./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.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_operatoramount_amount250_file-82.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 f85bc794ddaf472a7e3079e39d319628ff71704bc56bc279abbe4af1f903e58e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:45:19,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:45:19,791 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:45:19,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:45:19,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:45:19,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:45:19,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:45:19,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:45:19,834 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:45:19,837 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:45:19,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:45:19,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:45:19,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:45:19,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:45:19,839 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:45:19,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:45:19,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:45:19,840 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:45:19,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:45:19,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:45:19,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:45:19,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:45:19,844 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:45:19,844 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:45:19,844 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:45:19,844 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:45:19,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:45:19,845 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:45:19,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:45:19,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:45:19,847 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:45:19,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:45:19,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:45:19,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:45:19,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:45:19,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:45:19,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:45:19,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:45:19,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:45:19,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:45:19,850 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:45:19,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:45:19,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f85bc794ddaf472a7e3079e39d319628ff71704bc56bc279abbe4af1f903e58e [2024-11-22 11:45:20,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:45:20,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:45:20,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:45:20,149 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:45:20,149 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:45:20,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i [2024-11-22 11:45:21,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:45:22,045 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:45:22,046 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i [2024-11-22 11:45:22,067 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ea2be53d/91001baa2972440892368a0530a5f4f9/FLAG17b08bd59 [2024-11-22 11:45:22,329 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ea2be53d/91001baa2972440892368a0530a5f4f9 [2024-11-22 11:45:22,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:45:22,332 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:45:22,333 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:45:22,334 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:45:22,339 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:45:22,340 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:22,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271bc877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22, skipping insertion in model container [2024-11-22 11:45:22,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:22,396 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:45:22,586 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_operatoramount_amount250_file-82.i[916,929] [2024-11-22 11:45:22,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:45:22,805 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:45:22,817 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_operatoramount_amount250_file-82.i[916,929] [2024-11-22 11:45:22,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:45:22,929 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:45:22,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22 WrapperNode [2024-11-22 11:45:22,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:45:22,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:45:22,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:45:22,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:45:22,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:22,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:23,101 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 501 [2024-11-22 11:45:23,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:45:23,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:45:23,103 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:45:23,103 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:45:23,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:23,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:23,135 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:23,185 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 11:45:23,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:23,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:23,212 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:23,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:23,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:23,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:23,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:45:23,258 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:45:23,258 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:45:23,258 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:45:23,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (1/1) ... [2024-11-22 11:45:23,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:45:23,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:45:23,304 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 11:45:23,310 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 11:45:23,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:45:23,357 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:45:23,357 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:45:23,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:45:23,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:45:23,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:45:23,476 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:45:23,478 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:45:24,400 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-22 11:45:24,401 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:45:24,428 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:45:24,428 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:45:24,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:45:24 BoogieIcfgContainer [2024-11-22 11:45:24,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:45:24,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:45:24,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:45:24,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:45:24,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:45:22" (1/3) ... [2024-11-22 11:45:24,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6772394a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:45:24, skipping insertion in model container [2024-11-22 11:45:24,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:22" (2/3) ... [2024-11-22 11:45:24,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6772394a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:45:24, skipping insertion in model container [2024-11-22 11:45:24,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:45:24" (3/3) ... [2024-11-22 11:45:24,439 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-82.i [2024-11-22 11:45:24,457 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:45:24,457 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:45:24,540 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:45:24,546 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;@79656d7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:45:24,546 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:45:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 152 states have (on average 1.5263157894736843) internal successors, (232), 153 states have internal predecessors, (232), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-22 11:45:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-22 11:45:24,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:24,582 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:24,583 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:24,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1242000974, now seen corresponding path program 1 times [2024-11-22 11:45:24,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:24,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019348008] [2024-11-22 11:45:24,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:24,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-22 11:45:25,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:25,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019348008] [2024-11-22 11:45:25,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019348008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:45:25,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604302120] [2024-11-22 11:45:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:25,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:25,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:45:25,210 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 11:45:25,212 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 11:45:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:25,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:45:25,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:45:25,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-22 11:45:25,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:45:25,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604302120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:45:25,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:45:25,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:45:25,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843104184] [2024-11-22 11:45:25,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:45:25,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:45:25,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:25,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:45:25,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:45:25,623 INFO L87 Difference]: Start difference. First operand has 205 states, 152 states have (on average 1.5263157894736843) internal successors, (232), 153 states have internal predecessors, (232), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-22 11:45:25,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:25,682 INFO L93 Difference]: Finished difference Result 403 states and 708 transitions. [2024-11-22 11:45:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:45:25,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 334 [2024-11-22 11:45:25,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:25,699 INFO L225 Difference]: With dead ends: 403 [2024-11-22 11:45:25,699 INFO L226 Difference]: Without dead ends: 201 [2024-11-22 11:45:25,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 335 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 11:45:25,711 INFO L432 NwaCegarLoop]: 324 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, 324 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 11:45:25,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:45:25,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-22 11:45:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-11-22 11:45:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 149 states have (on average 1.5033557046979866) internal successors, (224), 149 states have internal predecessors, (224), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-22 11:45:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 324 transitions. [2024-11-22 11:45:25,790 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 324 transitions. Word has length 334 [2024-11-22 11:45:25,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:25,790 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 324 transitions. [2024-11-22 11:45:25,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-22 11:45:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 324 transitions. [2024-11-22 11:45:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-22 11:45:25,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:25,798 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:25,812 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 11:45:26,002 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 11:45:26,003 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:26,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:26,004 INFO L85 PathProgramCache]: Analyzing trace with hash 183916854, now seen corresponding path program 1 times [2024-11-22 11:45:26,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:26,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796986511] [2024-11-22 11:45:26,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:26,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-22 11:45:27,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796986511] [2024-11-22 11:45:27,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796986511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:45:27,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:45:27,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 11:45:27,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972532189] [2024-11-22 11:45:27,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:45:27,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 11:45:27,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:27,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 11:45:27,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:45:27,099 INFO L87 Difference]: Start difference. First operand 201 states and 324 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-22 11:45:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:28,115 INFO L93 Difference]: Finished difference Result 1050 states and 1696 transitions. [2024-11-22 11:45:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 11:45:28,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 334 [2024-11-22 11:45:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:28,131 INFO L225 Difference]: With dead ends: 1050 [2024-11-22 11:45:28,132 INFO L226 Difference]: Without dead ends: 852 [2024-11-22 11:45:28,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-11-22 11:45:28,138 INFO L432 NwaCegarLoop]: 660 mSDtfsCounter, 1814 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:28,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 3704 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 11:45:28,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-11-22 11:45:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 729. [2024-11-22 11:45:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 549 states have (on average 1.5100182149362478) internal successors, (829), 551 states have internal predecessors, (829), 174 states have call successors, (174), 5 states have call predecessors, (174), 5 states have return successors, (174), 172 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-22 11:45:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1177 transitions. [2024-11-22 11:45:28,286 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1177 transitions. Word has length 334 [2024-11-22 11:45:28,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:28,289 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1177 transitions. [2024-11-22 11:45:28,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-22 11:45:28,289 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1177 transitions. [2024-11-22 11:45:28,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-22 11:45:28,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:28,297 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:28,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:45:28,297 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:28,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:28,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1865470988, now seen corresponding path program 1 times [2024-11-22 11:45:28,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:28,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102637818] [2024-11-22 11:45:28,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:28,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-22 11:45:28,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:28,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102637818] [2024-11-22 11:45:28,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102637818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:45:28,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:45:28,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:45:28,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18765040] [2024-11-22 11:45:28,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:45:28,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:45:28,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:28,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:45:28,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:45:28,705 INFO L87 Difference]: Start difference. First operand 729 states and 1177 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-22 11:45:29,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:29,090 INFO L93 Difference]: Finished difference Result 2447 states and 3961 transitions. [2024-11-22 11:45:29,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:45:29,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 334 [2024-11-22 11:45:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:29,105 INFO L225 Difference]: With dead ends: 2447 [2024-11-22 11:45:29,105 INFO L226 Difference]: Without dead ends: 1721 [2024-11-22 11:45:29,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 11:45:29,111 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 401 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:29,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1013 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:45:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-11-22 11:45:29,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1585. [2024-11-22 11:45:29,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1226 states have (on average 1.531810766721044) internal successors, (1878), 1230 states have internal predecessors, (1878), 348 states have call successors, (348), 10 states have call predecessors, (348), 10 states have return successors, (348), 344 states have call predecessors, (348), 348 states have call successors, (348) [2024-11-22 11:45:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2574 transitions. [2024-11-22 11:45:29,302 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2574 transitions. Word has length 334 [2024-11-22 11:45:29,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:29,304 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2574 transitions. [2024-11-22 11:45:29,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-22 11:45:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2574 transitions. [2024-11-22 11:45:29,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-22 11:45:29,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:29,312 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:29,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:45:29,313 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:29,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:29,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2078469936, now seen corresponding path program 1 times [2024-11-22 11:45:29,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:29,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678746396] [2024-11-22 11:45:29,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:29,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-22 11:45:29,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:29,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678746396] [2024-11-22 11:45:29,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678746396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:45:29,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:45:29,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 11:45:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282242739] [2024-11-22 11:45:29,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:45:29,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 11:45:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:29,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 11:45:29,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 11:45:29,949 INFO L87 Difference]: Start difference. First operand 1585 states and 2574 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-22 11:45:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:31,961 INFO L93 Difference]: Finished difference Result 5360 states and 8706 transitions. [2024-11-22 11:45:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 11:45:31,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 335 [2024-11-22 11:45:31,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:31,983 INFO L225 Difference]: With dead ends: 5360 [2024-11-22 11:45:31,983 INFO L226 Difference]: Without dead ends: 3778 [2024-11-22 11:45:31,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2024-11-22 11:45:31,992 INFO L432 NwaCegarLoop]: 641 mSDtfsCounter, 3078 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3078 SdHoareTripleChecker+Valid, 3139 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:31,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3078 Valid, 3139 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 11:45:32,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2024-11-22 11:45:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 2177. [2024-11-22 11:45:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 1714 states have (on average 1.543757292882147) internal successors, (2646), 1720 states have internal predecessors, (2646), 448 states have call successors, (448), 14 states have call predecessors, (448), 14 states have return successors, (448), 442 states have call predecessors, (448), 448 states have call successors, (448) [2024-11-22 11:45:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3542 transitions. [2024-11-22 11:45:32,200 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3542 transitions. Word has length 335 [2024-11-22 11:45:32,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:32,201 INFO L471 AbstractCegarLoop]: Abstraction has 2177 states and 3542 transitions. [2024-11-22 11:45:32,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-22 11:45:32,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3542 transitions. [2024-11-22 11:45:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-22 11:45:32,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:32,208 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:32,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:45:32,209 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:32,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash 371130194, now seen corresponding path program 1 times [2024-11-22 11:45:32,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:32,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886064793] [2024-11-22 11:45:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:32,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-22 11:45:32,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:32,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886064793] [2024-11-22 11:45:32,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886064793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:45:32,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:45:32,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 11:45:32,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364626070] [2024-11-22 11:45:32,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:45:32,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:45:32,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:32,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:45:32,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:45:32,700 INFO L87 Difference]: Start difference. First operand 2177 states and 3542 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-22 11:45:33,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:33,851 INFO L93 Difference]: Finished difference Result 6679 states and 10825 transitions. [2024-11-22 11:45:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 11:45:33,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 335 [2024-11-22 11:45:33,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:33,881 INFO L225 Difference]: With dead ends: 6679 [2024-11-22 11:45:33,882 INFO L226 Difference]: Without dead ends: 4505 [2024-11-22 11:45:33,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:45:33,890 INFO L432 NwaCegarLoop]: 555 mSDtfsCounter, 853 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:33,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1348 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 11:45:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2024-11-22 11:45:34,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 2897. [2024-11-22 11:45:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2384 states have (on average 1.579278523489933) internal successors, (3765), 2392 states have internal predecessors, (3765), 496 states have call successors, (496), 16 states have call predecessors, (496), 16 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2024-11-22 11:45:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 4757 transitions. [2024-11-22 11:45:34,120 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 4757 transitions. Word has length 335 [2024-11-22 11:45:34,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:34,121 INFO L471 AbstractCegarLoop]: Abstraction has 2897 states and 4757 transitions. [2024-11-22 11:45:34,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-22 11:45:34,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 4757 transitions. [2024-11-22 11:45:34,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-22 11:45:34,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:34,130 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:34,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:45:34,130 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:34,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash 864404244, now seen corresponding path program 1 times [2024-11-22 11:45:34,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:34,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20629295] [2024-11-22 11:45:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:34,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-22 11:45:34,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:34,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20629295] [2024-11-22 11:45:34,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20629295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:45:34,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:45:34,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 11:45:34,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907684476] [2024-11-22 11:45:34,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:45:34,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 11:45:34,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:34,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 11:45:34,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-22 11:45:34,971 INFO L87 Difference]: Start difference. First operand 2897 states and 4757 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-22 11:45:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:36,924 INFO L93 Difference]: Finished difference Result 7656 states and 12450 transitions. [2024-11-22 11:45:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 11:45:36,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 335 [2024-11-22 11:45:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:36,959 INFO L225 Difference]: With dead ends: 7656 [2024-11-22 11:45:36,959 INFO L226 Difference]: Without dead ends: 6515 [2024-11-22 11:45:36,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-11-22 11:45:36,969 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 1331 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:36,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 2436 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-22 11:45:36,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6515 states. [2024-11-22 11:45:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6515 to 3455. [2024-11-22 11:45:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 2942 states have (on average 1.6050305914343983) internal successors, (4722), 2950 states have internal predecessors, (4722), 496 states have call successors, (496), 16 states have call predecessors, (496), 16 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2024-11-22 11:45:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 5714 transitions. [2024-11-22 11:45:37,296 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 5714 transitions. Word has length 335 [2024-11-22 11:45:37,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:37,297 INFO L471 AbstractCegarLoop]: Abstraction has 3455 states and 5714 transitions. [2024-11-22 11:45:37,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-22 11:45:37,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 5714 transitions. [2024-11-22 11:45:37,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-22 11:45:37,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:37,305 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:37,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:45:37,306 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:37,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:37,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1184983598, now seen corresponding path program 1 times [2024-11-22 11:45:37,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:37,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905692060] [2024-11-22 11:45:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:37,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 108 proven. 39 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2024-11-22 11:45:39,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:39,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905692060] [2024-11-22 11:45:39,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905692060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:45:39,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097151535] [2024-11-22 11:45:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:39,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:39,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:45:39,251 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 11:45:39,254 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 11:45:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:39,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 11:45:39,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:45:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1929 proven. 90 refuted. 0 times theorem prover too weak. 2881 trivial. 0 not checked. [2024-11-22 11:45:41,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:45:43,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097151535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:45:43,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 11:45:43,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 28 [2024-11-22 11:45:43,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656731290] [2024-11-22 11:45:43,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 11:45:43,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 11:45:43,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:43,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 11:45:43,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 11:45:43,931 INFO L87 Difference]: Start difference. First operand 3455 states and 5714 transitions. Second operand has 28 states, 28 states have (on average 6.214285714285714) internal successors, (174), 27 states have internal predecessors, (174), 6 states have call successors, (100), 5 states have call predecessors, (100), 7 states have return successors, (100), 6 states have call predecessors, (100), 6 states have call successors, (100) [2024-11-22 11:45:57,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:57,801 INFO L93 Difference]: Finished difference Result 28842 states and 46691 transitions. [2024-11-22 11:45:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-22 11:45:57,802 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.214285714285714) internal successors, (174), 27 states have internal predecessors, (174), 6 states have call successors, (100), 5 states have call predecessors, (100), 7 states have return successors, (100), 6 states have call predecessors, (100), 6 states have call successors, (100) Word has length 335 [2024-11-22 11:45:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:57,902 INFO L225 Difference]: With dead ends: 28842 [2024-11-22 11:45:57,902 INFO L226 Difference]: Without dead ends: 25390 [2024-11-22 11:45:57,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9459 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=4165, Invalid=21917, Unknown=0, NotChecked=0, Total=26082 [2024-11-22 11:45:57,929 INFO L432 NwaCegarLoop]: 519 mSDtfsCounter, 4854 mSDsluCounter, 6637 mSDsCounter, 0 mSdLazyCounter, 5798 mSolverCounterSat, 3200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4855 SdHoareTripleChecker+Valid, 7156 SdHoareTripleChecker+Invalid, 8998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3200 IncrementalHoareTripleChecker+Valid, 5798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:57,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4855 Valid, 7156 Invalid, 8998 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3200 Valid, 5798 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-22 11:45:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25390 states. [2024-11-22 11:45:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25390 to 16512. [2024-11-22 11:45:59,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16512 states, 13981 states have (on average 1.5728488663185751) internal successors, (21990), 14038 states have internal predecessors, (21990), 2388 states have call successors, (2388), 142 states have call predecessors, (2388), 142 states have return successors, (2388), 2331 states have call predecessors, (2388), 2388 states have call successors, (2388) [2024-11-22 11:45:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16512 states to 16512 states and 26766 transitions. [2024-11-22 11:45:59,981 INFO L78 Accepts]: Start accepts. Automaton has 16512 states and 26766 transitions. Word has length 335 [2024-11-22 11:45:59,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:59,982 INFO L471 AbstractCegarLoop]: Abstraction has 16512 states and 26766 transitions. [2024-11-22 11:45:59,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.214285714285714) internal successors, (174), 27 states have internal predecessors, (174), 6 states have call successors, (100), 5 states have call predecessors, (100), 7 states have return successors, (100), 6 states have call predecessors, (100), 6 states have call successors, (100) [2024-11-22 11:45:59,983 INFO L276 IsEmpty]: Start isEmpty. Operand 16512 states and 26766 transitions. [2024-11-22 11:46:00,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-22 11:46:00,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:46:00,002 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:00,013 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 11:46:00,206 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,SelfDestructingSolverStorable6 [2024-11-22 11:46:00,207 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:46:00,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:46:00,207 INFO L85 PathProgramCache]: Analyzing trace with hash 260084946, now seen corresponding path program 1 times [2024-11-22 11:46:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:46:00,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965059809] [2024-11-22 11:46:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:00,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:46:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:46:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 309 proven. 594 refuted. 0 times theorem prover too weak. 3997 trivial. 0 not checked. [2024-11-22 11:46:04,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:46:04,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965059809] [2024-11-22 11:46:04,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965059809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:46:04,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76369443] [2024-11-22 11:46:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:04,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:46:04,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:46:04,216 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 11:46:04,217 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 11:46:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:46:04,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-22 11:46:04,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:46:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 3230 proven. 594 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2024-11-22 11:46:10,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:46:11,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76369443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:46:11,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 11:46:11,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 29] total 47 [2024-11-22 11:46:11,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811616955] [2024-11-22 11:46:11,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 11:46:11,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-22 11:46:11,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:46:11,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-22 11:46:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2374, Unknown=0, NotChecked=0, Total=2756 [2024-11-22 11:46:11,430 INFO L87 Difference]: Start difference. First operand 16512 states and 26766 transitions. Second operand has 47 states, 45 states have (on average 4.111111111111111) internal successors, (185), 43 states have internal predecessors, (185), 16 states have call successors, (100), 9 states have call predecessors, (100), 14 states have return successors, (100), 16 states have call predecessors, (100), 16 states have call successors, (100)