./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-88.i --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/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-88.i -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 53755642d89d6037be376831b03479fef7eeb8c5758e8107a832bfc0071676df --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 10:23:55,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 10:23:55,172 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 10:23:55,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 10:23:55,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 10:23:55,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 10:23:55,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 10:23:55,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 10:23:55,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 10:23:55,209 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 10:23:55,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 10:23:55,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 10:23:55,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 10:23:55,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 10:23:55,213 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 10:23:55,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 10:23:55,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 10:23:55,214 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 10:23:55,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 10:23:55,215 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 10:23:55,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 10:23:55,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 10:23:55,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 10:23:55,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 10:23:55,217 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 10:23:55,217 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 10:23:55,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 10:23:55,218 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 10:23:55,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 10:23:55,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 10:23:55,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 10:23:55,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 10:23:55,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:23:55,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 10:23:55,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 10:23:55,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 10:23:55,221 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 10:23:55,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 10:23:55,221 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 10:23:55,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 10:23:55,222 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 10:23:55,222 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 10:23:55,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53755642d89d6037be376831b03479fef7eeb8c5758e8107a832bfc0071676df [2024-11-22 10:23:55,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 10:23:55,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 10:23:55,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 10:23:55,576 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 10:23:55,577 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 10:23:55,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-88.i [2024-11-22 10:23:57,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 10:23:57,252 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 10:23:57,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-88.i [2024-11-22 10:23:57,267 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a334dded/e7f183dd122949febfa2680f52b4d84c/FLAG54d5d2840 [2024-11-22 10:23:57,278 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a334dded/e7f183dd122949febfa2680f52b4d84c [2024-11-22 10:23:57,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 10:23:57,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 10:23:57,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 10:23:57,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 10:23:57,289 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 10:23:57,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:57,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec566ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57, skipping insertion in model container [2024-11-22 10:23:57,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:57,326 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 10:23:57,526 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/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-88.i[916,929] [2024-11-22 10:23:57,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:23:57,661 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 10:23:57,677 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/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-88.i[916,929] [2024-11-22 10:23:57,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:23:57,772 INFO L204 MainTranslator]: Completed translation [2024-11-22 10:23:57,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57 WrapperNode [2024-11-22 10:23:57,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 10:23:57,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 10:23:57,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 10:23:57,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 10:23:57,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:57,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:57,880 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 286 [2024-11-22 10:23:57,880 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 10:23:57,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 10:23:57,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 10:23:57,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 10:23:57,894 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:57,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:57,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:57,960 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 10:23:57,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:57,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:57,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:57,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:57,993 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:57,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:58,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 10:23:58,006 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 10:23:58,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 10:23:58,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 10:23:58,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (1/1) ... [2024-11-22 10:23:58,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:23:58,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:23:58,047 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 10:23:58,052 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 10:23:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 10:23:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 10:23:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 10:23:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 10:23:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 10:23:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 10:23:58,243 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 10:23:58,252 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 10:23:58,845 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-22 10:23:58,845 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 10:23:58,864 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 10:23:58,864 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 10:23:58,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:23:58 BoogieIcfgContainer [2024-11-22 10:23:58,865 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 10:23:58,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 10:23:58,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 10:23:58,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 10:23:58,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:23:57" (1/3) ... [2024-11-22 10:23:58,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5abc01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:23:58, skipping insertion in model container [2024-11-22 10:23:58,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:23:57" (2/3) ... [2024-11-22 10:23:58,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5abc01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:23:58, skipping insertion in model container [2024-11-22 10:23:58,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:23:58" (3/3) ... [2024-11-22 10:23:58,877 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-88.i [2024-11-22 10:23:58,891 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 10:23:58,891 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 10:23:58,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 10:23:58,963 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;@288b816c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 10:23:58,964 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 10:23:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 87 states have (on average 1.4252873563218391) internal successors, (124), 88 states have internal predecessors, (124), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-22 10:23:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-22 10:23:58,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:23:58,988 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:58,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:23:58,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:23:58,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1130248765, now seen corresponding path program 1 times [2024-11-22 10:23:59,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:23:59,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45917952] [2024-11-22 10:23:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:23:59,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:23:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:23:59,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2024-11-22 10:23:59,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:23:59,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45917952] [2024-11-22 10:23:59,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45917952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:23:59,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059104991] [2024-11-22 10:23:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:23:59,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:23:59,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:23:59,420 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 10:23:59,421 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 10:23:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:23:59,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 10:23:59,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:23:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2024-11-22 10:23:59,700 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:23:59,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059104991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:23:59,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:23:59,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 10:23:59,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343061426] [2024-11-22 10:23:59,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:23:59,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 10:23:59,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:23:59,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 10:23:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:23:59,749 INFO L87 Difference]: Start difference. First operand has 118 states, 87 states have (on average 1.4252873563218391) internal successors, (124), 88 states have internal predecessors, (124), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-22 10:23:59,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:23:59,787 INFO L93 Difference]: Finished difference Result 233 states and 385 transitions. [2024-11-22 10:23:59,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 10:23:59,790 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) Word has length 191 [2024-11-22 10:23:59,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:23:59,797 INFO L225 Difference]: With dead ends: 233 [2024-11-22 10:23:59,797 INFO L226 Difference]: Without dead ends: 114 [2024-11-22 10:23:59,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:23:59,804 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:23:59,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:23:59,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-22 10:23:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-22 10:23:59,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 84 states have (on average 1.3928571428571428) internal successors, (117), 84 states have internal predecessors, (117), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-22 10:23:59,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 173 transitions. [2024-11-22 10:23:59,916 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 173 transitions. Word has length 191 [2024-11-22 10:23:59,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:23:59,917 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 173 transitions. [2024-11-22 10:23:59,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-22 10:23:59,919 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 173 transitions. [2024-11-22 10:23:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-22 10:23:59,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:23:59,926 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:59,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 10:24:00,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 10:24:00,131 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:00,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:00,132 INFO L85 PathProgramCache]: Analyzing trace with hash 571713339, now seen corresponding path program 1 times [2024-11-22 10:24:00,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:00,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906855865] [2024-11-22 10:24:00,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:00,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 10:24:00,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:00,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906855865] [2024-11-22 10:24:00,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906855865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:24:00,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:24:00,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 10:24:00,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841743473] [2024-11-22 10:24:00,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:24:00,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 10:24:00,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:00,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 10:24:00,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:24:00,845 INFO L87 Difference]: Start difference. First operand 114 states and 173 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:01,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:01,083 INFO L93 Difference]: Finished difference Result 377 states and 571 transitions. [2024-11-22 10:24:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 10:24:01,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2024-11-22 10:24:01,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:01,091 INFO L225 Difference]: With dead ends: 377 [2024-11-22 10:24:01,092 INFO L226 Difference]: Without dead ends: 266 [2024-11-22 10:24:01,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:24:01,096 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 253 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:01,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 487 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 10:24:01,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-22 10:24:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 219. [2024-11-22 10:24:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 160 states have (on average 1.36875) internal successors, (219), 160 states have internal predecessors, (219), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-22 10:24:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 331 transitions. [2024-11-22 10:24:01,143 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 331 transitions. Word has length 191 [2024-11-22 10:24:01,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:01,144 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 331 transitions. [2024-11-22 10:24:01,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:01,144 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 331 transitions. [2024-11-22 10:24:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-22 10:24:01,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:01,148 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:01,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 10:24:01,148 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:01,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:01,149 INFO L85 PathProgramCache]: Analyzing trace with hash -337482819, now seen corresponding path program 1 times [2024-11-22 10:24:01,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:01,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573831829] [2024-11-22 10:24:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:01,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 10:24:01,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:01,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573831829] [2024-11-22 10:24:01,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573831829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:24:01,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:24:01,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 10:24:01,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120346057] [2024-11-22 10:24:01,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:24:01,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 10:24:01,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:01,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 10:24:01,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 10:24:01,510 INFO L87 Difference]: Start difference. First operand 219 states and 331 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-22 10:24:01,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:01,841 INFO L93 Difference]: Finished difference Result 586 states and 884 transitions. [2024-11-22 10:24:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 10:24:01,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 192 [2024-11-22 10:24:01,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:01,848 INFO L225 Difference]: With dead ends: 586 [2024-11-22 10:24:01,848 INFO L226 Difference]: Without dead ends: 370 [2024-11-22 10:24:01,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 10:24:01,853 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 257 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:01,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 578 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:24:01,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-22 10:24:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 274. [2024-11-22 10:24:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 186 states have (on average 1.3279569892473118) internal successors, (247), 186 states have internal predecessors, (247), 84 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-22 10:24:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 415 transitions. [2024-11-22 10:24:01,911 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 415 transitions. Word has length 192 [2024-11-22 10:24:01,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:01,914 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 415 transitions. [2024-11-22 10:24:01,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-22 10:24:01,914 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 415 transitions. [2024-11-22 10:24:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-22 10:24:01,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:01,920 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:01,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 10:24:01,920 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:01,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:01,921 INFO L85 PathProgramCache]: Analyzing trace with hash 171990271, now seen corresponding path program 1 times [2024-11-22 10:24:01,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:01,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598704534] [2024-11-22 10:24:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:01,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 10:24:02,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:02,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598704534] [2024-11-22 10:24:02,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598704534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:24:02,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:24:02,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 10:24:02,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53686171] [2024-11-22 10:24:02,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:24:02,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 10:24:02,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:02,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 10:24:02,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:24:02,334 INFO L87 Difference]: Start difference. First operand 274 states and 415 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:02,741 INFO L93 Difference]: Finished difference Result 586 states and 883 transitions. [2024-11-22 10:24:02,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 10:24:02,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2024-11-22 10:24:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:02,745 INFO L225 Difference]: With dead ends: 586 [2024-11-22 10:24:02,746 INFO L226 Difference]: Without dead ends: 370 [2024-11-22 10:24:02,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 10:24:02,748 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 107 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:02,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 548 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:24:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-22 10:24:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 284. [2024-11-22 10:24:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 196 states have (on average 1.3316326530612246) internal successors, (261), 196 states have internal predecessors, (261), 84 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-22 10:24:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 429 transitions. [2024-11-22 10:24:02,799 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 429 transitions. Word has length 192 [2024-11-22 10:24:02,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:02,800 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 429 transitions. [2024-11-22 10:24:02,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 429 transitions. [2024-11-22 10:24:02,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-22 10:24:02,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:02,804 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:02,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 10:24:02,805 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:02,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:02,806 INFO L85 PathProgramCache]: Analyzing trace with hash 594692097, now seen corresponding path program 1 times [2024-11-22 10:24:02,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:02,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557307146] [2024-11-22 10:24:02,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:02,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 10:24:03,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557307146] [2024-11-22 10:24:03,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557307146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:24:03,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:24:03,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 10:24:03,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059252216] [2024-11-22 10:24:03,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:24:03,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 10:24:03,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:03,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 10:24:03,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 10:24:03,725 INFO L87 Difference]: Start difference. First operand 284 states and 429 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:04,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:04,990 INFO L93 Difference]: Finished difference Result 962 states and 1455 transitions. [2024-11-22 10:24:04,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 10:24:04,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2024-11-22 10:24:04,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:04,996 INFO L225 Difference]: With dead ends: 962 [2024-11-22 10:24:04,996 INFO L226 Difference]: Without dead ends: 746 [2024-11-22 10:24:04,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-22 10:24:04,998 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 418 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:04,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 810 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 10:24:05,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-11-22 10:24:05,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 409. [2024-11-22 10:24:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 292 states have (on average 1.3595890410958904) internal successors, (397), 292 states have internal predecessors, (397), 112 states have call successors, (112), 4 states have call predecessors, (112), 4 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-22 10:24:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 621 transitions. [2024-11-22 10:24:05,100 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 621 transitions. Word has length 192 [2024-11-22 10:24:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:05,100 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 621 transitions. [2024-11-22 10:24:05,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:05,101 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 621 transitions. [2024-11-22 10:24:05,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-22 10:24:05,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:05,103 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:05,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 10:24:05,103 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:05,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:05,104 INFO L85 PathProgramCache]: Analyzing trace with hash -685171581, now seen corresponding path program 1 times [2024-11-22 10:24:05,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:05,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525586269] [2024-11-22 10:24:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 10:24:05,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:05,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525586269] [2024-11-22 10:24:05,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525586269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:24:05,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:24:05,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 10:24:05,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976686419] [2024-11-22 10:24:05,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:24:05,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 10:24:05,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:05,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 10:24:05,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 10:24:05,511 INFO L87 Difference]: Start difference. First operand 409 states and 621 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:06,512 INFO L93 Difference]: Finished difference Result 1309 states and 1990 transitions. [2024-11-22 10:24:06,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 10:24:06,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2024-11-22 10:24:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:06,519 INFO L225 Difference]: With dead ends: 1309 [2024-11-22 10:24:06,520 INFO L226 Difference]: Without dead ends: 968 [2024-11-22 10:24:06,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-22 10:24:06,524 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 610 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:06,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 733 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 10:24:06,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-22 10:24:06,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 536. [2024-11-22 10:24:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 390 states have (on average 1.3794871794871795) internal successors, (538), 390 states have internal predecessors, (538), 140 states have call successors, (140), 5 states have call predecessors, (140), 5 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-22 10:24:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 818 transitions. [2024-11-22 10:24:06,639 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 818 transitions. Word has length 192 [2024-11-22 10:24:06,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:06,640 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 818 transitions. [2024-11-22 10:24:06,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:06,640 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 818 transitions. [2024-11-22 10:24:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-22 10:24:06,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:06,642 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:06,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 10:24:06,643 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:06,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1086455385, now seen corresponding path program 1 times [2024-11-22 10:24:06,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:06,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381945424] [2024-11-22 10:24:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:06,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 10:24:06,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:06,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381945424] [2024-11-22 10:24:06,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381945424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:24:06,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:24:06,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 10:24:06,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257869404] [2024-11-22 10:24:06,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:24:06,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 10:24:06,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:06,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 10:24:06,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:24:06,889 INFO L87 Difference]: Start difference. First operand 536 states and 818 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:07,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:07,319 INFO L93 Difference]: Finished difference Result 1454 states and 2222 transitions. [2024-11-22 10:24:07,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 10:24:07,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 193 [2024-11-22 10:24:07,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:07,326 INFO L225 Difference]: With dead ends: 1454 [2024-11-22 10:24:07,326 INFO L226 Difference]: Without dead ends: 986 [2024-11-22 10:24:07,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:24:07,329 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 167 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:07,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 460 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:24:07,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-11-22 10:24:07,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2024-11-22 10:24:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 722 states have (on average 1.371191135734072) internal successors, (990), 722 states have internal predecessors, (990), 252 states have call successors, (252), 9 states have call predecessors, (252), 9 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-22 10:24:07,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1494 transitions. [2024-11-22 10:24:07,498 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1494 transitions. Word has length 193 [2024-11-22 10:24:07,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:07,498 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1494 transitions. [2024-11-22 10:24:07,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:07,499 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1494 transitions. [2024-11-22 10:24:07,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-22 10:24:07,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:07,501 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:07,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 10:24:07,501 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:07,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:07,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1895960998, now seen corresponding path program 1 times [2024-11-22 10:24:07,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:07,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386830009] [2024-11-22 10:24:07,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:07,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 10:24:07,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:07,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386830009] [2024-11-22 10:24:07,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386830009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:24:07,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:24:07,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 10:24:07,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440144236] [2024-11-22 10:24:07,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:24:07,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 10:24:07,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:07,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 10:24:07,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:24:07,665 INFO L87 Difference]: Start difference. First operand 984 states and 1494 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:07,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:07,900 INFO L93 Difference]: Finished difference Result 1978 states and 3009 transitions. [2024-11-22 10:24:07,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 10:24:07,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 194 [2024-11-22 10:24:07,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:07,908 INFO L225 Difference]: With dead ends: 1978 [2024-11-22 10:24:07,909 INFO L226 Difference]: Without dead ends: 1064 [2024-11-22 10:24:07,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:24:07,914 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 19 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:07,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 295 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:24:07,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2024-11-22 10:24:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 984. [2024-11-22 10:24:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 722 states have (on average 1.365650969529086) internal successors, (986), 722 states have internal predecessors, (986), 252 states have call successors, (252), 9 states have call predecessors, (252), 9 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-22 10:24:08,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1490 transitions. [2024-11-22 10:24:08,112 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1490 transitions. Word has length 194 [2024-11-22 10:24:08,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:08,113 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1490 transitions. [2024-11-22 10:24:08,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:08,113 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1490 transitions. [2024-11-22 10:24:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-22 10:24:08,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:08,115 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:08,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 10:24:08,116 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:08,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1042078264, now seen corresponding path program 1 times [2024-11-22 10:24:08,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:08,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529686861] [2024-11-22 10:24:08,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:08,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2024-11-22 10:24:09,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:09,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529686861] [2024-11-22 10:24:09,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529686861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:24:09,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596277700] [2024-11-22 10:24:09,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:09,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:24:09,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:24:09,350 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 10:24:09,353 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 10:24:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:09,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 10:24:09,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:24:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 10:24:10,625 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:24:10,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596277700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:24:10,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:24:10,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2024-11-22 10:24:10,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068528736] [2024-11-22 10:24:10,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:24:10,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 10:24:10,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:10,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 10:24:10,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-22 10:24:10,629 INFO L87 Difference]: Start difference. First operand 984 states and 1490 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:11,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:11,394 INFO L93 Difference]: Finished difference Result 2322 states and 3490 transitions. [2024-11-22 10:24:11,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 10:24:11,394 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 195 [2024-11-22 10:24:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:11,403 INFO L225 Difference]: With dead ends: 2322 [2024-11-22 10:24:11,403 INFO L226 Difference]: Without dead ends: 1408 [2024-11-22 10:24:11,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-11-22 10:24:11,409 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 272 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:11,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 808 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 10:24:11,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2024-11-22 10:24:11,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1070. [2024-11-22 10:24:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 808 states have (on average 1.381188118811881) internal successors, (1116), 808 states have internal predecessors, (1116), 252 states have call successors, (252), 9 states have call predecessors, (252), 9 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-22 10:24:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1620 transitions. [2024-11-22 10:24:11,622 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1620 transitions. Word has length 195 [2024-11-22 10:24:11,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:11,623 INFO L471 AbstractCegarLoop]: Abstraction has 1070 states and 1620 transitions. [2024-11-22 10:24:11,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:11,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1620 transitions. [2024-11-22 10:24:11,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-22 10:24:11,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:11,627 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:11,638 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 10:24:11,831 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,SelfDestructingSolverStorable8 [2024-11-22 10:24:11,832 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:11,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:11,833 INFO L85 PathProgramCache]: Analyzing trace with hash -484984991, now seen corresponding path program 1 times [2024-11-22 10:24:11,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:11,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30023179] [2024-11-22 10:24:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:11,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 10:24:12,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:12,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30023179] [2024-11-22 10:24:12,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30023179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:24:12,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:24:12,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 10:24:12,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585780027] [2024-11-22 10:24:12,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:24:12,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 10:24:12,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:12,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 10:24:12,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 10:24:12,877 INFO L87 Difference]: Start difference. First operand 1070 states and 1620 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:14,674 INFO L93 Difference]: Finished difference Result 2172 states and 3283 transitions. [2024-11-22 10:24:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 10:24:14,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 195 [2024-11-22 10:24:14,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:14,683 INFO L225 Difference]: With dead ends: 2172 [2024-11-22 10:24:14,683 INFO L226 Difference]: Without dead ends: 1172 [2024-11-22 10:24:14,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:24:14,687 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 386 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:14,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 984 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 10:24:14,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2024-11-22 10:24:14,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1071. [2024-11-22 10:24:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 809 states have (on average 1.380716934487021) internal successors, (1117), 809 states have internal predecessors, (1117), 252 states have call successors, (252), 9 states have call predecessors, (252), 9 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-22 10:24:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1621 transitions. [2024-11-22 10:24:14,851 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1621 transitions. Word has length 195 [2024-11-22 10:24:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:14,852 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1621 transitions. [2024-11-22 10:24:14,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1621 transitions. [2024-11-22 10:24:14,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-22 10:24:14,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:14,854 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:14,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 10:24:14,855 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:14,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:14,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1959881966, now seen corresponding path program 1 times [2024-11-22 10:24:14,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:14,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894651897] [2024-11-22 10:24:14,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:14,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2024-11-22 10:24:15,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:15,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894651897] [2024-11-22 10:24:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894651897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:24:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821141317] [2024-11-22 10:24:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:15,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:24:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:24:15,624 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 10:24:15,625 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 10:24:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:15,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 10:24:15,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:24:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 10:24:15,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:24:15,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821141317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:24:15,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:24:15,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-22 10:24:15,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237906029] [2024-11-22 10:24:15,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:24:15,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 10:24:15,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:15,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 10:24:15,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:24:15,844 INFO L87 Difference]: Start difference. First operand 1071 states and 1621 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:16,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:16,492 INFO L93 Difference]: Finished difference Result 2870 states and 4349 transitions. [2024-11-22 10:24:16,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 10:24:16,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 195 [2024-11-22 10:24:16,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:16,507 INFO L225 Difference]: With dead ends: 2870 [2024-11-22 10:24:16,507 INFO L226 Difference]: Without dead ends: 1865 [2024-11-22 10:24:16,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:24:16,512 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 218 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:16,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1139 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 10:24:16,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2024-11-22 10:24:16,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1589. [2024-11-22 10:24:16,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1211 states have (on average 1.3600330305532617) internal successors, (1647), 1211 states have internal predecessors, (1647), 364 states have call successors, (364), 13 states have call predecessors, (364), 13 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2024-11-22 10:24:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2375 transitions. [2024-11-22 10:24:16,796 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2375 transitions. Word has length 195 [2024-11-22 10:24:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:16,798 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2375 transitions. [2024-11-22 10:24:16,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2375 transitions. [2024-11-22 10:24:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-22 10:24:16,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:16,802 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:16,811 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 10:24:17,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:24:17,003 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:17,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:17,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1445773780, now seen corresponding path program 1 times [2024-11-22 10:24:17,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:17,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081023700] [2024-11-22 10:24:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:17,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:17,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 10:24:17,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:17,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081023700] [2024-11-22 10:24:17,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081023700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:24:17,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:24:17,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 10:24:17,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472135163] [2024-11-22 10:24:17,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:24:17,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 10:24:17,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:17,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 10:24:17,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 10:24:17,381 INFO L87 Difference]: Start difference. First operand 1589 states and 2375 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:18,670 INFO L93 Difference]: Finished difference Result 3880 states and 5810 transitions. [2024-11-22 10:24:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 10:24:18,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 196 [2024-11-22 10:24:18,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:18,686 INFO L225 Difference]: With dead ends: 3880 [2024-11-22 10:24:18,686 INFO L226 Difference]: Without dead ends: 2361 [2024-11-22 10:24:18,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:24:18,691 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 420 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:18,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 633 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 10:24:18,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2024-11-22 10:24:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 1947. [2024-11-22 10:24:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1511 states have (on average 1.3633355393778954) internal successors, (2060), 1511 states have internal predecessors, (2060), 420 states have call successors, (420), 15 states have call predecessors, (420), 15 states have return successors, (420), 420 states have call predecessors, (420), 420 states have call successors, (420) [2024-11-22 10:24:18,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2900 transitions. [2024-11-22 10:24:18,996 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2900 transitions. Word has length 196 [2024-11-22 10:24:18,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:18,997 INFO L471 AbstractCegarLoop]: Abstraction has 1947 states and 2900 transitions. [2024-11-22 10:24:18,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:18,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2900 transitions. [2024-11-22 10:24:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-22 10:24:18,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:19,000 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:19,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 10:24:19,000 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:19,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1456984893, now seen corresponding path program 1 times [2024-11-22 10:24:19,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:19,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299472226] [2024-11-22 10:24:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:19,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2024-11-22 10:24:19,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:19,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299472226] [2024-11-22 10:24:19,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299472226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:24:19,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947243785] [2024-11-22 10:24:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:19,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:24:19,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:24:19,751 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 10:24:19,752 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 10:24:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:19,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 10:24:19,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:24:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 283 proven. 3 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2024-11-22 10:24:20,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 10:24:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 6 refuted. 0 times theorem prover too weak. 1353 trivial. 0 not checked. [2024-11-22 10:24:20,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947243785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 10:24:20,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 10:24:20,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2024-11-22 10:24:20,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101946746] [2024-11-22 10:24:20,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 10:24:20,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 10:24:20,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:20,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 10:24:20,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-22 10:24:20,428 INFO L87 Difference]: Start difference. First operand 1947 states and 2900 transitions. Second operand has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-22 10:24:21,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:21,129 INFO L93 Difference]: Finished difference Result 3036 states and 4436 transitions. [2024-11-22 10:24:21,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 10:24:21,130 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 196 [2024-11-22 10:24:21,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:21,138 INFO L225 Difference]: With dead ends: 3036 [2024-11-22 10:24:21,138 INFO L226 Difference]: Without dead ends: 1159 [2024-11-22 10:24:21,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 386 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2024-11-22 10:24:21,144 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 609 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:21,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 335 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:24:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-22 10:24:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1095. [2024-11-22 10:24:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 846 states have (on average 1.3191489361702127) internal successors, (1116), 846 states have internal predecessors, (1116), 224 states have call successors, (224), 24 states have call predecessors, (224), 24 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2024-11-22 10:24:21,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1564 transitions. [2024-11-22 10:24:21,412 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1564 transitions. Word has length 196 [2024-11-22 10:24:21,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:21,413 INFO L471 AbstractCegarLoop]: Abstraction has 1095 states and 1564 transitions. [2024-11-22 10:24:21,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-22 10:24:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1564 transitions. [2024-11-22 10:24:21,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-22 10:24:21,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:21,416 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:21,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 10:24:21,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:24:21,617 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:21,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:21,618 INFO L85 PathProgramCache]: Analyzing trace with hash -214469475, now seen corresponding path program 1 times [2024-11-22 10:24:21,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:21,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100365146] [2024-11-22 10:24:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:21,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 10:24:22,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:24:22,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100365146] [2024-11-22 10:24:22,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100365146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:24:22,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:24:22,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 10:24:22,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826272555] [2024-11-22 10:24:22,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:24:22,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 10:24:22,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:24:22,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 10:24:22,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 10:24:22,273 INFO L87 Difference]: Start difference. First operand 1095 states and 1564 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:24:23,503 INFO L93 Difference]: Finished difference Result 2332 states and 3325 transitions. [2024-11-22 10:24:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 10:24:23,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 197 [2024-11-22 10:24:23,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:24:23,513 INFO L225 Difference]: With dead ends: 2332 [2024-11-22 10:24:23,513 INFO L226 Difference]: Without dead ends: 1315 [2024-11-22 10:24:23,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-22 10:24:23,517 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 327 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 10:24:23,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 571 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 10:24:23,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2024-11-22 10:24:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1065. [2024-11-22 10:24:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 816 states have (on average 1.3112745098039216) internal successors, (1070), 816 states have internal predecessors, (1070), 224 states have call successors, (224), 24 states have call predecessors, (224), 24 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2024-11-22 10:24:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1518 transitions. [2024-11-22 10:24:23,753 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1518 transitions. Word has length 197 [2024-11-22 10:24:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:24:23,754 INFO L471 AbstractCegarLoop]: Abstraction has 1065 states and 1518 transitions. [2024-11-22 10:24:23,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 10:24:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1518 transitions. [2024-11-22 10:24:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-22 10:24:23,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:24:23,756 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:23,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 10:24:23,757 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:24:23,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:24:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1318611228, now seen corresponding path program 1 times [2024-11-22 10:24:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:24:23,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71097820] [2024-11-22 10:24:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:23,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:24:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 10:24:23,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759964052] [2024-11-22 10:24:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:24:23,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:24:23,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:24:23,885 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 10:24:23,887 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 10:24:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:24:24,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-22 10:24:24,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:24:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 955 proven. 180 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-22 10:24:28,852 INFO L311 TraceCheckSpWp]: Computing backward predicates...