./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label04.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 33de5d7f20015c0808aeb1de8a96a544518a9ee4634466bd76c0c961f4a657cf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 22:05:33,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 22:05:33,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 22:05:33,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 22:05:33,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 22:05:33,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 22:05:33,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 22:05:33,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 22:05:33,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 22:05:33,154 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 22:05:33,154 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 22:05:33,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 22:05:33,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 22:05:33,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 22:05:33,159 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 22:05:33,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 22:05:33,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 22:05:33,161 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 22:05:33,161 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 22:05:33,162 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 22:05:33,162 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 22:05:33,162 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 22:05:33,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 22:05:33,163 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 22:05:33,163 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 22:05:33,163 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 22:05:33,163 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 22:05:33,163 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 22:05:33,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 22:05:33,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 22:05:33,164 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 22:05:33,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 22:05:33,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:05:33,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 22:05:33,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 22:05:33,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 22:05:33,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 22:05:33,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 22:05:33,166 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 22:05:33,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 22:05:33,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 22:05:33,167 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 22:05:33,167 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33de5d7f20015c0808aeb1de8a96a544518a9ee4634466bd76c0c961f4a657cf [2024-11-21 22:05:33,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 22:05:33,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 22:05:33,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 22:05:33,377 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 22:05:33,378 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 22:05:33,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label04.c [2024-11-21 22:05:34,594 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 22:05:34,927 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 22:05:34,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label04.c [2024-11-21 22:05:34,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d63d2881/26ed8b05a0044527848abf722deba0e8/FLAG13e88712d [2024-11-21 22:05:35,203 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d63d2881/26ed8b05a0044527848abf722deba0e8 [2024-11-21 22:05:35,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 22:05:35,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 22:05:35,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 22:05:35,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 22:05:35,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 22:05:35,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:05:35" (1/1) ... [2024-11-21 22:05:35,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d22e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:35, skipping insertion in model container [2024-11-21 22:05:35,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:05:35" (1/1) ... [2024-11-21 22:05:35,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 22:05:35,502 WARN L250 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/Problem12_label04.c[7422,7435] [2024-11-21 22:05:36,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:05:36,116 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 22:05:36,139 WARN L250 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/Problem12_label04.c[7422,7435] [2024-11-21 22:05:36,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:05:36,435 INFO L204 MainTranslator]: Completed translation [2024-11-21 22:05:36,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36 WrapperNode [2024-11-21 22:05:36,436 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 22:05:36,437 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 22:05:36,437 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 22:05:36,437 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 22:05:36,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (1/1) ... [2024-11-21 22:05:36,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (1/1) ... [2024-11-21 22:05:36,699 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-21 22:05:36,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 22:05:36,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 22:05:36,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 22:05:36,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 22:05:36,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (1/1) ... [2024-11-21 22:05:36,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (1/1) ... [2024-11-21 22:05:36,742 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (1/1) ... [2024-11-21 22:05:36,939 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-21 22:05:36,939 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (1/1) ... [2024-11-21 22:05:36,940 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (1/1) ... [2024-11-21 22:05:37,045 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (1/1) ... [2024-11-21 22:05:37,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (1/1) ... [2024-11-21 22:05:37,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (1/1) ... [2024-11-21 22:05:37,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (1/1) ... [2024-11-21 22:05:37,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 22:05:37,193 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 22:05:37,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 22:05:37,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 22:05:37,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (1/1) ... [2024-11-21 22:05:37,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:05:37,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:05:37,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-21 22:05:37,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-21 22:05:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 22:05:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 22:05:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 22:05:37,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 22:05:37,392 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 22:05:37,394 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 22:05:40,486 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-21 22:05:40,486 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 22:05:40,509 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 22:05:40,510 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 22:05:40,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:05:40 BoogieIcfgContainer [2024-11-21 22:05:40,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 22:05:40,512 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 22:05:40,512 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 22:05:40,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 22:05:40,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:05:35" (1/3) ... [2024-11-21 22:05:40,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a4b102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:05:40, skipping insertion in model container [2024-11-21 22:05:40,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:36" (2/3) ... [2024-11-21 22:05:40,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a4b102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:05:40, skipping insertion in model container [2024-11-21 22:05:40,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:05:40" (3/3) ... [2024-11-21 22:05:40,518 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label04.c [2024-11-21 22:05:40,531 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 22:05:40,531 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 22:05:40,605 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 22:05:40,612 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;@5521c05c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 22:05:40,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 22:05:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-21 22:05:40,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:40,630 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] [2024-11-21 22:05:40,631 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:40,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash -634083006, now seen corresponding path program 1 times [2024-11-21 22:05:40,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:40,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493184565] [2024-11-21 22:05:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:40,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:05:41,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:41,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493184565] [2024-11-21 22:05:41,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493184565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:41,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:41,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:41,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593654466] [2024-11-21 22:05:41,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:41,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:05:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:41,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:05:41,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:05:41,110 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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) [2024-11-21 22:05:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:45,906 INFO L93 Difference]: Finished difference Result 3143 states and 6131 transitions. [2024-11-21 22:05:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:05:45,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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 [2024-11-21 22:05:45,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:45,942 INFO L225 Difference]: With dead ends: 3143 [2024-11-21 22:05:45,943 INFO L226 Difference]: Without dead ends: 2257 [2024-11-21 22:05:45,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:05:45,955 INFO L432 NwaCegarLoop]: 755 mSDtfsCounter, 2209 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5311 mSolverCounterSat, 1364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2209 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 6675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1364 IncrementalHoareTripleChecker+Valid, 5311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:45,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2209 Valid, 782 Invalid, 6675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1364 Valid, 5311 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-21 22:05:45,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2024-11-21 22:05:46,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2024-11-21 22:05:46,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.513741134751773) internal successors, (3415), 2256 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3415 transitions. [2024-11-21 22:05:46,046 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3415 transitions. Word has length 60 [2024-11-21 22:05:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:46,047 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 3415 transitions. [2024-11-21 22:05:46,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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) [2024-11-21 22:05:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3415 transitions. [2024-11-21 22:05:46,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-21 22:05:46,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:46,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:46,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 22:05:46,051 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:46,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:46,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1490791889, now seen corresponding path program 1 times [2024-11-21 22:05:46,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:46,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327938322] [2024-11-21 22:05:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:46,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:05:46,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:46,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327938322] [2024-11-21 22:05:46,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327938322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:46,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:46,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:46,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678704139] [2024-11-21 22:05:46,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:46,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:05:46,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:05:46,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:05:46,426 INFO L87 Difference]: Start difference. First operand 2257 states and 3415 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:49,589 INFO L93 Difference]: Finished difference Result 6051 states and 9520 transitions. [2024-11-21 22:05:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:05:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2024-11-21 22:05:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:49,600 INFO L225 Difference]: With dead ends: 6051 [2024-11-21 22:05:49,600 INFO L226 Difference]: Without dead ends: 3759 [2024-11-21 22:05:49,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:05:49,603 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 688 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3804 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 4468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:49,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 711 Invalid, 4468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3804 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-21 22:05:49,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2024-11-21 22:05:49,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2024-11-21 22:05:49,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.3304949441192124) internal successors, (5000), 3758 states have internal predecessors, (5000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5000 transitions. [2024-11-21 22:05:49,644 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5000 transitions. Word has length 131 [2024-11-21 22:05:49,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:49,644 INFO L471 AbstractCegarLoop]: Abstraction has 3759 states and 5000 transitions. [2024-11-21 22:05:49,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:49,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5000 transitions. [2024-11-21 22:05:49,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-21 22:05:49,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:49,648 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:49,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 22:05:49,648 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:49,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1998634511, now seen corresponding path program 1 times [2024-11-21 22:05:49,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:49,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835044028] [2024-11-21 22:05:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:49,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-21 22:05:50,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:50,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835044028] [2024-11-21 22:05:50,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835044028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:50,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:50,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988972628] [2024-11-21 22:05:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:50,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:05:50,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:05:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:05:50,033 INFO L87 Difference]: Start difference. First operand 3759 states and 5000 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:52,523 INFO L93 Difference]: Finished difference Result 9057 states and 12624 transitions. [2024-11-21 22:05:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:05:52,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 272 [2024-11-21 22:05:52,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:52,536 INFO L225 Difference]: With dead ends: 9057 [2024-11-21 22:05:52,536 INFO L226 Difference]: Without dead ends: 5263 [2024-11-21 22:05:52,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:05:52,543 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 850 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 3961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:52,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 324 Invalid, 3961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-21 22:05:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2024-11-21 22:05:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 5261. [2024-11-21 22:05:52,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.3241444866920151) internal successors, (6965), 5260 states have internal predecessors, (6965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6965 transitions. [2024-11-21 22:05:52,609 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6965 transitions. Word has length 272 [2024-11-21 22:05:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:52,611 INFO L471 AbstractCegarLoop]: Abstraction has 5261 states and 6965 transitions. [2024-11-21 22:05:52,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6965 transitions. [2024-11-21 22:05:52,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-21 22:05:52,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:52,616 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:52,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 22:05:52,616 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:52,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:52,618 INFO L85 PathProgramCache]: Analyzing trace with hash 771825102, now seen corresponding path program 1 times [2024-11-21 22:05:52,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218631131] [2024-11-21 22:05:52,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:52,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:05:52,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:52,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218631131] [2024-11-21 22:05:52,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218631131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:52,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:52,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:52,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085475823] [2024-11-21 22:05:52,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:52,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:52,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:52,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:52,799 INFO L87 Difference]: Start difference. First operand 5261 states and 6965 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:55,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:55,010 INFO L93 Difference]: Finished difference Result 15026 states and 20134 transitions. [2024-11-21 22:05:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:55,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2024-11-21 22:05:55,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:55,034 INFO L225 Difference]: With dead ends: 15026 [2024-11-21 22:05:55,035 INFO L226 Difference]: Without dead ends: 9767 [2024-11-21 22:05:55,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:55,045 INFO L432 NwaCegarLoop]: 1253 mSDtfsCounter, 676 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 3018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:55,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1260 Invalid, 3018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-21 22:05:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2024-11-21 22:05:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2024-11-21 22:05:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.2976653696498055) internal successors, (12673), 9766 states have internal predecessors, (12673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12673 transitions. [2024-11-21 22:05:55,178 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12673 transitions. Word has length 286 [2024-11-21 22:05:55,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:55,178 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 12673 transitions. [2024-11-21 22:05:55,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:55,179 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12673 transitions. [2024-11-21 22:05:55,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-21 22:05:55,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:55,182 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:55,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 22:05:55,183 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:55,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:55,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1552136296, now seen corresponding path program 1 times [2024-11-21 22:05:55,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:55,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200150130] [2024-11-21 22:05:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:55,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-21 22:05:55,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:55,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200150130] [2024-11-21 22:05:55,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200150130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:55,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:55,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:55,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435617793] [2024-11-21 22:05:55,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:55,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:55,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:55,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:55,668 INFO L87 Difference]: Start difference. First operand 9767 states and 12673 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:57,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:57,814 INFO L93 Difference]: Finished difference Result 26291 states and 34790 transitions. [2024-11-21 22:05:57,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:57,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2024-11-21 22:05:57,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:57,848 INFO L225 Difference]: With dead ends: 26291 [2024-11-21 22:05:57,849 INFO L226 Difference]: Without dead ends: 16526 [2024-11-21 22:05:57,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:57,862 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 793 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:57,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 203 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 2324 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-21 22:05:57,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2024-11-21 22:05:58,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 14273. [2024-11-21 22:05:58,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 14272 states have (on average 1.3457819506726458) internal successors, (19207), 14272 states have internal predecessors, (19207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:58,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 19207 transitions. [2024-11-21 22:05:58,096 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 19207 transitions. Word has length 290 [2024-11-21 22:05:58,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:58,096 INFO L471 AbstractCegarLoop]: Abstraction has 14273 states and 19207 transitions. [2024-11-21 22:05:58,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:58,098 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 19207 transitions. [2024-11-21 22:05:58,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-21 22:05:58,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:58,100 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:05:58,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 22:05:58,101 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:58,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:58,101 INFO L85 PathProgramCache]: Analyzing trace with hash -29932102, now seen corresponding path program 1 times [2024-11-21 22:05:58,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:58,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192520770] [2024-11-21 22:05:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:58,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-21 22:05:58,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192520770] [2024-11-21 22:05:58,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192520770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:58,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:58,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:05:58,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473849336] [2024-11-21 22:05:58,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:58,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:58,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:58,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:58,259 INFO L87 Difference]: Start difference. First operand 14273 states and 19207 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:00,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:00,360 INFO L93 Difference]: Finished difference Result 35303 states and 47603 transitions. [2024-11-21 22:06:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:00,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 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 294 [2024-11-21 22:06:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:00,391 INFO L225 Difference]: With dead ends: 35303 [2024-11-21 22:06:00,391 INFO L226 Difference]: Without dead ends: 21032 [2024-11-21 22:06:00,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:00,401 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 671 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:00,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 499 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-21 22:06:00,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21032 states. [2024-11-21 22:06:00,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21032 to 18779. [2024-11-21 22:06:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.1999147939077643) internal successors, (22532), 18778 states have internal predecessors, (22532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:00,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 22532 transitions. [2024-11-21 22:06:00,563 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 22532 transitions. Word has length 294 [2024-11-21 22:06:00,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:00,564 INFO L471 AbstractCegarLoop]: Abstraction has 18779 states and 22532 transitions. [2024-11-21 22:06:00,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:00,565 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 22532 transitions. [2024-11-21 22:06:00,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-21 22:06:00,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:00,569 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, 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, 1, 1, 1] [2024-11-21 22:06:00,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 22:06:00,569 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:00,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:00,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2052195617, now seen corresponding path program 1 times [2024-11-21 22:06:00,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:00,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058333502] [2024-11-21 22:06:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:00,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-21 22:06:00,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:06:00,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058333502] [2024-11-21 22:06:00,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058333502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:06:00,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:06:00,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:06:00,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866855482] [2024-11-21 22:06:00,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:06:00,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:06:00,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:06:00,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:06:00,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:00,977 INFO L87 Difference]: Start difference. First operand 18779 states and 22532 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:03,077 INFO L93 Difference]: Finished difference Result 45817 states and 55905 transitions. [2024-11-21 22:06:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:03,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 373 [2024-11-21 22:06:03,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:03,110 INFO L225 Difference]: With dead ends: 45817 [2024-11-21 22:06:03,110 INFO L226 Difference]: Without dead ends: 27040 [2024-11-21 22:06:03,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:03,129 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 3006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:03,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 105 Invalid, 3006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-21 22:06:03,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27040 states. [2024-11-21 22:06:03,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27040 to 27040. [2024-11-21 22:06:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.2134324494249047) internal successors, (32810), 27039 states have internal predecessors, (32810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 32810 transitions. [2024-11-21 22:06:03,462 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 32810 transitions. Word has length 373 [2024-11-21 22:06:03,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:03,463 INFO L471 AbstractCegarLoop]: Abstraction has 27040 states and 32810 transitions. [2024-11-21 22:06:03,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:03,463 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 32810 transitions. [2024-11-21 22:06:03,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2024-11-21 22:06:03,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:03,473 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:06:03,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 22:06:03,474 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:03,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2079442438, now seen corresponding path program 1 times [2024-11-21 22:06:03,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:03,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018606422] [2024-11-21 22:06:03,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:03,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-21 22:06:03,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:06:03,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018606422] [2024-11-21 22:06:03,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018606422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:06:03,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:06:03,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:06:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199353061] [2024-11-21 22:06:03,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:06:03,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:06:03,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:06:03,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:06:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:03,774 INFO L87 Difference]: Start difference. First operand 27040 states and 32810 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:06,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:06,027 INFO L93 Difference]: Finished difference Result 74355 states and 91281 transitions. [2024-11-21 22:06:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:06,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 387 [2024-11-21 22:06:06,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:06,071 INFO L225 Difference]: With dead ends: 74355 [2024-11-21 22:06:06,071 INFO L226 Difference]: Without dead ends: 47317 [2024-11-21 22:06:06,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:06,087 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 691 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:06,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 422 Invalid, 2888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-21 22:06:06,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47317 states. [2024-11-21 22:06:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47317 to 47317. [2024-11-21 22:06:06,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47317 states, 47316 states have (on average 1.1889846986220307) internal successors, (56258), 47316 states have internal predecessors, (56258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47317 states to 47317 states and 56258 transitions. [2024-11-21 22:06:06,460 INFO L78 Accepts]: Start accepts. Automaton has 47317 states and 56258 transitions. Word has length 387 [2024-11-21 22:06:06,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:06,460 INFO L471 AbstractCegarLoop]: Abstraction has 47317 states and 56258 transitions. [2024-11-21 22:06:06,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:06,461 INFO L276 IsEmpty]: Start isEmpty. Operand 47317 states and 56258 transitions. [2024-11-21 22:06:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2024-11-21 22:06:06,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:06,466 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:06:06,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 22:06:06,466 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:06,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:06,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2116695981, now seen corresponding path program 1 times [2024-11-21 22:06:06,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:06,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738694929] [2024-11-21 22:06:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-21 22:06:06,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:06:06,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738694929] [2024-11-21 22:06:06,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738694929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:06:06,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:06:06,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:06:06,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911811858] [2024-11-21 22:06:06,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:06:06,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:06:06,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:06:06,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:06:06,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:06,732 INFO L87 Difference]: Start difference. First operand 47317 states and 56258 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:08,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:08,953 INFO L93 Difference]: Finished difference Result 117162 states and 140257 transitions. [2024-11-21 22:06:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:08,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 393 [2024-11-21 22:06:08,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:09,028 INFO L225 Difference]: With dead ends: 117162 [2024-11-21 22:06:09,028 INFO L226 Difference]: Without dead ends: 69847 [2024-11-21 22:06:09,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:09,064 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 662 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:09,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 343 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-21 22:06:09,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69847 states. [2024-11-21 22:06:09,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69847 to 67594. [2024-11-21 22:06:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67594 states, 67593 states have (on average 1.1862914798869706) internal successors, (80185), 67593 states have internal predecessors, (80185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67594 states to 67594 states and 80185 transitions. [2024-11-21 22:06:09,949 INFO L78 Accepts]: Start accepts. Automaton has 67594 states and 80185 transitions. Word has length 393 [2024-11-21 22:06:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:09,950 INFO L471 AbstractCegarLoop]: Abstraction has 67594 states and 80185 transitions. [2024-11-21 22:06:09,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 67594 states and 80185 transitions. [2024-11-21 22:06:09,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-11-21 22:06:09,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:09,957 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:06:09,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-21 22:06:09,957 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:09,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:09,958 INFO L85 PathProgramCache]: Analyzing trace with hash -470222774, now seen corresponding path program 1 times [2024-11-21 22:06:09,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:09,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239534346] [2024-11-21 22:06:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:09,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2024-11-21 22:06:10,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:06:10,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239534346] [2024-11-21 22:06:10,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239534346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:06:10,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:06:10,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:06:10,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476746864] [2024-11-21 22:06:10,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:06:10,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:06:10,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:06:10,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:06:10,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:10,359 INFO L87 Difference]: Start difference. First operand 67594 states and 80185 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:12,750 INFO L93 Difference]: Finished difference Result 135186 states and 160368 transitions. [2024-11-21 22:06:12,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:12,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 419 [2024-11-21 22:06:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:12,817 INFO L225 Difference]: With dead ends: 135186 [2024-11-21 22:06:12,817 INFO L226 Difference]: Without dead ends: 67594 [2024-11-21 22:06:12,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:12,848 INFO L432 NwaCegarLoop]: 1167 mSDtfsCounter, 724 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:12,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1175 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-21 22:06:12,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67594 states. [2024-11-21 22:06:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67594 to 66092. [2024-11-21 22:06:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66092 states, 66091 states have (on average 1.1638195820913588) internal successors, (76918), 66091 states have internal predecessors, (76918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66092 states to 66092 states and 76918 transitions. [2024-11-21 22:06:13,584 INFO L78 Accepts]: Start accepts. Automaton has 66092 states and 76918 transitions. Word has length 419 [2024-11-21 22:06:13,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:13,585 INFO L471 AbstractCegarLoop]: Abstraction has 66092 states and 76918 transitions. [2024-11-21 22:06:13,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:13,585 INFO L276 IsEmpty]: Start isEmpty. Operand 66092 states and 76918 transitions. [2024-11-21 22:06:13,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-11-21 22:06:13,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:13,595 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, 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, 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] [2024-11-21 22:06:13,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-21 22:06:13,595 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:13,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:13,596 INFO L85 PathProgramCache]: Analyzing trace with hash 317084970, now seen corresponding path program 1 times [2024-11-21 22:06:13,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:13,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595986966] [2024-11-21 22:06:13,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:13,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2024-11-21 22:06:13,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:06:13,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595986966] [2024-11-21 22:06:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595986966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:06:13,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:06:13,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:06:13,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728149464] [2024-11-21 22:06:13,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:06:13,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:06:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:06:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:06:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:13,811 INFO L87 Difference]: Start difference. First operand 66092 states and 76918 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:16,189 INFO L93 Difference]: Finished difference Result 149455 states and 174411 transitions. [2024-11-21 22:06:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:16,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 472 [2024-11-21 22:06:16,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:16,273 INFO L225 Difference]: With dead ends: 149455 [2024-11-21 22:06:16,273 INFO L226 Difference]: Without dead ends: 83365 [2024-11-21 22:06:16,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:16,306 INFO L432 NwaCegarLoop]: 1118 mSDtfsCounter, 810 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:16,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1126 Invalid, 2662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-21 22:06:16,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83365 states. [2024-11-21 22:06:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83365 to 83365. [2024-11-21 22:06:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83365 states, 83364 states have (on average 1.146022263806919) internal successors, (95537), 83364 states have internal predecessors, (95537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83365 states to 83365 states and 95537 transitions. [2024-11-21 22:06:17,237 INFO L78 Accepts]: Start accepts. Automaton has 83365 states and 95537 transitions. Word has length 472 [2024-11-21 22:06:17,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:17,237 INFO L471 AbstractCegarLoop]: Abstraction has 83365 states and 95537 transitions. [2024-11-21 22:06:17,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:17,238 INFO L276 IsEmpty]: Start isEmpty. Operand 83365 states and 95537 transitions. [2024-11-21 22:06:17,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2024-11-21 22:06:17,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:17,264 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:06:17,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-21 22:06:17,264 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:17,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:17,265 INFO L85 PathProgramCache]: Analyzing trace with hash 251515768, now seen corresponding path program 1 times [2024-11-21 22:06:17,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:17,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19745379] [2024-11-21 22:06:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:17,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 503 proven. 58 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-21 22:06:18,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:06:18,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19745379] [2024-11-21 22:06:18,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19745379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:06:18,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024231780] [2024-11-21 22:06:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:18,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:06:18,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:06:18,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:06:18,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 22:06:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:18,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:06:18,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:06:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-21 22:06:19,028 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:06:19,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024231780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:06:19,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:06:19,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-21 22:06:19,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385514712] [2024-11-21 22:06:19,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:06:19,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:06:19,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:06:19,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:06:19,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:06:19,030 INFO L87 Difference]: Start difference. First operand 83365 states and 95537 transitions. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:21,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:21,007 INFO L93 Difference]: Finished difference Result 170483 states and 194907 transitions. [2024-11-21 22:06:21,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:21,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 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 655 [2024-11-21 22:06:21,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:21,089 INFO L225 Difference]: With dead ends: 170483 [2024-11-21 22:06:21,090 INFO L226 Difference]: Without dead ends: 83365 [2024-11-21 22:06:21,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:06:21,136 INFO L432 NwaCegarLoop]: 1337 mSDtfsCounter, 499 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:21,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 1345 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-21 22:06:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83365 states. [2024-11-21 22:06:21,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83365 to 81863. [2024-11-21 22:06:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81863 states, 81862 states have (on average 1.1431922015098581) internal successors, (93584), 81862 states have internal predecessors, (93584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81863 states to 81863 states and 93584 transitions. [2024-11-21 22:06:22,118 INFO L78 Accepts]: Start accepts. Automaton has 81863 states and 93584 transitions. Word has length 655 [2024-11-21 22:06:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:22,119 INFO L471 AbstractCegarLoop]: Abstraction has 81863 states and 93584 transitions. [2024-11-21 22:06:22,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand 81863 states and 93584 transitions. [2024-11-21 22:06:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2024-11-21 22:06:22,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:22,146 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:06:22,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 22:06:22,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-21 22:06:22,347 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:22,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:22,347 INFO L85 PathProgramCache]: Analyzing trace with hash -387937251, now seen corresponding path program 1 times [2024-11-21 22:06:22,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:22,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793408905] [2024-11-21 22:06:22,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:22,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 417 proven. 372 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-21 22:06:23,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:06:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793408905] [2024-11-21 22:06:23,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793408905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:06:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357332733] [2024-11-21 22:06:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:23,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:06:23,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:06:23,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:06:23,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 22:06:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:23,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:06:23,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:06:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-21 22:06:24,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:06:24,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357332733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:06:24,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:06:24,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-21 22:06:24,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465423412] [2024-11-21 22:06:24,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:06:24,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:06:24,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:06:24,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:06:24,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:06:24,210 INFO L87 Difference]: Start difference. First operand 81863 states and 93584 transitions. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:26,581 INFO L93 Difference]: Finished difference Result 183250 states and 212039 transitions. [2024-11-21 22:06:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:26,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 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 656 [2024-11-21 22:06:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:26,691 INFO L225 Difference]: With dead ends: 183250 [2024-11-21 22:06:26,691 INFO L226 Difference]: Without dead ends: 101389 [2024-11-21 22:06:26,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:06:26,729 INFO L432 NwaCegarLoop]: 1304 mSDtfsCounter, 495 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:26,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1312 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-21 22:06:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101389 states. [2024-11-21 22:06:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101389 to 99887. [2024-11-21 22:06:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99887 states, 99886 states have (on average 1.1316000240273911) internal successors, (113031), 99886 states have internal predecessors, (113031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99887 states to 99887 states and 113031 transitions. [2024-11-21 22:06:28,260 INFO L78 Accepts]: Start accepts. Automaton has 99887 states and 113031 transitions. Word has length 656 [2024-11-21 22:06:28,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:28,260 INFO L471 AbstractCegarLoop]: Abstraction has 99887 states and 113031 transitions. [2024-11-21 22:06:28,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:28,260 INFO L276 IsEmpty]: Start isEmpty. Operand 99887 states and 113031 transitions. [2024-11-21 22:06:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2024-11-21 22:06:28,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:28,279 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, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:06:28,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-21 22:06:28,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-21 22:06:28,480 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:28,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:28,480 INFO L85 PathProgramCache]: Analyzing trace with hash -510515516, now seen corresponding path program 1 times [2024-11-21 22:06:28,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:28,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078324826] [2024-11-21 22:06:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:28,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 704 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-21 22:06:28,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:06:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078324826] [2024-11-21 22:06:28,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078324826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:06:28,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:06:28,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:06:28,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567097656] [2024-11-21 22:06:28,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:06:28,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:06:28,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:06:28,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:06:28,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:28,724 INFO L87 Difference]: Start difference. First operand 99887 states and 113031 transitions. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:31,287 INFO L93 Difference]: Finished difference Result 222302 states and 252240 transitions. [2024-11-21 22:06:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:31,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 663 [2024-11-21 22:06:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:31,420 INFO L225 Difference]: With dead ends: 222302 [2024-11-21 22:06:31,420 INFO L226 Difference]: Without dead ends: 122417 [2024-11-21 22:06:31,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:31,445 INFO L432 NwaCegarLoop]: 1282 mSDtfsCounter, 655 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 2655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:31,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1290 Invalid, 2655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-21 22:06:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122417 states. [2024-11-21 22:06:32,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122417 to 119413. [2024-11-21 22:06:32,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119413 states, 119412 states have (on average 1.1160519880749002) internal successors, (133270), 119412 states have internal predecessors, (133270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119413 states to 119413 states and 133270 transitions. [2024-11-21 22:06:33,196 INFO L78 Accepts]: Start accepts. Automaton has 119413 states and 133270 transitions. Word has length 663 [2024-11-21 22:06:33,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:33,196 INFO L471 AbstractCegarLoop]: Abstraction has 119413 states and 133270 transitions. [2024-11-21 22:06:33,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 119413 states and 133270 transitions. [2024-11-21 22:06:33,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2024-11-21 22:06:33,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:33,211 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:06:33,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-21 22:06:33,212 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:33,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:33,213 INFO L85 PathProgramCache]: Analyzing trace with hash 218152461, now seen corresponding path program 1 times [2024-11-21 22:06:33,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:33,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32960102] [2024-11-21 22:06:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:33,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 739 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-21 22:06:33,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:06:33,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32960102] [2024-11-21 22:06:33,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32960102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:06:33,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:06:33,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:06:33,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571005028] [2024-11-21 22:06:33,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:06:33,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:06:33,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:06:33,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:06:33,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:33,490 INFO L87 Difference]: Start difference. First operand 119413 states and 133270 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:36,008 INFO L93 Difference]: Finished difference Result 242579 states and 270368 transitions. [2024-11-21 22:06:36,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:36,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 688 [2024-11-21 22:06:36,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:36,154 INFO L225 Difference]: With dead ends: 242579 [2024-11-21 22:06:36,154 INFO L226 Difference]: Without dead ends: 123168 [2024-11-21 22:06:36,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:36,222 INFO L432 NwaCegarLoop]: 1171 mSDtfsCounter, 738 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:36,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1178 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-21 22:06:36,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123168 states. [2024-11-21 22:06:37,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123168 to 119413. [2024-11-21 22:06:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119413 states, 119412 states have (on average 1.077320537299434) internal successors, (128645), 119412 states have internal predecessors, (128645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119413 states to 119413 states and 128645 transitions. [2024-11-21 22:06:37,796 INFO L78 Accepts]: Start accepts. Automaton has 119413 states and 128645 transitions. Word has length 688 [2024-11-21 22:06:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:37,797 INFO L471 AbstractCegarLoop]: Abstraction has 119413 states and 128645 transitions. [2024-11-21 22:06:37,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 119413 states and 128645 transitions. [2024-11-21 22:06:37,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2024-11-21 22:06:37,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:37,820 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:06:37,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-21 22:06:37,821 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:37,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:37,821 INFO L85 PathProgramCache]: Analyzing trace with hash 306250717, now seen corresponding path program 1 times [2024-11-21 22:06:37,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:37,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240210381] [2024-11-21 22:06:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:37,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 799 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-21 22:06:38,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:06:38,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240210381] [2024-11-21 22:06:38,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240210381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:06:38,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:06:38,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:06:38,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403099171] [2024-11-21 22:06:38,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:06:38,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:06:38,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:06:38,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:06:38,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:38,171 INFO L87 Difference]: Start difference. First operand 119413 states and 128645 transitions. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:41,066 INFO L93 Difference]: Finished difference Result 280129 states and 302392 transitions. [2024-11-21 22:06:41,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:41,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 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 712 [2024-11-21 22:06:41,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:41,238 INFO L225 Difference]: With dead ends: 280129 [2024-11-21 22:06:41,239 INFO L226 Difference]: Without dead ends: 159967 [2024-11-21 22:06:41,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:41,264 INFO L432 NwaCegarLoop]: 1056 mSDtfsCounter, 726 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:41,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1063 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-21 22:06:41,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159967 states. [2024-11-21 22:06:42,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159967 to 154710. [2024-11-21 22:06:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154710 states, 154709 states have (on average 1.070351433982509) internal successors, (165593), 154709 states have internal predecessors, (165593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154710 states to 154710 states and 165593 transitions. [2024-11-21 22:06:43,223 INFO L78 Accepts]: Start accepts. Automaton has 154710 states and 165593 transitions. Word has length 712 [2024-11-21 22:06:43,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:43,224 INFO L471 AbstractCegarLoop]: Abstraction has 154710 states and 165593 transitions. [2024-11-21 22:06:43,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:43,224 INFO L276 IsEmpty]: Start isEmpty. Operand 154710 states and 165593 transitions. [2024-11-21 22:06:43,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2024-11-21 22:06:43,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:43,255 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:06:43,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-21 22:06:43,256 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:43,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:43,256 INFO L85 PathProgramCache]: Analyzing trace with hash 636310962, now seen corresponding path program 1 times [2024-11-21 22:06:43,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:43,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915486667] [2024-11-21 22:06:43,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:43,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 471 proven. 416 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-21 22:06:44,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:06:44,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915486667] [2024-11-21 22:06:44,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915486667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:06:44,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675152906] [2024-11-21 22:06:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:44,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:06:44,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:06:44,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:06:44,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 22:06:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:44,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:06:44,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:06:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 648 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-21 22:06:45,282 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:06:45,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675152906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:06:45,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:06:45,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-21 22:06:45,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933646275] [2024-11-21 22:06:45,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:06:45,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:06:45,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:06:45,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:06:45,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:06:45,284 INFO L87 Difference]: Start difference. First operand 154710 states and 165593 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:47,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:47,757 INFO L93 Difference]: Finished difference Result 311671 states and 333515 transitions. [2024-11-21 22:06:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:47,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 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 742 [2024-11-21 22:06:47,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:47,959 INFO L225 Difference]: With dead ends: 311671 [2024-11-21 22:06:47,959 INFO L226 Difference]: Without dead ends: 156963 [2024-11-21 22:06:48,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:06:48,028 INFO L432 NwaCegarLoop]: 1358 mSDtfsCounter, 488 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:48,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1366 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-21 22:06:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156963 states. [2024-11-21 22:06:49,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156963 to 153208. [2024-11-21 22:06:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153208 states, 153207 states have (on average 1.0666418636224193) internal successors, (163417), 153207 states have internal predecessors, (163417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153208 states to 153208 states and 163417 transitions. [2024-11-21 22:06:50,059 INFO L78 Accepts]: Start accepts. Automaton has 153208 states and 163417 transitions. Word has length 742 [2024-11-21 22:06:50,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:50,060 INFO L471 AbstractCegarLoop]: Abstraction has 153208 states and 163417 transitions. [2024-11-21 22:06:50,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand 153208 states and 163417 transitions. [2024-11-21 22:06:50,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2024-11-21 22:06:50,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:50,088 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:06:50,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 22:06:50,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:06:50,289 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:50,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:50,289 INFO L85 PathProgramCache]: Analyzing trace with hash 138134295, now seen corresponding path program 1 times [2024-11-21 22:06:50,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:50,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416285369] [2024-11-21 22:06:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:50,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:06:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 753 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-21 22:06:50,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:06:50,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416285369] [2024-11-21 22:06:50,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416285369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:06:50,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:06:50,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:06:50,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829693056] [2024-11-21 22:06:50,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:06:51,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:06:51,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:06:51,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:06:51,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:51,001 INFO L87 Difference]: Start difference. First operand 153208 states and 163417 transitions. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:53,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:06:53,584 INFO L93 Difference]: Finished difference Result 305663 states and 326076 transitions. [2024-11-21 22:06:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:06:53,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 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 745 [2024-11-21 22:06:53,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:06:53,782 INFO L225 Difference]: With dead ends: 305663 [2024-11-21 22:06:53,782 INFO L226 Difference]: Without dead ends: 153208 [2024-11-21 22:06:54,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:06:54,178 INFO L432 NwaCegarLoop]: 1148 mSDtfsCounter, 539 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-21 22:06:54,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 1156 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-21 22:06:54,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153208 states. [2024-11-21 22:06:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153208 to 147951. [2024-11-21 22:06:55,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147951 states, 147950 states have (on average 1.0436363636363637) internal successors, (154406), 147950 states have internal predecessors, (154406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147951 states to 147951 states and 154406 transitions. [2024-11-21 22:06:55,671 INFO L78 Accepts]: Start accepts. Automaton has 147951 states and 154406 transitions. Word has length 745 [2024-11-21 22:06:55,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:06:55,671 INFO L471 AbstractCegarLoop]: Abstraction has 147951 states and 154406 transitions. [2024-11-21 22:06:55,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:06:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 147951 states and 154406 transitions. [2024-11-21 22:06:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-11-21 22:06:55,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:06:55,694 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:06:55,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-21 22:06:55,695 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:06:55,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:06:55,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1213495379, now seen corresponding path program 1 times [2024-11-21 22:06:55,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:06:55,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743516216] [2024-11-21 22:06:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:06:55,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:06:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat