./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sokoban.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sokoban.1.prop1-func-interl.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash b5ffdf8aa569a6d5d5c1d52882818fd8cd7eb42f063d34ae678278eac14ece07 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 19:04:20,687 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:04:20,766 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 19:04:20,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:04:20,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:04:20,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:04:20,792 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:04:20,792 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:04:20,793 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:04:20,793 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:04:20,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:04:20,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:04:20,794 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:04:20,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:04:20,795 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:04:20,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:04:20,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:04:20,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:04:20,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:04:20,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:04:20,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:04:20,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:04:20,799 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:04:20,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:04:20,799 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:04:20,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:04:20,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:04:20,800 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:04:20,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:04:20,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:04:20,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:04:20,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:04:20,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:04:20,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:04:20,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:04:20,803 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:04:20,803 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:04:20,804 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:04:20,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:04:20,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5ffdf8aa569a6d5d5c1d52882818fd8cd7eb42f063d34ae678278eac14ece07 [2024-11-08 19:04:21,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:04:21,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:04:21,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:04:21,089 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:04:21,090 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:04:21,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sokoban.1.prop1-func-interl.c [2024-11-08 19:04:22,616 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:04:23,050 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:04:23,051 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sokoban.1.prop1-func-interl.c [2024-11-08 19:04:23,088 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc8e3593d/d2d4d928bcdb436faa9195bd320fce3c/FLAG6e873deda [2024-11-08 19:04:23,190 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc8e3593d/d2d4d928bcdb436faa9195bd320fce3c [2024-11-08 19:04:23,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:04:23,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:04:23,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:04:23,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:04:23,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:04:23,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:04:23" (1/1) ... [2024-11-08 19:04:23,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e85d1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:23, skipping insertion in model container [2024-11-08 19:04:23,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:04:23" (1/1) ... [2024-11-08 19:04:23,375 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:04:23,706 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sokoban.1.prop1-func-interl.c[1174,1187] [2024-11-08 19:04:24,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:04:24,545 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:04:24,557 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sokoban.1.prop1-func-interl.c[1174,1187] [2024-11-08 19:04:25,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:04:25,190 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:04:25,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25 WrapperNode [2024-11-08 19:04:25,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:04:25,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:04:25,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:04:25,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:04:25,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (1/1) ... [2024-11-08 19:04:25,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (1/1) ... [2024-11-08 19:04:27,538 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 17358 [2024-11-08 19:04:27,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:04:27,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:04:27,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:04:27,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:04:27,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (1/1) ... [2024-11-08 19:04:27,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (1/1) ... [2024-11-08 19:04:28,080 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (1/1) ... [2024-11-08 19:04:28,297 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 19:04:28,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (1/1) ... [2024-11-08 19:04:28,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (1/1) ... [2024-11-08 19:04:28,978 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (1/1) ... [2024-11-08 19:04:29,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (1/1) ... [2024-11-08 19:04:29,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (1/1) ... [2024-11-08 19:04:29,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (1/1) ... [2024-11-08 19:04:29,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:04:29,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:04:29,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:04:29,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:04:29,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (1/1) ... [2024-11-08 19:04:29,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:04:29,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:04:29,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:04:29,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:04:30,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:04:30,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:04:30,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:04:30,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:04:31,372 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:04:31,374 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:04:59,069 INFO L? ?]: Removed 12048 outVars from TransFormulas that were not future-live. [2024-11-08 19:04:59,069 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:04:59,142 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:04:59,142 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 19:04:59,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:04:59 BoogieIcfgContainer [2024-11-08 19:04:59,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:04:59,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:04:59,147 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:04:59,151 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:04:59,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:04:23" (1/3) ... [2024-11-08 19:04:59,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b700bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:04:59, skipping insertion in model container [2024-11-08 19:04:59,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:04:25" (2/3) ... [2024-11-08 19:04:59,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b700bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:04:59, skipping insertion in model container [2024-11-08 19:04:59,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:04:59" (3/3) ... [2024-11-08 19:04:59,154 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sokoban.1.prop1-func-interl.c [2024-11-08 19:04:59,170 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:04:59,171 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:04:59,311 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:04:59,318 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;@67b33031, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:04:59,319 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 19:04:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 4330 states, 4328 states have (on average 1.5103974121996304) internal successors, (6537), 4329 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:04:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-08 19:04:59,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:04:59,355 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:04:59,356 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:04:59,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:04:59,362 INFO L85 PathProgramCache]: Analyzing trace with hash 281729804, now seen corresponding path program 1 times [2024-11-08 19:04:59,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:04:59,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355327977] [2024-11-08 19:04:59,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:04:59,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:04:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:05:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:05:00,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:05:00,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355327977] [2024-11-08 19:05:00,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355327977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:05:00,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:05:00,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:05:00,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704013100] [2024-11-08 19:05:00,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:05:00,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:05:00,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:05:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:05:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:05:00,712 INFO L87 Difference]: Start difference. First operand has 4330 states, 4328 states have (on average 1.5103974121996304) internal successors, (6537), 4329 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:00,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:05:00,962 INFO L93 Difference]: Finished difference Result 8381 states and 12659 transitions. [2024-11-08 19:05:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:05:00,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-11-08 19:05:00,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:05:01,003 INFO L225 Difference]: With dead ends: 8381 [2024-11-08 19:05:01,003 INFO L226 Difference]: Without dead ends: 4329 [2024-11-08 19:05:01,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:05:01,022 INFO L432 NwaCegarLoop]: 6531 mSDtfsCounter, 0 mSDsluCounter, 13056 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19587 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:05:01,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19587 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:05:01,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2024-11-08 19:05:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 4329. [2024-11-08 19:05:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4329 states, 4328 states have (on average 1.5099353049907578) internal successors, (6535), 4328 states have internal predecessors, (6535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 6535 transitions. [2024-11-08 19:05:01,198 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 6535 transitions. Word has length 167 [2024-11-08 19:05:01,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:05:01,200 INFO L471 AbstractCegarLoop]: Abstraction has 4329 states and 6535 transitions. [2024-11-08 19:05:01,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 6535 transitions. [2024-11-08 19:05:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-08 19:05:01,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:05:01,207 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:05:01,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:05:01,207 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:05:01,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:05:01,208 INFO L85 PathProgramCache]: Analyzing trace with hash 145385538, now seen corresponding path program 1 times [2024-11-08 19:05:01,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:05:01,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522721965] [2024-11-08 19:05:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:05:01,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:05:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:05:01,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:05:01,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:05:01,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522721965] [2024-11-08 19:05:01,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522721965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:05:01,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:05:01,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:05:01,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203726766] [2024-11-08 19:05:01,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:05:01,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:05:01,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:05:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:05:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:05:01,928 INFO L87 Difference]: Start difference. First operand 4329 states and 6535 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:02,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:05:02,087 INFO L93 Difference]: Finished difference Result 8382 states and 12657 transitions. [2024-11-08 19:05:02,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:05:02,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2024-11-08 19:05:02,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:05:02,104 INFO L225 Difference]: With dead ends: 8382 [2024-11-08 19:05:02,105 INFO L226 Difference]: Without dead ends: 4331 [2024-11-08 19:05:02,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:05:02,112 INFO L432 NwaCegarLoop]: 6531 mSDtfsCounter, 0 mSDsluCounter, 13052 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19583 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:05:02,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19583 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:05:02,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2024-11-08 19:05:02,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 4331. [2024-11-08 19:05:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 4330 states have (on average 1.5096997690531178) internal successors, (6537), 4330 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6537 transitions. [2024-11-08 19:05:02,188 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6537 transitions. Word has length 168 [2024-11-08 19:05:02,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:05:02,189 INFO L471 AbstractCegarLoop]: Abstraction has 4331 states and 6537 transitions. [2024-11-08 19:05:02,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:02,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6537 transitions. [2024-11-08 19:05:02,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-08 19:05:02,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:05:02,192 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:05:02,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:05:02,192 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:05:02,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:05:02,193 INFO L85 PathProgramCache]: Analyzing trace with hash -885980507, now seen corresponding path program 1 times [2024-11-08 19:05:02,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:05:02,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086755212] [2024-11-08 19:05:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:05:02,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:05:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:05:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:05:02,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:05:02,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086755212] [2024-11-08 19:05:02,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086755212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:05:02,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:05:02,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:05:02,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579112295] [2024-11-08 19:05:02,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:05:02,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:05:02,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:05:02,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:05:02,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:05:02,621 INFO L87 Difference]: Start difference. First operand 4331 states and 6537 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:05:02,780 INFO L93 Difference]: Finished difference Result 8386 states and 12661 transitions. [2024-11-08 19:05:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:05:02,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2024-11-08 19:05:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:05:02,796 INFO L225 Difference]: With dead ends: 8386 [2024-11-08 19:05:02,797 INFO L226 Difference]: Without dead ends: 4333 [2024-11-08 19:05:02,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:05:02,804 INFO L432 NwaCegarLoop]: 6531 mSDtfsCounter, 0 mSDsluCounter, 13046 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19577 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:05:02,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19577 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:05:02,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4333 states. [2024-11-08 19:05:02,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4333 to 4333. [2024-11-08 19:05:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4333 states, 4332 states have (on average 1.5094644506001846) internal successors, (6539), 4332 states have internal predecessors, (6539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4333 states to 4333 states and 6539 transitions. [2024-11-08 19:05:02,897 INFO L78 Accepts]: Start accepts. Automaton has 4333 states and 6539 transitions. Word has length 169 [2024-11-08 19:05:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:05:02,898 INFO L471 AbstractCegarLoop]: Abstraction has 4333 states and 6539 transitions. [2024-11-08 19:05:02,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:02,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4333 states and 6539 transitions. [2024-11-08 19:05:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-08 19:05:02,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:05:02,900 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:05:02,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:05:02,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:05:02,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:05:02,901 INFO L85 PathProgramCache]: Analyzing trace with hash -786704087, now seen corresponding path program 1 times [2024-11-08 19:05:02,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:05:02,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684707083] [2024-11-08 19:05:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:05:02,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:05:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:05:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:05:03,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:05:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684707083] [2024-11-08 19:05:03,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684707083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:05:03,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:05:03,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:05:03,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280635331] [2024-11-08 19:05:03,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:05:03,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:05:03,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:05:03,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:05:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:05:03,441 INFO L87 Difference]: Start difference. First operand 4333 states and 6539 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:08,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:05:08,391 INFO L93 Difference]: Finished difference Result 12429 states and 18765 transitions. [2024-11-08 19:05:08,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:05:08,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-11-08 19:05:08,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:05:08,422 INFO L225 Difference]: With dead ends: 12429 [2024-11-08 19:05:08,423 INFO L226 Difference]: Without dead ends: 8374 [2024-11-08 19:05:08,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:05:08,432 INFO L432 NwaCegarLoop]: 5087 mSDtfsCounter, 6355 mSDsluCounter, 14811 mSDsCounter, 0 mSdLazyCounter, 5819 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6355 SdHoareTripleChecker+Valid, 19898 SdHoareTripleChecker+Invalid, 5820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-08 19:05:08,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6355 Valid, 19898 Invalid, 5820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5819 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-08 19:05:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8374 states. [2024-11-08 19:05:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8374 to 4372. [2024-11-08 19:05:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4372 states, 4371 states have (on average 1.5090368336765043) internal successors, (6596), 4371 states have internal predecessors, (6596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4372 states to 4372 states and 6596 transitions. [2024-11-08 19:05:08,593 INFO L78 Accepts]: Start accepts. Automaton has 4372 states and 6596 transitions. Word has length 170 [2024-11-08 19:05:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:05:08,593 INFO L471 AbstractCegarLoop]: Abstraction has 4372 states and 6596 transitions. [2024-11-08 19:05:08,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states and 6596 transitions. [2024-11-08 19:05:08,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-08 19:05:08,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:05:08,599 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:05:08,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:05:08,600 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:05:08,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:05:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1701324418, now seen corresponding path program 1 times [2024-11-08 19:05:08,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:05:08,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136017666] [2024-11-08 19:05:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:05:08,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:05:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:05:09,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:05:09,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:05:09,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136017666] [2024-11-08 19:05:09,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136017666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:05:09,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:05:09,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 19:05:09,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105246675] [2024-11-08 19:05:09,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:05:09,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:05:09,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:05:09,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:05:09,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:05:09,663 INFO L87 Difference]: Start difference. First operand 4372 states and 6596 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:10,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:05:10,874 INFO L93 Difference]: Finished difference Result 12035 states and 18174 transitions. [2024-11-08 19:05:10,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:05:10,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2024-11-08 19:05:10,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:05:10,898 INFO L225 Difference]: With dead ends: 12035 [2024-11-08 19:05:10,899 INFO L226 Difference]: Without dead ends: 7980 [2024-11-08 19:05:10,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:05:10,905 INFO L432 NwaCegarLoop]: 6447 mSDtfsCounter, 5768 mSDsluCounter, 31797 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5768 SdHoareTripleChecker+Valid, 38244 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 19:05:10,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5768 Valid, 38244 Invalid, 540 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 19:05:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7980 states. [2024-11-08 19:05:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7980 to 4373. [2024-11-08 19:05:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4372 states have (on average 1.5089204025617566) internal successors, (6597), 4372 states have internal predecessors, (6597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 6597 transitions. [2024-11-08 19:05:10,998 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 6597 transitions. Word has length 171 [2024-11-08 19:05:10,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:05:10,999 INFO L471 AbstractCegarLoop]: Abstraction has 4373 states and 6597 transitions. [2024-11-08 19:05:10,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 6597 transitions. [2024-11-08 19:05:11,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2152 [2024-11-08 19:05:11,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:05:11,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:05:11,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:05:11,096 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:05:11,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:05:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash 455369769, now seen corresponding path program 1 times [2024-11-08 19:05:11,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:05:11,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749447364] [2024-11-08 19:05:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:05:11,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:05:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:05:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:05:27,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:05:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749447364] [2024-11-08 19:05:27,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749447364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:05:27,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:05:27,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:05:27,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308617240] [2024-11-08 19:05:27,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:05:27,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:05:27,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:05:27,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:05:27,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:05:27,837 INFO L87 Difference]: Start difference. First operand 4373 states and 6597 transitions. Second operand has 4 states, 4 states have (on average 537.75) internal successors, (2151), 4 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:05:27,953 INFO L93 Difference]: Finished difference Result 8428 states and 12720 transitions. [2024-11-08 19:05:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:05:27,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 537.75) internal successors, (2151), 4 states have internal predecessors, (2151), 0 states have call successors, (0), 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 2151 [2024-11-08 19:05:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:05:27,966 INFO L225 Difference]: With dead ends: 8428 [2024-11-08 19:05:27,966 INFO L226 Difference]: Without dead ends: 4373 [2024-11-08 19:05:27,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:05:27,973 INFO L432 NwaCegarLoop]: 6525 mSDtfsCounter, 6367 mSDsluCounter, 6523 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6367 SdHoareTripleChecker+Valid, 13048 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:05:27,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6367 Valid, 13048 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:05:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2024-11-08 19:05:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 4373. [2024-11-08 19:05:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4372 states have (on average 1.5086916742909424) internal successors, (6596), 4372 states have internal predecessors, (6596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:28,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 6596 transitions. [2024-11-08 19:05:28,055 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 6596 transitions. Word has length 2151 [2024-11-08 19:05:28,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:05:28,056 INFO L471 AbstractCegarLoop]: Abstraction has 4373 states and 6596 transitions. [2024-11-08 19:05:28,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 537.75) internal successors, (2151), 4 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:05:28,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 6596 transitions. [2024-11-08 19:05:28,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2153 [2024-11-08 19:05:28,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:05:28,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:05:28,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 19:05:28,183 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:05:28,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:05:28,184 INFO L85 PathProgramCache]: Analyzing trace with hash 60484100, now seen corresponding path program 1 times [2024-11-08 19:05:28,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:05:28,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873784751] [2024-11-08 19:05:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:05:28,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms