./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_20-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_20-1.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 0642f258b99d0be7a55bf1ef77240ba2f36dd3da56337cf262b8aebc4e0cc323 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:09:20,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:09:20,803 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:09:20,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:09:20,809 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:09:20,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:09:20,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:09:20,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:09:20,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:09:20,862 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:09:20,862 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:09:20,862 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:09:20,863 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:09:20,863 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:09:20,863 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:09:20,863 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:09:20,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:09:20,864 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:09:20,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:09:20,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:09:20,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:09:20,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:09:20,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:09:20,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:09:20,866 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:09:20,866 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:09:20,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:09:20,867 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:09:20,867 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:09:20,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:09:20,867 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:09:20,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:09:20,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:09:20,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:09:20,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:09:20,869 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:09:20,869 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:09:20,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:09:20,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:09:20,870 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:09:20,870 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:09:20,870 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:09:20,870 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0642f258b99d0be7a55bf1ef77240ba2f36dd3da56337cf262b8aebc4e0cc323 [2024-11-22 02:09:21,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:09:21,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:09:21,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:09:21,088 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:09:21,088 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:09:21,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_20-1.c [2024-11-22 02:09:22,345 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:09:22,523 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:09:22,524 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_20-1.c [2024-11-22 02:09:22,531 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bde0411b/2ea215041dfe4be29ba8397d98721c55/FLAGa7e87df71 [2024-11-22 02:09:22,546 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bde0411b/2ea215041dfe4be29ba8397d98721c55 [2024-11-22 02:09:22,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:09:22,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:09:22,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:09:22,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:09:22,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:09:22,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,559 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e2d07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22, skipping insertion in model container [2024-11-22 02:09:22,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,579 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:09:22,726 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/recursive-simple/fibo_2calls_20-1.c[951,964] [2024-11-22 02:09:22,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:09:22,737 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:09:22,748 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/recursive-simple/fibo_2calls_20-1.c[951,964] [2024-11-22 02:09:22,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:09:22,764 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:09:22,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22 WrapperNode [2024-11-22 02:09:22,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:09:22,765 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:09:22,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:09:22,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:09:22,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,788 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-22 02:09:22,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:09:22,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:09:22,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:09:22,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:09:22,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,806 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]. [2024-11-22 02:09:22,806 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,812 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:09:22,812 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:09:22,813 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:09:22,813 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:09:22,813 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (1/1) ... [2024-11-22 02:09:22,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:09:22,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:22,838 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) [2024-11-22 02:09:22,842 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 [2024-11-22 02:09:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:09:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:09:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-22 02:09:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-22 02:09:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-22 02:09:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-22 02:09:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:09:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:09:22,927 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:09:22,929 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:09:23,033 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-22 02:09:23,033 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:09:23,046 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:09:23,047 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:09:23,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:09:23 BoogieIcfgContainer [2024-11-22 02:09:23,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:09:23,049 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:09:23,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:09:23,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:09:23,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:09:22" (1/3) ... [2024-11-22 02:09:23,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366bd450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:09:23, skipping insertion in model container [2024-11-22 02:09:23,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:22" (2/3) ... [2024-11-22 02:09:23,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366bd450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:09:23, skipping insertion in model container [2024-11-22 02:09:23,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:09:23" (3/3) ... [2024-11-22 02:09:23,054 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-1.c [2024-11-22 02:09:23,084 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:09:23,085 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:09:23,142 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:09:23,158 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;@3b6f3f35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:09:23,159 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:09:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:09:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 02:09:23,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:23,173 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:23,173 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:23,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:23,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2024-11-22 02:09:23,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:23,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033113340] [2024-11-22 02:09:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:23,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:09:23,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033113340] [2024-11-22 02:09:23,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033113340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:09:23,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:09:23,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:09:23,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870517236] [2024-11-22 02:09:23,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:09:23,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:09:23,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:23,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:09:23,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:23,461 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:09:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:23,504 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-11-22 02:09:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:09:23,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-22 02:09:23,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:23,513 INFO L225 Difference]: With dead ends: 39 [2024-11-22 02:09:23,514 INFO L226 Difference]: Without dead ends: 27 [2024-11-22 02:09:23,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:23,518 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:23,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:09:23,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-22 02:09:23,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-22 02:09:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 02:09:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:09:23,547 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2024-11-22 02:09:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:23,548 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:09:23,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:09:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:09:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 02:09:23,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:23,550 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:23,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:09:23,550 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:23,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:23,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2024-11-22 02:09:23,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:23,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140862025] [2024-11-22 02:09:23,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:23,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:23,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:09:23,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:23,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140862025] [2024-11-22 02:09:23,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140862025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:09:23,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:09:23,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:09:23,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660621955] [2024-11-22 02:09:23,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:09:23,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:09:23,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:23,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:09:23,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:23,655 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:09:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:23,685 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-22 02:09:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:09:23,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-22 02:09:23,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:23,687 INFO L225 Difference]: With dead ends: 33 [2024-11-22 02:09:23,687 INFO L226 Difference]: Without dead ends: 29 [2024-11-22 02:09:23,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:23,688 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:23,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:09:23,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-22 02:09:23,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-22 02:09:23,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 02:09:23,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:09:23,697 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2024-11-22 02:09:23,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:23,699 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:09:23,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:09:23,700 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:09:23,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 02:09:23,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:23,702 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:23,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:09:23,703 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:23,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:23,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2024-11-22 02:09:23,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:23,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99221569] [2024-11-22 02:09:23,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:23,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:23,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:23,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99221569] [2024-11-22 02:09:23,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99221569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:23,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524438268] [2024-11-22 02:09:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:23,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:23,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:23,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:23,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:09:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:23,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:09:23,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:24,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:24,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524438268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:24,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:24,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-22 02:09:24,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255693701] [2024-11-22 02:09:24,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:24,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 02:09:24,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:24,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 02:09:24,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-22 02:09:24,208 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:09:24,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:24,310 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2024-11-22 02:09:24,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:09:24,311 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2024-11-22 02:09:24,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:24,312 INFO L225 Difference]: With dead ends: 55 [2024-11-22 02:09:24,312 INFO L226 Difference]: Without dead ends: 31 [2024-11-22 02:09:24,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:09:24,313 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:24,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 105 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-22 02:09:24,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-22 02:09:24,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-22 02:09:24,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-22 02:09:24,323 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2024-11-22 02:09:24,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:24,324 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-22 02:09:24,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:09:24,324 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-22 02:09:24,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 02:09:24,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:24,325 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:24,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:24,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:24,527 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:24,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:24,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2024-11-22 02:09:24,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:24,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408287197] [2024-11-22 02:09:24,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:24,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:24,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:24,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408287197] [2024-11-22 02:09:24,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408287197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:24,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145380094] [2024-11-22 02:09:24,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:24,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:24,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:24,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:24,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:09:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:24,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:09:24,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:24,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:24,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145380094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:24,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:24,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-22 02:09:24,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639220109] [2024-11-22 02:09:24,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:24,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 02:09:24,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:24,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 02:09:24,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:09:24,887 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:09:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:25,002 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-22 02:09:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:09:25,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2024-11-22 02:09:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:25,004 INFO L225 Difference]: With dead ends: 40 [2024-11-22 02:09:25,004 INFO L226 Difference]: Without dead ends: 36 [2024-11-22 02:09:25,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:09:25,005 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:25,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 135 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:25,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-22 02:09:25,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-22 02:09:25,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-22 02:09:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-22 02:09:25,013 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2024-11-22 02:09:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:25,013 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-22 02:09:25,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:09:25,014 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-22 02:09:25,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-22 02:09:25,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:25,015 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 02:09:25,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 02:09:25,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-22 02:09:25,217 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:25,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:25,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2024-11-22 02:09:25,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:25,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908421950] [2024-11-22 02:09:25,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:25,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:09:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:25,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908421950] [2024-11-22 02:09:25,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908421950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:25,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698383424] [2024-11-22 02:09:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:25,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:25,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:25,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:25,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:09:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:25,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:09:25,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:09:25,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:09:25,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698383424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:25,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:25,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2024-11-22 02:09:25,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866320280] [2024-11-22 02:09:25,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:25,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 02:09:25,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:25,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 02:09:25,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:09:25,735 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:09:25,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:25,856 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2024-11-22 02:09:25,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:09:25,857 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2024-11-22 02:09:25,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:25,859 INFO L225 Difference]: With dead ends: 69 [2024-11-22 02:09:25,859 INFO L226 Difference]: Without dead ends: 38 [2024-11-22 02:09:25,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:09:25,860 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:25,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 146 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:25,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-22 02:09:25,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-22 02:09:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-22 02:09:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-22 02:09:25,866 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2024-11-22 02:09:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:25,866 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-22 02:09:25,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:09:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-22 02:09:25,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-22 02:09:25,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:25,867 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 02:09:25,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 02:09:26,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:26,072 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:26,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2024-11-22 02:09:26,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:26,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39125082] [2024-11-22 02:09:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:26,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:09:26,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:26,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39125082] [2024-11-22 02:09:26,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39125082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:26,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878637526] [2024-11-22 02:09:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:26,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:26,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:26,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:26,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:09:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:26,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:09:26,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:09:26,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:09:26,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878637526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:26,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:26,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2024-11-22 02:09:26,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578518858] [2024-11-22 02:09:26,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:26,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:09:26,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:26,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:09:26,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:09:26,538 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:09:26,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:26,857 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2024-11-22 02:09:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 02:09:26,858 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2024-11-22 02:09:26,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:26,860 INFO L225 Difference]: With dead ends: 101 [2024-11-22 02:09:26,860 INFO L226 Difference]: Without dead ends: 68 [2024-11-22 02:09:26,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:09:26,861 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 39 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:26,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 300 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:09:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-22 02:09:26,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2024-11-22 02:09:26,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-22 02:09:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2024-11-22 02:09:26,878 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2024-11-22 02:09:26,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:26,878 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2024-11-22 02:09:26,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:09:26,879 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2024-11-22 02:09:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-22 02:09:26,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:26,881 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-22 02:09:26,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:27,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:27,085 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:27,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:27,085 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2024-11-22 02:09:27,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:27,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635739444] [2024-11-22 02:09:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:27,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 02:09:27,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:27,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635739444] [2024-11-22 02:09:27,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635739444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:27,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713129656] [2024-11-22 02:09:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:27,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:27,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:27,202 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:27,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:09:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:27,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:09:27,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 02:09:27,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:09:27,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713129656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:27,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:27,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2024-11-22 02:09:27,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302601536] [2024-11-22 02:09:27,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:27,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:09:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:09:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:09:27,724 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:09:27,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:27,888 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2024-11-22 02:09:27,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:09:27,889 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) Word has length 51 [2024-11-22 02:09:27,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:27,891 INFO L225 Difference]: With dead ends: 102 [2024-11-22 02:09:27,891 INFO L226 Difference]: Without dead ends: 98 [2024-11-22 02:09:27,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:09:27,892 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 35 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:27,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 161 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:27,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-22 02:09:27,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2024-11-22 02:09:27,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.15) internal successors, (46), 44 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 11 states have return successors, (48), 16 states have call predecessors, (48), 12 states have call successors, (48) [2024-11-22 02:09:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2024-11-22 02:09:27,920 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2024-11-22 02:09:27,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:27,920 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2024-11-22 02:09:27,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:09:27,920 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2024-11-22 02:09:27,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-22 02:09:27,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:27,928 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:27,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 02:09:28,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:28,132 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:28,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:28,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1770426885, now seen corresponding path program 1 times [2024-11-22 02:09:28,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:28,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12673618] [2024-11-22 02:09:28,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:28,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 81 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-22 02:09:28,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:28,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12673618] [2024-11-22 02:09:28,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12673618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:28,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102009129] [2024-11-22 02:09:28,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:28,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:28,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:28,314 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:28,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:09:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:28,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:09:28,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:28,473 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 119 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-22 02:09:28,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 129 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-22 02:09:29,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102009129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:29,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:29,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-11-22 02:09:29,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407136255] [2024-11-22 02:09:29,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:29,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:09:29,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:29,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:09:29,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:09:29,224 INFO L87 Difference]: Start difference. First operand 64 states and 106 transitions. Second operand has 23 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 23 states have internal predecessors, (75), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-22 02:09:29,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:29,780 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2024-11-22 02:09:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 02:09:29,781 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 23 states have internal predecessors, (75), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) Word has length 107 [2024-11-22 02:09:29,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:29,783 INFO L225 Difference]: With dead ends: 177 [2024-11-22 02:09:29,783 INFO L226 Difference]: Without dead ends: 104 [2024-11-22 02:09:29,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 197 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 02:09:29,789 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 78 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:29,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 352 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:09:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-22 02:09:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2024-11-22 02:09:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 16 states have call successors, (16), 8 states have call predecessors, (16), 14 states have return successors, (43), 20 states have call predecessors, (43), 16 states have call successors, (43) [2024-11-22 02:09:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2024-11-22 02:09:29,806 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 107 [2024-11-22 02:09:29,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:29,807 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2024-11-22 02:09:29,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 23 states have internal predecessors, (75), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-22 02:09:29,807 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2024-11-22 02:09:29,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 02:09:29,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:29,810 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:29,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 02:09:30,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:30,011 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:30,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:30,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1566869308, now seen corresponding path program 1 times [2024-11-22 02:09:30,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:30,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145255218] [2024-11-22 02:09:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:30,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 42 proven. 158 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-11-22 02:09:30,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:30,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145255218] [2024-11-22 02:09:30,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145255218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:30,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050852495] [2024-11-22 02:09:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:30,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:30,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:30,188 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:30,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:09:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:30,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:09:30,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 29 proven. 212 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-22 02:09:30,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 29 proven. 228 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2024-11-22 02:09:31,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050852495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:31,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:31,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 23 [2024-11-22 02:09:31,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069743638] [2024-11-22 02:09:31,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:31,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:09:31,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:31,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:09:31,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:09:31,375 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 23 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 23 states have internal predecessors, (77), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 02:09:31,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:31,612 INFO L93 Difference]: Finished difference Result 132 states and 227 transitions. [2024-11-22 02:09:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 02:09:31,613 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 23 states have internal predecessors, (77), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) Word has length 146 [2024-11-22 02:09:31,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:31,615 INFO L225 Difference]: With dead ends: 132 [2024-11-22 02:09:31,615 INFO L226 Difference]: Without dead ends: 128 [2024-11-22 02:09:31,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2024-11-22 02:09:31,625 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 47 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:31,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 209 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:09:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-22 02:09:31,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2024-11-22 02:09:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 79 states have internal predecessors, (88), 21 states have call successors, (21), 8 states have call predecessors, (21), 19 states have return successors, (85), 30 states have call predecessors, (85), 21 states have call successors, (85) [2024-11-22 02:09:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 194 transitions. [2024-11-22 02:09:31,641 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 194 transitions. Word has length 146 [2024-11-22 02:09:31,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:31,642 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 194 transitions. [2024-11-22 02:09:31,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 23 states have internal predecessors, (77), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 02:09:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 194 transitions. [2024-11-22 02:09:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-22 02:09:31,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:31,646 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 18, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:31,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 02:09:31,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:31,850 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:31,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:31,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1279109938, now seen corresponding path program 2 times [2024-11-22 02:09:31,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:31,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237387105] [2024-11-22 02:09:31,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:31,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:31,882 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:31,882 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 158 proven. 490 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-11-22 02:09:32,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:32,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237387105] [2024-11-22 02:09:32,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237387105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:32,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769428730] [2024-11-22 02:09:32,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:32,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:32,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:32,260 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:32,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:09:32,393 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:32,394 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:32,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:09:32,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 569 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2024-11-22 02:09:32,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 593 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2024-11-22 02:09:34,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769428730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:34,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:34,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 29 [2024-11-22 02:09:34,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711233015] [2024-11-22 02:09:34,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:34,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 02:09:34,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:34,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 02:09:34,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:09:34,181 INFO L87 Difference]: Start difference. First operand 118 states and 194 transitions. Second operand has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) [2024-11-22 02:09:34,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:34,922 INFO L93 Difference]: Finished difference Result 323 states and 666 transitions. [2024-11-22 02:09:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-22 02:09:34,923 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) Word has length 284 [2024-11-22 02:09:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:34,926 INFO L225 Difference]: With dead ends: 323 [2024-11-22 02:09:34,927 INFO L226 Difference]: Without dead ends: 214 [2024-11-22 02:09:34,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 547 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=2413, Unknown=0, NotChecked=0, Total=2862 [2024-11-22 02:09:34,930 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 129 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:34,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 481 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:09:34,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-22 02:09:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 184. [2024-11-22 02:09:34,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 123 states have internal predecessors, (146), 35 states have call successors, (35), 17 states have call predecessors, (35), 25 states have return successors, (120), 43 states have call predecessors, (120), 35 states have call successors, (120) [2024-11-22 02:09:34,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2024-11-22 02:09:34,965 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 284 [2024-11-22 02:09:34,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:34,965 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2024-11-22 02:09:34,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) [2024-11-22 02:09:34,966 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2024-11-22 02:09:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-11-22 02:09:34,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:34,970 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 23, 23, 20, 18, 13, 13, 13, 13, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 9, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:34,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 02:09:35,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 02:09:35,171 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:35,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:35,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1509408310, now seen corresponding path program 3 times [2024-11-22 02:09:35,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:35,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359170713] [2024-11-22 02:09:35,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:35,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:35,196 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 02:09:35,196 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3187 backedges. 488 proven. 80 refuted. 0 times theorem prover too weak. 2619 trivial. 0 not checked. [2024-11-22 02:09:35,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:35,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359170713] [2024-11-22 02:09:35,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359170713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:35,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745198036] [2024-11-22 02:09:35,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:35,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:35,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:35,356 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:35,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:09:35,474 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 02:09:35,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:35,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:09:35,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3187 backedges. 496 proven. 83 refuted. 0 times theorem prover too weak. 2608 trivial. 0 not checked. [2024-11-22 02:09:35,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3187 backedges. 500 proven. 89 refuted. 0 times theorem prover too weak. 2598 trivial. 0 not checked. [2024-11-22 02:09:36,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745198036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:36,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:36,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 18 [2024-11-22 02:09:36,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321440967] [2024-11-22 02:09:36,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:36,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:09:36,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:09:36,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:09:36,663 INFO L87 Difference]: Start difference. First operand 184 states and 301 transitions. Second operand has 18 states, 16 states have (on average 4.0) internal successors, (64), 18 states have internal predecessors, (64), 12 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) [2024-11-22 02:09:36,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:36,844 INFO L93 Difference]: Finished difference Result 255 states and 465 transitions. [2024-11-22 02:09:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:09:36,844 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.0) internal successors, (64), 18 states have internal predecessors, (64), 12 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) Word has length 336 [2024-11-22 02:09:36,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:36,848 INFO L225 Difference]: With dead ends: 255 [2024-11-22 02:09:36,848 INFO L226 Difference]: Without dead ends: 251 [2024-11-22 02:09:36,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 662 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:09:36,850 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 41 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:36,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 164 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:36,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-22 02:09:36,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 224. [2024-11-22 02:09:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 148 states have (on average 1.1689189189189189) internal successors, (173), 149 states have internal predecessors, (173), 45 states have call successors, (45), 20 states have call predecessors, (45), 30 states have return successors, (187), 54 states have call predecessors, (187), 45 states have call successors, (187) [2024-11-22 02:09:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 405 transitions. [2024-11-22 02:09:36,889 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 405 transitions. Word has length 336 [2024-11-22 02:09:36,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:36,890 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 405 transitions. [2024-11-22 02:09:36,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.0) internal successors, (64), 18 states have internal predecessors, (64), 12 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) [2024-11-22 02:09:36,891 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 405 transitions. [2024-11-22 02:09:36,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-22 02:09:36,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:36,898 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 30, 29, 29, 24, 21, 21, 21, 21, 21, 21, 21, 16, 14, 14, 14, 14, 14, 14, 14, 12, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:36,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:37,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:37,103 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:37,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:37,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1192940537, now seen corresponding path program 4 times [2024-11-22 02:09:37,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:37,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172173463] [2024-11-22 02:09:37,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:37,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:37,149 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:37,149 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6983 backedges. 182 proven. 720 refuted. 0 times theorem prover too weak. 6081 trivial. 0 not checked. [2024-11-22 02:09:37,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:37,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172173463] [2024-11-22 02:09:37,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172173463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:37,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899890300] [2024-11-22 02:09:37,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:37,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:37,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:37,379 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:37,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 02:09:37,583 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:37,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:37,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:09:37,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6983 backedges. 1267 proven. 6 refuted. 0 times theorem prover too weak. 5710 trivial. 0 not checked. [2024-11-22 02:09:37,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6983 backedges. 188 proven. 860 refuted. 0 times theorem prover too weak. 5935 trivial. 0 not checked. [2024-11-22 02:09:38,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899890300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:38,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:38,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-22 02:09:38,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577991364] [2024-11-22 02:09:38,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:38,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 02:09:38,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:38,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 02:09:38,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-22 02:09:38,838 INFO L87 Difference]: Start difference. First operand 224 states and 405 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 7 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (20), 5 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-22 02:09:38,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:38,967 INFO L93 Difference]: Finished difference Result 412 states and 767 transitions. [2024-11-22 02:09:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:09:38,967 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 7 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (20), 5 states have call predecessors, (20), 7 states have call successors, (20) Word has length 484 [2024-11-22 02:09:38,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:38,969 INFO L225 Difference]: With dead ends: 412 [2024-11-22 02:09:38,970 INFO L226 Difference]: Without dead ends: 193 [2024-11-22 02:09:38,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 958 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:09:38,973 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:38,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 153 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-22 02:09:38,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 186. [2024-11-22 02:09:38,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 125 states have (on average 1.16) internal successors, (145), 124 states have internal predecessors, (145), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (112), 42 states have call predecessors, (112), 37 states have call successors, (112) [2024-11-22 02:09:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 294 transitions. [2024-11-22 02:09:38,987 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 294 transitions. Word has length 484 [2024-11-22 02:09:38,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:38,987 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 294 transitions. [2024-11-22 02:09:38,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 7 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (20), 5 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-22 02:09:38,987 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 294 transitions. [2024-11-22 02:09:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-22 02:09:39,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:39,008 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 21, 20, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 8, 8, 6, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:39,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:39,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 02:09:39,210 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:39,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:39,210 INFO L85 PathProgramCache]: Analyzing trace with hash -240108639, now seen corresponding path program 5 times [2024-11-22 02:09:39,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:39,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535511949] [2024-11-22 02:09:39,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:09:39,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:39,221 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 02:09:39,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 183 proven. 538 refuted. 0 times theorem prover too weak. 2755 trivial. 0 not checked. [2024-11-22 02:09:39,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:39,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535511949] [2024-11-22 02:09:39,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535511949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:39,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271424193] [2024-11-22 02:09:39,287 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:09:39,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:39,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:39,289 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:39,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 02:09:39,377 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 02:09:39,377 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:39,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 02:09:39,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 1045 proven. 13 refuted. 0 times theorem prover too weak. 2418 trivial. 0 not checked. [2024-11-22 02:09:39,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 183 proven. 538 refuted. 0 times theorem prover too weak. 2755 trivial. 0 not checked. [2024-11-22 02:09:40,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271424193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:40,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:40,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 17 [2024-11-22 02:09:40,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971809263] [2024-11-22 02:09:40,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:40,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:09:40,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:09:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:09:40,424 INFO L87 Difference]: Start difference. First operand 186 states and 294 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 8 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-22 02:09:40,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:40,524 INFO L93 Difference]: Finished difference Result 345 states and 585 transitions. [2024-11-22 02:09:40,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:09:40,525 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 8 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) Word has length 351 [2024-11-22 02:09:40,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:40,527 INFO L225 Difference]: With dead ends: 345 [2024-11-22 02:09:40,527 INFO L226 Difference]: Without dead ends: 147 [2024-11-22 02:09:40,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 692 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:09:40,545 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:40,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 163 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-22 02:09:40,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-22 02:09:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 100 states have internal predecessors, (118), 27 states have call successors, (27), 17 states have call predecessors, (27), 18 states have return successors, (77), 29 states have call predecessors, (77), 27 states have call successors, (77) [2024-11-22 02:09:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 222 transitions. [2024-11-22 02:09:40,556 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 222 transitions. Word has length 351 [2024-11-22 02:09:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:40,557 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 222 transitions. [2024-11-22 02:09:40,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 8 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-22 02:09:40,557 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 222 transitions. [2024-11-22 02:09:40,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-22 02:09:40,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:40,559 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 25, 22, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 10, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:40,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 02:09:40,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 02:09:40,760 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:40,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash 5991049, now seen corresponding path program 6 times [2024-11-22 02:09:40,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:40,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262247505] [2024-11-22 02:09:40,760 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:09:40,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:40,824 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-22 02:09:40,824 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 785 proven. 94 refuted. 0 times theorem prover too weak. 3800 trivial. 0 not checked. [2024-11-22 02:09:41,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:41,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262247505] [2024-11-22 02:09:41,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262247505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:41,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98906941] [2024-11-22 02:09:41,063 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:09:41,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:41,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:41,065 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:41,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 02:09:41,223 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-22 02:09:41,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:41,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:09:41,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 253 proven. 611 refuted. 0 times theorem prover too weak. 3815 trivial. 0 not checked. [2024-11-22 02:09:41,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 255 proven. 625 refuted. 0 times theorem prover too weak. 3799 trivial. 0 not checked. [2024-11-22 02:09:42,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98906941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:42,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:42,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 28 [2024-11-22 02:09:42,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372311441] [2024-11-22 02:09:42,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:42,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 02:09:42,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:42,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 02:09:42,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:09:42,995 INFO L87 Difference]: Start difference. First operand 147 states and 222 transitions. Second operand has 28 states, 26 states have (on average 3.423076923076923) internal successors, (89), 28 states have internal predecessors, (89), 18 states have call successors, (26), 1 states have call predecessors, (26), 13 states have return successors, (33), 16 states have call predecessors, (33), 18 states have call successors, (33) [2024-11-22 02:09:43,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:43,716 INFO L93 Difference]: Finished difference Result 423 states and 742 transitions. [2024-11-22 02:09:43,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-22 02:09:43,717 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.423076923076923) internal successors, (89), 28 states have internal predecessors, (89), 18 states have call successors, (26), 1 states have call predecessors, (26), 13 states have return successors, (33), 16 states have call predecessors, (33), 18 states have call successors, (33) Word has length 405 [2024-11-22 02:09:43,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:43,719 INFO L225 Difference]: With dead ends: 423 [2024-11-22 02:09:43,719 INFO L226 Difference]: Without dead ends: 278 [2024-11-22 02:09:43,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 791 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=465, Invalid=2397, Unknown=0, NotChecked=0, Total=2862 [2024-11-22 02:09:43,722 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 131 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:43,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 384 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:09:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-22 02:09:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 199. [2024-11-22 02:09:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 134 states have internal predecessors, (161), 41 states have call successors, (41), 24 states have call predecessors, (41), 21 states have return successors, (119), 40 states have call predecessors, (119), 41 states have call successors, (119) [2024-11-22 02:09:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 321 transitions. [2024-11-22 02:09:43,738 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 321 transitions. Word has length 405 [2024-11-22 02:09:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:43,739 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 321 transitions. [2024-11-22 02:09:43,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.423076923076923) internal successors, (89), 28 states have internal predecessors, (89), 18 states have call successors, (26), 1 states have call predecessors, (26), 13 states have return successors, (33), 16 states have call predecessors, (33), 18 states have call successors, (33) [2024-11-22 02:09:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 321 transitions. [2024-11-22 02:09:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2024-11-22 02:09:43,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:43,743 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 35, 35, 29, 29, 19, 19, 19, 19, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 12, 10, 9, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:43,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 02:09:43,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 02:09:43,947 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:43,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:43,947 INFO L85 PathProgramCache]: Analyzing trace with hash -744556606, now seen corresponding path program 7 times [2024-11-22 02:09:43,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:43,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111568364] [2024-11-22 02:09:43,947 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:09:43,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7232 backedges. 191 proven. 1248 refuted. 0 times theorem prover too weak. 5793 trivial. 0 not checked. [2024-11-22 02:09:44,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:44,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111568364] [2024-11-22 02:09:44,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111568364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:44,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471429856] [2024-11-22 02:09:44,433 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:09:44,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:44,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:44,435 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:44,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 02:09:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:44,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:09:44,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7232 backedges. 191 proven. 1248 refuted. 0 times theorem prover too weak. 5793 trivial. 0 not checked. [2024-11-22 02:09:44,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7232 backedges. 191 proven. 1281 refuted. 0 times theorem prover too weak. 5760 trivial. 0 not checked. [2024-11-22 02:09:47,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471429856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:47,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:47,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 19] total 22 [2024-11-22 02:09:47,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977180110] [2024-11-22 02:09:47,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:47,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 02:09:47,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:47,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 02:09:47,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:09:47,171 INFO L87 Difference]: Start difference. First operand 199 states and 321 transitions. Second operand has 22 states, 20 states have (on average 3.75) internal successors, (75), 22 states have internal predecessors, (75), 19 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 9 states have call predecessors, (27), 19 states have call successors, (27) [2024-11-22 02:09:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:47,363 INFO L93 Difference]: Finished difference Result 228 states and 388 transitions. [2024-11-22 02:09:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 02:09:47,364 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.75) internal successors, (75), 22 states have internal predecessors, (75), 19 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 9 states have call predecessors, (27), 19 states have call successors, (27) Word has length 500 [2024-11-22 02:09:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:47,367 INFO L225 Difference]: With dead ends: 228 [2024-11-22 02:09:47,367 INFO L226 Difference]: Without dead ends: 222 [2024-11-22 02:09:47,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1024 GetRequests, 989 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:09:47,368 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 51 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:47,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 187 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:47,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-22 02:09:47,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 214. [2024-11-22 02:09:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 145 states have (on average 1.1724137931034482) internal successors, (170), 143 states have internal predecessors, (170), 44 states have call successors, (44), 24 states have call predecessors, (44), 24 states have return successors, (150), 46 states have call predecessors, (150), 44 states have call successors, (150) [2024-11-22 02:09:47,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 364 transitions. [2024-11-22 02:09:47,383 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 364 transitions. Word has length 500 [2024-11-22 02:09:47,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:47,383 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 364 transitions. [2024-11-22 02:09:47,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.75) internal successors, (75), 22 states have internal predecessors, (75), 19 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 9 states have call predecessors, (27), 19 states have call successors, (27) [2024-11-22 02:09:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 364 transitions. [2024-11-22 02:09:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2024-11-22 02:09:47,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:47,387 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 37, 37, 33, 33, 22, 22, 22, 22, 22, 22, 22, 18, 18, 18, 18, 18, 18, 18, 15, 11, 11, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:47,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 02:09:47,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 02:09:47,591 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:47,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:47,591 INFO L85 PathProgramCache]: Analyzing trace with hash 399277922, now seen corresponding path program 8 times [2024-11-22 02:09:47,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:47,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011579441] [2024-11-22 02:09:47,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:47,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:47,661 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:47,661 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9040 backedges. 359 proven. 1056 refuted. 0 times theorem prover too weak. 7625 trivial. 0 not checked. [2024-11-22 02:09:48,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:48,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011579441] [2024-11-22 02:09:48,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011579441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:48,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757097028] [2024-11-22 02:09:48,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:48,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:48,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:48,062 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:48,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 02:09:48,307 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:48,307 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:48,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:09:48,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9040 backedges. 243 proven. 1553 refuted. 0 times theorem prover too weak. 7244 trivial. 0 not checked. [2024-11-22 02:09:48,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9040 backedges. 243 proven. 1597 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2024-11-22 02:09:51,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757097028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:51,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:51,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 21] total 28 [2024-11-22 02:09:51,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76324932] [2024-11-22 02:09:51,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:51,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 02:09:51,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:51,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 02:09:51,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:09:51,410 INFO L87 Difference]: Start difference. First operand 214 states and 364 transitions. Second operand has 28 states, 26 states have (on average 3.576923076923077) internal successors, (93), 28 states have internal predecessors, (93), 24 states have call successors, (28), 1 states have call predecessors, (28), 14 states have return successors, (39), 15 states have call predecessors, (39), 24 states have call successors, (39) [2024-11-22 02:09:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:51,657 INFO L93 Difference]: Finished difference Result 256 states and 481 transitions. [2024-11-22 02:09:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 02:09:51,658 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.576923076923077) internal successors, (93), 28 states have internal predecessors, (93), 24 states have call successors, (28), 1 states have call predecessors, (28), 14 states have return successors, (39), 15 states have call predecessors, (39), 24 states have call successors, (39) Word has length 556 [2024-11-22 02:09:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:51,661 INFO L225 Difference]: With dead ends: 256 [2024-11-22 02:09:51,661 INFO L226 Difference]: Without dead ends: 248 [2024-11-22 02:09:51,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1139 GetRequests, 1092 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 02:09:51,662 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:51,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 241 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-22 02:09:51,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 220. [2024-11-22 02:09:51,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 149 states have (on average 1.167785234899329) internal successors, (174), 147 states have internal predecessors, (174), 44 states have call successors, (44), 24 states have call predecessors, (44), 26 states have return successors, (153), 48 states have call predecessors, (153), 44 states have call successors, (153) [2024-11-22 02:09:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 371 transitions. [2024-11-22 02:09:51,679 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 371 transitions. Word has length 556 [2024-11-22 02:09:51,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:51,680 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 371 transitions. [2024-11-22 02:09:51,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.576923076923077) internal successors, (93), 28 states have internal predecessors, (93), 24 states have call successors, (28), 1 states have call predecessors, (28), 14 states have return successors, (39), 15 states have call predecessors, (39), 24 states have call successors, (39) [2024-11-22 02:09:51,680 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 371 transitions. [2024-11-22 02:09:51,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1675 [2024-11-22 02:09:51,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:51,692 INFO L215 NwaCegarLoop]: trace histogram [136, 136, 109, 109, 101, 99, 68, 68, 68, 68, 68, 68, 68, 54, 54, 54, 54, 54, 54, 54, 45, 37, 33, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:51,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 02:09:51,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:51,897 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:51,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:51,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1149076642, now seen corresponding path program 9 times [2024-11-22 02:09:51,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:51,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432603798] [2024-11-22 02:09:51,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:51,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:51,941 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-22 02:09:51,941 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:52,019 INFO L134 CoverageAnalysis]: Checked inductivity of 85001 backedges. 3033 proven. 84 refuted. 0 times theorem prover too weak. 81884 trivial. 0 not checked. [2024-11-22 02:09:52,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:52,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432603798] [2024-11-22 02:09:52,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432603798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:52,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081908170] [2024-11-22 02:09:52,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:52,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:52,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:52,022 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:52,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 02:09:52,262 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-22 02:09:52,262 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:52,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:09:52,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 85001 backedges. 9324 proven. 7 refuted. 0 times theorem prover too weak. 75670 trivial. 0 not checked. [2024-11-22 02:09:52,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 85001 backedges. 3508 proven. 106 refuted. 0 times theorem prover too weak. 81387 trivial. 0 not checked. [2024-11-22 02:09:55,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081908170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:55,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:55,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2024-11-22 02:09:55,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120373698] [2024-11-22 02:09:55,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:55,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 02:09:55,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:55,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 02:09:55,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-22 02:09:55,920 INFO L87 Difference]: Start difference. First operand 220 states and 371 transitions. Second operand has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 8 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (23), 6 states have call predecessors, (23), 8 states have call successors, (23) [2024-11-22 02:09:56,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:56,044 INFO L93 Difference]: Finished difference Result 435 states and 841 transitions. [2024-11-22 02:09:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 02:09:56,044 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 8 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (23), 6 states have call predecessors, (23), 8 states have call successors, (23) Word has length 1674 [2024-11-22 02:09:56,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:56,047 INFO L225 Difference]: With dead ends: 435 [2024-11-22 02:09:56,047 INFO L226 Difference]: Without dead ends: 221 [2024-11-22 02:09:56,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3362 GetRequests, 3338 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2024-11-22 02:09:56,050 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 43 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:56,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 128 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:56,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-22 02:09:56,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 213. [2024-11-22 02:09:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 145 states have (on average 1.1586206896551725) internal successors, (168), 142 states have internal predecessors, (168), 42 states have call successors, (42), 24 states have call predecessors, (42), 25 states have return successors, (148), 46 states have call predecessors, (148), 42 states have call successors, (148) [2024-11-22 02:09:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 358 transitions. [2024-11-22 02:09:56,065 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 358 transitions. Word has length 1674 [2024-11-22 02:09:56,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:56,067 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 358 transitions. [2024-11-22 02:09:56,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 8 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (23), 6 states have call predecessors, (23), 8 states have call successors, (23) [2024-11-22 02:09:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 358 transitions. [2024-11-22 02:09:56,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1670 [2024-11-22 02:09:56,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:56,080 INFO L215 NwaCegarLoop]: trace histogram [128, 128, 117, 117, 98, 97, 64, 64, 64, 64, 64, 64, 64, 58, 58, 58, 58, 58, 58, 58, 40, 33, 30, 20, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:56,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:56,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 02:09:56,281 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:56,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:56,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1290674688, now seen corresponding path program 10 times [2024-11-22 02:09:56,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:56,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212444100] [2024-11-22 02:09:56,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:56,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:56,522 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:56,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 83741 backedges. 868 proven. 4792 refuted. 0 times theorem prover too weak. 78081 trivial. 0 not checked. [2024-11-22 02:09:57,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:57,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212444100] [2024-11-22 02:09:57,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212444100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:57,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165060880] [2024-11-22 02:09:57,830 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:57,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:57,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:57,832 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:57,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 02:09:58,263 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:58,264 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:58,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 2967 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:09:58,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 83741 backedges. 9918 proven. 68 refuted. 0 times theorem prover too weak. 73755 trivial. 0 not checked. [2024-11-22 02:09:58,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 83741 backedges. 871 proven. 5253 refuted. 0 times theorem prover too weak. 77617 trivial. 0 not checked. [2024-11-22 02:10:02,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165060880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:02,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:02,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 15] total 22 [2024-11-22 02:10:02,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311665576] [2024-11-22 02:10:02,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:02,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 02:10:02,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:02,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 02:10:02,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:10:02,572 INFO L87 Difference]: Start difference. First operand 213 states and 358 transitions. Second operand has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 15 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (29), 8 states have call predecessors, (29), 15 states have call successors, (29) [2024-11-22 02:10:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:02,856 INFO L93 Difference]: Finished difference Result 425 states and 825 transitions. [2024-11-22 02:10:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 02:10:02,857 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 15 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (29), 8 states have call predecessors, (29), 15 states have call successors, (29) Word has length 1669 [2024-11-22 02:10:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:02,859 INFO L225 Difference]: With dead ends: 425 [2024-11-22 02:10:02,859 INFO L226 Difference]: Without dead ends: 218 [2024-11-22 02:10:02,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3363 GetRequests, 3324 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 02:10:02,862 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 44 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:02,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 287 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:10:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-22 02:10:02,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2024-11-22 02:10:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 145 states have internal predecessors, (170), 42 states have call successors, (42), 26 states have call predecessors, (42), 25 states have return successors, (138), 46 states have call predecessors, (138), 42 states have call successors, (138) [2024-11-22 02:10:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 350 transitions. [2024-11-22 02:10:02,882 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 350 transitions. Word has length 1669 [2024-11-22 02:10:02,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:02,883 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 350 transitions. [2024-11-22 02:10:02,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 15 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (29), 8 states have call predecessors, (29), 15 states have call successors, (29) [2024-11-22 02:10:02,883 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 350 transitions. [2024-11-22 02:10:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1714 [2024-11-22 02:10:02,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:02,897 INFO L215 NwaCegarLoop]: trace histogram [126, 126, 125, 125, 103, 100, 63, 63, 63, 63, 63, 63, 63, 62, 62, 62, 62, 62, 62, 62, 40, 38, 26, 22, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:02,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:03,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 02:10:03,098 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:03,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:03,099 INFO L85 PathProgramCache]: Analyzing trace with hash 562896299, now seen corresponding path program 11 times [2024-11-22 02:10:03,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:03,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4102933] [2024-11-22 02:10:03,099 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:03,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:03,232 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-22 02:10:03,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 88079 backedges. 2157 proven. 4967 refuted. 0 times theorem prover too weak. 80955 trivial. 0 not checked. [2024-11-22 02:10:03,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:03,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4102933] [2024-11-22 02:10:03,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4102933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:03,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978102756] [2024-11-22 02:10:03,551 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:03,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:03,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:03,553 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:03,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 02:10:03,880 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-22 02:10:03,880 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:03,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:10:03,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 88079 backedges. 38144 proven. 176 refuted. 0 times theorem prover too weak. 49759 trivial. 0 not checked. [2024-11-22 02:10:04,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 88079 backedges. 2147 proven. 4982 refuted. 0 times theorem prover too weak. 80950 trivial. 0 not checked. [2024-11-22 02:10:08,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978102756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:08,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:08,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 19] total 25 [2024-11-22 02:10:08,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429523588] [2024-11-22 02:10:08,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:08,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 02:10:08,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:08,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 02:10:08,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2024-11-22 02:10:08,965 INFO L87 Difference]: Start difference. First operand 218 states and 350 transitions. Second operand has 25 states, 25 states have (on average 4.08) internal successors, (102), 25 states have internal predecessors, (102), 21 states have call successors, (30), 2 states have call predecessors, (30), 10 states have return successors, (36), 9 states have call predecessors, (36), 21 states have call successors, (36) [2024-11-22 02:10:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:09,361 INFO L93 Difference]: Finished difference Result 453 states and 849 transitions. [2024-11-22 02:10:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 02:10:09,362 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.08) internal successors, (102), 25 states have internal predecessors, (102), 21 states have call successors, (30), 2 states have call predecessors, (30), 10 states have return successors, (36), 9 states have call predecessors, (36), 21 states have call successors, (36) Word has length 1713 [2024-11-22 02:10:09,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:09,365 INFO L225 Difference]: With dead ends: 453 [2024-11-22 02:10:09,365 INFO L226 Difference]: Without dead ends: 226 [2024-11-22 02:10:09,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3456 GetRequests, 3411 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=1161, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 02:10:09,368 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 51 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:09,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 379 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:10:09,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-22 02:10:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 216. [2024-11-22 02:10:09,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 148 states have (on average 1.1216216216216217) internal successors, (166), 146 states have internal predecessors, (166), 43 states have call successors, (43), 27 states have call predecessors, (43), 24 states have return successors, (133), 42 states have call predecessors, (133), 43 states have call successors, (133) [2024-11-22 02:10:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 342 transitions. [2024-11-22 02:10:09,382 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 342 transitions. Word has length 1713 [2024-11-22 02:10:09,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:09,383 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 342 transitions. [2024-11-22 02:10:09,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.08) internal successors, (102), 25 states have internal predecessors, (102), 21 states have call successors, (30), 2 states have call predecessors, (30), 10 states have return successors, (36), 9 states have call predecessors, (36), 21 states have call successors, (36) [2024-11-22 02:10:09,384 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 342 transitions. [2024-11-22 02:10:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1904 [2024-11-22 02:10:09,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:09,401 INFO L215 NwaCegarLoop]: trace histogram [141, 141, 138, 138, 113, 112, 70, 70, 70, 70, 70, 70, 70, 69, 69, 69, 69, 69, 69, 69, 44, 42, 28, 26, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:09,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:09,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:09,602 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:09,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:09,603 INFO L85 PathProgramCache]: Analyzing trace with hash 869325705, now seen corresponding path program 12 times [2024-11-22 02:10:09,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:09,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209541990] [2024-11-22 02:10:09,603 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:09,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:09,721 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:10:09,721 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 108880 backedges. 1437 proven. 6105 refuted. 0 times theorem prover too weak. 101338 trivial. 0 not checked. [2024-11-22 02:10:10,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:10,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209541990] [2024-11-22 02:10:10,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209541990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:10,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245090140] [2024-11-22 02:10:10,255 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:10,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:10,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:10,257 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:10,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 02:10:10,646 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:10:10,646 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:10,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 02:10:10,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 108880 backedges. 1429 proven. 6105 refuted. 0 times theorem prover too weak. 101346 trivial. 0 not checked. [2024-11-22 02:10:10,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 108880 backedges. 1433 proven. 6157 refuted. 0 times theorem prover too weak. 101290 trivial. 0 not checked. [2024-11-22 02:10:17,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245090140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:17,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:17,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 23] total 27 [2024-11-22 02:10:17,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906256529] [2024-11-22 02:10:17,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:17,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 02:10:17,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:17,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 02:10:17,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:10:17,303 INFO L87 Difference]: Start difference. First operand 216 states and 342 transitions. Second operand has 27 states, 25 states have (on average 3.64) internal successors, (91), 27 states have internal predecessors, (91), 22 states have call successors, (27), 1 states have call predecessors, (27), 11 states have return successors, (34), 13 states have call predecessors, (34), 22 states have call successors, (34) [2024-11-22 02:10:17,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:17,564 INFO L93 Difference]: Finished difference Result 307 states and 613 transitions. [2024-11-22 02:10:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 02:10:17,565 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.64) internal successors, (91), 27 states have internal predecessors, (91), 22 states have call successors, (27), 1 states have call predecessors, (27), 11 states have return successors, (34), 13 states have call predecessors, (34), 22 states have call successors, (34) Word has length 1903 [2024-11-22 02:10:17,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:17,570 INFO L225 Difference]: With dead ends: 307 [2024-11-22 02:10:17,571 INFO L226 Difference]: Without dead ends: 301 [2024-11-22 02:10:17,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3836 GetRequests, 3792 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 02:10:17,572 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 70 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:17,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 214 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-22 02:10:17,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 273. [2024-11-22 02:10:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 184 states have (on average 1.0978260869565217) internal successors, (202), 182 states have internal predecessors, (202), 55 states have call successors, (55), 30 states have call predecessors, (55), 33 states have return successors, (259), 60 states have call predecessors, (259), 55 states have call successors, (259) [2024-11-22 02:10:17,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 516 transitions. [2024-11-22 02:10:17,600 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 516 transitions. Word has length 1903 [2024-11-22 02:10:17,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:17,601 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 516 transitions. [2024-11-22 02:10:17,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.64) internal successors, (91), 27 states have internal predecessors, (91), 22 states have call successors, (27), 1 states have call predecessors, (27), 11 states have return successors, (34), 13 states have call predecessors, (34), 22 states have call successors, (34) [2024-11-22 02:10:17,602 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 516 transitions. [2024-11-22 02:10:17,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1986 [2024-11-22 02:10:17,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:17,619 INFO L215 NwaCegarLoop]: trace histogram [149, 149, 142, 142, 119, 116, 74, 74, 74, 74, 74, 74, 74, 71, 71, 71, 71, 71, 71, 71, 48, 42, 30, 26, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:17,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:17,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:17,820 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:17,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:17,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1062861881, now seen corresponding path program 13 times [2024-11-22 02:10:17,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:17,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891555192] [2024-11-22 02:10:17,821 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:17,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 118583 backedges. 2288 proven. 7844 refuted. 0 times theorem prover too weak. 108451 trivial. 0 not checked. [2024-11-22 02:10:20,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:20,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891555192] [2024-11-22 02:10:20,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891555192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:20,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224494523] [2024-11-22 02:10:20,393 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:20,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:20,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:20,394 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:20,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 02:10:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:21,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 4427 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 02:10:21,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 118583 backedges. 1106 proven. 7566 refuted. 0 times theorem prover too weak. 109911 trivial. 0 not checked. [2024-11-22 02:10:21,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 118583 backedges. 1106 proven. 7636 refuted. 0 times theorem prover too weak. 109841 trivial. 0 not checked. [2024-11-22 02:10:28,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224494523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:28,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:28,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 25] total 43 [2024-11-22 02:10:28,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105291465] [2024-11-22 02:10:28,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:28,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-22 02:10:28,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:28,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-22 02:10:28,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1612, Unknown=0, NotChecked=0, Total=1806 [2024-11-22 02:10:28,501 INFO L87 Difference]: Start difference. First operand 273 states and 516 transitions. Second operand has 43 states, 41 states have (on average 3.341463414634146) internal successors, (137), 43 states have internal predecessors, (137), 37 states have call successors, (44), 1 states have call predecessors, (44), 22 states have return successors, (62), 24 states have call predecessors, (62), 37 states have call successors, (62) [2024-11-22 02:10:30,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:30,029 INFO L93 Difference]: Finished difference Result 683 states and 1717 transitions. [2024-11-22 02:10:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-22 02:10:30,030 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 3.341463414634146) internal successors, (137), 43 states have internal predecessors, (137), 37 states have call successors, (44), 1 states have call predecessors, (44), 22 states have return successors, (62), 24 states have call predecessors, (62), 37 states have call successors, (62) Word has length 1985 [2024-11-22 02:10:30,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:30,035 INFO L225 Difference]: With dead ends: 683 [2024-11-22 02:10:30,036 INFO L226 Difference]: Without dead ends: 389 [2024-11-22 02:10:30,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4051 GetRequests, 3943 SyntacticMatches, 11 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2780 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1251, Invalid=8451, Unknown=0, NotChecked=0, Total=9702 [2024-11-22 02:10:30,042 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 255 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:30,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 879 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 02:10:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-22 02:10:30,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 333. [2024-11-22 02:10:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 231 states have (on average 1.0735930735930737) internal successors, (248), 227 states have internal predecessors, (248), 68 states have call successors, (68), 46 states have call predecessors, (68), 33 states have return successors, (244), 59 states have call predecessors, (244), 68 states have call successors, (244) [2024-11-22 02:10:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 560 transitions. [2024-11-22 02:10:30,067 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 560 transitions. Word has length 1985 [2024-11-22 02:10:30,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:30,068 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 560 transitions. [2024-11-22 02:10:30,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 3.341463414634146) internal successors, (137), 43 states have internal predecessors, (137), 37 states have call successors, (44), 1 states have call predecessors, (44), 22 states have return successors, (62), 24 states have call predecessors, (62), 37 states have call successors, (62) [2024-11-22 02:10:30,068 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 560 transitions. [2024-11-22 02:10:30,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6685 [2024-11-22 02:10:30,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:30,365 INFO L215 NwaCegarLoop]: trace histogram [492, 492, 489, 489, 399, 395, 246, 246, 246, 246, 246, 246, 246, 244, 244, 244, 244, 244, 244, 244, 155, 149, 94, 93, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:30,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:30,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:30,566 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:30,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash -739418036, now seen corresponding path program 14 times [2024-11-22 02:10:30,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:30,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471760038] [2024-11-22 02:10:30,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:30,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:32,677 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:32,677 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat