./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label16.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label16.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 8986a14436e34fef464bf499036d3f2f22e9dee8c68dd84a0eb0b1e3795f6f62 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:03:16,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:03:16,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:03:16,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:03:16,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:03:16,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:03:16,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:03:16,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:03:16,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:03:16,659 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:03:16,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:03:16,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:03:16,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:03:16,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:03:16,661 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:03:16,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:03:16,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:03:16,663 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:03:16,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:03:16,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:03:16,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:03:16,665 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:03:16,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:03:16,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:03:16,667 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:03:16,667 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:03:16,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:03:16,668 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:03:16,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:03:16,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:03:16,670 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:03:16,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:03:16,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:03:16,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:03:16,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:03:16,671 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:03:16,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:03:16,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:03:16,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:03:16,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:03:16,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:03:16,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:03:16,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8986a14436e34fef464bf499036d3f2f22e9dee8c68dd84a0eb0b1e3795f6f62 [2024-10-12 16:03:16,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:03:16,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:03:16,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:03:16,945 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:03:16,946 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:03:16,947 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label16.c [2024-10-12 16:03:18,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:03:18,953 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:03:18,955 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label16.c [2024-10-12 16:03:18,993 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aef7cfd1d/b52d60dbe1e94a5c8c80a74a0b9bc64e/FLAG1fb8b2e41 [2024-10-12 16:03:19,009 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aef7cfd1d/b52d60dbe1e94a5c8c80a74a0b9bc64e [2024-10-12 16:03:19,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:03:19,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:03:19,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:03:19,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:03:19,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:03:19,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:03:19" (1/1) ... [2024-10-12 16:03:19,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee5616b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:19, skipping insertion in model container [2024-10-12 16:03:19,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:03:19" (1/1) ... [2024-10-12 16:03:19,125 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:03:19,422 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label16.c[8006,8019] [2024-10-12 16:03:20,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:03:20,153 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:03:20,182 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label16.c[8006,8019] [2024-10-12 16:03:20,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:03:20,634 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:03:20,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20 WrapperNode [2024-10-12 16:03:20,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:03:20,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:03:20,636 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:03:20,636 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:03:20,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (1/1) ... [2024-10-12 16:03:20,701 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (1/1) ... [2024-10-12 16:03:21,035 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-10-12 16:03:21,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:03:21,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:03:21,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:03:21,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:03:21,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (1/1) ... [2024-10-12 16:03:21,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (1/1) ... [2024-10-12 16:03:21,107 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (1/1) ... [2024-10-12 16:03:21,295 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 16:03:21,295 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (1/1) ... [2024-10-12 16:03:21,296 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (1/1) ... [2024-10-12 16:03:21,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (1/1) ... [2024-10-12 16:03:21,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (1/1) ... [2024-10-12 16:03:21,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (1/1) ... [2024-10-12 16:03:21,542 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (1/1) ... [2024-10-12 16:03:21,609 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:03:21,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:03:21,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:03:21,629 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:03:21,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (1/1) ... [2024-10-12 16:03:21,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:03:21,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:03:21,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 16:03:21,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 16:03:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:03:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:03:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:03:21,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:03:21,805 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:03:21,807 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:03:26,194 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-10-12 16:03:26,195 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:03:26,267 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:03:26,268 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:03:26,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:03:26 BoogieIcfgContainer [2024-10-12 16:03:26,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:03:26,270 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:03:26,270 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:03:26,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:03:26,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:03:19" (1/3) ... [2024-10-12 16:03:26,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75de2b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:03:26, skipping insertion in model container [2024-10-12 16:03:26,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:20" (2/3) ... [2024-10-12 16:03:26,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75de2b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:03:26, skipping insertion in model container [2024-10-12 16:03:26,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:03:26" (3/3) ... [2024-10-12 16:03:26,276 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label16.c [2024-10-12 16:03:26,294 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:03:26,295 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:03:26,392 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:03:26,399 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;@60cf0be0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:03:26,399 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:03:26,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-12 16:03:26,420 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:26,421 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:26,422 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:26,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:26,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1355723529, now seen corresponding path program 1 times [2024-10-12 16:03:26,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:26,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413683914] [2024-10-12 16:03:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:26,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:26,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:03:26,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:26,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413683914] [2024-10-12 16:03:26,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413683914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:26,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:26,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:03:26,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494745239] [2024-10-12 16:03:26,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:26,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:03:26,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:03:26,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:03:26,657 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:26,750 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2024-10-12 16:03:26,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:03:26,753 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-10-12 16:03:26,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:26,770 INFO L225 Difference]: With dead ends: 1511 [2024-10-12 16:03:26,770 INFO L226 Difference]: Without dead ends: 754 [2024-10-12 16:03:26,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:03:26,778 INFO L432 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:26,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:03:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-10-12 16:03:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-10-12 16:03:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2024-10-12 16:03:26,858 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 64 [2024-10-12 16:03:26,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:26,859 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2024-10-12 16:03:26,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:26,859 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2024-10-12 16:03:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-12 16:03:26,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:26,861 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:26,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:03:26,861 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:26,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1359935174, now seen corresponding path program 1 times [2024-10-12 16:03:26,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:26,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284791363] [2024-10-12 16:03:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:26,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:03:27,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:27,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284791363] [2024-10-12 16:03:27,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284791363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:27,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:27,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:03:27,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950362722] [2024-10-12 16:03:27,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:27,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:03:27,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:03:27,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:03:27,217 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:32,921 INFO L93 Difference]: Finished difference Result 3009 states and 5747 transitions. [2024-10-12 16:03:32,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:03:32,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-10-12 16:03:32,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:32,934 INFO L225 Difference]: With dead ends: 3009 [2024-10-12 16:03:32,934 INFO L226 Difference]: Without dead ends: 2256 [2024-10-12 16:03:32,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:03:32,940 INFO L432 NwaCegarLoop]: 673 mSDtfsCounter, 2181 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5355 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 6508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:32,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 691 Invalid, 6508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5355 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-10-12 16:03:32,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2024-10-12 16:03:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2024-10-12 16:03:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.5751662971175167) internal successors, (3552), 2255 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3552 transitions. [2024-10-12 16:03:33,005 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3552 transitions. Word has length 64 [2024-10-12 16:03:33,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:33,005 INFO L471 AbstractCegarLoop]: Abstraction has 2256 states and 3552 transitions. [2024-10-12 16:03:33,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:33,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3552 transitions. [2024-10-12 16:03:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-12 16:03:33,010 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:33,010 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:33,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:03:33,011 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:33,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:33,016 INFO L85 PathProgramCache]: Analyzing trace with hash 545914058, now seen corresponding path program 1 times [2024-10-12 16:03:33,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:33,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110846525] [2024-10-12 16:03:33,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:33,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:03:33,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:33,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110846525] [2024-10-12 16:03:33,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110846525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:33,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:33,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:03:33,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202987900] [2024-10-12 16:03:33,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:33,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:03:33,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:33,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:03:33,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:03:33,417 INFO L87 Difference]: Start difference. First operand 2256 states and 3552 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:37,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:37,204 INFO L93 Difference]: Finished difference Result 6050 states and 9915 transitions. [2024-10-12 16:03:37,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:03:37,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2024-10-12 16:03:37,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:37,221 INFO L225 Difference]: With dead ends: 6050 [2024-10-12 16:03:37,221 INFO L226 Difference]: Without dead ends: 3758 [2024-10-12 16:03:37,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:03:37,227 INFO L432 NwaCegarLoop]: 672 mSDtfsCounter, 703 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3096 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 3825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:37,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 685 Invalid, 3825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3096 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-10-12 16:03:37,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2024-10-12 16:03:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3007. [2024-10-12 16:03:37,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.4321357285429142) internal successors, (4305), 3006 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4305 transitions. [2024-10-12 16:03:37,302 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4305 transitions. Word has length 135 [2024-10-12 16:03:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:37,304 INFO L471 AbstractCegarLoop]: Abstraction has 3007 states and 4305 transitions. [2024-10-12 16:03:37,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4305 transitions. [2024-10-12 16:03:37,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-10-12 16:03:37,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:37,316 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:03:37,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:03:37,316 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:37,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash -66196378, now seen corresponding path program 1 times [2024-10-12 16:03:37,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:37,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398125749] [2024-10-12 16:03:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:37,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-12 16:03:37,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:37,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398125749] [2024-10-12 16:03:37,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398125749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:37,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:37,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:03:37,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267706047] [2024-10-12 16:03:37,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:37,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:03:37,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:37,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:03:37,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:03:37,692 INFO L87 Difference]: Start difference. First operand 3007 states and 4305 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 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) [2024-10-12 16:03:40,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:40,099 INFO L93 Difference]: Finished difference Result 8266 states and 11518 transitions. [2024-10-12 16:03:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:03:40,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 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 274 [2024-10-12 16:03:40,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:40,121 INFO L225 Difference]: With dead ends: 8266 [2024-10-12 16:03:40,121 INFO L226 Difference]: Without dead ends: 5260 [2024-10-12 16:03:40,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:03:40,132 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:40,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 425 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:03:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2024-10-12 16:03:40,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 5260. [2024-10-12 16:03:40,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 1.1983266780756798) internal successors, (6302), 5259 states have internal predecessors, (6302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 6302 transitions. [2024-10-12 16:03:40,232 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 6302 transitions. Word has length 274 [2024-10-12 16:03:40,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:40,234 INFO L471 AbstractCegarLoop]: Abstraction has 5260 states and 6302 transitions. [2024-10-12 16:03:40,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 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) [2024-10-12 16:03:40,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 6302 transitions. [2024-10-12 16:03:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-10-12 16:03:40,239 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:40,239 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:03:40,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:03:40,239 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:40,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:40,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1115001099, now seen corresponding path program 1 times [2024-10-12 16:03:40,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:40,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058603651] [2024-10-12 16:03:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:40,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-12 16:03:40,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:40,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058603651] [2024-10-12 16:03:40,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058603651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:40,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:40,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:03:40,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933363698] [2024-10-12 16:03:40,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:40,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:03:40,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:40,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:03:40,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:03:40,673 INFO L87 Difference]: Start difference. First operand 5260 states and 6302 transitions. Second operand has 4 states, 4 states have (on average 51.75) 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) [2024-10-12 16:03:43,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:43,644 INFO L93 Difference]: Finished difference Result 12060 states and 15067 transitions. [2024-10-12 16:03:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:03:43,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) 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 276 [2024-10-12 16:03:43,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:43,665 INFO L225 Difference]: With dead ends: 12060 [2024-10-12 16:03:43,665 INFO L226 Difference]: Without dead ends: 7515 [2024-10-12 16:03:43,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:03:43,672 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 850 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 3962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:43,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 323 Invalid, 3962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3409 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-12 16:03:43,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7515 states. [2024-10-12 16:03:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7515 to 7513. [2024-10-12 16:03:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7513 states, 7512 states have (on average 1.1813099041533546) internal successors, (8874), 7512 states have internal predecessors, (8874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7513 states to 7513 states and 8874 transitions. [2024-10-12 16:03:43,781 INFO L78 Accepts]: Start accepts. Automaton has 7513 states and 8874 transitions. Word has length 276 [2024-10-12 16:03:43,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:43,782 INFO L471 AbstractCegarLoop]: Abstraction has 7513 states and 8874 transitions. [2024-10-12 16:03:43,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) 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) [2024-10-12 16:03:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand 7513 states and 8874 transitions. [2024-10-12 16:03:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-10-12 16:03:43,787 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:43,787 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:43,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:03:43,788 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:43,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:43,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1864517792, now seen corresponding path program 1 times [2024-10-12 16:03:43,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:43,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068175487] [2024-10-12 16:03:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:43,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-12 16:03:44,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:44,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068175487] [2024-10-12 16:03:44,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068175487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:44,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:44,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:03:44,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643785465] [2024-10-12 16:03:44,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:44,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:03:44,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:44,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:03:44,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:03:44,532 INFO L87 Difference]: Start difference. First operand 7513 states and 8874 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:47,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:47,141 INFO L93 Difference]: Finished difference Result 16527 states and 20145 transitions. [2024-10-12 16:03:47,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:03:47,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 353 [2024-10-12 16:03:47,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:47,173 INFO L225 Difference]: With dead ends: 16527 [2024-10-12 16:03:47,173 INFO L226 Difference]: Without dead ends: 9766 [2024-10-12 16:03:47,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:03:47,183 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 825 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:47,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 137 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [989 Valid, 2030 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:03:47,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2024-10-12 16:03:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2024-10-12 16:03:47,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.207373271889401) internal successors, (11790), 9765 states have internal predecessors, (11790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 11790 transitions. [2024-10-12 16:03:47,337 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 11790 transitions. Word has length 353 [2024-10-12 16:03:47,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:47,338 INFO L471 AbstractCegarLoop]: Abstraction has 9766 states and 11790 transitions. [2024-10-12 16:03:47,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:47,342 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 11790 transitions. [2024-10-12 16:03:47,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-10-12 16:03:47,348 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:47,349 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-10-12 16:03:47,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:03:47,350 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:47,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:47,350 INFO L85 PathProgramCache]: Analyzing trace with hash -826193316, now seen corresponding path program 1 times [2024-10-12 16:03:47,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:47,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944986014] [2024-10-12 16:03:47,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:47,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-12 16:03:47,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:47,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944986014] [2024-10-12 16:03:47,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944986014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:47,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:47,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:03:47,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370065701] [2024-10-12 16:03:47,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:47,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:03:47,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:47,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:03:47,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:03:47,818 INFO L87 Difference]: Start difference. First operand 9766 states and 11790 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:50,502 INFO L93 Difference]: Finished difference Result 21033 states and 25743 transitions. [2024-10-12 16:03:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:03:50,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 377 [2024-10-12 16:03:50,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:50,522 INFO L225 Difference]: With dead ends: 21033 [2024-10-12 16:03:50,522 INFO L226 Difference]: Without dead ends: 12019 [2024-10-12 16:03:50,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:03:50,534 INFO L432 NwaCegarLoop]: 1194 mSDtfsCounter, 680 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:50,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1201 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:03:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12019 states. [2024-10-12 16:03:50,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12019 to 12019. [2024-10-12 16:03:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12019 states, 12018 states have (on average 1.1927109335996007) internal successors, (14334), 12018 states have internal predecessors, (14334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12019 states to 12019 states and 14334 transitions. [2024-10-12 16:03:50,681 INFO L78 Accepts]: Start accepts. Automaton has 12019 states and 14334 transitions. Word has length 377 [2024-10-12 16:03:50,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:50,681 INFO L471 AbstractCegarLoop]: Abstraction has 12019 states and 14334 transitions. [2024-10-12 16:03:50,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 12019 states and 14334 transitions. [2024-10-12 16:03:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-10-12 16:03:50,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:50,688 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:50,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:03:50,689 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:50,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:50,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1439522879, now seen corresponding path program 1 times [2024-10-12 16:03:50,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:50,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069891447] [2024-10-12 16:03:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:50,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-12 16:03:50,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:50,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069891447] [2024-10-12 16:03:50,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069891447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:50,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:50,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:03:50,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866764335] [2024-10-12 16:03:50,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:50,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:03:50,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:50,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:03:50,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:03:50,990 INFO L87 Difference]: Start difference. First operand 12019 states and 14334 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:53,722 INFO L93 Difference]: Finished difference Result 33800 states and 40732 transitions. [2024-10-12 16:03:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:03:53,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 391 [2024-10-12 16:03:53,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:53,759 INFO L225 Difference]: With dead ends: 33800 [2024-10-12 16:03:53,760 INFO L226 Difference]: Without dead ends: 22533 [2024-10-12 16:03:53,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:03:53,776 INFO L432 NwaCegarLoop]: 1256 mSDtfsCounter, 636 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2631 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 3022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 2631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:53,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1262 Invalid, 3022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 2631 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:03:53,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22533 states. [2024-10-12 16:03:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22533 to 21782. [2024-10-12 16:03:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21782 states, 21781 states have (on average 1.1792387860979754) internal successors, (25685), 21781 states have internal predecessors, (25685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:54,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21782 states to 21782 states and 25685 transitions. [2024-10-12 16:03:54,062 INFO L78 Accepts]: Start accepts. Automaton has 21782 states and 25685 transitions. Word has length 391 [2024-10-12 16:03:54,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:54,063 INFO L471 AbstractCegarLoop]: Abstraction has 21782 states and 25685 transitions. [2024-10-12 16:03:54,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:54,064 INFO L276 IsEmpty]: Start isEmpty. Operand 21782 states and 25685 transitions. [2024-10-12 16:03:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-10-12 16:03:54,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:54,068 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:54,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:03:54,069 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:54,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1104884144, now seen corresponding path program 1 times [2024-10-12 16:03:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:54,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191171575] [2024-10-12 16:03:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 89 proven. 99 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-12 16:03:54,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:54,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191171575] [2024-10-12 16:03:54,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191171575] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:03:54,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883989167] [2024-10-12 16:03:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:54,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:03:54,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:03:54,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:03:54,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:03:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:54,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:03:54,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:03:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-12 16:03:55,043 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:03:55,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883989167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:55,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:03:55,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 16:03:55,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467302953] [2024-10-12 16:03:55,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:55,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:03:55,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:55,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:03:55,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:03:55,048 INFO L87 Difference]: Start difference. First operand 21782 states and 25685 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) [2024-10-12 16:03:57,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:57,592 INFO L93 Difference]: Finished difference Result 59334 states and 70799 transitions. [2024-10-12 16:03:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:03:57,592 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 392 [2024-10-12 16:03:57,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:57,649 INFO L225 Difference]: With dead ends: 59334 [2024-10-12 16:03:57,649 INFO L226 Difference]: Without dead ends: 38304 [2024-10-12 16:03:57,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:03:57,676 INFO L432 NwaCegarLoop]: 1335 mSDtfsCounter, 709 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:57,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1342 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:03:57,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38304 states. [2024-10-12 16:03:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38304 to 36051. [2024-10-12 16:03:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36051 states, 36050 states have (on average 1.1438002773925104) internal successors, (41234), 36050 states have internal predecessors, (41234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36051 states to 36051 states and 41234 transitions. [2024-10-12 16:03:58,251 INFO L78 Accepts]: Start accepts. Automaton has 36051 states and 41234 transitions. Word has length 392 [2024-10-12 16:03:58,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:58,252 INFO L471 AbstractCegarLoop]: Abstraction has 36051 states and 41234 transitions. [2024-10-12 16:03:58,252 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) [2024-10-12 16:03:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 36051 states and 41234 transitions. [2024-10-12 16:03:58,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-10-12 16:03:58,257 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:58,257 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:03:58,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 16:03:58,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:03:58,458 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:58,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2020609291, now seen corresponding path program 1 times [2024-10-12 16:03:58,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:58,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972451781] [2024-10-12 16:03:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:58,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:58,749 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-12 16:03:58,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:58,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972451781] [2024-10-12 16:03:58,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972451781] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:58,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:58,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:03:58,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306839803] [2024-10-12 16:03:58,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:58,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:03:58,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:58,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:03:58,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:03:58,752 INFO L87 Difference]: Start difference. First operand 36051 states and 41234 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:01,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:01,435 INFO L93 Difference]: Finished difference Result 87872 states and 101252 transitions. [2024-10-12 16:04:01,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:01,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 395 [2024-10-12 16:04:01,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:01,502 INFO L225 Difference]: With dead ends: 87872 [2024-10-12 16:04:01,502 INFO L226 Difference]: Without dead ends: 52573 [2024-10-12 16:04:01,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:01,529 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 713 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:01,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 295 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:04:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52573 states. [2024-10-12 16:04:02,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52573 to 50320. [2024-10-12 16:04:02,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50320 states, 50319 states have (on average 1.143862159422882) internal successors, (57558), 50319 states have internal predecessors, (57558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50320 states to 50320 states and 57558 transitions. [2024-10-12 16:04:02,179 INFO L78 Accepts]: Start accepts. Automaton has 50320 states and 57558 transitions. Word has length 395 [2024-10-12 16:04:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:02,181 INFO L471 AbstractCegarLoop]: Abstraction has 50320 states and 57558 transitions. [2024-10-12 16:04:02,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:02,181 INFO L276 IsEmpty]: Start isEmpty. Operand 50320 states and 57558 transitions. [2024-10-12 16:04:02,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-10-12 16:04:02,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:02,197 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:02,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 16:04:02,198 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:02,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:02,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1229585856, now seen corresponding path program 1 times [2024-10-12 16:04:02,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:02,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710543004] [2024-10-12 16:04:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:02,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 618 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-12 16:04:02,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:02,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710543004] [2024-10-12 16:04:02,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710543004] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:02,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:02,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:02,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280323073] [2024-10-12 16:04:02,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:02,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:02,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:02,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:02,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:02,506 INFO L87 Difference]: Start difference. First operand 50320 states and 57558 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:05,346 INFO L93 Difference]: Finished difference Result 124671 states and 144361 transitions. [2024-10-12 16:04:05,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:05,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 483 [2024-10-12 16:04:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:05,433 INFO L225 Difference]: With dead ends: 124671 [2024-10-12 16:04:05,433 INFO L226 Difference]: Without dead ends: 75103 [2024-10-12 16:04:05,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:05,475 INFO L432 NwaCegarLoop]: 1080 mSDtfsCounter, 771 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 781 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 781 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:05,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1086 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [781 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:04:05,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75103 states. [2024-10-12 16:04:06,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75103 to 70597. [2024-10-12 16:04:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70597 states, 70596 states have (on average 1.1476004306192986) internal successors, (81016), 70596 states have internal predecessors, (81016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70597 states to 70597 states and 81016 transitions. [2024-10-12 16:04:06,659 INFO L78 Accepts]: Start accepts. Automaton has 70597 states and 81016 transitions. Word has length 483 [2024-10-12 16:04:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:06,661 INFO L471 AbstractCegarLoop]: Abstraction has 70597 states and 81016 transitions. [2024-10-12 16:04:06,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:06,661 INFO L276 IsEmpty]: Start isEmpty. Operand 70597 states and 81016 transitions. [2024-10-12 16:04:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2024-10-12 16:04:06,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:06,675 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 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] [2024-10-12 16:04:06,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 16:04:06,675 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:06,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1631493747, now seen corresponding path program 1 times [2024-10-12 16:04:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:06,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24902793] [2024-10-12 16:04:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:06,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 645 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-10-12 16:04:07,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:07,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24902793] [2024-10-12 16:04:07,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24902793] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:07,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:07,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:07,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495439154] [2024-10-12 16:04:07,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:07,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:07,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:07,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:07,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:07,307 INFO L87 Difference]: Start difference. First operand 70597 states and 81016 transitions. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:10,398 INFO L93 Difference]: Finished difference Result 141944 states and 162758 transitions. [2024-10-12 16:04:10,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:10,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 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 497 [2024-10-12 16:04:10,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:10,485 INFO L225 Difference]: With dead ends: 141944 [2024-10-12 16:04:10,486 INFO L226 Difference]: Without dead ends: 72099 [2024-10-12 16:04:10,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:10,507 INFO L432 NwaCegarLoop]: 1256 mSDtfsCounter, 694 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:10,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1263 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-12 16:04:10,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72099 states. [2024-10-12 16:04:11,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72099 to 70597. [2024-10-12 16:04:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70597 states, 70596 states have (on average 1.128548359680435) internal successors, (79671), 70596 states have internal predecessors, (79671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:11,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70597 states to 70597 states and 79671 transitions. [2024-10-12 16:04:11,437 INFO L78 Accepts]: Start accepts. Automaton has 70597 states and 79671 transitions. Word has length 497 [2024-10-12 16:04:11,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:11,438 INFO L471 AbstractCegarLoop]: Abstraction has 70597 states and 79671 transitions. [2024-10-12 16:04:11,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:11,438 INFO L276 IsEmpty]: Start isEmpty. Operand 70597 states and 79671 transitions. [2024-10-12 16:04:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-10-12 16:04:11,456 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:11,457 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:11,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 16:04:11,457 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:11,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:11,457 INFO L85 PathProgramCache]: Analyzing trace with hash 625699239, now seen corresponding path program 1 times [2024-10-12 16:04:11,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:11,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683396935] [2024-10-12 16:04:11,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:11,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:11,973 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 621 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-10-12 16:04:11,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:11,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683396935] [2024-10-12 16:04:11,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683396935] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:11,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:11,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:11,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273398670] [2024-10-12 16:04:11,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:11,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:11,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:11,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:11,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:11,977 INFO L87 Difference]: Start difference. First operand 70597 states and 79671 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:15,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:15,014 INFO L93 Difference]: Finished difference Result 186253 states and 210446 transitions. [2024-10-12 16:04:15,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:15,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 501 [2024-10-12 16:04:15,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:15,142 INFO L225 Difference]: With dead ends: 186253 [2024-10-12 16:04:15,142 INFO L226 Difference]: Without dead ends: 116408 [2024-10-12 16:04:15,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:15,318 INFO L432 NwaCegarLoop]: 1301 mSDtfsCounter, 658 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:15,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1308 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:04:15,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116408 states. [2024-10-12 16:04:16,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116408 to 112653. [2024-10-12 16:04:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112653 states, 112652 states have (on average 1.10512019316124) internal successors, (124494), 112652 states have internal predecessors, (124494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112653 states to 112653 states and 124494 transitions. [2024-10-12 16:04:16,798 INFO L78 Accepts]: Start accepts. Automaton has 112653 states and 124494 transitions. Word has length 501 [2024-10-12 16:04:16,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:16,799 INFO L471 AbstractCegarLoop]: Abstraction has 112653 states and 124494 transitions. [2024-10-12 16:04:16,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 112653 states and 124494 transitions. [2024-10-12 16:04:16,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-10-12 16:04:16,820 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:16,821 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:16,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 16:04:16,821 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:16,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:16,822 INFO L85 PathProgramCache]: Analyzing trace with hash 211046985, now seen corresponding path program 1 times [2024-10-12 16:04:16,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:16,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901199416] [2024-10-12 16:04:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:16,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 732 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2024-10-12 16:04:17,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:17,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901199416] [2024-10-12 16:04:17,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901199416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:17,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:17,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:17,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94165774] [2024-10-12 16:04:17,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:17,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:17,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:17,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:17,545 INFO L87 Difference]: Start difference. First operand 112653 states and 124494 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:20,010 INFO L93 Difference]: Finished difference Result 227558 states and 251268 transitions. [2024-10-12 16:04:20,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:20,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 537 [2024-10-12 16:04:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:20,132 INFO L225 Difference]: With dead ends: 227558 [2024-10-12 16:04:20,132 INFO L226 Difference]: Without dead ends: 111902 [2024-10-12 16:04:20,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:20,186 INFO L432 NwaCegarLoop]: 1305 mSDtfsCounter, 730 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:20,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1311 Invalid, 2305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-12 16:04:20,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111902 states. [2024-10-12 16:04:21,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111902 to 108898. [2024-10-12 16:04:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108898 states, 108897 states have (on average 1.093124695813475) internal successors, (119038), 108897 states have internal predecessors, (119038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108898 states to 108898 states and 119038 transitions. [2024-10-12 16:04:21,644 INFO L78 Accepts]: Start accepts. Automaton has 108898 states and 119038 transitions. Word has length 537 [2024-10-12 16:04:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:21,645 INFO L471 AbstractCegarLoop]: Abstraction has 108898 states and 119038 transitions. [2024-10-12 16:04:21,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:21,645 INFO L276 IsEmpty]: Start isEmpty. Operand 108898 states and 119038 transitions. [2024-10-12 16:04:21,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2024-10-12 16:04:21,664 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:21,664 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:21,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:04:21,665 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:21,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash 60806092, now seen corresponding path program 1 times [2024-10-12 16:04:21,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:21,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52542915] [2024-10-12 16:04:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:21,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2024-10-12 16:04:22,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:22,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52542915] [2024-10-12 16:04:22,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52542915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:22,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:22,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:22,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876261012] [2024-10-12 16:04:22,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:22,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:22,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:22,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:22,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:22,347 INFO L87 Difference]: Start difference. First operand 108898 states and 119038 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:25,204 INFO L93 Difference]: Finished difference Result 233566 states and 255336 transitions. [2024-10-12 16:04:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:25,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 555 [2024-10-12 16:04:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:25,343 INFO L225 Difference]: With dead ends: 233566 [2024-10-12 16:04:25,343 INFO L226 Difference]: Without dead ends: 125420 [2024-10-12 16:04:25,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:25,393 INFO L432 NwaCegarLoop]: 1110 mSDtfsCounter, 808 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:25,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 1117 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:04:25,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125420 states. [2024-10-12 16:04:26,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125420 to 123918. [2024-10-12 16:04:26,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123918 states, 123917 states have (on average 1.0864772387969366) internal successors, (134633), 123917 states have internal predecessors, (134633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123918 states to 123918 states and 134633 transitions. [2024-10-12 16:04:27,097 INFO L78 Accepts]: Start accepts. Automaton has 123918 states and 134633 transitions. Word has length 555 [2024-10-12 16:04:27,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:27,097 INFO L471 AbstractCegarLoop]: Abstraction has 123918 states and 134633 transitions. [2024-10-12 16:04:27,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:27,097 INFO L276 IsEmpty]: Start isEmpty. Operand 123918 states and 134633 transitions. [2024-10-12 16:04:27,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2024-10-12 16:04:27,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:27,118 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-10-12 16:04:27,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 16:04:27,119 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:27,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:27,119 INFO L85 PathProgramCache]: Analyzing trace with hash 517092054, now seen corresponding path program 1 times [2024-10-12 16:04:27,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:27,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505942427] [2024-10-12 16:04:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:27,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 742 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-10-12 16:04:27,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:27,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505942427] [2024-10-12 16:04:27,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505942427] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:27,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:27,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:27,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823596670] [2024-10-12 16:04:27,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:27,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:27,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:27,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:27,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:27,695 INFO L87 Difference]: Start difference. First operand 123918 states and 134633 transitions. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:31,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:31,176 INFO L93 Difference]: Finished difference Result 247084 states and 268509 transitions. [2024-10-12 16:04:31,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:31,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 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 635 [2024-10-12 16:04:31,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:31,352 INFO L225 Difference]: With dead ends: 247084 [2024-10-12 16:04:31,353 INFO L226 Difference]: Without dead ends: 123918 [2024-10-12 16:04:31,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:31,414 INFO L432 NwaCegarLoop]: 1234 mSDtfsCounter, 669 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:31,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1241 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:04:31,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123918 states. [2024-10-12 16:04:32,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123918 to 120914. [2024-10-12 16:04:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120914 states, 120913 states have (on average 1.0642776210994682) internal successors, (128685), 120913 states have internal predecessors, (128685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120914 states to 120914 states and 128685 transitions. [2024-10-12 16:04:32,746 INFO L78 Accepts]: Start accepts. Automaton has 120914 states and 128685 transitions. Word has length 635 [2024-10-12 16:04:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:32,746 INFO L471 AbstractCegarLoop]: Abstraction has 120914 states and 128685 transitions. [2024-10-12 16:04:32,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 120914 states and 128685 transitions. [2024-10-12 16:04:32,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2024-10-12 16:04:32,762 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:32,763 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 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] [2024-10-12 16:04:32,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 16:04:32,763 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:32,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:32,764 INFO L85 PathProgramCache]: Analyzing trace with hash 674431219, now seen corresponding path program 1 times [2024-10-12 16:04:32,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:32,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498487183] [2024-10-12 16:04:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:32,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat