]: Finished difference Result 38021 states and 41944 transitions. [2024-10-10 23:18:07,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:07,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 650 [2024-10-10 23:18:07,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:07,284 INFO L225 Difference]: With dead ends: 38021 [2024-10-10 23:18:07,285 INFO L226 Difference]: Without dead ends: 20485 [2024-10-10 23:18:07,295 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 [2024-10-10 23:18:07,296 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 123 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:07,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 72 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:18:07,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20485 states. [2024-10-10 23:18:07,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20485 to 18273. [2024-10-10 23:18:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18273 states, 18272 states have (on average 1.0996606830122593) internal successors, (20093), 18272 states have internal predecessors, (20093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18273 states to 18273 states and 20093 transitions. [2024-10-10 23:18:07,457 INFO L78 Accepts]: Start accepts. Automaton has 18273 states and 20093 transitions. Word has length 650 [2024-10-10 23:18:07,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:07,457 INFO L471 AbstractCegarLoop]: Abstraction has 18273 states and 20093 transitions. [2024-10-10 23:18:07,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 18273 states and 20093 transitions. [2024-10-10 23:18:07,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2024-10-10 23:18:07,470 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:07,470 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 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, 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] [2024-10-10 23:18:07,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-10 23:18:07,470 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:07,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:07,471 INFO L85 PathProgramCache]: Analyzing trace with hash 859869356, now seen corresponding path program 1 times [2024-10-10 23:18:07,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:07,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428316104] [2024-10-10 23:18:07,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:07,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:07,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2024-10-10 23:18:07,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:07,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428316104] [2024-10-10 23:18:07,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428316104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:07,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:07,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:07,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214230594] [2024-10-10 23:18:07,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:07,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:07,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:07,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:07,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:07,704 INFO L87 Difference]: Start difference. First operand 18273 states and 20093 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:08,181 INFO L93 Difference]: Finished difference Result 36727 states and 40389 transitions. [2024-10-10 23:18:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:08,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 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 651 [2024-10-10 23:18:08,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:08,202 INFO L225 Difference]: With dead ends: 36727 [2024-10-10 23:18:08,202 INFO L226 Difference]: Without dead ends: 18823 [2024-10-10 23:18:08,214 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 [2024-10-10 23:18:08,215 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 87 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:08,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 334 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:18:08,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18823 states. [2024-10-10 23:18:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18823 to 17165. [2024-10-10 23:18:08,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17165 states, 17164 states have (on average 1.0982871125611746) internal successors, (18851), 17164 states have internal predecessors, (18851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17165 states to 17165 states and 18851 transitions. [2024-10-10 23:18:08,377 INFO L78 Accepts]: Start accepts. Automaton has 17165 states and 18851 transitions. Word has length 651 [2024-10-10 23:18:08,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:08,378 INFO L471 AbstractCegarLoop]: Abstraction has 17165 states and 18851 transitions. [2024-10-10 23:18:08,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 17165 states and 18851 transitions. [2024-10-10 23:18:08,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2024-10-10 23:18:08,392 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:08,392 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 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] [2024-10-10 23:18:08,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-10 23:18:08,392 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:08,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:08,393 INFO L85 PathProgramCache]: Analyzing trace with hash -114731342, now seen corresponding path program 1 times [2024-10-10 23:18:08,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:08,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554298346] [2024-10-10 23:18:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:08,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1789 backedges. 1284 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2024-10-10 23:18:08,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:08,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554298346] [2024-10-10 23:18:08,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554298346] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:08,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:08,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:08,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44287169] [2024-10-10 23:18:08,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:08,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:08,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:08,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:08,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:08,690 INFO L87 Difference]: Start difference. First operand 17165 states and 18851 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:09,203 INFO L93 Difference]: Finished difference Result 34894 states and 38317 transitions. [2024-10-10 23:18:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:09,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 707 [2024-10-10 23:18:09,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:09,219 INFO L225 Difference]: With dead ends: 34894 [2024-10-10 23:18:09,219 INFO L226 Difference]: Without dead ends: 17914 [2024-10-10 23:18:09,227 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 [2024-10-10 23:18:09,228 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 99 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:09,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 157 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:18:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17914 states. [2024-10-10 23:18:09,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17914 to 17717. [2024-10-10 23:18:09,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17717 states, 17716 states have (on average 1.0899751636938362) internal successors, (19310), 17716 states have internal predecessors, (19310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17717 states to 17717 states and 19310 transitions. [2024-10-10 23:18:09,369 INFO L78 Accepts]: Start accepts. Automaton has 17717 states and 19310 transitions. Word has length 707 [2024-10-10 23:18:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:09,369 INFO L471 AbstractCegarLoop]: Abstraction has 17717 states and 19310 transitions. [2024-10-10 23:18:09,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 17717 states and 19310 transitions. [2024-10-10 23:18:09,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2024-10-10 23:18:09,382 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:09,382 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 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] [2024-10-10 23:18:09,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-10 23:18:09,382 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:09,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:09,383 INFO L85 PathProgramCache]: Analyzing trace with hash -49718677, now seen corresponding path program 1 times [2024-10-10 23:18:09,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:09,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485521705] [2024-10-10 23:18:09,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:09,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1789 backedges. 1236 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2024-10-10 23:18:09,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:09,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485521705] [2024-10-10 23:18:09,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485521705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:09,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:09,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:09,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355869204] [2024-10-10 23:18:09,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:09,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:09,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:09,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:09,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:09,820 INFO L87 Difference]: Start difference. First operand 17717 states and 19310 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:10,526 INFO L93 Difference]: Finished difference Result 40046 states and 43617 transitions. [2024-10-10 23:18:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:10,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 708 [2024-10-10 23:18:10,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:10,602 INFO L225 Difference]: With dead ends: 40046 [2024-10-10 23:18:10,602 INFO L226 Difference]: Without dead ends: 21594 [2024-10-10 23:18:10,609 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 [2024-10-10 23:18:10,609 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 219 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:10,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 65 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21594 states. [2024-10-10 23:18:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21594 to 16245. [2024-10-10 23:18:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16245 states, 16244 states have (on average 1.090002462447673) internal successors, (17706), 16244 states have internal predecessors, (17706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16245 states to 16245 states and 17706 transitions. [2024-10-10 23:18:10,832 INFO L78 Accepts]: Start accepts. Automaton has 16245 states and 17706 transitions. Word has length 708 [2024-10-10 23:18:10,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:10,832 INFO L471 AbstractCegarLoop]: Abstraction has 16245 states and 17706 transitions. [2024-10-10 23:18:10,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 16245 states and 17706 transitions. [2024-10-10 23:18:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2024-10-10 23:18:10,852 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:10,852 INFO L215 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:10,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-10 23:18:10,853 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:10,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:10,853 INFO L85 PathProgramCache]: Analyzing trace with hash 363550982, now seen corresponding path program 1 times [2024-10-10 23:18:10,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:10,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662100213] [2024-10-10 23:18:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:10,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 1095 proven. 0 refuted. 0 times theorem prover too weak. 1233 trivial. 0 not checked. [2024-10-10 23:18:11,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:11,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662100213] [2024-10-10 23:18:11,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662100213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:11,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:11,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:11,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691001396] [2024-10-10 23:18:11,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:11,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:11,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:11,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:11,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:11,520 INFO L87 Difference]: Start difference. First operand 16245 states and 17706 transitions. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:12,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:12,305 INFO L93 Difference]: Finished difference Result 33601 states and 36653 transitions. [2024-10-10 23:18:12,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:12,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 793 [2024-10-10 23:18:12,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:12,324 INFO L225 Difference]: With dead ends: 33601 [2024-10-10 23:18:12,324 INFO L226 Difference]: Without dead ends: 17725 [2024-10-10 23:18:12,336 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 [2024-10-10 23:18:12,336 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 245 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:12,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 97 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:18:12,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17725 states. [2024-10-10 23:18:12,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17725 to 16433. [2024-10-10 23:18:12,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16433 states, 16432 states have (on average 1.089155306718598) internal successors, (17897), 16432 states have internal predecessors, (17897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16433 states to 16433 states and 17897 transitions. [2024-10-10 23:18:12,471 INFO L78 Accepts]: Start accepts. Automaton has 16433 states and 17897 transitions. Word has length 793 [2024-10-10 23:18:12,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:12,471 INFO L471 AbstractCegarLoop]: Abstraction has 16433 states and 17897 transitions. [2024-10-10 23:18:12,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:12,472 INFO L276 IsEmpty]: Start isEmpty. Operand 16433 states and 17897 transitions. [2024-10-10 23:18:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2024-10-10 23:18:12,484 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:12,485 INFO L215 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:12,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-10 23:18:12,485 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:12,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:12,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2124725392, now seen corresponding path program 1 times [2024-10-10 23:18:12,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:12,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953193298] [2024-10-10 23:18:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:12,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2469 backedges. 1886 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-10-10 23:18:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:13,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953193298] [2024-10-10 23:18:13,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953193298] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:13,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:13,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 23:18:13,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933251064] [2024-10-10 23:18:13,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:13,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:13,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:13,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:13,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:13,160 INFO L87 Difference]: Start difference. First operand 16433 states and 17897 transitions. Second operand has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:13,953 INFO L93 Difference]: Finished difference Result 40060 states and 43629 transitions. [2024-10-10 23:18:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:13,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 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 859 [2024-10-10 23:18:13,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:13,974 INFO L225 Difference]: With dead ends: 40060 [2024-10-10 23:18:13,974 INFO L226 Difference]: Without dead ends: 23444 [2024-10-10 23:18:13,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:13,986 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 237 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:13,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 80 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:18:13,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23444 states. [2024-10-10 23:18:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23444 to 16622. [2024-10-10 23:18:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16622 states, 16621 states have (on average 1.0876601889176343) internal successors, (18078), 16621 states have internal predecessors, (18078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:14,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16622 states to 16622 states and 18078 transitions. [2024-10-10 23:18:14,160 INFO L78 Accepts]: Start accepts. Automaton has 16622 states and 18078 transitions. Word has length 859 [2024-10-10 23:18:14,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:14,160 INFO L471 AbstractCegarLoop]: Abstraction has 16622 states and 18078 transitions. [2024-10-10 23:18:14,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:14,160 INFO L276 IsEmpty]: Start isEmpty. Operand 16622 states and 18078 transitions. [2024-10-10 23:18:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2024-10-10 23:18:14,174 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:14,175 INFO L215 NwaCegarLoop]: trace histogram [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, 10, 10, 10, 10, 10, 10, 10, 10, 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, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:14,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-10 23:18:14,175 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:14,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash -566133121, now seen corresponding path program 1 times [2024-10-10 23:18:14,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:14,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590411327] [2024-10-10 23:18:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:14,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3855 backedges. 2290 proven. 830 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2024-10-10 23:18:15,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:15,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590411327] [2024-10-10 23:18:15,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590411327] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:15,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418143730] [2024-10-10 23:18:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:15,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:15,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:15,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:15,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 23:18:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:16,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:18:16,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3855 backedges. 2335 proven. 0 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-10-10 23:18:16,232 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:16,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418143730] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:16,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:16,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-10 23:18:16,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029681592] [2024-10-10 23:18:16,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:16,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:16,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:16,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:18:16,235 INFO L87 Difference]: Start difference. First operand 16622 states and 18078 transitions. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:16,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:16,665 INFO L93 Difference]: Finished difference Result 33439 states and 36394 transitions. [2024-10-10 23:18:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:16,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 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 1066 [2024-10-10 23:18:16,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:16,680 INFO L225 Difference]: With dead ends: 33439 [2024-10-10 23:18:16,681 INFO L226 Difference]: Without dead ends: 17186 [2024-10-10 23:18:16,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 1067 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:18:16,691 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 104 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:16,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 325 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:18:16,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17186 states. [2024-10-10 23:18:16,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17186 to 17178. [2024-10-10 23:18:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17178 states, 17177 states have (on average 1.0861617278919484) internal successors, (18657), 17177 states have internal predecessors, (18657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:16,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17178 states to 17178 states and 18657 transitions. [2024-10-10 23:18:16,831 INFO L78 Accepts]: Start accepts. Automaton has 17178 states and 18657 transitions. Word has length 1066 [2024-10-10 23:18:16,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:16,832 INFO L471 AbstractCegarLoop]: Abstraction has 17178 states and 18657 transitions. [2024-10-10 23:18:16,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand 17178 states and 18657 transitions. [2024-10-10 23:18:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2024-10-10 23:18:16,846 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:16,846 INFO L215 NwaCegarLoop]: trace histogram [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, 10, 10, 10, 10, 10, 10, 10, 10, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1] [2024-10-10 23:18:16,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 23:18:17,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-10 23:18:17,047 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:17,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash 20738098, now seen corresponding path program 1 times [2024-10-10 23:18:17,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:17,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996427980] [2024-10-10 23:18:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:17,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4049 backedges. 2161 proven. 0 refuted. 0 times theorem prover too weak. 1888 trivial. 0 not checked. [2024-10-10 23:18:17,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:17,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996427980] [2024-10-10 23:18:17,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996427980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:17,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:17,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:18:17,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716898505] [2024-10-10 23:18:17,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:17,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:17,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:17,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:17,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:17,571 INFO L87 Difference]: Start difference. First operand 17178 states and 18657 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:17,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:17,899 INFO L93 Difference]: Finished difference Result 33613 states and 36526 transitions. [2024-10-10 23:18:17,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:17,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 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 1131 [2024-10-10 23:18:17,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:17,913 INFO L225 Difference]: With dead ends: 33613 [2024-10-10 23:18:17,913 INFO L226 Difference]: Without dead ends: 16804 [2024-10-10 23:18:17,924 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 [2024-10-10 23:18:17,924 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:17,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 32 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 23:18:17,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16804 states. [2024-10-10 23:18:18,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16804 to 16804. [2024-10-10 23:18:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16804 states, 16803 states have (on average 1.0858180086889246) internal successors, (18245), 16803 states have internal predecessors, (18245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:18,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16804 states to 16804 states and 18245 transitions. [2024-10-10 23:18:18,080 INFO L78 Accepts]: Start accepts. Automaton has 16804 states and 18245 transitions. Word has length 1131 [2024-10-10 23:18:18,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:18,080 INFO L471 AbstractCegarLoop]: Abstraction has 16804 states and 18245 transitions. [2024-10-10 23:18:18,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:18,080 INFO L276 IsEmpty]: Start isEmpty. Operand 16804 states and 18245 transitions. [2024-10-10 23:18:18,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1156 [2024-10-10 23:18:18,096 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:18,096 INFO L215 NwaCegarLoop]: trace histogram [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, 10, 10, 10, 10, 10, 10, 10, 10, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:18,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-10 23:18:18,096 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:18,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:18,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1285839862, now seen corresponding path program 1 times [2024-10-10 23:18:18,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:18,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651337313] [2024-10-10 23:18:18,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:18,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4066 backedges. 1501 proven. 0 refuted. 0 times theorem prover too weak. 2565 trivial. 0 not checked. [2024-10-10 23:18:19,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:19,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651337313] [2024-10-10 23:18:19,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651337313] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:19,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:19,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:19,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107579638] [2024-10-10 23:18:19,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:19,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:19,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:19,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:19,409 INFO L87 Difference]: Start difference. First operand 16804 states and 18245 transitions. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:20,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:20,137 INFO L93 Difference]: Finished difference Result 33792 states and 36697 transitions. [2024-10-10 23:18:20,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:20,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 1155 [2024-10-10 23:18:20,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:20,153 INFO L225 Difference]: With dead ends: 33792 [2024-10-10 23:18:20,153 INFO L226 Difference]: Without dead ends: 17173 [2024-10-10 23:18:20,162 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 [2024-10-10 23:18:20,163 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 206 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:20,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 82 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17173 states. [2024-10-10 23:18:20,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17173 to 17172. [2024-10-10 23:18:20,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17172 states, 17171 states have (on average 1.0846194164579814) internal successors, (18624), 17171 states have internal predecessors, (18624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17172 states to 17172 states and 18624 transitions. [2024-10-10 23:18:20,304 INFO L78 Accepts]: Start accepts. Automaton has 17172 states and 18624 transitions. Word has length 1155 [2024-10-10 23:18:20,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:20,305 INFO L471 AbstractCegarLoop]: Abstraction has 17172 states and 18624 transitions. [2024-10-10 23:18:20,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 17172 states and 18624 transitions. [2024-10-10 23:18:20,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1194 [2024-10-10 23:18:20,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:20,320 INFO L215 NwaCegarLoop]: trace histogram [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, 10, 10, 10, 10, 10, 10, 10, 10, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:20,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-10 23:18:20,321 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:20,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:20,321 INFO L85 PathProgramCache]: Analyzing trace with hash -618852948, now seen corresponding path program 1 times [2024-10-10 23:18:20,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:20,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170342836] [2024-10-10 23:18:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:20,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:21,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4127 backedges. 2240 proven. 73 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2024-10-10 23:18:21,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:21,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170342836] [2024-10-10 23:18:21,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170342836] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:21,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677719222] [2024-10-10 23:18:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:21,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:21,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:21,622 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:21,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 23:18:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:21,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:18:21,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4127 backedges. 2598 proven. 0 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2024-10-10 23:18:22,008 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:22,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677719222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:22,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:22,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-10 23:18:22,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964016198] [2024-10-10 23:18:22,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:22,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:22,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:22,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:22,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:18:22,010 INFO L87 Difference]: Start difference. First operand 17172 states and 18624 transitions. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:22,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:22,490 INFO L93 Difference]: Finished difference Result 38586 states and 41862 transitions. [2024-10-10 23:18:22,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:22,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 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 1193 [2024-10-10 23:18:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:22,507 INFO L225 Difference]: With dead ends: 38586 [2024-10-10 23:18:22,507 INFO L226 Difference]: Without dead ends: 21783 [2024-10-10 23:18:22,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1193 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:18:22,517 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 77 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:22,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 312 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:18:22,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21783 states. [2024-10-10 23:18:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21783 to 17364. [2024-10-10 23:18:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17364 states, 17363 states have (on average 1.0794793526464321) internal successors, (18743), 17363 states have internal predecessors, (18743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:22,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17364 states to 17364 states and 18743 transitions. [2024-10-10 23:18:22,694 INFO L78 Accepts]: Start accepts. Automaton has 17364 states and 18743 transitions. Word has length 1193 [2024-10-10 23:18:22,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:22,694 INFO L471 AbstractCegarLoop]: Abstraction has 17364 states and 18743 transitions. [2024-10-10 23:18:22,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 17364 states and 18743 transitions. [2024-10-10 23:18:22,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1355 [2024-10-10 23:18:22,710 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:22,710 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:22,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 23:18:22,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:22,911 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:22,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:22,911 INFO L85 PathProgramCache]: Analyzing trace with hash -161019902, now seen corresponding path program 1 times [2024-10-10 23:18:22,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:22,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766383652] [2024-10-10 23:18:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:22,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:25,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6001 backedges. 3683 proven. 811 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2024-10-10 23:18:25,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:25,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766383652] [2024-10-10 23:18:25,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766383652] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:25,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783053249] [2024-10-10 23:18:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:25,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:25,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:25,751 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:25,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 23:18:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:26,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 23:18:26,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6001 backedges. 3704 proven. 0 refuted. 0 times theorem prover too weak. 2297 trivial. 0 not checked. [2024-10-10 23:18:26,241 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:26,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783053249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:26,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:26,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 23:18:26,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997408970] [2024-10-10 23:18:26,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:26,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:26,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:26,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:26,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:18:26,243 INFO L87 Difference]: Start difference. First operand 17364 states and 18743 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:26,666 INFO L93 Difference]: Finished difference Result 35101 states and 37887 transitions. [2024-10-10 23:18:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:26,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 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 1354 [2024-10-10 23:18:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:26,683 INFO L225 Difference]: With dead ends: 35101 [2024-10-10 23:18:26,683 INFO L226 Difference]: Without dead ends: 17738 [2024-10-10 23:18:26,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1361 GetRequests, 1356 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:18:26,694 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 98 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:26,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 338 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:18:26,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17738 states. [2024-10-10 23:18:26,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17738 to 17000. [2024-10-10 23:18:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17000 states, 16999 states have (on average 1.0775339725866226) internal successors, (18317), 16999 states have internal predecessors, (18317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17000 states to 17000 states and 18317 transitions. [2024-10-10 23:18:26,837 INFO L78 Accepts]: Start accepts. Automaton has 17000 states and 18317 transitions. Word has length 1354 [2024-10-10 23:18:26,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:26,838 INFO L471 AbstractCegarLoop]: Abstraction has 17000 states and 18317 transitions. [2024-10-10 23:18:26,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 17000 states and 18317 transitions. [2024-10-10 23:18:26,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1441 [2024-10-10 23:18:26,855 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:26,855 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:26,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 23:18:27,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:27,056 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:27,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:27,057 INFO L85 PathProgramCache]: Analyzing trace with hash -694936387, now seen corresponding path program 1 times [2024-10-10 23:18:27,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:27,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431858307] [2024-10-10 23:18:27,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:27,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6354 backedges. 3845 proven. 206 refuted. 0 times theorem prover too weak. 2303 trivial. 0 not checked. [2024-10-10 23:18:28,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431858307] [2024-10-10 23:18:28,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431858307] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001360238] [2024-10-10 23:18:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:28,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:28,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:28,657 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:28,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 23:18:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:28,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-10 23:18:28,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:31,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6354 backedges. 4220 proven. 282 refuted. 0 times theorem prover too weak. 1852 trivial. 0 not checked. [2024-10-10 23:18:31,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:18:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6354 backedges. 3750 proven. 323 refuted. 0 times theorem prover too weak. 2281 trivial. 0 not checked. [2024-10-10 23:18:33,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001360238] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:18:33,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:18:33,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 6] total 12 [2024-10-10 23:18:33,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868503694] [2024-10-10 23:18:33,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:18:33,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-10 23:18:33,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:33,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-10 23:18:33,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-10-10 23:18:33,847 INFO L87 Difference]: Start difference. First operand 17000 states and 18317 transitions. Second operand has 13 states, 13 states have (on average 62.23076923076923) internal successors, (809), 12 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:37,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:37,459 INFO L93 Difference]: Finished difference Result 26264 states and 28211 transitions. [2024-10-10 23:18:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-10 23:18:37,460 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 62.23076923076923) internal successors, (809), 12 states have internal predecessors, (809), 0 states have call successors, (0), 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 1440 [2024-10-10 23:18:37,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:37,461 INFO L225 Difference]: With dead ends: 26264 [2024-10-10 23:18:37,461 INFO L226 Difference]: Without dead ends: 0 [2024-10-10 23:18:37,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2900 GetRequests, 2871 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2024-10-10 23:18:37,470 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 1539 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 7091 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 7372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 7091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:37,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 132 Invalid, 7372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 7091 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-10 23:18:37,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-10 23:18:37,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-10 23:18:37,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-10 23:18:37,471 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1440 [2024-10-10 23:18:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:37,471 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-10 23:18:37,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.23076923076923) internal successors, (809), 12 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:37,472 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-10 23:18:37,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-10 23:18:37,474 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-10 23:18:37,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-10 23:18:37,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-10 23:18:37,677 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:37,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-10 23:18:56,534 WARN L286 SmtUtils]: Spent 18.85s on a formula simplification. DAG size of input: 569 DAG size of output: 613 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-10-10 23:18:58,320 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-10 23:18:58,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 11:18:58 BoogieIcfgContainer [2024-10-10 23:18:58,343 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-10 23:18:58,343 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-10 23:18:58,343 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-10 23:18:58,343 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-10 23:18:58,344 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:17:41" (3/4) ... [2024-10-10 23:18:58,345 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-10 23:18:58,360 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-10 23:18:58,361 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-10 23:18:58,362 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-10 23:18:58,363 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-10 23:18:58,499 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-10 23:18:58,499 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-10 23:18:58,500 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-10 23:18:58,501 INFO L158 Benchmark]: Toolchain (without parser) took 79384.16ms. Allocated memory was 169.9MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 99.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 919.5MB. Max. memory is 16.1GB. [2024-10-10 23:18:58,501 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 100.7MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-10 23:18:58,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.80ms. Allocated memory is still 169.9MB. Free memory was 99.3MB in the beginning and 99.5MB in the end (delta: -113.4kB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2024-10-10 23:18:58,502 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.81ms. Allocated memory is still 169.9MB. Free memory was 99.5MB in the beginning and 82.1MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-10 23:18:58,502 INFO L158 Benchmark]: Boogie Preprocessor took 130.84ms. Allocated memory is still 169.9MB. Free memory was 82.1MB in the beginning and 56.8MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-10 23:18:58,503 INFO L158 Benchmark]: RCFGBuilder took 1371.67ms. Allocated memory was 169.9MB in the beginning and 245.4MB in the end (delta: 75.5MB). Free memory was 56.8MB in the beginning and 177.7MB in the end (delta: -120.9MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2024-10-10 23:18:58,503 INFO L158 Benchmark]: TraceAbstraction took 77113.57ms. Allocated memory was 245.4MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 176.7MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2024-10-10 23:18:58,504 INFO L158 Benchmark]: Witness Printer took 156.47ms. Allocated memory is still 2.6GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-10 23:18:58,505 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 100.7MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 506.80ms. Allocated memory is still 169.9MB. Free memory was 99.3MB in the beginning and 99.5MB in the end (delta: -113.4kB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.81ms. Allocated memory is still 169.9MB. Free memory was 99.5MB in the beginning and 82.1MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 130.84ms. Allocated memory is still 169.9MB. Free memory was 82.1MB in the beginning and 56.8MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1371.67ms. Allocated memory was 169.9MB in the beginning and 245.4MB in the end (delta: 75.5MB). Free memory was 56.8MB in the beginning and 177.7MB in the end (delta: -120.9MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. * TraceAbstraction took 77113.57ms. Allocated memory was 245.4MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 176.7MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 156.47ms. Allocated memory is still 2.6GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 199]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.4s, OverallIterations: 32, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 23.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6396 SdHoareTripleChecker+Valid, 20.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6396 mSDsluCounter, 6316 SdHoareTripleChecker+Invalid, 16.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 782 mSDsCounter, 3225 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27143 IncrementalHoareTripleChecker+Invalid, 30368 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3225 mSolverCounterUnsat, 5534 mSDtfsCounter, 27143 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8575 GetRequests, 8479 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19051occurred in iteration=14, InterpolantAutomatonStates: 124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 32 MinimizatonAttempts, 36617 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 22.9s InterpolantComputationTime, 25656 NumberOfCodeBlocks, 25656 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 27055 ConstructedInterpolants, 0 QuantifiedInterpolants, 84485 SizeOfPredicates, 14 NumberOfNonLiveVariables, 8894 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 41 InterpolantComputations, 31 PerfectInterpolantSequences, 74862/78009 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1044]: Loop Invariant Derived loop invariant: ((((((((((((((((((((a25 <= 10) && (a23 <= 138)) && (a4 == 1)) && (0 <= ((long long) a23 + 42))) || ((((a23 <= 138) && (0 <= ((long long) 41 + a23))) && (a4 == 1)) && (130 <= a29))) || ((((((a29 <= 140) && (a23 <= 312)) || (a23 < 139)) && (a4 == 1)) && (a25 <= 9)) && (a8 == 15))) || (((((a25 == 12) && (a23 <= 306)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || ((((((((long long) a23 + 43) <= 0) && (a25 == 12)) && (a29 <= 274)) && (a3 == 1)) && (a8 == 15)) && (247 <= a29))) || (((((a29 <= 245) && (a23 <= 138)) && (a4 == 1)) && (0 <= ((long long) a23 + 42))) && (130 <= a29))) || (((((a23 <= 600000) && (a3 == 1)) && (a4 == 1)) && (a8 == 15)) && (13 <= a25))) || ((((a25 == 12) && ((((a29 <= 274) && (247 <= a29)) && (a4 <= 0)) || (((a29 <= 275) && (261 <= a29)) && (a4 <= 0)))) && (a3 == 1)) && (a8 == 15))) || ((((((((long long) a23 + 55) <= 0) && (a25 == 12)) && (a29 <= 274)) && (a3 == 1)) && (a8 == 15)) && (a4 <= 0))) || ((((((a23 <= 600000) && (141 <= a29)) && (a3 == 1)) && (0 <= ((long long) 41 + a23))) && (a4 == 1)) && (a8 == 15))) || (((((((long long) a23 + 43) <= 0) && (a29 <= 140)) && (a3 == 1)) && (a4 != 1)) && (a8 == 15))) || ((((((a29 <= 245) && (141 <= a29)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15)) && (a25 == 10))) || ((((((a29 <= 234) && (141 <= a29)) && (a25 == 9)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || ((((((long long) a23 + 43) <= 0) && (a8 <= 15)) && (a4 == 1)) && (a25 == 10))) || (((((a25 == 12) && (((long long) 28470 + a29) <= 0)) && (a23 <= 138)) && (a4 == 1)) && (0 <= ((long long) a23 + 42)))) || (((((a23 <= 600000) && (a3 == 1)) && (a4 == 1)) && (a8 == 15)) && (a25 == 10))) || (((a3 == 1) && (a8 == 15)) && ((((((long long) a23 + 43) <= 0) && (261 <= a29)) && (a25 <= 9)) || ((((((long long) 284336 + a23) <= 0) && (a29 <= 274)) && (247 <= a29)) && (13 <= a25))))) RESULT: Ultimate proved your program to be correct! [2024-10-10 23:18:58,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE